10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

     Washington, D.C. 20549     

FORM 10-Q

(Mark One)
x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2016

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from  to

Commission File Number 1-8097

Ensco plc

(Exact name of registrant as specified in its charter)

England and Wales (State or other jurisdiction of incorporation or organization) 6 Chesterfield Gardens London, England (Address of principal executive offices) 98-0635229 (I.R.S. Employer Identification No.) W1J 5BQ (Zip Code)

 Registrant's telephone number, including area code:  44 (0) 20 7659 4660

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes x  No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  Yes x        No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	o
Non-Accelerated filer	o  (Do not check if a smaller reporting company)	Smaller reporting company	o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  o      No  x

As of July 22, 2016, there were 301,337,497 Class A ordinary shares of the registrant issued and outstanding.

ENSCO PLC

INDEX TO FORM 10-Q

FOR THE QUARTER ENDED JUNE 30, 2016

PART I      FINANCIAL INFORMATION
ITEM 1.   FINANCIAL STATEMENTS
Report of Independent Registered Public Accounting Firm	3
Condensed Consolidated Statements of Operations Three Months Ended June 30, 2016 and 2015	4
Condensed Consolidated Statements of Operations Six Months Ended June 30, 2016 and 2015	5
Condensed Consolidated Statements of Comprehensive Income Three Months Ended June 30, 2016 and 2015	6
Condensed Consolidated Statements of Comprehensive Income Six Months Ended June 30, 2016 and 2015	7
Condensed Consolidated Balance Sheets June 30, 2016 and December 31, 2015	8
Condensed Consolidated Statements of Cash Flows Six Months Ended June 30, 2016 and 2015	9
Notes to Condensed Consolidated Financial Statements	10
ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	41
ITEM 3.   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	56
ITEM 4.   CONTROLS AND PROCEDURES	56
PART II     OTHER INFORMATION
ITEM 1.   LEGAL PROCEEDINGS	57
ITEM 1A. RISK FACTORS	60
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	61
ITEM 6.  EXHIBITS	62
SIGNATURES	63

FORWARD-LOOKING STATEMENTS

Statements contained in this report that are not historical facts are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act").  Forward-looking statements include words or phrases such as "anticipate," "believe," "estimate," "expect," "intend," "plan," "project," "could," "may," "might," "should," "will" and similar words and specifically include statements regarding expected financial performance; dividends; expected utilization, day rates, revenues, operating expenses, contract terms, contract backlog, capital expenditures, insurance, financing and funding; the timing of availability, delivery, mobilization, contract commencement or relocation or other movement of rigs and the timing thereof; future rig construction (including construction in progress and completion thereof), enhancement, upgrade or repair and timing and cost thereof; the suitability of rigs for future contracts; the offshore drilling market, including supply and demand, customer drilling programs, stacking of rigs, effects of new rigs on the market and effects of declines in commodity prices; general market, business and industry conditions, trends and outlook; future operations; the impact of increasing regulatory complexity; expected contributions from our rig fleet expansion program and our program to high-grade the rig fleet by investing in new equipment and divesting selected assets and underutilized rigs; expense management; and the likely outcome of litigation, legal proceedings, investigations or insurance or other claims or contract disputes and the timing thereof.

Such statements are subject to numerous risks, uncertainties and assumptions that may cause actual results to vary materially from those indicated, including:

• downtime and other risks associated with offshore rig operations, including rig or equipment failure, damage and other unplanned repairs, the limited availability of transport vessels, hazards, self-imposed drilling limitations and other delays due to severe storms and hurricanes and the limited availability or high cost of insurance coverage for certain offshore perils, such as hurricanes in the Gulf of Mexico or associated removal of wreckage or debris;

• changes in worldwide rig supply and demand, competition or technology, including as a result of delivery of newbuild drilling rigs;

• changes in future levels of drilling activity and expenditures by our customers, whether as a result of global capital markets and liquidity, prices of oil and natural gas or otherwise, which may cause us to idle or stack additional rigs;

• governmental action, terrorism, piracy, military action and political and economic uncertainties, including uncertainty or instability resulting from civil unrest, political demonstrations, mass strikes, or an escalation or additional outbreak of armed hostilities or other crises in oil or natural gas producing areas of the Middle East, North Africa, West Africa or other geographic areas, which may result in expropriation, nationalization, confiscation or deprivation of our assets or suspension and/or termination of contracts based on force majeure events;

