Document And Entity Information

3 Months Ended

Mar. 31, 2013

Apr. 22, 2013

Document And Entity Information [Abstract]

Document Type

10-Q

Amendment Flag

false

Document Period End Date

Mar. 31, 2013

Document Fiscal Year Focus

2013

Document Fiscal Period Focus

Q1

Entity Registrant Name

Ensco plc

Entity Central Index Key

0000314808

Current Fiscal Year End Date

--12-31

Entity Filer Category

Large Accelerated Filer

Entity Common Shares, Shares Outstanding

232,917,732

Condensed Consolidated Statements Of Income (USD $)

In Millions, except Per Share data, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Income Statement [Abstract]

OPERATING REVENUES

$ 1,149.9

$ 1,020.6

OPERATING EXPENSES

Contract drilling (exclusive of depreciation)

560.8

502.2

Depreciation

149.0

136.0

General and administrative

37.8

38.2

Total operating expenses

747.6

676.4

OPERATING INCOME

402.3

344.2

OTHER INCOME (EXPENSE)

Interest income

3.3

5.9

Interest expense, net

(39.2)

(34.6)

Other, net

6.1

2.0

Other income (expense), net

(29.8)

(26.7)

INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES

372.5

317.5

PROVISION FOR INCOME TAXES

Current income tax expense

62.2

32.3

Deferred income tax (benefit) expense

(10.5)

4.7

Total provision for income taxes

51.7

37.0

INCOME FROM CONTINUING OPERATIONS

320.8

280.5

DISCONTINUED OPERATIONS

Income (loss) from discontinued operations, net

0.2

(13.1)

Loss on disposal of discontinued operations, net

(1.1)

0

DISCONTINUED OPERATIONS, NET

(0.9)

(13.1)

NET INCOME

319.9

267.4

NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

(2.8)

(2.0)

NET INCOME ATTRIBUTABLE TO ENSCO

317.1

265.4

EARNINGS PER SHARE - BASIC

Continuing operations (in dollars per share)

$ 1.37

$ 1.21

Discontinued operations (in dollars per share)

$ (0.01)

$ (0.06)

Total earnings per share - basic (in dollars per share)

$ 1.36

$ 1.15

EARNINGS PER SHARE - DILUTED

Continuing operations (in dollars per share)

$ 1.36

$ 1.20

Discontinued operations (in dollars per share)

$ 0.00

$ (0.05)

Total earnings per share - diluted (in dollars per share)

$ 1.36

$ 1.15

NET INCOME ATTRIBUTABLE TO ENSCO SHARES - BASIC AND DILUTED

$ 313.8

$ 262.7

WEIGHTED-AVERAGE SHARES OUTSTANDING

Basic (in shares)

230.3

228.8

Diluted (in shares)

230.6

229.2

CASH DIVIDENDS PER SHARE (in dollars per share)

$ 0.50

$ 0.375

Condensed Consolidated Statements of Comprehensive Income (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Comprehensive Income [Abstract]

NET INCOME

$ 319.9

$ 267.4

OTHER COMPREHENSIVE (LOSS) INCOME, NET

Net change in fair value of derivatives

(4.0)

6.3

Reclassification of net gains and losses on derivative instruments from other comprehensive income into net income

(1.0)

(0.1)

Other

(0.1)

(1.9)

NET OTHER COMPREHENSIVE (LOSS) INCOME

(5.1)

4.3

COMPREHENSIVE INCOME

314.8

271.7

COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

(2.8)

(2.0)

COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO

$ 312.0

$ 269.7

Condensed Consolidated Balance Sheets (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

CURRENT ASSETS

Cash and cash equivalents

$ 561.8

$ 487.1

Accounts receivable, net

809.1

811.4

Other

414.0

425.4

Total current assets

1,784.9

1,723.9

PROPERTY AND EQUIPMENT, AT COST

15,893.6

15,737.1

Less accumulated depreciation

2,738.4

2,591.5

Property and equipment, net

13,155.2

13,145.6

GOODWILL

3,274.0

OTHER ASSETS, NET

378.4

421.8

TOTAL ASSETS

18,592.5

18,565.3

CURRENT LIABILITIES

Accounts payable - trade

308.9

357.8

Accrued liabilities and other

489.0

584.4

Current maturities of long-term debt

47.5

Total current liabilities

845.4

989.7

LONG-TERM DEBT

4,783.3

4,798.4

DEFERRED INCOME TAXES

346.8

351.7

OTHER LIABILITIES

548.4

573.4

COMMITMENTS AND CONTINGENCIES

ENSCO SHAREHOLDERS' EQUITY

Additional paid-in capital

5,422.5

5,398.7

Retained earnings

6,635.3

6,434.7

Accumulated other comprehensive income

15.0

20.1

Treasury shares, at cost, 4.6 million shares and 4.9 million shares

(34.6)

(31.0)

Total Ensco shareholders' equity

12,062.1

11,846.4

NONCONTROLLING INTERESTS

6.5

5.7

Total equity

12,068.6

11,852.1

Total liabilities and shareholders' equity

18,592.5

18,565.3

Class A ordinary shares, U.S. [Member]

ENSCO SHAREHOLDERS' EQUITY

Common shares, value

23.8

Common Class B, Par Value In GBP [Member]

ENSCO SHAREHOLDERS' EQUITY

Common shares, value

$ 0.1

Condensed Consolidated Balance Sheets (Parenthetical)

Mar. 31, 2013

Dec. 31, 2012

Mar. 31, 2013

Class A ordinary shares, U.S. [Member]

USD ($)

Dec. 31, 2012

Class A ordinary shares, U.S. [Member]

USD ($)

Mar. 31, 2013

Common Class B, Par Value In GBP [Member]

GBP (£)

Dec. 31, 2012

Common Class B, Par Value In GBP [Member]

GBP (£)

Common stock, par value per share (in dollars per share or pounds sterling per share)

$ 0.10

£ 1

Common shares, shares authorized (in shares)

450,000,000

50,000

Common shares, shares issued (in shares)

237,800,000

237,700,000

50,000

Treasury shares, shares held (in shares)

5,000,000

5,300,000

Condensed Consolidated Statements Of Cash Flows (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

OPERATING ACTIVITIES

Net income

$ 319.9

$ 267.4

Adjustments to reconcile net income to net cash provided by operating activities:

Discontinued operations, net

0.9

13.1

Depreciation expense

149.0

136.0

Share-based compensation expense

12.8

11.7

Deferred income tax (benefit) expense

(10.5)

4.7

Amortization of intangibles and other, net

(9.3)

(13.1)

Other

(7.0)

2.7

Changes in operating assets and liabilities

(113.7)

133.1

Net cash provided by operating activities of continuing operations

342.1

555.6

INVESTING ACTIVITIES

Additions to property and equipment

(168.3)

(764.1)

Other

0.9

5.1

Net cash used in investing activities of continuing operations

(167.4)

(759.0)

FINANCING ACTIVITIES

Cash dividends paid

(116.5)

(86.8)

Proceeds from exercise of share options

13.4

11.9

Reduction of long-term borrowings

(7.1)

Commercial paper borrowings, net

0

75.0

Other

(5.5)

(3.6)

Net cash used in financing activities of continuing operations

(115.7)

(10.6)

DISCONTINUED OPERATIONS

Operating activities

0.2

(8.3)

Investing activities

15.5

0

Net cash provided by (used in) discontinued operations

15.7

(8.3)

Effect of exchange rate changes on cash and cash equivalents

0

0.5

INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS

74.7

(221.8)

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD

487.1

430.7

CASH AND CASH EQUIVALENTS, END OF PERIOD

$ 561.8

$ 208.9

Unaudited Condensed Consolidated Financial Statements

We prepared the accompanying condensed consolidated financial statements of Ensco plc and subsidiaries (the "Company," "Ensco," "our," "we" or "us") in accordance with accounting principles generally accepted in the United States of America ("GAAP"), pursuant to the rules and regulations of the Securities and Exchange Commission (the "SEC") included in the instructions to Form 10-Q and Article 10 of Regulation S-X. The financial information included in this report is unaudited but, in our opinion, includes all adjustments (consisting of normal recurring adjustments) that are necessary for a fair presentation of our financial position, results of operations and cash flows for the interim periods presented. The December 31, 2012 condensed consolidated balance sheet data were derived from our 2012 audited consolidated financial statements, but do not include all disclosures required by GAAP. Certain previously reported amounts have been reclassified to conform to the current year presentation. The preparation of our condensed consolidated financial statements requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, the related revenues and expenses and disclosures of gain and loss contingencies as of the date of the financial statements. Actual results could differ from those estimates.

The financial data for the three-month periods ended March 31, 2013 and 2012 included herein have been subjected to a limited review by KPMG LLP, our independent registered public accounting firm. The accompanying independent registered public accounting firm's review report is not a report within the meaning of Sections 7 and 11 of the Securities Act of 1933, and the independent registered public accounting firm's liability under Section 11 does not extend to it.

Results of operations for the three-month period ended March 31, 2013 are not necessarily indicative of the results of operations that will be realized for the year ending December 31, 2013. It is recommended that these condensed consolidated financial statements be read in conjunction with our audited consolidated financial statements and notes thereto for the year ended December 31, 2012 included in our annual report on Form 10-K filed with the SEC on February 22, 2013.

Fair Value Measurements

The following fair value hierarchy table categorizes information regarding our financial assets and liabilities measured at fair value on a recurring basis (in millions):



	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
As of March 31, 2013
Supplemental executive retirement plan assets	$	35.2	$	—		$	—	$	35.2
Total financial assets	$	35.2	$	—		$	—	$	35.2
Derivatives, net	$	—	$	(3.3	)	$	—	$	(3.3	)
Total financial liabilities	$	—	$	(3.3	)	$	—	$	(3.3	)

As of December 31, 2012
Supplemental executive retirement plan assets	$	29.8	$	—		$	—	$	29.8
Derivatives, net	—		5.2			—		5.2
Total financial assets	$	29.8	$	5.2		$	—	$	35.0

Supplemental Executive Retirement Plan Assets

Our Ensco supplemental executive retirement plans (the "SERP") are non-qualified plans that accord eligible employees an opportunity to defer a portion of their compensation for use after retirement. Assets held in the SERP were marketable securities measured at fair value on a recurring basis using Level 1 inputs and were included in other assets, net, on our condensed consolidated balance sheets. The fair value measurement of assets held in the SERP was based on quoted market prices.

Derivatives

Our derivatives were measured at fair value on a recurring basis using Level 2 inputs as of March 31, 2013 and December 31, 2012. See "Note 3 - Derivative Instruments" for additional information on our derivatives, including a description of our foreign currency hedging activities and related methodologies used to manage foreign currency exchange rate risk. The fair value measurement of our derivatives was based on market prices that generally are observable for similar assets or liabilities at commonly-quoted intervals.

Other Financial Instruments

The carrying values and estimated fair values of our long-term debt instruments were as follows (in millions):



	March 31, 2013				December 31, 2012
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
4.70% Senior notes due 2021	$	1,475.3	$	1,679.6	$	1,474.7	$	1,715.6
6.875% Senior notes due 2020	1,036.9		1,123.5		1,040.6		1,138.3
3.25% Senior notes due 2016	995.3		1,066.1		995.1		1,068.9
8.50% Senior notes due 2019	612.5		661.9		616.4		661.7
7.875% Senior notes due 2040	383.5		433.3		383.8		423.9
7.20% Debentures due 2027	149.0		189.3		149.0		193.2
4.33% MARAD bonds, including current maturities, due 2016	104.3		105.0		112.3		113.0
6.36% MARAD bonds, including current maturities, due 2015	38.0		41.2		38.0		41.7
4.65% MARAD bonds, including current maturities, due 2020	36.0		41.1		36.0		41.4
Total	$	4,830.8	$	5,341.0	$	4,845.9	$	5,397.7

The estimated fair values of our senior notes and debentures were determined using quoted market prices. The estimated fair values of our MARAD bonds were determined using an income approach valuation model. The estimated fair values of our cash and cash equivalents, short-term investments, receivables, trade payables and other liabilities approximated their carrying values as of March 31, 2013 and December 31, 2012.

Derivative Instruments

Our functional currency is the U.S. dollar. As is customary in the oil and gas industry, a majority of our revenues are denominated in U.S. dollars; however, a portion of the revenues earned and expenses incurred by some of our subsidiaries are denominated in currencies other than the U.S. dollar ("foreign currencies"). These transactions are remeasured in U.S. dollars based on a combination of both current and historical exchange rates. We use foreign currency forward contracts ("derivatives") to reduce our exposure to various market risks, primarily foreign currency exchange rate risk.

All derivatives were recorded on our condensed consolidated balance sheets at fair value. Derivatives subject to legally enforceable master netting agreements were not offset in our condensed consolidated balance sheets. Accounting for the gains and losses resulting from changes in the fair value of derivatives depends on the use of the derivative and whether it qualifies for hedge accounting. Net liabilities of $3.3 million and net assets of $5.2 million associated with our foreign currency derivatives were included in our condensed consolidated balance sheets as of March 31, 2013 and December 31, 2012, respectively. All of our derivatives mature during the next 18 months. See "Note 2 - Fair Value Measurements" for additional information on the fair value measurement of our derivatives.

Derivatives recorded at fair value in our condensed consolidated balance sheets consisted of the following (in millions):



	Derivative Assets				Derivative Liabilities
	March 31, 2013		December 31, 2012		March 31, 2013		December 31, 2012
Derivatives Designated as Hedging Instruments
Foreign currency forward contracts - current⁽¹⁾	$	3.7	$	5.0	$	5.1	$	.3
Foreign currency forward contracts - non-current⁽²⁾	.3		.5		1.0		—
	4.0		5.5		6.1		.3
Derivatives Not Designated as Hedging Instruments
Foreign currency forward contracts - current⁽¹⁾	.1		.2		1.3		.2
	.1		.2		1.3		.2
Total	$	4.1	$	5.7	$	7.4	$	.5


⁽¹⁾	Derivative assets and liabilities that have maturity dates equal to or less than twelve months from the respective balance sheet date were included in other current assets and accrued liabilities and other, respectively, on our condensed consolidated balance sheets.