• risks inherent to shipyard rig construction, repair, modification or upgrades, including risks associated with concentration of our construction contracts with three shipyards, unexpected delays in equipment delivery, engineering, design or commissioning issues following delivery, or changes in the commencement, completion or service dates;

• possible cancellation, suspension, renegotiation or termination (with or without cause) of drilling contracts as a result of general and industry-specific economic conditions, mechanical difficulties, performance or other reasons;

1

• our ability to enter into, and the terms of, future drilling contracts, including contracts for our newbuild units, for rigs currently idled and for rigs whose contracts are expiring;

• the outcome of litigation, legal proceedings, investigations or other claims or contract disputes, including any inability to collect receivables or resolve significant contractual or day rate disputes, any renegotiation, nullification, cancellation or breach of contracts with customers or other parties and any failure to execute definitive contracts following announcements of letters of intent;

• governmental regulatory, legislative and permitting requirements affecting drilling operations, including limitations on drilling locations (such as the Gulf of Mexico during hurricane season);

• new and future regulatory, legislative or permitting requirements, future lease sales, changes in laws, rules and regulations that have or may impose increased financial responsibility, additional oil spill abatement contingency plan capability requirements and other governmental actions that may result in claims of force majeure or otherwise adversely affect our existing drilling contracts, operations or financial results;

• our ability to attract and retain skilled personnel on commercially reasonable terms, whether due to labor regulations, unionization or otherwise;

• environmental or other liabilities, risks, damages or losses, whether related to storms or hurricanes (including wreckage or debris removal), collisions, groundings, blowouts, fires, explosions, other accidents, terrorism or otherwise, for which insurance coverage and contractual indemnities may be insufficient, unenforceable or otherwise unavailable;

• our ability to obtain financing and pursue other business opportunities may be limited by our debt levels, debt agreement restrictions and the credit ratings assigned to our debt by independent credit rating agencies;

• tax matters, including our effective tax rates, tax positions, results of audits, changes in tax laws, treaties and regulations, tax assessments and liabilities for taxes;

• delays in contract commencement dates or the cancellation of drilling programs by operators;

• adverse changes in foreign currency exchange rates, including their effect on the fair value measurement of our derivative instruments; and

• potential long-lived asset impairments.

In addition to the numerous risks, uncertainties and assumptions described above, you should also carefully read and consider "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" in Part I and "Item 1A. Risk Factors" in Part II of this report and "Item 1A. Risk Factors" in Part I and "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in Part II of our annual report on Form 10-K for the year ended December 31, 2015, which is available on the U.S. Securities and Exchange Commission website at www.sec.gov. Each forward-looking statement speaks only as of the date of the particular statement, and we undertake no obligation to publicly update or revise any forward looking statements, except as required by law.

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PART I - FINANCIAL INFORMATION

Item 1.Financial Statements

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Shareholders

Ensco plc:

We have reviewed the condensed consolidated balance sheet of Ensco plc and subsidiaries (the Company) as of June 30, 2016, the related condensed consolidated statements of operations and comprehensive income for the three-month and six-month periods ended June 30, 2016 and 2015, and the related condensed consolidated statements of cash flows for the six-month periods ended June 30, 2016 and 2015. These condensed consolidated financial statements are the responsibility of the Company’s management.

We conducted our review in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should be made to the condensed consolidated financial statements referred to above for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet of Ensco plc and subsidiaries as of December 31, 2015 and the related consolidated statements of operations, comprehensive (loss) income, and cash flows for the year then ended (not presented herein); and in our report dated February 24, 2016, we expressed an unqualified opinion on those consolidated financial statements. In our opinion, the information set forth in the accompanying condensed consolidated balance sheet as of December 31, 2015, is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.

/s/ KPMG LLP

Houston, Texas

July 28, 2016

3

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In millions, except per share amounts)

(Unaudited)

	Three Months Ended June 30,
	2016			2015
OPERATING REVENUES	$	909.6		$	1,059.0
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	350.2			502.6
Depreciation	112.4			140.5
General and administrative	27.4			29.7
	490.0			672.8
OPERATING INCOME	419.6			386.2
OTHER INCOME (EXPENSE)
Interest income	2.5			3.4
Interest expense, net	(54.0		)	(51.2		)
Other, net	261.4			(7.6		)
	209.9			(55.4		)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	629.5			330.8
PROVISION FOR INCOME TAXES
Current income tax expense	48.6			43.9
Deferred income tax (benefit) expense	(11.9		)	14.1
	36.7			58.0
INCOME FROM CONTINUING OPERATIONS	592.8			272.8
LOSS FROM DISCONTINUED OPERATIONS, NET	(.2		)	(10.1		)
NET INCOME	592.6			262.7
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(2.0		)	(2.4		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	590.6		$	260.3
EARNINGS (LOSS) PER SHARE - BASIC AND DILUTED
Continuing operations	$	2.04		$	1.15
Discontinued operations	—			(0.04		)
	$	2.04		$	1.11
NET INCOME ATTRIBUTABLE TO ENSCO SHARES - BASIC AND DILUTED	$	580.8		$	256.7
WEIGHTED-AVERAGE SHARES OUTSTANDING
Basic	284.6			232.1
Diluted	284.6			232.2
CASH DIVIDENDS PER SHARE	$	0.01		$	0.15

The accompanying notes are an integral part of these condensed consolidated financial statements.

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ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In millions, except per share amounts)

(Unaudited)

	Six Months Ended June 30,
	2016			2015
OPERATING REVENUES	$	1,723.6		$	2,222.9
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	713.9			1,020.9
Depreciation	225.7			277.6
General and administrative	50.8			59.8
	990.4			1,358.3
OPERATING INCOME	733.2			864.6
OTHER INCOME (EXPENSE)
Interest income	4.8			5.8
Interest expense, net	(119.1		)	(103.6		)
Other, net	259.6			(30.2		)
	145.3			(128.0		)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	878.5			736.6
PROVISION FOR INCOME TAXES
Current income tax expense	86.7			106.6
Deferred income tax expense	21.4			29.1
	108.1			135.7
INCOME FROM CONTINUING OPERATIONS	770.4			600.9
LOSS FROM DISCONTINUED OPERATIONS, NET	(1.1		)	(10.3		)
NET INCOME	769.3			590.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(3.4		)	(5.6		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	765.9		$	585.0
EARNINGS (LOSS) PER SHARE - BASIC AND DILUTED
Continuing operations	$	2.92		$	2.53
Discontinued operations	—			(0.04		)
	$	2.92		$	2.49
NET INCOME ATTRIBUTABLE TO ENSCO SHARES - BASIC AND DILUTED	$	753.9		$	577.7
WEIGHTED-AVERAGE SHARES OUTSTANDING
Basic	258.5			232.0
Diluted	258.5			232.1
CASH DIVIDENDS PER SHARE	$	0.02		$	0.30

The accompanying notes are an integral part of these condensed consolidated financial statements.

5

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In millions)

(Unaudited)

	Three Months Ended June 30,
	2016			2015
NET INCOME	$	592.6		$	262.7
OTHER COMPREHENSIVE (LOSS) INCOME, NET
Net change in derivative fair value	(4.1		)	8.7
Reclassification of net losses on derivative instruments from other comprehensive income into net income	2.0			5.1
Other	.1			(1.3		)
NET OTHER COMPREHENSIVE (LOSS) INCOME	(2.0		)	12.5
COMPREHENSIVE INCOME	590.6			275.2
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(2.0		)	(2.4		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	588.6		$	272.8

The accompanying notes are an integral part of these condensed consolidated financial statements.

6

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In millions)

(Unaudited)

	Six Months Ended June 30,
	2016			2015
NET INCOME	$	769.3		$	590.6
OTHER COMPREHENSIVE INCOME, NET
Net change in derivative fair value	(.6		)	(8.7		)
Reclassification of net losses on derivative instruments from other comprehensive income into net income	7.9			10.1
Other	—			1.3
NET OTHER COMPREHENSIVE INCOME	7.3			2.7
COMPREHENSIVE INCOME	776.6			593.3
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(3.4		)	(5.6		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	773.2		$	587.7

The accompanying notes are an integral part of these condensed consolidated financial statements.