⁽²⁾	Derivative assets and liabilities that have maturity dates greater than twelve months from the respective balance sheet date were included in other assets, net, and other liabilities, respectively, on our condensed consolidated balance sheets.

We utilize cash flow hedges to hedge forecasted foreign currency denominated transactions, primarily to reduce our exposure to foreign currency exchange rate risk associated with contract drilling expenses denominated in various currencies. As of March 31, 2013, we had cash flow hedges outstanding to exchange an aggregate $368.3 million for various foreign currencies, including $140.0 million for British pounds, $138.8 million for Brazilian reais, $35.1 million for Singapore dollars, $23.4 million for Australian dollars, $21.9 million for euros and $9.1 million for other currencies.

Gains and losses, net of tax, on derivatives designated as cash flow hedges included in our condensed consolidated statements of income and our condensed consolidated statements of comprehensive income for the three-month periods ended March 31, 2013 and 2012 were as follows (in millions):



	(Loss) Gain Recognized in Other Comprehensive Income (Effective Portion)					(Loss) Gain Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)⁽¹⁾					Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)⁽²⁾
	2013			2012		2013			2012		2013		2012
Interest rate lock contracts⁽³⁾	$	—		$	—	$	(.1	)	$	.1	$	—	$	—
Foreign currency forward contracts⁽⁴⁾	(4.0		)	6.3		1.1			—		.2		(.8		)
Total	$	(4.0	)	$	6.3	$	1.0		$	.1	$	.2	$	(.8	)


⁽¹⁾	Changes in the fair value of cash flow hedges are recorded in AOCI. Amounts recorded in AOCI associated with cash flow hedges are subsequently reclassified into contract drilling, depreciation or interest expense as earnings are affected by the underlying hedged forecasted transaction.


⁽²⁾	Gains and losses recognized in income for ineffectiveness and amounts excluded from effectiveness testing were included in other, net, in our condensed consolidated statements of income.


⁽³⁾	Gains and losses on interest rate lock derivatives reclassified from AOCI into income (effective portion) were included in interest expense, net in our condensed consolidated statements of income.


⁽⁴⁾	During the three-month period ended March 31, 2013, $900,000 of gains were reclassified from AOCI to contract drilling expense and $200,000 of gains were reclassified from AOCI to depreciation expense in our condensed consolidated statement of income.

We have net assets and liabilities denominated in numerous foreign currencies and use various methods to manage our exposure to foreign currency exchange rate risk. We predominantly structure our drilling contracts in U.S. dollars, which significantly reduces the portion of our cash flows and assets denominated in foreign currencies. We occasionally enter into derivatives that hedge the fair value of recognized foreign currency denominated assets or liabilities but do not designate such derivatives as hedging instruments. In these situations, a natural hedging relationship generally exists whereby changes in the fair value of the derivatives offset changes in the fair value of the underlying hedged items. As of March 31, 2013, we held derivatives not designated as hedging instruments to exchange an aggregate $175.8 million for various foreign currencies, including $86.1 million for euros, $23.1 million for British pounds, $17.2 million for Swiss francs, $14.2 million for Australian dollars and $35.2 million for other currencies.

Net losses of $4.4 million and net gains of $900,000 associated with our derivatives not designated as hedging instruments were included in other, net, in our condensed consolidated statements of income for the three-month periods ended March 31, 2013 and 2012, respectively.

As of March 31, 2013, the estimated amount of net gains associated with derivative instruments, net of tax, that would be reclassified to earnings during the next twelve months totaled $200,000.

Noncontrolling Interests

Third parties hold a noncontrolling ownership interest in certain of our non-U.S. subsidiaries. Noncontrolling interests are classified as equity on our condensed consolidated balance sheets, and net income attributable to noncontrolling interests is presented separately on our condensed consolidated statements of income.

Income from continuing operations attributable to Ensco for the three-month periods ended March 31, 2013 and 2012 was as follows (in millions):



	2013			2012
Income from continuing operations	$	320.8		$	280.5
Income from continuing operations attributable to noncontrolling interests	(2.8		)	(2.0		)
Income from continuing operations attributable to Ensco	$	318.0		$	278.5

Loss from discontinued operations, net, for the three-month periods ended March 31, 2013 and 2012 was attributable to Ensco.

Earnings Per Share

We compute basic and diluted earnings per share ("EPS") in accordance with the two-class method. Net income attributable to Ensco used in our computations of basic and diluted EPS is adjusted to exclude net income allocated to non-vested shares granted to our employees and non-employee directors. Weighted-average shares outstanding used in our computation of diluted EPS is calculated using the treasury stock method and excludes non-vested shares.

The following table is a reconciliation of net income attributable to Ensco shares used in our basic and diluted EPS computations for the three-month periods ended March 31, 2013 and 2012 (in millions):



	2013			2012
Net income attributable to Ensco	$	317.1		$	265.4
Net income allocated to non-vested share awards	(3.3		)	(2.7		)
Net income attributable to Ensco shares	$	313.8		$	262.7

The following table is a reconciliation of the weighted-average shares outstanding used in our basic and diluted EPS computations for the three-month periods ended March 31, 2013 and 2012 (in millions):



	2013	2012
Weighted-average shares - basic	230.3	228.8
Potentially dilutive shares	.3	.4
Weighted-average shares - diluted	230.6	229.2

Antidilutive share options totaling 100,000 and 400,000 were excluded from the computation of diluted EPS for the three-month periods ended March 31, 2013 and 2012, respectively.

Income Taxes

Our consolidated effective income tax rate for the three-month period ended March 31, 2013 of 13.9% included the impact of various discrete tax items, the majority of which was attributable to the recognition of a liability for unrecognized tax benefits of $4.9 million associated with a tax position taken in prior years. Excluding the impact of the aforementioned discrete tax items, our consolidated effective income tax rate for the three-month period ended March 31, 2013 was 12.2%, which is equivalent to the consolidated effective income tax rate, excluding discrete tax items, of 12.2% for the three-month period ended March 31, 2012.

Discontinued Operations

During the three-month period ended March 31, 2013, we sold jackup rig Pride Pennsylvania for net proceeds of $15.5 million. The proceeds were included in investing activities of discontinued operations in our condensed consolidated statement of cash flows for the three-month period ended March 31, 2013. We recognized a loss of $1.1 million in connection with the disposal, which was included in loss on disposal of discontinued operations, net in our condensed consolidated statement of income for the three-month period ended March 31, 2013. During the third quarter of 2012, we classified Pride Pennsylvania as held for sale and the rig was written down to fair value less estimated cost to sell.

Pride Pennsylvania operating results were reclassified to discontinued operations in our condensed consolidated statement of income for the three-month period ended March 31, 2012.

During 2012, we sold three jackup rigs (ENSCO 59, ENSCO 61 and Pride Hawaii), one moored semisubmersible rig (ENSCO 5003) and our last remaining barge rig (ENSCO I). The rigs' operating results were reclassified to discontinued operations in our condensed consolidated statement of income for the three-month period ended March 31, 2012.

The following table summarizes loss from discontinued operations for the three-month periods ended March 31, 2013 and 2012 (in millions):



	2013			2012
Revenues	$	—		$	5.8
Operating expenses	.1			21.4
Operating loss before income taxes	(.1		)	(15.6		)
Other income	.3			.5
Income tax benefit	—			2.0
Loss on disposal of discontinued operations, net	(1.1		)	—
Loss from discontinued operations	$	(.9	)	$	(13.1	)

Debt and interest expense are not allocated to our discontinued operations.

Contingencies

ENSCO 74 Loss

During 2008, our jackup rig ENSCO 74 was lost as a result of Hurricane Ike in the U.S. Gulf of Mexico. Portions of its legs remained underwater adjacent to the customer's platform, and the sunken rig hull of ENSCO 74 was located approximately 95 miles from the original drilling location when it was struck by an oil tanker during 2009. Wreck removal operations on the sunken rig hull of ENSCO 74 were completed during 2010.

In April 2012, we entered into an agreement with the customer pursuant to which, among other matters, the customer agreed to remove the legs. Regardless of the actual removal costs incurred by the customer, we agreed to pay $19.0 million in nine installments upon the completion of certain milestones during the removal. We have insurance coverage for the actual removal costs incurred by the customer.

We paid $14.0 million to the customer through March 31, 2013 and received $13.1 million in insurance reimbursements. Our condensed consolidated balance sheet as of March 31, 2013 included a $5.0 million liability for remaining installments due to the customer in accrued liabilities and other and a $5.9 million receivable for recovery of related costs under our insurance policy in other assets, net.

We filed a petition for exoneration or limitation of liability under U.S. admiralty and maritime law during 2009. A number of claimants presented claims in the exoneration/limitation proceedings. Currently, only three claims remain.

The owner of the oil tanker that struck the hull of ENSCO 74 filed claims seeking monetary damages currently in excess of $5.0 million for losses incurred when the tanker struck the sunken hull of ENSCO 74. The owner of a pipeline filed claims alleging that ENSCO 74 caused the pipeline to rupture during Hurricane Ike and sought damages for the cost of repairs and business interruption in an amount in excess of $26.0 million. These matters are currently scheduled for trial in September 2013. Based on information currently available, primarily the adequacy of available defenses, we have not concluded that it is probable liabilities exist with respect to these matters.

The owner of a second pipeline filed claims alleging that ENSCO 74 caused the pipeline to rupture during Hurricane Ike and sought damages for the cost of repairs and business interruption. The matter currently is scheduled for trial in September 2013. Based on information currently available, primarily the adequacy of available defenses, we have concluded that it is remote that a liability exists with respect to this matter.

We have liability insurance policies that provide coverage for claims such as the tanker and pipeline claims as well as removal of wreckage and debris in excess of the property insurance policy sublimit, subject to a $10.0 million per occurrence self-insured retention for third-party claims and an annual aggregate limit of $500.0 million. We believe all liabilities associated with the ENSCO 74 loss during Hurricane Ike resulted from a single occurrence under the terms of the applicable insurance policies. However, legal counsel for certain liability underwriters have asserted that the liability claims arise from separate occurrences. In the event of multiple occurrences, the self-insured retention is $15.0 million for two occurrences and $1.0 million for each occurrence thereafter.

Although we do not expect final disposition of the claims associated with the ENSCO 74 loss to have a material adverse effect upon our financial position, operating results or cash flows, there can be no assurances as to the ultimate outcome.

Asbestos Litigation

We and certain subsidiaries have been named as defendants, along with numerous third-party companies as co-defendants, in multi-party lawsuits filed in Mississippi and Louisiana by approximately 100 plaintiffs. The lawsuits seek an unspecified amount of monetary damages on behalf of individuals alleging personal injury or death, primarily under the Jones Act, purportedly resulting from exposure to asbestos on drilling rigs and associated facilities during the 1960s through the 1980s.

We intend to vigorously defend against these claims and have filed responsive pleadings preserving all defenses and challenges to jurisdiction and venue. However, discovery is still ongoing and, therefore, available information regarding the nature of all pending claims is limited. At present, we cannot reasonably determine how many of the claimants may have valid claims under the Jones Act or estimate a range of potential liability exposure, if any.

In addition to the pending cases in Mississippi and Louisiana, we have other asbestos or lung injury claims pending against us in litigation in other jurisdictions. Although we do not expect the final disposition of these asbestos or lung injury lawsuits to have a material adverse effect upon our financial position, operating results or cash flows, there can be no assurances as to the ultimate outcome of the lawsuits.

Environmental Matters

We currently are subject to pending notices of assessment issued from 2008 to 2013 pursuant to which governmental authorities in Brazil are seeking fines in an aggregate amount of approximately $2.4 million for the release of drilling fluid from drilling rigs operating offshore Brazil. We are contesting these notices and intend to vigorously defend ourselves. Although we do not expect the outcome of these assessments to have a material adverse effect on our financial position, operating results or cash flows, there can be no assurance as to the ultimate outcome of these assessments. A $2.4 million liability related to these matters was recorded as of March 31, 2013 and included in accrued liabilities and other on our condensed consolidated balance sheet.

We currently are subject to a pending administrative proceeding initiated during 2009 by a Spanish government authority seeking payment in an aggregate amount of approximately $4.0 million for an alleged environmental spill originating from ENSCO 5006 while it was operating offshore Spain. Our customer has posted guarantees with the Spanish government to cover potential penalties. Additionally, we expect to be indemnified for any payments resulting from this incident by our customer under the terms of the drilling contract. A criminal investigation of the incident was initiated during 2010 by a prosecutor in Tarragona, Spain, and the administrative proceedings have been suspended pending the outcome of this investigation. We do not know at this time what, if any, involvement we may have in this investigation.

We intend to vigorously defend ourselves in the administrative proceeding and any criminal investigation. At this time, we are unable to predict the outcome of these matters or estimate the extent to which we may be exposed to any resulting liability. Although we do not expect the outcome of the proceedings to have a material adverse effect on our financial position, operating results or cash flows, there can be no assurance as to the ultimate outcome of the proceedings.

Other Matters

In addition to the foregoing, we are named defendants or parties in certain other lawsuits, claims or proceedings incidental to our business and are involved from time to time as parties to governmental investigations or proceedings, including matters related to taxation, arising in the ordinary course of business. Although the outcome of such lawsuits or other proceedings cannot be predicted with certainty and the amount of any liability that could arise with respect to such lawsuits or other proceedings cannot be predicted accurately, we do not expect these matters to have a material adverse effect on our financial position, operating results or cash flows.

Segment Information

Our business consists of three operating segments: (1) Floaters, which includes our drillships and semisubmersible rigs, (2) Jackups and (3) Other, which currently consists of management services on rigs owned by third-parties. Our two reportable segments, Floaters and Jackups, provide one service, contract drilling.

Segment information is presented below (in millions). General and administrative expense and depreciation expense incurred by our corporate office are not allocated to our operating segments for purposes of measuring segment operating income and were included in "Reconciling Items." We measure segment assets as property and equipment. Prior year information has been reclassified to conform to the current year presentation.

Three Months Ended March 31, 2013



	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total

Revenues	$	719.2	$	410.5	$	20.2	$	1,149.9	$	—		$	1,149.9
Operating expenses
Contract drilling (exclusive of depreciation)	344.9		200.2		15.7		560.8		—			560.8
Depreciation	107.1		40.3		—		147.4		1.6			149.0
General and administrative	—		—		—		—		37.8			37.8
Operating income (loss)	$	267.2	$	170.0	$	4.5	$	441.7	$	(39.4	)	$	402.3
Property and equipment, net	$	10,710.0	$	2,413.3	$	—	$	13,123.3	$	31.9		$	13,155.2

Three Months Ended March 31, 2012



	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total

Revenues	$	639.3	$	359.8	$	21.5	$	1,020.6	$	—		$	1,020.6
Operating expenses
Contract drilling (exclusive of depreciation)	312.9		173.6		15.7		502.2		—			502.2
Depreciation	91.0		41.4		—		132.4		3.6			136.0
General and administrative	—		—		—		—		38.2			38.2
Operating income (loss)	$	235.4	$	144.8	$	5.8	$	386.0	$	(41.8	)	$	344.2
Property and equipment, net	$	10,390.4	$	2,457.7	$	12.4	$	12,860.5	$	29.4		$	12,889.9

Information about Geographic Areas

As of March 31, 2013, the geographic distribution of our drilling rigs by operating segment was as follows:



	Floaters	Jackups	Total⁽¹⁾
North & South America (excluding Brazil)	8	14	22
Brazil	10	—	10
Europe & Mediterranean	1	8	9
Middle East & Africa	4	9	13
Asia & Pacific Rim	2	11	13
Asia & Pacific Rim (under construction)	3	3	6
Total	28	45	73


⁽¹⁾	We provide management services on three rigs owned by third-parties not included in the table above.

Supplemental Financial Information

Consolidated Balance Sheet Information

Accounts receivable, net, consisted of the following (in millions):



	March 31, 2013			December 31, 2012
Trade	$	814.8		$	812.4
Other	12.2			18.2
	827.0			830.6
Allowance for doubtful accounts	(17.9		)	(19.2		)
	$	809.1		$	811.4

Other current assets consisted of the following (in millions):



	March 31, 2013		December 31, 2012
Inventory	$	215.9	$	207.8
Prepaid taxes	60.9		62.2
Short-term investments	50.0		50.0
Deferred mobilization costs	29.6		33.7
Deferred tax assets	21.2		14.6
Prepaid expenses	14.5		20.3
Assets held for sale	—		14.2
Other	21.9		22.6
	$	414.0	$	425.4

Other assets, net, consisted of the following (in millions):



	March 31, 2013		December 31, 2012
Intangible assets	$	115.0	$	143.3
Unbilled receivables	74.9		77.1
Prepaid taxes on intercompany transfers of property	56.8		58.3
Supplemental executive retirement plan assets	35.2		29.8
Warranty and other claim receivables	30.6		30.6
Deferred tax assets	19.0		19.3
Deferred mobilization costs	12.2		20.8
Wreckage and debris removal receivables	5.9		13.2
Other	28.8		29.4
	$	378.4	$	421.8

Accrued liabilities and other consisted of the following (in millions):



	March 31, 2013		December 31, 2012
Personnel costs	$	165.6	$	231.1
Deferred revenue	142.3		146.2
Taxes	93.9		86.9
Interest	36.0		67.9
Wreckage and debris removal	5.0		9.0
Other	46.2		43.3
	$	489.0	$	584.4

Other liabilities consisted of the following (in millions):



	March 31, 2013		December 31, 2012
Deferred revenue	$	215.7	$	224.5
Unrecognized tax benefits (inclusive of interest and penalties)	132.4		129.6
Intangible liabilities	101.9		118.0
Supplemental executive retirement plan liabilities	38.4		33.3
Personnel costs	28.4		31.6
Other	31.6		36.4
	$	548.4	$	573.4

Accumulated other comprehensive income consisted of the following (in millions):



	March 31, 2013			December 31, 2012
Derivative Instruments	$	19.4		$	24.4
Other	(4.4		)	(4.3		)
	$	15.0		$	20.1

Concentration Risk

We are exposed to credit risk relating to our receivables from customers, our cash and cash equivalents and investments and our use of derivatives in connection with the management of foreign currency exchange rate risk. We mitigate our credit risk relating to receivables from customers, which consist primarily of major international, government-owned and independent oil and gas companies, by performing ongoing credit evaluations. We also maintain reserves for potential credit losses, which to date have been within management's expectations. We mitigate our credit risk relating to cash and investments by focusing on diversification and quality of instruments. Cash equivalents and short-term investments consist of a portfolio of high-grade instruments. Custody of cash and cash equivalents and short-term investments is maintained at several well-capitalized financial institutions, and we monitor the financial condition of those financial institutions.

We mitigate our credit risk relating to counterparties of our derivatives through a variety of techniques, including transacting with multiple, high-quality financial institutions, thereby limiting our exposure to individual counterparties and generally by entering into International Swaps and Derivatives Association, Inc. (“ISDA”) Master Agreements, which include provisions for a legally enforceable master netting agreement with almost all of our derivative counterparties. The terms of the ISDA agreements may also include credit support requirements, cross default provisions, termination events, or set-off provisions, in addition to a master netting agreement. Legally enforceable master netting agreements reduce credit risk by providing protection in bankruptcy in certain circumstances and generally permitting the closeout and netting of transactions with the same counterparty upon the occurrence of certain events.

During the three-month period ended March 31, 2013, one customer in our Floaters segment provided an aggregate $200.1 million, or 17%, of our consolidated revenues.

Revenues provided by our drilling operations in the U.S. Gulf of Mexico during the three-month period ended March 31, 2013 totaled $401.5 million, or 35%, of our consolidated revenues, of which 75% were provided by our Floaters segment. Revenues provided by our drilling operations in Brazil during the three-month period ended March 31, 2013 totaled $243.3 million, or 21%, of our consolidated revenues, all of which were provided by our Floaters segment.

Guarantee Of Registered Securities

Guarantee of Registered Securities

On May 31, 2011, Ensco plc completed a merger transaction (the "Merger") with Pride International Inc. ("Pride"). In connection with the Merger, Ensco plc and Pride entered into a supplemental indenture to the indenture dated as of July 1, 2004 between Pride and the Bank of New York Mellon, as indenture trustee, providing for, among other matters, the full and unconditional guarantee by Ensco plc of Pride’s 8.50% unsecured senior notes due 2019, 6.875% unsecured senior notes due 2020 and 7.875% unsecured senior notes due 2040, which had an aggregate outstanding principal balance as of March 31, 2013 of $1.7 billion. The Ensco plc guarantee provides for the unconditional and irrevocable guarantee of the prompt payment, when due, of any amount owed to the holders of the notes.

Ensco plc also is a full and unconditional guarantor of the 7.20% debentures due 2027 issued by Ensco International, Inc. in November 1997, which had an aggregate outstanding principal balance of $150.0 million as of March 31, 2013.

All guarantees are unsecured obligations of Ensco plc ranking equal in right of payment with all of its existing and future unsecured and unsubordinated indebtedness.

The following tables present the unaudited condensed consolidating statements of income for the three-month periods ended March 31, 2013 and 2012; the unaudited condensed consolidating statements of comprehensive income for the three-month periods ended March 31, 2013 and 2012; the condensed consolidating balance sheets as of March 31, 2013 (unaudited) and December 31, 2012; and the unaudited condensed consolidating statements of cash flows for the three-month periods ended March 31, 2013 and 2012, in accordance with Rule 3-10 of Regulation S-X.

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF INCOME Three Months Ended March 31, 2013 (in millions) (Unaudited)

	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	5.5		$	38.1		$	—		$	1,183.7		$	(77.4	)	$	1,149.9
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	12.4			38.1			—			587.7			(77.4		)	560.8
Depreciation	.1			.8			—			148.1			—			149.0
General and administrative	16.9			.2			—			20.7			—			37.8
OPERATING (LOSS) INCOME	(23.9		)	(1.0		)	—			427.2			—			402.3
OTHER (EXPENSE) INCOME, NET	(14.6		)	(7.4		)	(14.6		)	6.8			—			(29.8		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(38.5		)	(8.4		)	(14.6		)	434.0			—			372.5
INCOME TAX PROVISION	—			29.5			—			22.2			—			51.7
DISCONTINUED OPERATIONS, NET	—			—			—			(.9		)	—			(.9		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	355.6			111.7			52.4			—			(519.7		)	—
NET INCOME	317.1			73.8			37.8			410.9			(519.7		)	319.9
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.8		)	—			(2.8		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	317.1		$	73.8		$	37.8		$	408.1		$	(519.7	)	$	317.1

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF INCOME Three Months Ended March 31, 2012 (in millions) (Unaudited)

	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	21.9		$	10.6		$	—		$	1,037.0		$	(48.9	)	$	1,020.6
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	6.9			10.6			—			533.6			(48.9		)	502.2
Depreciation	.1			.8			—			135.1			—			136.0
General and administrative	14.6			—			—			23.6			—			38.2
OPERATING INCOME (LOSS)	.3			(.8		)	—			344.7			—			344.2
OTHER EXPENSE, NET	(11.2		)	(.3		)	(11.7		)	(3.5		)	—			(26.7		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(10.9		)	(1.1		)	(11.7		)	341.2			—			317.5
INCOME TAX PROVISION	—			11.2			—			25.8			—			37.0
DISCONTINUED OPERATIONS, NET	—			—			—			(13.1		)	—			(13.1		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	276.3			44.2			79.7			—			(400.2		)	—
NET INCOME	265.4			31.9			68.0			302.3			(400.2		)	267.4
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.0		)	—			(2.0		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	265.4		$	31.9		$	68.0		$	300.3		$	(400.2	)	$	265.4

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

Three Months Ended March 31, 2013

(in millions)

(Unaudited)



	Ensco plc		ENSCO International Incorporated			Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total

NET INCOME	$	317.1	$	73.8		$	37.8	$	410.9		$	(519.7	)	$	319.9
OTHER COMPREHENSIVE (LOSS) INCOME, NET
Net change in fair value of derivatives	—		(4.0		)	—		—			—			(4.0		)
Reclassification of net gains and losses on derivative instruments from other comprehensive loss (income) into net income	—		.1			—		(1.1		)	—			(1.0		)
Other	—		—			—		(.1		)	—			(.1		)
NET OTHER COMPREHENSIVE LOSS	—		(3.9		)	—		(1.2		)	—			(5.1		)

COMPREHENSIVE INCOME	317.1		69.9			37.8		409.7			(519.7		)	314.8
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—		(2.8		)	—			(2.8		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	317.1	$	69.9		$	37.8	$	406.9		$	(519.7	)	$	312.0

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

Three Months Ended March 31, 2012

(in millions)

(Unaudited)



	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total

NET INCOME	$	265.4	$	31.9	$	68.0	$	302.3		$	(400.2	)	$	267.4
OTHER COMPREHENSIVE (LOSS) INCOME, NET
Net change in fair value of derivatives	—		1.9		—		4.4			—			6.3
Reclassification of net gains and losses on derivative instruments from other comprehensive loss (income) into net income	—		.1		—		(.2		)	—			(.1		)
Other	—		—		—		(1.9		)	—			(1.9		)
NET OTHER COMPREHENSIVE (LOSS) INCOME	—		2.0		—		2.3			—			4.3

COMPREHENSIVE INCOME	265.4		33.9		68.0		304.6			(400.2		)	271.7
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—		—		(2.0		)	—			(2.0		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	265.4	$	33.9	$	68.0	$	302.6		$	(400.2	)	$	269.7

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS March 31, 2013 (in millions) (Unaudited)

	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco		Consolidating Adjustments			Total
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	289.1	$	—	$	115.0	$	157.7	$	—		$	561.8
Accounts receivable, net	—		.3		—		808.8		—			809.1
Accounts receivable from affiliates	1,296.2		166.4		1.4		1,577.1		(3,041.1		)	—
Other	2.9		24.8		—		386.3		—			414.0
Total current assets	1,588.2		191.5		116.4		2,929.9		(3,041.1		)	1,784.9
PROPERTY AND EQUIPMENT, AT COST	2.1		30.1		—		15,861.4		—			15,893.6
Less accumulated depreciation	1.2		23.6		—		2,713.6		—			2,738.4
Property and equipment, net	.9		6.5		—		13,147.8		—			13,155.2
GOODWILL	—		—		—		3,274.0		—			3,274.0
DUE FROM AFFILIATES	2,677.0		3,758.5		1,640.4		5,125.2		(13,201.1		)	—
INVESTMENTS IN AFFILIATES	13,831.0		2,799.8		3,836.2		—		(20,467.0		)	—
OTHER ASSETS, NET	10.7		64.8		—		302.9		—			378.4
	$	18,107.8	$	6,821.1	$	5,593.0	$	24,779.8	$	(36,709.2	)	$	18,592.5
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	4.9	$	47.5	$	23.4	$	722.1	$	—		$	797.9
Accounts payable to affiliates	1,653.7		56.5		—		1,330.9		(3,041.1		)	—
Current maturities of long-term debt	—		—		—		47.5		—			47.5
Total current liabilities	1,658.6		104.0		23.4		2,100.5		(3,041.1		)	845.4
DUE TO AFFILIATES	1,910.0		2,260.6		954.6		8,075.9		(13,201.1		)	—
LONG-TERM DEBT	2,470.6		149.1		2,032.7		130.9		—			4,783.3
DEFERRED INCOME TAXES	—		325.2		—		21.6		—			346.8
OTHER LIABILITIES	—		1.0		10.5		536.9		—			548.4
ENSCO SHAREHOLDERS' EQUITY	12,068.6		3,981.2		2,571.8		13,907.5		(20,467.0		)	12,062.1
NONCONTROLLING INTERESTS	—		—		—		6.5		—			6.5
Total equity	12,068.6		3,981.2		2,571.8		13,914.0		(20,467.0		)	12,068.6
	$	18,107.8	$	6,821.1	$	5,593.0	$	24,779.8	$	(36,709.2	)	$	18,592.5