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ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(In millions, except share and par value amounts)

	June 30, 2016			December 31, 2015
	(Unaudited)
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	790.3		$	121.3
Short-term investments	1,010.0			1,180.0
Accounts receivable, net	408.0			582.0
Other	346.4			401.8
Total current assets	2,554.7			2,285.1
PROPERTY AND EQUIPMENT, AT COST	12,877.2			12,719.4
Less accumulated depreciation	1,856.0			1,631.6
Property and equipment, net	11,021.2			11,087.8
OTHER ASSETS, NET	189.1			237.6
	$	13,765.0		$	13,610.5
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable - trade	$	152.3		$	224.6
Accrued liabilities and other	458.5			550.9
Total current liabilities	610.8			775.5
LONG-TERM DEBT	4,905.6			5,868.6
OTHER LIABILITIES	361.7			449.2
COMMITMENTS AND CONTINGENCIES
ENSCO SHAREHOLDERS' EQUITY
Class A ordinary shares, U.S. $.10 par value, 450.0 million shares authorized, 308.5 million and 242.9 million shares issued as of June 30, 2016 and December 31, 2015	30.9			24.3
Class B ordinary shares, £1 par value, 50,000 shares authorized and issued as of June 30, 2016 and December 31, 2015	.1			.1
Additional paid-in capital	6,148.9			5,554.5
Retained earnings	1,746.0			985.3
Accumulated other comprehensive income	19.8			12.5
Treasury shares, at cost, 7.1 million and 7.6 million shares as of June 30, 2016 and December 31, 2015	(65.8		)	(63.8		)
Total Ensco shareholders' equity	7,879.9			6,512.9
NONCONTROLLING INTERESTS	7.0			4.3
Total equity	7,886.9			6,517.2
	$	13,765.0		$	13,610.5

     The accompanying notes are an integral part of these condensed consolidated financial statements.

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ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In millions)

(Unaudited)

	Six Months Ended June 30,
	2016			2015
OPERATING ACTIVITIES
Net income	$	769.3		$	590.6
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations:
(Gain) loss on debt extinguishment	(260.8		)	33.5
Depreciation expense	225.7			277.6
Deferred income tax expense	21.4			29.1
Share-based compensation expense	18.6			23.0
Amortization of intangibles and other, net	(11.2		)	(13.0		)
Loss from discontinued operations, net	1.1			10.3
Other	(5.5		)	(9.9		)
Changes in operating assets and liabilities	41.6			(50.2		)
Net cash provided by operating activities of continuing operations	800.2			891.0
INVESTING ACTIVITIES
Maturities of short-term investments	1,032.0			757.3
Purchases of short-term investments	(862.0		)	(650.0		)
Additions to property and equipment	(209.4		)	(913.9		)
Other	7.6			1.1
Net cash used in investing activities of continuing operations	(31.8		)	(805.5		)
FINANCING ACTIVITIES
Reduction of long-term borrowings	(684.8		)	(1,058.0		)
Proceeds from equity issuance	585.5			—
Cash dividends paid	(5.5		)	(70.5		)
Proceeds from issuance of senior notes	—			1,078.7
Premium paid on redemption of debt	—			(30.3		)
Debt financing costs	—			(10.5		)
Other	(1.9		)	(6.8		)
Net cash used in financing activities	(106.7		)	(97.4		)
DISCONTINUED OPERATIONS
Operating activities	1.4			(4.2		)
Investing activities	6.3			(0.6		)
Net cash provided by (used in) discontinued operations	7.7			(4.8		)
Effect of exchange rate changes on cash and cash equivalents	(.4		)	.2
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	669.0			(16.5		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	121.3			664.8
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	790.3		$	648.3

The accompanying notes are an integral part of these condensed consolidated financial statements.

9

ENSCO PLC AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1 -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, 2015 condensed consolidated balance sheet data were derived from our 2015 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 us 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 and six-month periods ended June 30, 2016 and 2015 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, and the independent registered public accounting firm's liability under Section 11 does not extend to it.