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2012 (in millions)

	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco		Consolidating Adjustments			Total
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	271.8	$	1.7	$	85.0	$	128.6	$	—		$	487.1
Accounts receivable, net	—		.2		—		811.2		—			811.4
Accounts receivable from affiliates	1,294.5		226.5		—		2,375.1		(3,896.1		)	—
Other	2.8		24.9		—		397.7		—			425.4
Total current assets	1,569.1		253.3		85.0		3,712.6		(3,896.1		)	1,723.9
PROPERTY AND EQUIPMENT, AT COST	2.1		30.2		—		15,704.8		—			15,737.1
Less accumulated depreciation	1.1		23.5		—		2,566.9		—			2,591.5
Property and equipment, net	1.0		6.7		—		13,137.9		—			13,145.6
GOODWILL	—		—		—		3,274.0		—			3,274.0
DUE FROM AFFILIATES	3,483.5		3,594.7		1,628.4		4,748.9		(13,455.5		)	—
INVESTMENTS IN AFFILIATES	13,469.3		2,693.8		3,824.8		—		(19,987.9		)	—
OTHER ASSETS, NET	11.3		67.4		—		343.1		—			421.8
	$	18,534.2	$	6,615.9	$	5,538.2	$	25,216.5	$	(37,339.5	)	$	18,565.3
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	31.0	$	28.1	$	34.1	$	849.0	$	—		$	942.2
Accounts payable to affiliates	2,364.8		136.9		—		1,394.4		(3,896.1		)	—
Current maturities of long-term debt	—		—		—		47.5		—			47.5
Total current liabilities	2,395.8		165.0		34.1		2,290.9		(3,896.1		)	989.7
DUE TO AFFILIATES	1,816.7		2,054.7		877.5		8,706.6		(13,455.5		)	—
LONG-TERM DEBT	2,469.6		149.0		2,040.8		139.0		—			4,798.4
DEFERRED INCOME TAXES	—		335.1		—		16.6		—			351.7
OTHER LIABILITIES	—		—		10.8		562.6		—			573.4
ENSCO SHAREHOLDERS' EQUITY	11,852.1		3,912.1		2,575.0		13,495.1		(19,987.9		)	11,846.4
NONCONTROLLING INTERESTS	—		—		—		5.7		—			5.7
Total equity	11,852.1		3,912.1		2,575.0		13,500.8		(19,987.9		)	11,852.1
	$	18,534.2	$	6,615.9	$	5,538.2	$	25,216.5	$	(37,339.5	)	$	18,565.3



ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Three Months Ended March 31, 2013 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.		Other Non-guarantor Subsidiaries of Ensco			Consolidating Adjustments		Total
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	$	(55.3	)	$	(34.0	)	$	11.3	$	420.1		$	—	$	342.1
INVESTING ACTIVITIES
Additions to property and equipment	—			—			—		(168.3		)	—		(168.3		)
Other	—			.1			—		.8			—		.9
Net cash provided by (used in) investing activities of continuing operations	—			.1			—		(167.5		)	—		(167.4		)
FINANCING ACTIVITIES
Cash dividends paid	(116.5		)	—			—		—			—		(116.5		)
Proceeds from exercise of share options	13.4			—			—		—			—		13.4
Reduction of long-term borrowings	—			—			—		(7.1		)	—		(7.1		)
Advances from (to) affiliates	179.4			32.2			18.7		(230.3		)	—		—
Other	(3.7		)	—			—		(1.8		)	—		(5.5		)
Net cash provided by (used in) financing activities of continuing operations	72.6			32.2			18.7		(239.2		)	—		(115.7		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—		.2			—		.2
Investing activities	—			—			—		15.5			—		15.5
Net cash provided by discontinued operations	—			—			—		15.7			—		15.7
Effect of exchange rate changes on cash and cash equivalents	—			—			—		—			—		—
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	17.3			(1.7		)	30.0		29.1			—		74.7
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	271.8			1.7			85.0		128.6			—		487.1
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	289.1		$	—		$	115.0	$	157.7		$	—	$	561.8



ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Three Months Ended March 31, 2012 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-guarantor Subsidiaries of Ensco			Consolidating Adjustments		Total
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	$	(20.3	)	$	(21.8	)	$	(67.4	)	$	665.1		$	—	$	555.6
INVESTING ACTIVITIES
Additions to property and equipment	—			—			—			(764.1		)	—		(764.1		)
Other	—			.7			—			4.4			—		5.1
Net cash provided by (used in) investing activities of continuing operations	—			.7			—			(759.7		)	—		(759.0		)
FINANCING ACTIVITIES
Cash dividends paid	(86.8		)	—			—			—			—		(86.8		)
Commercial paper borrowings, net	75.0			—			—			—			—		75.0
Proceeds from exercise of share options				11.9			—			—			—		11.9
Reduction of long-term borrowings	—			—			—			(7.1		)	—		(7.1		)
Advances (to) from affiliates	(192.3		)	22.8			74.1			95.4			—		—
Other	—			(.1		)	—			(3.5		)	—		(3.6		)
Net cash (used in) provided by financing activities of continuing operations	(204.1		)	34.6			74.1			84.8			—		(10.6		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—			(8.3		)	—		(8.3		)
Net cash used in discontinued operations	—			—			—			(8.3		)	—		(8.3		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			.5			—		.5
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(224.4		)	13.5			6.7			(17.6		)	—		(221.8		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	236.6			—			22.6			171.5			—		430.7
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	12.2		$	13.5		$	29.3		$	153.9		$	—	$	208.9

Fair Value Measurements (Tables)

Schedule Of Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis

The following fair value hierarchy table categorizes information regarding our financial assets and liabilities measured at fair value on a recurring basis (in millions):



	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
As of March 31, 2013
Supplemental executive retirement plan assets	$	35.2	$	—		$	—	$	35.2
Total financial assets	$	35.2	$	—		$	—	$	35.2
Derivatives, net	$	—	$	(3.3	)	$	—	$	(3.3	)
Total financial liabilities	$	—	$	(3.3	)	$	—	$	(3.3	)

As of December 31, 2012
Supplemental executive retirement plan assets	$	29.8	$	—		$	—	$	29.8
Derivatives, net	—		5.2			—		5.2
Total financial assets	$	29.8	$	5.2		$	—	$	35.0

Schedule Of Carrying Values And Estimated Fair Values Of Debt Instruments

The carrying values and estimated fair values of our long-term debt instruments were as follows (in millions):



	March 31, 2013				December 31, 2012
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
4.70% Senior notes due 2021	$	1,475.3	$	1,679.6	$	1,474.7	$	1,715.6
6.875% Senior notes due 2020	1,036.9		1,123.5		1,040.6		1,138.3
3.25% Senior notes due 2016	995.3		1,066.1		995.1		1,068.9
8.50% Senior notes due 2019	612.5		661.9		616.4		661.7
7.875% Senior notes due 2040	383.5		433.3		383.8		423.9
7.20% Debentures due 2027	149.0		189.3		149.0		193.2
4.33% MARAD bonds, including current maturities, due 2016	104.3		105.0		112.3		113.0
6.36% MARAD bonds, including current maturities, due 2015	38.0		41.2		38.0		41.7
4.65% MARAD bonds, including current maturities, due 2020	36.0		41.1		36.0		41.4
Total	$	4,830.8	$	5,341.0	$	4,845.9	$	5,397.7

Derivative Instruments (Tables)

Schedule Of Derivatives At Fair Value

Derivatives recorded at fair value in our condensed consolidated balance sheets consisted of the following (in millions):



	Derivative Assets				Derivative Liabilities
	March 31, 2013		December 31, 2012		March 31, 2013		December 31, 2012
Derivatives Designated as Hedging Instruments
Foreign currency forward contracts - current⁽¹⁾	$	3.7	$	5.0	$	5.1	$	.3
Foreign currency forward contracts - non-current⁽²⁾	.3		.5		1.0		—
	4.0		5.5		6.1		.3
Derivatives Not Designated as Hedging Instruments
Foreign currency forward contracts - current⁽¹⁾	.1		.2		1.3		.2
	.1		.2		1.3		.2
Total	$	4.1	$	5.7	$	7.4	$	.5


⁽¹⁾	Derivative assets and liabilities that have maturity dates equal to or less than twelve months from the respective balance sheet date were included in other current assets and accrued liabilities and other, respectively, on our condensed consolidated balance sheets.


⁽²⁾	Derivative assets and liabilities that have maturity dates greater than twelve months from the respective balance sheet date were included in other assets, net, and other liabilities, respectively, on our condensed consolidated balance sheets.

Gains And Losses On Derivatives Designated As Cash Flow Hedges

Gains and losses, net of tax, on derivatives designated as cash flow hedges included in our condensed consolidated statements of income and our condensed consolidated statements of comprehensive income for the three-month periods ended March 31, 2013 and 2012 were as follows (in millions):



	(Loss) Gain Recognized in Other Comprehensive Income (Effective Portion)					(Loss) Gain Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)⁽¹⁾					Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)⁽²⁾
	2013			2012		2013			2012		2013		2012
Interest rate lock contracts⁽³⁾	$	—		$	—	$	(.1	)	$	.1	$	—	$	—
Foreign currency forward contracts⁽⁴⁾	(4.0		)	6.3		1.1			—		.2		(.8		)
Total	$	(4.0	)	$	6.3	$	1.0		$	.1	$	.2	$	(.8	)


⁽¹⁾	Changes in the fair value of cash flow hedges are recorded in AOCI. Amounts recorded in AOCI associated with cash flow hedges are subsequently reclassified into contract drilling, depreciation or interest expense as earnings are affected by the underlying hedged forecasted transaction.


⁽²⁾	Gains and losses recognized in income for ineffectiveness and amounts excluded from effectiveness testing were included in other, net, in our condensed consolidated statements of income.


⁽³⁾	Gains and losses on interest rate lock derivatives reclassified from AOCI into income (effective portion) were included in interest expense, net in our condensed consolidated statements of income.


⁽⁴⁾	During the three-month period ended March 31, 2013

Noncontrolling Interests (Tables)

Income from Continuing Operations Attributable to Ensco

Income from continuing operations attributable to Ensco for the three-month periods ended March 31, 2013 and 2012 was as follows (in millions):



	2013			2012
Income from continuing operations	$	320.8		$	280.5
Income from continuing operations attributable to noncontrolling interests	(2.8		)	(2.0		)
Income from continuing operations attributable to Ensco	$	318.0		$	278.5

Earnings Per Share (Tables)

Reconciliation Of Net Income Attributable To Ensco Shares

The following table is a reconciliation of net income attributable to Ensco shares used in our basic and diluted EPS computations for the three-month periods ended March 31, 2013 and 2012 (in millions):



	2013			2012
Net income attributable to Ensco	$	317.1		$	265.4
Net income allocated to non-vested share awards	(3.3		)	(2.7		)
Net income attributable to Ensco shares	$	313.8		$	262.7

Reconciliation Of Weighted-Average Shares Used In Earnings Per Share Computations

The following table is a reconciliation of the weighted-average shares outstanding used in our basic and diluted EPS computations for the three-month periods ended March 31, 2013 and 2012 (in millions):



	2013	2012
Weighted-average shares - basic	230.3	228.8
Potentially dilutive shares	.3	.4
Weighted-average shares - diluted	230.6	229.2

Discontinued Operations (Tables)

Summary of Loss from Discontinued Operations

The following table summarizes loss from discontinued operations for the three-month periods ended March 31, 2013 and 2012 (in millions):



	2013			2012
Revenues	$	—		$	5.8
Operating expenses	.1			21.4
Operating loss before income taxes	(.1		)	(15.6		)
Other income	.3			.5
Income tax benefit	—			2.0
Loss on disposal of discontinued operations, net	(1.1		)	—
Loss from discontinued operations	$	(.9	)	$	(13.1	)

Segment Information (Tables)

Schedule Of Segment Reporting Information

Three Months Ended March 31, 2013



	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total

Revenues	$	719.2	$	410.5	$	20.2	$	1,149.9	$	—		$	1,149.9
Operating expenses
Contract drilling (exclusive of depreciation)	344.9		200.2		15.7		560.8		—			560.8
Depreciation	107.1		40.3		—		147.4		1.6			149.0
General and administrative	—		—		—		—		37.8			37.8
Operating income (loss)	$	267.2	$	170.0	$	4.5	$	441.7	$	(39.4	)	$	402.3
Property and equipment, net	$	10,710.0	$	2,413.3	$	—	$	13,123.3	$	31.9		$	13,155.2

Three Months Ended March 31, 2012



	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total

Revenues	$	639.3	$	359.8	$	21.5	$	1,020.6	$	—		$	1,020.6
Operating expenses
Contract drilling (exclusive of depreciation)	312.9		173.6		15.7		502.2		—			502.2
Depreciation	91.0		41.4		—		132.4		3.6			136.0
General and administrative	—		—		—		—		38.2			38.2
Operating income (loss)	$	235.4	$	144.8	$	5.8	$	386.0	$	(41.8	)	$	344.2
Property and equipment, net	$	10,390.4	$	2,457.7	$	12.4	$	12,860.5	$	29.4		$	12,889.9

Schedule Of Geographic Distribution Of Rigs By Segment

As of March 31, 2013, the geographic distribution of our drilling rigs by operating segment was as follows:



	Floaters	Jackups	Total⁽¹⁾
North & South America (excluding Brazil)	8	14	22
Brazil	10	—	10
Europe & Mediterranean	1	8	9
Middle East & Africa	4	9	13
Asia & Pacific Rim	2	11	13
Asia & Pacific Rim (under construction)	3	3	6
Total	28	45	73


⁽¹⁾	We provide management services on three rigs owned by third-parties not included in the table above.

Supplemental Financial Information (Tables)

Accounts Receivable, Net

Accounts receivable, net, consisted of the following (in millions):



	March 31, 2013			December 31, 2012
Trade	$	814.8		$	812.4
Other	12.2			18.2
	827.0			830.6
Allowance for doubtful accounts	(17.9		)	(19.2		)
	$	809.1		$	811.4

Other Current Assets

Other current assets consisted of the following (in millions):



	March 31, 2013		December 31, 2012
Inventory	$	215.9	$	207.8
Prepaid taxes	60.9		62.2
Short-term investments	50.0		50.0
Deferred mobilization costs	29.6		33.7
Deferred tax assets	21.2		14.6
Prepaid expenses	14.5		20.3
Assets held for sale	—		14.2
Other	21.9		22.6
	$	414.0	$	425.4

Other Assets, Net

Other assets, net, consisted of the following (in millions):



	March 31, 2013		December 31, 2012
Intangible assets	$	115.0	$	143.3
Unbilled receivables	74.9		77.1
Prepaid taxes on intercompany transfers of property	56.8		58.3
Supplemental executive retirement plan assets	35.2		29.8
Warranty and other claim receivables	30.6		30.6
Deferred tax assets	19.0		19.3
Deferred mobilization costs	12.2		20.8
Wreckage and debris removal receivables	5.9		13.2
Other	28.8		29.4
	$	378.4	$	421.8

Accrued Liabilities And Other

Accrued liabilities and other consisted of the following (in millions):



	March 31, 2013		December 31, 2012
Personnel costs	$	165.6	$	231.1
Deferred revenue	142.3		146.2
Taxes	93.9		86.9
Interest	36.0		67.9
Wreckage and debris removal	5.0		9.0
Other	46.2		43.3
	$	489.0	$	584.4

Other Liabilities

Other liabilities consisted of the following (in millions):



	March 31, 2013		December 31, 2012
Deferred revenue	$	215.7	$	224.5
Unrecognized tax benefits (inclusive of interest and penalties)	132.4		129.6
Intangible liabilities	101.9		118.0
Supplemental executive retirement plan liabilities	38.4		33.3
Personnel costs	28.4		31.6
Other	31.6		36.4
	$	548.4	$	573.4

Accumulated Other Comprehensive Income

Accumulated other comprehensive income consisted of the following (in millions):



	March 31, 2013			December 31, 2012
Derivative Instruments	$	19.4		$	24.4
Other	(4.4		)	(4.3		)
	$	15.0		$	20.1

Guarantee Of Registered Securities (Tables)

Condensed Consolidating Statements Of Income

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF INCOME Three Months Ended March 31, 2013 (in millions) (Unaudited)

	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	5.5		$	38.1		$	—		$	1,183.7		$	(77.4	)	$	1,149.9
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	12.4			38.1			—			587.7			(77.4		)	560.8
Depreciation	.1			.8			—			148.1			—			149.0
General and administrative	16.9			.2			—			20.7			—			37.8
OPERATING (LOSS) INCOME	(23.9		)	(1.0		)	—			427.2			—			402.3
OTHER (EXPENSE) INCOME, NET	(14.6		)	(7.4		)	(14.6		)	6.8			—			(29.8		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(38.5		)	(8.4		)	(14.6		)	434.0			—			372.5
INCOME TAX PROVISION	—			29.5			—			22.2			—			51.7
DISCONTINUED OPERATIONS, NET	—			—			—			(.9		)	—			(.9		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	355.6			111.7			52.4			—			(519.7		)	—
NET INCOME	317.1			73.8			37.8			410.9			(519.7		)	319.9
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.8		)	—			(2.8		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	317.1		$	73.8		$	37.8		$	408.1		$	(519.7	)	$	317.1

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF INCOME Three Months Ended March 31, 2012 (in millions) (Unaudited)

	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	21.9		$	10.6		$	—		$	1,037.0		$	(48.9	)	$	1,020.6
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	6.9			10.6			—			533.6			(48.9		)	502.2
Depreciation	.1			.8			—			135.1			—			136.0
General and administrative	14.6			—			—			23.6			—			38.2
OPERATING INCOME (LOSS)	.3			(.8		)	—			344.7			—			344.2
OTHER EXPENSE, NET	(11.2		)	(.3		)	(11.7		)	(3.5		)	—			(26.7		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(10.9		)	(1.1		)	(11.7		)	341.2			—			317.5
INCOME TAX PROVISION	—			11.2			—			25.8			—			37.0
DISCONTINUED OPERATIONS, NET	—			—			—			(13.1		)	—			(13.1		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	276.3			44.2			79.7			—			(400.2		)	—
NET INCOME	265.4			31.9			68.0			302.3			(400.2		)	267.4
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.0		)	—			(2.0		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	265.4		$	31.9		$	68.0		$	300.3		$	(400.2	)	$	265.4

Condensed Consolidating Statements Of Comprehensive Income [Table Text Block]

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

Three Months Ended March 31, 2013

(in millions)

(Unaudited)



	Ensco plc		ENSCO International Incorporated			Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total

NET INCOME	$	317.1	$	73.8		$	37.8	$	410.9		$	(519.7	)	$	319.9
OTHER COMPREHENSIVE (LOSS) INCOME, NET
Net change in fair value of derivatives	—		(4.0		)	—		—			—			(4.0		)
Reclassification of net gains and losses on derivative instruments from other comprehensive loss (income) into net income	—		.1			—		(1.1		)	—			(1.0		)
Other	—		—			—		(.1		)	—			(.1		)
NET OTHER COMPREHENSIVE LOSS	—		(3.9		)	—		(1.2		)	—			(5.1		)

COMPREHENSIVE INCOME	317.1		69.9			37.8		409.7			(519.7		)	314.8
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—		(2.8		)	—			(2.8		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	317.1	$	69.9		$	37.8	$	406.9		$	(519.7	)	$	312.0

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME

Three Months Ended March 31, 2012

(in millions)

(Unaudited)



	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total

NET INCOME	$	265.4	$	31.9	$	68.0	$	302.3		$	(400.2	)	$	267.4
OTHER COMPREHENSIVE (LOSS) INCOME, NET
Net change in fair value of derivatives	—		1.9		—		4.4			—			6.3
Reclassification of net gains and losses on derivative instruments from other comprehensive loss (income) into net income	—		.1		—		(.2		)	—			(.1		)
Other	—		—		—		(1.9		)	—			(1.9		)
NET OTHER COMPREHENSIVE (LOSS) INCOME	—		2.0		—		2.3			—			4.3

COMPREHENSIVE INCOME	265.4		33.9		68.0		304.6			(400.2		)	271.7
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—		—		(2.0		)	—			(2.0		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	265.4	$	33.9	$	68.0	$	302.6		$	(400.2	)	$	269.7

Condensed Consolidating Balance Sheets

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS March 31, 2013 (in millions) (Unaudited)

	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco		Consolidating Adjustments			Total
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	289.1	$	—	$	115.0	$	157.7	$	—		$	561.8
Accounts receivable, net	—		.3		—		808.8		—			809.1
Accounts receivable from affiliates	1,296.2		166.4		1.4		1,577.1		(3,041.1		)	—
Other	2.9		24.8		—		386.3		—			414.0
Total current assets	1,588.2		191.5		116.4		2,929.9		(3,041.1		)	1,784.9
PROPERTY AND EQUIPMENT, AT COST	2.1		30.1		—		15,861.4		—			15,893.6
Less accumulated depreciation	1.2		23.6		—		2,713.6		—			2,738.4
Property and equipment, net	.9		6.5		—		13,147.8		—			13,155.2
GOODWILL	—		—		—		3,274.0		—			3,274.0
DUE FROM AFFILIATES	2,677.0		3,758.5		1,640.4		5,125.2		(13,201.1		)	—
INVESTMENTS IN AFFILIATES	13,831.0		2,799.8		3,836.2		—		(20,467.0		)	—
OTHER ASSETS, NET	10.7		64.8		—		302.9		—			378.4
	$	18,107.8	$	6,821.1	$	5,593.0	$	24,779.8	$	(36,709.2	)	$	18,592.5
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	4.9	$	47.5	$	23.4	$	722.1	$	—		$	797.9
Accounts payable to affiliates	1,653.7		56.5		—		1,330.9		(3,041.1		)	—
Current maturities of long-term debt	—		—		—		47.5		—			47.5
Total current liabilities	1,658.6		104.0		23.4		2,100.5		(3,041.1		)	845.4
DUE TO AFFILIATES	1,910.0		2,260.6		954.6		8,075.9		(13,201.1		)	—
LONG-TERM DEBT	2,470.6		149.1		2,032.7		130.9		—			4,783.3
DEFERRED INCOME TAXES	—		325.2		—		21.6		—			346.8
OTHER LIABILITIES	—		1.0		10.5		536.9		—			548.4
ENSCO SHAREHOLDERS' EQUITY	12,068.6		3,981.2		2,571.8		13,907.5		(20,467.0		)	12,062.1
NONCONTROLLING INTERESTS	—		—		—		6.5		—			6.5
Total equity	12,068.6		3,981.2		2,571.8		13,914.0		(20,467.0		)	12,068.6
	$	18,107.8	$	6,821.1	$	5,593.0	$	24,779.8	$	(36,709.2	)	$	18,592.5

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2012 (in millions)

	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco		Consolidating Adjustments			Total
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	271.8	$	1.7	$	85.0	$	128.6	$	—		$	487.1
Accounts receivable, net	—		.2		—		811.2		—			811.4
Accounts receivable from affiliates	1,294.5		226.5		—		2,375.1		(3,896.1		)	—
Other	2.8		24.9		—		397.7		—			425.4
Total current assets	1,569.1		253.3		85.0		3,712.6		(3,896.1		)	1,723.9
PROPERTY AND EQUIPMENT, AT COST	2.1		30.2		—		15,704.8		—			15,737.1
Less accumulated depreciation	1.1		23.5		—		2,566.9		—			2,591.5
Property and equipment, net	1.0		6.7		—		13,137.9		—			13,145.6
GOODWILL	—		—		—		3,274.0		—			3,274.0
DUE FROM AFFILIATES	3,483.5		3,594.7		1,628.4		4,748.9		(13,455.5		)	—
INVESTMENTS IN AFFILIATES	13,469.3		2,693.8		3,824.8		—		(19,987.9		)	—
OTHER ASSETS, NET	11.3		67.4		—		343.1		—			421.8
	$	18,534.2	$	6,615.9	$	5,538.2	$	25,216.5	$	(37,339.5	)	$	18,565.3
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	31.0	$	28.1	$	34.1	$	849.0	$	—		$	942.2
Accounts payable to affiliates	2,364.8		136.9		—		1,394.4		(3,896.1		)	—
Current maturities of long-term debt	—		—		—		47.5		—			47.5
Total current liabilities	2,395.8		165.0		34.1		2,290.9		(3,896.1		)	989.7
DUE TO AFFILIATES	1,816.7		2,054.7		877.5		8,706.6		(13,455.5		)	—
LONG-TERM DEBT	2,469.6		149.0		2,040.8		139.0		—			4,798.4
DEFERRED INCOME TAXES	—		335.1		—		16.6		—			351.7
OTHER LIABILITIES	—		—		10.8		562.6		—			573.4
ENSCO SHAREHOLDERS' EQUITY	11,852.1		3,912.1		2,575.0		13,495.1		(19,987.9		)	11,846.4
NONCONTROLLING INTERESTS	—		—		—		5.7		—			5.7
Total equity	11,852.1		3,912.1		2,575.0		13,500.8		(19,987.9		)	11,852.1
	$	18,534.2	$	6,615.9	$	5,538.2	$	25,216.5	$	(37,339.5	)	$	18,565.3

Condensed Consolidating Statements Of Cash Flows



ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Three Months Ended March 31, 2013 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.		Other Non-guarantor Subsidiaries of Ensco			Consolidating Adjustments		Total
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	$	(55.3	)	$	(34.0	)	$	11.3	$	420.1		$	—	$	342.1
INVESTING ACTIVITIES
Additions to property and equipment	—			—			—		(168.3		)	—		(168.3		)
Other	—			.1			—		.8			—		.9
Net cash provided by (used in) investing activities of continuing operations	—			.1			—		(167.5		)	—		(167.4		)
FINANCING ACTIVITIES
Cash dividends paid	(116.5		)	—			—		—			—		(116.5		)
Proceeds from exercise of share options	13.4			—			—		—			—		13.4
Reduction of long-term borrowings	—			—			—		(7.1		)	—		(7.1		)
Advances from (to) affiliates	179.4			32.2			18.7		(230.3		)	—		—
Other	(3.7		)	—			—		(1.8		)	—		(5.5		)
Net cash provided by (used in) financing activities of continuing operations	72.6			32.2			18.7		(239.2		)	—		(115.7		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—		.2			—		.2
Investing activities	—			—			—		15.5			—		15.5
Net cash provided by discontinued operations	—			—			—		15.7			—		15.7
Effect of exchange rate changes on cash and cash equivalents	—			—			—		—			—		—
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	17.3			(1.7		)	30.0		29.1			—		74.7
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	271.8			1.7			85.0		128.6			—		487.1
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	289.1		$	—		$	115.0	$	157.7		$	—	$	561.8



ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Three Months Ended March 31, 2012 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-guarantor Subsidiaries of Ensco			Consolidating Adjustments		Total
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	$	(20.3	)	$	(21.8	)	$	(67.4	)	$	665.1		$	—	$	555.6
INVESTING ACTIVITIES
Additions to property and equipment	—			—			—			(764.1		)	—		(764.1		)
Other	—			.7			—			4.4			—		5.1
Net cash provided by (used in) investing activities of continuing operations	—			.7			—			(759.7		)	—		(759.0		)
FINANCING ACTIVITIES
Cash dividends paid	(86.8		)	—			—			—			—		(86.8		)
Commercial paper borrowings, net	75.0			—			—			—			—		75.0
Proceeds from exercise of share options				11.9			—			—			—		11.9
Reduction of long-term borrowings	—			—			—			(7.1		)	—		(7.1		)
Advances (to) from affiliates	(192.3		)	22.8			74.1			95.4			—		—
Other	—			(.1		)	—			(3.5		)	—		(3.6		)
Net cash (used in) provided by financing activities of continuing operations	(204.1		)	34.6			74.1			84.8			—		(10.6		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—			(8.3		)	—		(8.3		)
Net cash used in discontinued operations	—			—			—			(8.3		)	—		(8.3		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			.5			—		.5
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(224.4		)	13.5			6.7			(17.6		)	—		(221.8		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	236.6			—			22.6			171.5			—		430.7
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	12.2		$	13.5		$	29.3		$	153.9		$	—	$	208.9

Fair Value Measurements (Schedule Of Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Supplemental executive retirement plan assets

$ 35.2

$ 29.8

Derivatives, net

5.2

Total financial assets

35.2

35.0

Derivatives, net

(3.3)

Total financial liabilities

(3.3)

Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Supplemental executive retirement plan assets

35.2

29.8

Derivatives, net

0

Total financial assets

35.2

29.8

Derivatives, net

0

Total financial liabilities

0

Significant Other Observable Inputs (Level 2) [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Supplemental executive retirement plan assets

0

Derivatives, net

5.2

Total financial assets

0

5.2

Derivatives, net

(3.3)

Total financial liabilities

(3.3)

Significant Unobservable Inputs (Level 3) [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Supplemental executive retirement plan assets

0

Derivatives, net

0

Total financial assets

0

Derivatives, net

0

Total financial liabilities

$ 0

Fair Value Measurements (Schedule Of Carrying Values And Estimated Fair Values Of Debt Instruments) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

$ 4,830.8

$ 4,845.9

Estimated Fair Value

5,341.0

5,397.7

4.70% Senior notes due 2021 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

1,475.3

1,474.7

Estimated Fair Value

1,679.6

1,715.6

Debt instrument, interest rate, stated percentage

4.70%

6.875% Senior notes due 2020 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

1,036.9

1,040.6

Estimated Fair Value

1,123.5

1,138.3

Debt instrument, interest rate, stated percentage

6.875%

3.25% Senior notes due 2016 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

995.3

995.1

Estimated Fair Value

1,066.1

1,068.9

Debt instrument, interest rate, stated percentage

3.25%

8.50% Senior notes due 2019 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

612.5

616.4

Estimated Fair Value

661.9

661.7

Debt instrument, interest rate, stated percentage

8.50%

7.875% Senior notes due 2040 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

383.5

383.8

Estimated Fair Value

433.3

423.9

Debt instrument, interest rate, stated percentage

7.875%

7.20% Debentures due 2027 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

149.0

Estimated Fair Value

189.3

193.2

Debt instrument, interest rate, stated percentage

7.20%

4.33% MARAD bonds, including current maturities, due 2016 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

104.3

112.3

Estimated Fair Value

105.0

113.0

Debt instrument, interest rate, stated percentage

4.33%

6.36% MARAD bonds, including current maturities, due 2015 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

38.0

Estimated Fair Value

41.2

41.7

Debt instrument, interest rate, stated percentage

6.36%

4.65% MARAD bonds, including current maturities, due 2020 [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Carrying Value

36.0

Estimated Fair Value

$ 41.1

$ 41.4

Debt instrument, interest rate, stated percentage

4.65%

Derivative Instruments (Narrative) (Details) (USD $)

3 Months Ended

Mar. 31, 2013

Dec. 31, 2010

Mar. 31, 2013

Not Designated [Member]

Mar. 31, 2012

Not Designated [Member]

Mar. 31, 2013

Foreign Exchange [Member]

Cash Flow Hedges [Member]

Mar. 31, 2013

Foreign Exchange [Member]

Not Designated [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Derivative Liability, Fair Value, Net

$ (3,300,000)

Net assets associated with foreign currency derivatives

5,200,000

Maturity period of derivatives (in months)

18 months

Aggregate cash flow hedges outstanding

368,300,000

175,800,000

British pounds

140,000,000

Brazilian Reais Cash Flow Hedges Outstanding

138,800,000

Singapore dollars

35,100,000

23,100,000

Australian dollars

23,400,000

Euros

21,900,000

86,100,000

Other currencies

9,100,000

35,200,000

Swiss francs

17,200,000

Indonesian rupiahs

14,200,000

Net gain (Loss) on derivatives not designated as hedging instruments

$ (4,400,000)

$ 900,000

Derivative, Higher Remaining Maturity Range

18 months

Derivative Instruments (Schedule Of Derivatives At Fair Value) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Derivative [Line Items]

Total fair value of derivative assets

$ 4.1

$ 5.7

Total fair value of derivative liabilities

7.4

0.5

Designated As Hedging Instrument [Member]

Derivative [Line Items]

Total fair value of derivative assets

4.0

5.5

Total fair value of derivative liabilities

6.1

0.3

Designated As Hedging Instrument [Member] |
Foreign Currency Forward Contracts - Current [Member]

Derivative [Line Items]

Total fair value of derivative assets

3.7 ¹

5.0 ¹

Total fair value of derivative liabilities

5.1 ¹

0.3 ¹

Designated As Hedging Instrument [Member] |
Foreign Currency Forward Contracts - Non-Current [Member]

Derivative [Line Items]

Total fair value of derivative assets

0.3 ²

0.5 ²

Total fair value of derivative liabilities

1.0 ²

0 ²

Not Designated [Member]

Derivative [Line Items]

Total fair value of derivative assets

0.1

0.2

Total fair value of derivative liabilities

1.3

0.2

Not Designated [Member] |
Foreign Currency Forward Contracts - Current [Member]

Derivative [Line Items]

Total fair value of derivative assets

0.1 ¹

0.2 ¹

Total fair value of derivative liabilities

$ 1.3 ¹

$ 0.2 ¹

[1] Derivative assets and liabilities that have maturity dates equal to or less than twelve months from the respective balance sheet date were included in other current assets and accrued liabilities and other, respectively, on our condensed consolidated balance sheets.

[2] Derivative assets and liabilities that have maturity dates greater than twelve months from the respective balance sheet date were included in other assets, net, and other liabilities, respectively, on our condensed consolidated balance sheets.

Derivative Instruments (Gains And Losses On Derivatives Designated As Cash Flow Hedges) (Details) (USD $)

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Derivative [Line Items]

Net Gains To Be Reclassified To Earnings

$ 200,000

Interest Rate Lock Contracts [Member]

Derivative [Line Items]

Gain (Loss) Recognized in Other Comprehensive Income ("OCI") (Effective Portion)

0 ¹

Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)

(100,000)²

100,000 ²

Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)

0 ¹ ³

Foreign Currency Forward Contracts [Member]

Derivative [Line Items]

Gain (Loss) Recognized in Other Comprehensive Income ("OCI") (Effective Portion)

(4,000,000)¹

6,300,000 ¹

Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)

1,100,000 ¹

0 ¹

Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)

200,000 ¹ ³

(800,000)¹ ³

Foreign Currency Forward Contracts [Member] |
Contract Drilling [Member]

Derivative [Line Items]

Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)

900,000 ¹

Foreign Currency Forward Contracts [Member] |
Depreciation Expense [Member]

Derivative [Line Items]

Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)

200,000 ¹

Cash Flow Hedges [Member]

Derivative [Line Items]

Gain (Loss) Recognized in Other Comprehensive Income ("OCI") (Effective Portion)

(4,000,000)

6,300,000

Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)

1,000,000

100,000

Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)

$ 200,000 ³

$ (800,000)³

[1] During the three-month period ended March 31, 2013

[2] osses on interest rate lock derivatives reclassified from AOCI into income (effective portion) were included in interest expense, net in our condensed consolidated statements of income.

[3] Gains and losses recognized in income for ineffectiveness and amounts excluded from effectiveness testing were included in other, net, in our condensed consolidated statements of income.

Noncontrolling Interests (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Noncontrolling Interest [Line Items]

Income from continuing operations

$ 320.8

$ 280.5

Income from continuing operations attributable to noncontrolling interests

(2.8)

(2.0)

Income from continuing operations attributable to Ensco

$ 318.0

$ 278.5

Earnings Per Share (Reconciliation Of Net Income Attributable To Ensco Shares) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Earnings Per Share [Abstract]

Net income attributable to Ensco

$ 317.1

$ 265.4

Net income allocated to non-vested share awards

(3.3)

(2.7)

Net income attributable to Ensco shares

$ 313.8

$ 262.7

Earnings Per Share (Reconciliation Of Weighted-Average Shares Used In Earnings Per Share Computations) (Details)

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Earnings Per Share [Abstract]

Weighted-average shares - basic (in shares)

230,300,000

228,800,000

Potentially dilutive share options (in shares)

300,000

400,000

Weighted-average shares - diluted (in shares)

230,600,000

229,200,000

Antidilutive share options excluded from computation of diluted earnings per share (in shares)

100,000

400,000

Income Taxes (Narrative) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Income Tax Disclosure [Abstract]

Consolidated effective income tax rate including tax expense attributable to prior periods

13.90%

Unrecognized tax benefits associated with a tax position taken in prior years

$ 4.9

Effective Income Tax Rate, Continuing Operations, Excluding Discrete Items

12.20%

Discontinued Operations (Narrative) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

12 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Dec. 31, 2012

Jackup Rigs [Member]

rigs

Dec. 31, 2012

Moored Semisubmersible Rigs [Member]

rigs

Dec. 31, 2012

Barge Rig [Member]

rigs

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Net proceeds from rig sale

$ 15.5

Loss on disposal of discontinued operations, net

$ 1.1

$ 0

Number of rigs sold

3

1

Discontinued Operations (Summary Of Income From Discontinued Operations) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Discontinued Operations and Disposal Groups [Abstract]

Revenues

$ 0

$ 5.8

Operating expenses

0.1

21.4

Operating loss before income taxes

(0.1)

(15.6)

Other income

0.3

0.5

Income tax benefit

0

2.0

Loss on disposal of discontinued operations, net

(1.1)

0

DISCONTINUED OPERATIONS, NET

$ (0.9)

$ (13.1)

Contingencies (Narrative) (Details) (USD $)

1 Months Ended

3 Months Ended

12 Months Ended

Apr. 30, 2012

Mar. 31, 2013

occurrence

plaintiffs

claim

Mar. 31, 2013

plaintiffs

claim

Dec. 31, 2012

Dec. 31, 2009

Mar. 31, 2009

Oil and Gas Delivery Commitments and Contracts [Line Items]

Distance from original drilling location in miles

95

Leg and debris removal costs

$ 19,000,000

Number of payments related to leg and debris removal costs

9

Payments for Leg and Debris Removal

14,000,000

Proceeds from Insurance Settlement, Investing Activities

13,100,000

Wreckage And Debris Removal

5,000,000

9,000,000

Wreckage And Debris Removal Receivables

5,900,000

13,200,000

Loss Contingency, Pending Claims, Number

3

Civil litigation claim damages for cost of repair and business interruption due to pipeline rupture

26,000,000

Liability insurance self-insured retention per occurrence

10,000,000

Annual liability coverage limit for wreckage and debris removal costs

500,000,000

Liability insurance self-insured retention

15,000,000

Number of Occurrences

2

Liability insurance self insured retention for each occurrence thereafter

1,000,000

Number of plaintiffs

100

Environmental liabilities

2,400,000

Spain [Member]

Oil and Gas Delivery Commitments and Contracts [Line Items]

Aggregate amount of pending administrative proceeding raised by governmental authority

4,000,000

Minimum [Member]

Oil and Gas Delivery Commitments and Contracts [Line Items]

Loss Contingency, Damages Sought, Value

$ 5,000,000

Segment Information (Narrative) (Details)

3 Months Ended

Mar. 31, 2013

contract

segments

Segment Reporting Information, Revenue for Reportable Segment [Abstract]

Number of operating segments (in segments)

3

Number of reportable segments (in segments)

2

Number of drilling management contracts (in contracts)

3

Segment Information (Schedule Of Segment Reporting Information) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Dec. 31, 2012

Segment Reporting Information [Line Items]

Revenues

$ 1,149.9

$ 1,020.6

Operating Expenses [Abstract]

Contract drilling (exclusive of depreciation)

560.8

502.2

Depreciation

149.0

136.0

General and administrative

37.8

38.2

OPERATING INCOME

402.3

344.2

Property and equipment, net

13,155.2

12,889.9

13,145.6

Floaters [Member]

Segment Reporting Information [Line Items]

Revenues

719.2

639.3

Operating Expenses [Abstract]

Contract drilling (exclusive of depreciation)

344.9

312.9

Depreciation

107.1

91.0

General and administrative

0

OPERATING INCOME

267.2

235.4

Property and equipment, net

10,710.0

10,390.4

Jackups [Member]

Segment Reporting Information [Line Items]

Revenues

410.5

359.8

Operating Expenses [Abstract]

Contract drilling (exclusive of depreciation)

200.2

173.6

Depreciation

40.3

41.4

General and administrative

0

OPERATING INCOME

170.0

144.8

Property and equipment, net

2,413.3

2,457.7

Other [Member]

Segment Reporting Information [Line Items]

Revenues

20.2

21.5

Operating Expenses [Abstract]

Contract drilling (exclusive of depreciation)

15.7

Depreciation

0

General and administrative

0

OPERATING INCOME

4.5

5.8

Property and equipment, net

0

12.4

Operating Segments Total [Member]

Segment Reporting Information [Line Items]

Revenues

1,149.9

1,020.6

Operating Expenses [Abstract]

Contract drilling (exclusive of depreciation)

560.8

502.2

Depreciation

147.4

132.4

General and administrative

0

OPERATING INCOME

441.7

386.0

Property and equipment, net

13,123.3

12,860.5

Reconciling Items [Member]

Segment Reporting Information [Line Items]

Revenues

0

Operating Expenses [Abstract]

Contract drilling (exclusive of depreciation)

0

Depreciation

1.6

3.6

General and administrative

37.8

38.2

OPERATING INCOME

(39.4)

(41.8)

Property and equipment, net

$ 31.9

$ 29.4

Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details)

3 Months Ended

Mar. 31, 2013

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

73 ¹

Floaters [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

28

Jackups [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

45

North & South America (Excl. Brazil) [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

22 ¹

North & South America (Excl. Brazil) [Member] |
Floaters [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

8

North & South America (Excl. Brazil) [Member] |
Jackups [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

14

Brazil [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

10 ¹

Brazil [Member] |
Floaters [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

10

Brazil [Member] |
Jackups [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

0

Europe & Mediterranean [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

9 ¹

Europe & Mediterranean [Member] |
Floaters [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

1

Europe & Mediterranean [Member] |
Jackups [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

8

Middle East & Africa [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

13 ¹

Middle East & Africa [Member] |
Floaters [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

4

Middle East & Africa [Member] |
Jackups [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

9

Asia & Pacific Rim [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

13 ¹

Asia & Pacific Rim [Member] |
Floaters [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

2

Asia & Pacific Rim [Member] |
Jackups [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

11

Asia & Pacific Rim (under construction) [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

6 ¹

Asia & Pacific Rim (under construction) [Member] |
Floaters [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

3

Asia & Pacific Rim (under construction) [Member] |
Jackups [Member]

Segment Reporting Information [Line Items]

Number of contract drilling rigs (in rigs)

3

[1] We provide management services on three rigs owned by third-parties not included in the table above.