Results of operations for the three-month and six-month periods ended June 30, 2016 are not necessarily indicative of the results of operations that will be realized for the year ending December 31, 2016.  We recommend these condensed consolidated financial statements be read in conjunction with our annual report on Form 10-K for the year ended December 31, 2015 filed with the SEC on February 24, 2016 and our quarterly report on Form 10-Q filed with the SEC on April 28, 2016.

Operating Revenues and Expenses

During the three-month and six-month periods ended June 30, 2016, operating revenues included $185.0 million for the lump-sum consideration received in settlement and release of the ENSCO DS-9 customer's ongoing early termination obligations and $20.0 million for the lump-sum consideration received in settlement of the ENSCO 8503 customer's remaining obligations under the contract. The ENSCO DS-9 contract was terminated for convenience by the customer in July 2015, whereby our customer was obligated to pay us monthly termination fees for two years under the termination provisions of the contract. The ENSCO 8503 contract was originally scheduled to expire in August 2017.

New Accounting Pronouncements

In March 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-09, Compensation — Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("Update 2016-09"), which simplifies several aspects of accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This update is effective for annual and interim periods beginning after December 15, 2016, with early adoption permitted. Transition methods vary for the related amendments. We are currently evaluating the effect that Update 2016-09 will have on our condensed consolidated financial statements and related disclosures.

10

In February 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-02, Leases (Topic 842): Amendments to the FASB Accounting Standards Codification ("Update 2016-02"), which requires an entity to recognize lease assets and lease liabilities on the balance sheet and to disclose key qualitative and quantitative information about the entity's leasing arrangements. This update is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted. A modified retrospective approach is required. We are currently evaluating the effect that Update 2016-02 will have on our condensed consolidated financial statements and related disclosures.

During 2015, the Financial Accounting Standards Board issued Accounting Standards Update 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs ("Update 2015-03"), as updated by Update 2015-15, Interest - Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements - Amendments to SEC Paragraphs Pursuant to Staff Announcements at June 18, 2015 EITF Meeting ("Update 2015-15"), which require that debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the carrying amount of the related debt liability, consistent with debt discounts. Debt issuance costs related to line-of-credit arrangements may be presented as an asset regardless of whether there are any outstanding borrowings on the arrangement. We adopted Update 2015-03 and Update 2015-15 on a retrospective basis effective January 1, 2016. Accordingly, all debt issuance costs, except for the balance related to our line-of-credit arrangement, were presented as a deduction from the carrying amount of the related debt liability on our condensed consolidated balance sheet for all periods presented. As a result of retrospective application, we reclassified debt issuance costs of $26.5 million on our condensed consolidated balance sheet as of December 31, 2015. There is no impact to the manner in which debt issuance costs are amortized in our consolidated financial statements.

During 2014, the Financial Accounting Standards Board issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606) ("Update 2014-09"), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. During 2015, the Financial Accounting Standards Board voted to delay the effective date one year. Update 2014-09 is now effective for annual and interim periods for fiscal years beginning after December 15, 2017, though companies have an option of adopting the standard for fiscal years beginning after December 15, 2016. During 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations ("Update 2016-08"), Accounting Standards Update 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing ("Update 2016-10") and Account Standards Update 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients ("Update 2016-12"). The amendments in Update 2016-08, 2016-10 and 2016-12 do not change the core principle of Update 2014-09 but instead clarify the implementation guidance on principle versus agent considerations, identify performance obligations and the licensing implementation guidance, and provide narrow-scope improvements, respectively. Update 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP and may be adopted using a retrospective, modified retrospective or prospective with a cumulative catch-up approach. We are currently evaluating the effect that Update 2014-09 will have on our condensed consolidated financial statements and related disclosures.

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Note 2 -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 June 30, 2016
Supplemental executive retirement plan assets	$	33.3	$	—		$	—	$	33.3
Total financial assets	$	33.3	$	—		$	—	$	33.3
Derivatives, net	$	—	$	(8.5	)	$	—	$	(8.5	)
Total financial liabilities	$	—	$	(8.5	)	$	—	$	(8.5	)
As of December 31, 2015
Supplemental executive retirement plan assets	$	33.1	$	—		$	—	$	33.1
Total financial assets	$	33.1	$	—		$	—	$	33.1
Derivatives, net	—		(19.7		)	—		(19.7		)
Total financial liabilities	$	—	$	(19.7	)	$	—	$	(19.7	)

Supplemental Executive Retirement Plan Assets

Our supplemental executive retirement plans (the "SERP") are non-qualified plans that provide 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. 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 are generally observable for similar assets or liabilities at commonly-quoted intervals.