Supplemental Financial Information Supplemental Financial Information (Narrative) (Details) (Sales Revenue, Services, Net [Member], USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Floaters [Member] |
Product Concentration Risk [Member]

Revenues

$ 200.1

Concentration Risk, Percentage

17.00%

US Gulf Of Mexico [Member] |
Geographic Concentration Risk [Member]

Revenues

401.5

Concentration Risk, Percentage

35.00%

US Gulf Of Mexico [Member] |
Floaters [Member] |
Geographic Concentration Risk [Member]

Concentration Risk, Percentage

75.00%

Brazil [Member] |
Geographic Concentration Risk [Member]

Revenues

$ 243.3

Concentration Risk, Percentage

21.00%

Supplemental Financial Information (Accounts Receivable, Net) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Supplemental Information For Property, Casualty Insurance Underwriters [Line Items]

Accounts receivable

$ 827.0

$ 830.6

Allowance for doubtful accounts

(17.9)

(19.2)

Accounts receivable, net

809.1

811.4

Trade [Member]

Supplemental Information For Property, Casualty Insurance Underwriters [Line Items]

Accounts receivable

814.8

812.4

Other [Member]

Supplemental Information For Property, Casualty Insurance Underwriters [Line Items]

Accounts receivable

$ 12.2

$ 18.2

Supplemental Financial Information (Other Current Assets) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Supplemental Financial Information [Abstract]

Inventory

$ 215.9

$ 207.8

Prepaid taxes

60.9

62.2

Short-term investments

50.0

Deferred mobilization costs

29.6

33.7

Deferred tax assets

21.2

14.6

Prepaid expenses

14.5

20.3

Assets Held-for-sale, Current

0

14.2

Other

21.9

22.6

Other current assets

$ 414.0

$ 425.4

Supplemental Financial Information (Other Assets, Net) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Supplemental Financial Information [Abstract]

Intangible assets

$ 115.0

$ 143.3

Unbilled reimbursable receivables

74.9

77.1

Prepaid taxes on intercompany transfers of property

56.8

58.3

Supplemental executive retirement plan assets

35.2

29.8

Warranty and other claim receivables

30.6

Deferred tax assets

19.0

19.3

Deferred mobilization costs

12.2

20.8

Wreckage and debris removal receivables

5.9

13.2

Other

28.8

29.4

Other Assets, Net

$ 378.4

$ 421.8

Supplemental Financial Information (Accrued Liabilities) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Supplemental Financial Information [Abstract]

Personnel costs

$ 165.6

$ 231.1

Deferred revenue

142.3

146.2

Taxes

93.9

86.9

Accrued interest

36.0

67.9

Wreckage and debris removal

5.0

9.0

Other

46.2

43.3

Accrued liabilities and other

$ 489.0

$ 584.4

Supplemental Financial Information (Other Liabilities) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Supplemental Financial Information [Abstract]

Deferred revenue

$ 215.7

$ 224.5

Unrecognized tax benefits (inclusive of interest and penalties)

132.4

129.6

Intangible liabilities

101.9

118.0

Supplemental executive retirement plan liabilities

38.4

33.3

Personnel costs

28.4

31.6

Other

31.6

36.4

Other liabilities

$ 548.4

$ 573.4

Supplemental Financial Information Supplemental Financial Information (Accumulated Other Comprehensive Income) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Supplemental Financial Information [Abstract]

Derivative Instruments

$ 19.4

$ 24.4

Other

(4.4)

(4.3)

Accumulated other comprehensive income

$ 15.0

$ 20.1

Guarantee Of Registered Securities (Narrative) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Guarantor Obligations [Line Items]

Senior notes aggregate outstanding principal balance

$ 1,700.0

8.50% Senior notes due 2019 [Member]

Guarantor Obligations [Line Items]

Debt instrument interest rate stated percentage

8.50%

Senior note, maturity year

2019

6.875% Senior notes due 2020 [Member]

Guarantor Obligations [Line Items]

Debt instrument interest rate stated percentage

6.875%

Senior note, maturity year

2020

7.875% Senior notes due 2040 [Member]

Guarantor Obligations [Line Items]

Debt instrument interest rate stated percentage

7.875%

Senior note, maturity year

2040

7.20% Debentures Due 2027 [Member]

Guarantor Obligations [Line Items]

Debt instrument interest rate stated percentage

7.20%

Senior note, maturity year

2027

Senior notes aggregate outstanding principal balance

$ 150.0

Guarantee Of Registered Securities (Condensed Consolidating Statements Of Income) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Guarantor Obligations [Line Items]

OPERATING REVENUES

$ 1,149.9

$ 1,020.6

Contract drilling (exclusive of depreciation)

560.8

502.2

Depreciation

149.0

136.0

General and administrative

37.8

38.2

OPERATING INCOME

402.3

344.2

OTHER INCOME (EXPENSE), NET

(29.8)

(26.7)

INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES

372.5

317.5

INCOME TAX PROVISION

51.7

37.0

DISCONTINUED OPERATIONS, NET

(0.9)

(13.1)

EQUITY EARNINGS IN AFFILIATES, NET OF TAX

0

NET INCOME

319.9

267.4

NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

(2.8)

(2.0)

NET INCOME ATTRIBUTABLE TO ENSCO

317.1

265.4

Ensco Plc [Member]

Guarantor Obligations [Line Items]

OPERATING REVENUES

5.5

21.9

Contract drilling (exclusive of depreciation)

12.4

6.9

Depreciation

0.1

General and administrative

16.9

14.6

OPERATING INCOME

(23.9)

0.3

OTHER INCOME (EXPENSE), NET

(14.6)

(11.2)

INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES

(38.5)

(10.9)

INCOME TAX PROVISION

0

DISCONTINUED OPERATIONS, NET

0

EQUITY EARNINGS IN AFFILIATES, NET OF TAX

355.6

276.3

NET INCOME

317.1

265.4

NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

0

NET INCOME ATTRIBUTABLE TO ENSCO

317.1

265.4

ENSCO International Inc. [Member]

Guarantor Obligations [Line Items]

OPERATING REVENUES

38.1

10.6

Contract drilling (exclusive of depreciation)

38.1

10.6

Depreciation

0.8

General and administrative

0.2

0

OPERATING INCOME

(1.0)

(0.8)

OTHER INCOME (EXPENSE), NET

(7.4)

(0.3)

INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES

(8.4)

(1.1)

INCOME TAX PROVISION

29.5

11.2

DISCONTINUED OPERATIONS, NET

0

EQUITY EARNINGS IN AFFILIATES, NET OF TAX

111.7

44.2

NET INCOME

73.8

31.9

NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

0

NET INCOME ATTRIBUTABLE TO ENSCO

73.8

31.9

Pride International, Inc. [Member]

Guarantor Obligations [Line Items]

OPERATING REVENUES

0

Contract drilling (exclusive of depreciation)

0

Depreciation

0

General and administrative

0

OPERATING INCOME

0

OTHER INCOME (EXPENSE), NET

(14.6)

(11.7)

INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES

(14.6)

(11.7)

INCOME TAX PROVISION

0

DISCONTINUED OPERATIONS, NET

0

EQUITY EARNINGS IN AFFILIATES, NET OF TAX

52.4

79.7

NET INCOME

37.8

68.0

NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

0

NET INCOME ATTRIBUTABLE TO ENSCO

37.8

68.0

Other Non-Guarantor Subsidiaries Of Ensco [Member]

Guarantor Obligations [Line Items]

OPERATING REVENUES

1,183.7

1,037.0

Contract drilling (exclusive of depreciation)

587.7

533.6

Depreciation

148.1

135.1

General and administrative

20.7

23.6

OPERATING INCOME

427.2

344.7

OTHER INCOME (EXPENSE), NET

6.8

(3.5)

INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES

434.0

341.2

INCOME TAX PROVISION

22.2

25.8

DISCONTINUED OPERATIONS, NET

(0.9)

(13.1)

EQUITY EARNINGS IN AFFILIATES, NET OF TAX

0

NET INCOME

410.9

302.3

NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

(2.8)

(2.0)

NET INCOME ATTRIBUTABLE TO ENSCO

408.1

300.3

Consolidating Adjustments [Member]

Guarantor Obligations [Line Items]

OPERATING REVENUES

(77.4)

(48.9)

Contract drilling (exclusive of depreciation)

(77.4)

(48.9)

Depreciation

0

General and administrative

0

OPERATING INCOME

0

OTHER INCOME (EXPENSE), NET

0

INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES

0

INCOME TAX PROVISION

0

DISCONTINUED OPERATIONS, NET

0

EQUITY EARNINGS IN AFFILIATES, NET OF TAX

(519.7)

(400.2)

NET INCOME

(519.7)

(400.2)

NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

0

NET INCOME ATTRIBUTABLE TO ENSCO

$ (519.7)

$ (400.2)

Guarantee Of Registered Securities (Condensed Consolidating Statements of Comprehensive Income) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

NET INCOME

$ 319.9

$ 267.4

OTHER COMPREHENSIVE (LOSS) INCOME, NET

Net change in fair value of derivatives

(4.0)

6.3

Reclassification of gains and losses on derivative instruments from other comprehensive (income) into net income

(1.0)

(0.1)

Other

(0.1)

(1.9)

NET OTHER COMPREHENSIVE (LOSS) INCOME

(5.1)

4.3

COMPREHENSIVE INCOME

314.8

271.7

COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

(2.8)

(2.0)

COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO

312.0

269.7

Ensco Plc [Member]

NET INCOME

317.1

265.4

OTHER COMPREHENSIVE (LOSS) INCOME, NET

Net change in fair value of derivatives

0

Reclassification of gains and losses on derivative instruments from other comprehensive (income) into net income

0

Other

0

NET OTHER COMPREHENSIVE (LOSS) INCOME

0

COMPREHENSIVE INCOME

317.1

265.4

COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

0

COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO

317.1

265.4

ENSCO International Inc. [Member]

NET INCOME

73.8

31.9

OTHER COMPREHENSIVE (LOSS) INCOME, NET

Net change in fair value of derivatives

(4.0)

1.9

Reclassification of gains and losses on derivative instruments from other comprehensive (income) into net income

0.1

Other

0

NET OTHER COMPREHENSIVE (LOSS) INCOME

(3.9)

2.0

COMPREHENSIVE INCOME

69.9

33.9

COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

0

COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO

69.9

33.9

Pride International, Inc. [Member]

NET INCOME

37.8

68.0

OTHER COMPREHENSIVE (LOSS) INCOME, NET

Net change in fair value of derivatives

0

Reclassification of gains and losses on derivative instruments from other comprehensive (income) into net income

0

Other

0

NET OTHER COMPREHENSIVE (LOSS) INCOME

0

COMPREHENSIVE INCOME

37.8

68.0

COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

0

COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO

37.8

68.0

Other Non-Guarantor Subsidiaries Of Ensco [Member]

NET INCOME

410.9

302.3

OTHER COMPREHENSIVE (LOSS) INCOME, NET

Net change in fair value of derivatives

0

4.4

Reclassification of gains and losses on derivative instruments from other comprehensive (income) into net income

(1.1)

(0.2)

Other

(0.1)

(1.9)

NET OTHER COMPREHENSIVE (LOSS) INCOME

(1.2)

2.3

COMPREHENSIVE INCOME

409.7

304.6

COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

(2.8)

(2.0)

COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO

406.9

302.6

Consolidating Adjustments [Member]

NET INCOME

(519.7)

(400.2)

OTHER COMPREHENSIVE (LOSS) INCOME, NET

Net change in fair value of derivatives

0

Reclassification of gains and losses on derivative instruments from other comprehensive (income) into net income

0

Other

0

NET OTHER COMPREHENSIVE (LOSS) INCOME

0

COMPREHENSIVE INCOME

(519.7)

(400.2)

COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS

0

COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO

$ (519.7)

$ (400.2)

Guarantee Of Registered Securities (Condensed Consolidating Balance Sheets) (Details) (USD $)

In Millions, unless otherwise specified

Mar. 31, 2013

Dec. 31, 2012

Mar. 31, 2012

Dec. 31, 2011

Guarantor Obligations [Line Items]

Cash and cash equivalents

$ 561.8

$ 487.1

$ 208.9

$ 430.7

Accounts receivable

809.1

811.4

Accounts receivable from affiliates

0

Other

414.0

425.4

Total current assets

1,784.9

1,723.9

PROPERTY AND EQUIPMENT, AT COST

15,893.6

15,737.1

Less accumulated depreciation

2,738.4

2,591.5

Property and equipment, net

13,155.2

13,145.6

12,889.9

GOODWILL

3,274.0

DUE FROM AFFILIATES

0

INVESTMENTS IN AFFILIATES

0

OTHER ASSETS, NET

378.4

421.8

TOTAL ASSETS

18,592.5

18,565.3

Accounts payable and accrued liabilities

797.9

942.2

Accounts payable to affiliates

0

Current maturities of long-term debt

47.5

Total current liabilities

845.4

989.7

DUE TO AFFILIATES

0

LONG-TERM DEBT

4,783.3

4,798.4

DEFERRED INCOME TAXES

346.8

351.7

OTHER LIABILITIES

548.4

573.4

ENSCO SHAREHOLDERS' EQUITY

12,062.1

11,846.4

NONCONTROLLING INTERESTS

6.5

5.7

Total equity

12,068.6

11,852.1

Total liabilities and shareholders' equity

18,592.5

18,565.3

Ensco Plc [Member]

Guarantor Obligations [Line Items]

Cash and cash equivalents

289.1

271.8

12.2

236.6

Accounts receivable

0

Accounts receivable from affiliates

1,296.2

1,294.5

Other

2.9

2.8

Total current assets

1,588.2

1,569.1

PROPERTY AND EQUIPMENT, AT COST

2.1

Less accumulated depreciation

1.2

1.1

Property and equipment, net

0.9

1.0

GOODWILL

0

DUE FROM AFFILIATES

2,677.0

3,483.5

INVESTMENTS IN AFFILIATES

13,831.0

13,469.3

OTHER ASSETS, NET

10.7

11.3

TOTAL ASSETS

18,107.8

18,534.2

Accounts payable and accrued liabilities

4.9

31.0

Accounts payable to affiliates

1,653.7

2,364.8

Current maturities of long-term debt

0

Total current liabilities

1,658.6

2,395.8

DUE TO AFFILIATES

1,910.0

1,816.7

LONG-TERM DEBT

2,470.6

2,469.6

DEFERRED INCOME TAXES

0

OTHER LIABILITIES

0

ENSCO SHAREHOLDERS' EQUITY

12,068.6

11,852.1

NONCONTROLLING INTERESTS

0

Total equity

12,068.6

11,852.1

Total liabilities and shareholders' equity

18,107.8

18,534.2

ENSCO International Inc. [Member]

Guarantor Obligations [Line Items]

Cash and cash equivalents

0

1.7

13.5

0

Accounts receivable

0.3

0.2

Accounts receivable from affiliates

166.4

226.5

Other

24.8

24.9

Total current assets

191.5

253.3

PROPERTY AND EQUIPMENT, AT COST

30.1

30.2

Less accumulated depreciation

23.6

23.5

Property and equipment, net

6.5

6.7

GOODWILL

0

DUE FROM AFFILIATES

3,758.5

3,594.7

INVESTMENTS IN AFFILIATES

2,799.8

2,693.8

OTHER ASSETS, NET

64.8

67.4

TOTAL ASSETS

6,821.1

6,615.9

Accounts payable and accrued liabilities

47.5

28.1

Accounts payable to affiliates

56.5

136.9

Current maturities of long-term debt

0

Total current liabilities

104.0

165.0

DUE TO AFFILIATES

2,260.6

2,054.7

LONG-TERM DEBT

149.1

149.0

DEFERRED INCOME TAXES

325.2

335.1

OTHER LIABILITIES

1.0

0

ENSCO SHAREHOLDERS' EQUITY

3,981.2

3,912.1

NONCONTROLLING INTERESTS

0

Total equity

3,981.2

3,912.1

Total liabilities and shareholders' equity

6,821.1

6,615.9

Pride International, Inc. [Member]

Guarantor Obligations [Line Items]

Cash and cash equivalents

115.0

85.0

29.3

22.6

Accounts receivable

0

Accounts receivable from affiliates

1.4

0

Other

0

Total current assets

116.4

85.0

PROPERTY AND EQUIPMENT, AT COST

0

Less accumulated depreciation

0

Property and equipment, net

0

GOODWILL

0

DUE FROM AFFILIATES

1,640.4

1,628.4

INVESTMENTS IN AFFILIATES

3,836.2

3,824.8

OTHER ASSETS, NET

0

TOTAL ASSETS

5,593.0

5,538.2

Accounts payable and accrued liabilities

23.4

34.1

Accounts payable to affiliates

0

Current maturities of long-term debt

0

Total current liabilities

23.4

34.1

DUE TO AFFILIATES

954.6

877.5

LONG-TERM DEBT

2,032.7

2,040.8

DEFERRED INCOME TAXES

0

OTHER LIABILITIES

10.5

10.8

ENSCO SHAREHOLDERS' EQUITY

2,571.8

2,575.0

NONCONTROLLING INTERESTS

0

Total equity

2,571.8

2,575.0

Total liabilities and shareholders' equity

5,593.0

5,538.2

Other Non-Guarantor Subsidiaries Of Ensco [Member]

Guarantor Obligations [Line Items]

Cash and cash equivalents

157.7

128.6

153.9

171.5

Accounts receivable

808.8

811.2

Accounts receivable from affiliates

1,577.1

2,375.1

Other

386.3

397.7

Total current assets

2,929.9

3,712.6

PROPERTY AND EQUIPMENT, AT COST

15,861.4

15,704.8

Less accumulated depreciation

2,713.6

2,566.9

Property and equipment, net

13,147.8

13,137.9

GOODWILL

3,274.0

DUE FROM AFFILIATES

5,125.2

4,748.9

INVESTMENTS IN AFFILIATES

0

OTHER ASSETS, NET

302.9

343.1

TOTAL ASSETS

24,779.8

25,216.5

Accounts payable and accrued liabilities

722.1

849.0

Accounts payable to affiliates

1,330.9

1,394.4

Current maturities of long-term debt

47.5

Total current liabilities

2,100.5

2,290.9

DUE TO AFFILIATES

8,075.9

8,706.6

LONG-TERM DEBT

130.9

139.0

DEFERRED INCOME TAXES

21.6

16.6

OTHER LIABILITIES

536.9

562.6

ENSCO SHAREHOLDERS' EQUITY

13,907.5

13,495.1

NONCONTROLLING INTERESTS

6.5

5.7

Total equity

13,914.0

13,500.8

Total liabilities and shareholders' equity

24,779.8

25,216.5

Consolidating Adjustments [Member]

Guarantor Obligations [Line Items]

Cash and cash equivalents

0

Accounts receivable

0

Accounts receivable from affiliates

(3,041.1)

(3,896.1)

Other

0

Total current assets

(3,041.1)

(3,896.1)

PROPERTY AND EQUIPMENT, AT COST

0

Less accumulated depreciation

0

Property and equipment, net

0

GOODWILL

0

DUE FROM AFFILIATES

(13,201.1)

(13,455.5)

INVESTMENTS IN AFFILIATES

(20,467.0)

(19,987.9)

OTHER ASSETS, NET

0

TOTAL ASSETS

(36,709.2)

(37,339.5)

Accounts payable and accrued liabilities

0

Accounts payable to affiliates

(3,041.1)

(3,896.1)

Current maturities of long-term debt

0

Total current liabilities

(3,041.1)

(3,896.1)

DUE TO AFFILIATES

(13,201.1)

(13,455.5)

LONG-TERM DEBT

0

DEFERRED INCOME TAXES

0

OTHER LIABILITIES

0

ENSCO SHAREHOLDERS' EQUITY

(20,467.0)

(19,987.9)

NONCONTROLLING INTERESTS

0

Total equity

(20,467.0)

(19,987.9)

Total liabilities and shareholders' equity

$ (36,709.2)

$ (37,339.5)

Guarantee Of Registered Securities (Condensed Consolidating Statements Of Cash Flows) (Details) (USD $)

In Millions, unless otherwise specified

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

OPERATING ACTIVITIES

Net cash (used in) provided by operating activities of continuing operations

$ 342.1

$ 555.6

INVESTING ACTIVITIES

Additions to property and equipment

(168.3)

(764.1)

Other

0.9

5.1

Net cash used in investing activities of continuing operations

(167.4)

(759.0)

FINANCING ACTIVITIES

Cash dividends paid

(116.5)

(86.8)

Commercial paper borrowings, net

0

75.0

Proceeds from exercise of share options

13.4

11.9

Reduction of long-term borrowings

(7.1)

Advances (to) from affiliates

0

Other

(5.5)

(3.6)

Net cash used in financing activities of continuing operations

(115.7)

(10.6)

DISCONTINUED OPERATIONS

Operating activities

0.2

(8.3)

Investing activities

15.5

0

Net cash provided by (used in) discontinued operations

15.7

(8.3)

Effect of exchange rate changes on cash and cash equivalents

0

0.5

INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS

74.7

(221.8)

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD

487.1

430.7

CASH AND CASH EQUIVALENTS, END OF PERIOD

561.8

208.9

Ensco Plc [Member]

OPERATING ACTIVITIES

Net cash (used in) provided by operating activities of continuing operations

(55.3)

(20.3)

INVESTING ACTIVITIES

Additions to property and equipment

0

Other

0

Net cash used in investing activities of continuing operations

0

FINANCING ACTIVITIES

Cash dividends paid

(116.5)

(86.8)

Commercial paper borrowings, net

75.0

Proceeds from exercise of share options

13.4

Reduction of long-term borrowings

0

Advances (to) from affiliates

179.4

(192.3)

Other

(3.7)

0

Net cash used in financing activities of continuing operations

72.6

(204.1)

DISCONTINUED OPERATIONS

Operating activities

0

Investing activities

0

Net cash provided by (used in) discontinued operations

0

Effect of exchange rate changes on cash and cash equivalents

0

INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS

17.3

(224.4)

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD

271.8

236.6

CASH AND CASH EQUIVALENTS, END OF PERIOD

289.1

12.2

ENSCO International Inc. [Member]

OPERATING ACTIVITIES

Net cash (used in) provided by operating activities of continuing operations

(34.0)

(21.8)

INVESTING ACTIVITIES

Additions to property and equipment

0

Other

0.1

0.7

Net cash used in investing activities of continuing operations

0.1

0.7

FINANCING ACTIVITIES

Cash dividends paid

0

Commercial paper borrowings, net

0

Proceeds from exercise of share options

0

11.9

Reduction of long-term borrowings

0

Advances (to) from affiliates

32.2

22.8

Other

0

(0.1)

Net cash used in financing activities of continuing operations

32.2

34.6

DISCONTINUED OPERATIONS

Operating activities

0

Investing activities

0

Net cash provided by (used in) discontinued operations

0

Effect of exchange rate changes on cash and cash equivalents

0

INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS

(1.7)

13.5

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD

1.7

0

CASH AND CASH EQUIVALENTS, END OF PERIOD

0

13.5

Pride International, Inc. [Member]

OPERATING ACTIVITIES

Net cash (used in) provided by operating activities of continuing operations

11.3

(67.4)

INVESTING ACTIVITIES

Additions to property and equipment

0

Other

0

Net cash used in investing activities of continuing operations

0

FINANCING ACTIVITIES

Cash dividends paid

0

Commercial paper borrowings, net

0

Proceeds from exercise of share options

0

Reduction of long-term borrowings

0

Advances (to) from affiliates

18.7

74.1

Other

0

Net cash used in financing activities of continuing operations

18.7

74.1

DISCONTINUED OPERATIONS

Operating activities

0

Investing activities

0

Net cash provided by (used in) discontinued operations

0

Effect of exchange rate changes on cash and cash equivalents

0

INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS

30.0

6.7

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD

85.0

22.6

CASH AND CASH EQUIVALENTS, END OF PERIOD

115.0

29.3

Other Non-Guarantor Subsidiaries Of Ensco [Member]

OPERATING ACTIVITIES

Net cash (used in) provided by operating activities of continuing operations

420.1

665.1

INVESTING ACTIVITIES

Additions to property and equipment

(168.3)

(764.1)

Other

0.8

4.4

Net cash used in investing activities of continuing operations

(167.5)

(759.7)

FINANCING ACTIVITIES

Cash dividends paid

0

Commercial paper borrowings, net

0

Proceeds from exercise of share options

0

Reduction of long-term borrowings

(7.1)

Advances (to) from affiliates

(230.3)

95.4

Other

(1.8)

(3.5)

Net cash used in financing activities of continuing operations

(239.2)

84.8

DISCONTINUED OPERATIONS

Operating activities

0.2

(8.3)

Investing activities

15.5

Net cash provided by (used in) discontinued operations

15.7

(8.3)

Effect of exchange rate changes on cash and cash equivalents

0

0.5

INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS

29.1

(17.6)

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD

128.6

171.5

CASH AND CASH EQUIVALENTS, END OF PERIOD

157.7

153.9

Consolidating Adjustments [Member]

OPERATING ACTIVITIES

Net cash (used in) provided by operating activities of continuing operations

0

INVESTING ACTIVITIES

Additions to property and equipment

0

Other

0

Net cash used in investing activities of continuing operations

0

FINANCING ACTIVITIES

Cash dividends paid

0

Commercial paper borrowings, net

0

Proceeds from exercise of share options

0

Reduction of long-term borrowings

0

Advances (to) from affiliates

0

Other

0

Net cash used in financing activities of continuing operations

0

DISCONTINUED OPERATIONS

Operating activities

0

Investing activities

0

Net cash provided by (used in) discontinued operations

0

Effect of exchange rate changes on cash and cash equivalents

0

INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS

0

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD

0

CASH AND CASH EQUIVALENTS, END OF PERIOD

$ 0