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Other Financial Instruments

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

	June 30, 2016				December 31, 2015
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
8.50% Senior notes due 2019	$	506.5	$	467.0	$	566.4	$	510.2
6.875% Senior notes due 2020	829.1		747.6		990.9		850.5
4.70% Senior notes due 2021	767.1		653.4		1,476.7		1,254.0
4.50% Senior notes due 2024	618.3		427.0		619.7		417.4
5.20% Senior notes due 2025	662.4		465.2		692.5		505.2
7.20% Debentures due 2027	149.1		115.9		149.1		133.5
7.875% Senior notes due 2040	379.1		210.0		379.8		244.0
5.75% Senior notes due 2044	994.0		620.9		993.5		707.1
Total	$	4,905.6	$	3,707.0	$	5,868.6	$	4,621.9

The estimated fair values of our senior notes and debentures were determined using quoted market prices. The decline in the carrying value of long-term debt instruments from December 31, 2015 to June 30, 2016 is due to debt repurchases as discussed in "Note 6 - Debt." 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 June 30, 2016 and December 31, 2015. Our short-term investments consisted of time deposits with initial maturities in excess of three months but less than one year as of each respective balance sheet date.

Note 3 -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 certain of our subsidiaries are denominated in currencies other than the U.S. dollar. 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 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 derivative fair value depends on the use of the derivative and whether it qualifies for hedge accounting.  Net liabilities of $8.5 million and $19.7 million associated with our foreign currency forward contracts were included on our condensed consolidated balance sheets as of June 30, 2016 and December 31, 2015, 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.

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

	Derivative Assets				Derivative Liabilities
	June 30, 2016		December 31, 2015		June 30, 2016		December 31, 2015
Derivatives Designated as Hedging Instruments
Foreign currency forward contracts - current(1)	$	5.0	$	.6	$	12.7	$	20.7
Foreign currency forward contracts - non-current(2)	1.0		.2		1.1		1.5
	6.0		.8		13.8		22.2
Derivatives Not Designated as Hedging Instruments
Foreign currency forward contracts - current(1)	1.5		2.6		2.2		.9
	1.5		2.6		2.2		.9
Total	$	7.5	$	3.4	$	16.0	$	23.1

⁽¹⁾  Derivative assets and liabilities with 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 with 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 and capital expenditures denominated in various currencies. As of June 30, 2016, we had cash flow hedges outstanding to exchange an aggregate $230.3 million for various foreign currencies, including $107.6 million for British pounds, $43.6 million for Australian dollars, $33.8 million for Euros, $28.3 million for Brazilian reais and $17.0 million for other currencies.

Gains and losses, net of tax, on derivatives designated as cash flow hedges included in our condensed consolidated statements of operations and comprehensive income were as follows (in millions):

Three Months Ended June 30, 2016 and 2015

	(Loss) Gain Recognized in Other Comprehensive Income (Effective Portion)					Loss Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)(1)						Gain Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)(2)
	2016			2015		2016			2015			2016		2015
Interest rate lock contracts(3)	$	—		$	—	$	—		$	(.4	)	$	—	$	—
Foreign currency forward contracts(4)	(4.1		)	8.7		(2.0		)	(4.7		)	.8		.3
Total	$	(4.1	)	$	8.7	$	(2.0	)	$	(5.1	)	$	.8	$	.3

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Six Months Ended June 30, 2016 and 2015

	Loss Recognized in Other Comprehensive Income (Effective Portion)						Loss Reclassified from AOCI into Income (Effective Portion)(1)						Gain Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)(2)
	2016			2015			2016			2015			2016		2015
Interest rate lock contracts(3)	$	—		$	—		$	(.1	)	$	(.5	)	$	—	$	—
Foreign currency forward contracts(5)	(.6		)	(8.7		)	(7.8		)	(9.6		)	1.9		.2
Total	$	(.6	)	$	(8.7	)	$	(7.9	)	$	(10.1	)	$	1.9	$	.2

⁽¹⁾ Changes in the effective portion of cash flow hedge fair values 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 operations.

⁽³⁾ Losses on interest rate lock derivatives reclassified from AOCI into income were included in interest expense, net, in our condensed consolidated statements of operations.

⁽⁴⁾  During the three-month period ended June 30, 2016, $2.2 million of losses were reclassified from AOCI into contract drilling expense and $200,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations. During the three-month period ended June 30, 2015, $4.9 million of losses were reclassified from AOCI into contract drilling expense and $200,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations.

⁽⁵⁾  During the six-month period ended June 30, 2016, $8.2 million of losses were reclassified from AOCI into contract drilling expense and $400,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations. During the six-month period ended June 30, 2015, $10.0 million of losses were reclassified from AOCI into contract drilling expense and $400,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations.

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 June 30, 2016, we held derivatives not designated as hedging instruments to exchange an aggregate $145.2 million for various foreign currencies, including $78.2 million for euros, $16.9 million for British pounds, $16.0 million for Swiss francs, $12.5 million for Indonesian rupiah, $9.9 million for Brazilian reais and $11.7 million for other currencies.

Net losses of $3.5 million and net gains of $4.5 million associated with our derivatives not designated as hedging instruments were included in other, net, in our condensed consolidated statements of operations for the three-month periods ended June 30, 2016 and 2015, respectively. Net gains of $900,000 and net losses of $9.0 million associated with our derivatives not designated as hedging instruments were included in other, net, in our condensed consolidated statements of operations for the six-month periods ended June 30, 2016 and 2015, respectively. These gains and losses were largely offset by net foreign currency exchange gains and losses during the respective periods.

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As of June 30, 2016, the estimated amount of net losses associated with derivative instruments, net of tax, that would be reclassified into earnings during the next twelve months totaled $4.6 million.

Note 4 - 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 in our condensed consolidated statements of operations.

Income from continuing operations attributable to Ensco for the three-month and six-month periods ended June 30, 2016 and 2015 was as follows (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Income from continuing operations	$	592.8		$	272.8		$	770.4		$	600.9
Income from continuing operations attributable to noncontrolling interests	(2.0		)	(2.4		)	(3.4		)	(5.6		)
Income from continuing operations attributable to Ensco	$	590.8		$	270.4		$	767.0		$	595.3

Note 5 - 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 income from continuing operations attributable to Ensco shares used in our basic and diluted EPS computations for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Income from continuing operations attributable to Ensco	$	590.8		$	270.4		$	767.0		$	595.3
Income from continuing operations allocated to non-vested share awards	(9.8		)	(3.7		)	(12.0		)	(7.4		)
Income from continuing operations attributable to Ensco shares	$	581.0		$	266.7		$	755.0		$	587.9

The following table is a reconciliation of the weighted-average shares used in our basic and diluted EPS computations for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,		Six Months Ended June 30,
	2016	2015	2016	2015
Weighted-average shares - basic	284.6	232.1	258.5	232.0
Potentially dilutive shares	—	.1	—	.1
Weighted-average shares - diluted	284.6	232.2	258.5	232.1

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Antidilutive share awards totaling 500,000 and 600,000 were excluded from the computation of diluted EPS for the three-month and six-month periods ended June 30, 2016. Antidilutive share awards totaling 500,000 were excluded from the computation of diluted EPS for the three-month and six-month ended June 30, 2015.

Note 6 -Debt

Tender Offers and Open Market Repurchases

In March 2016, we launched cash tender offers (the "Tender Offers") to repurchase up to $750.0 million aggregate purchase price of our outstanding debt. The Tender Offers expired on April 1, 2016. We received tenders totaling $860.7 million for an aggregate purchase price of $622.3 million. In April, we used cash on-hand to settle the tendered debt. In addition, during the second quarter, we repurchased $79.5 million of our 4.70% Senior Notes due 2021 for $62.5 million on the open market. Our Tender Offers and open market repurchases during the quarter were as follows (in millions):

	Aggregate Principal Amount Purchased		Aggregate Purchase Price(1)		Discount %
8.50% Senior Notes due 2019	$	45.7	$	38.3	16.2	%
6.875% Senior Notes due 2020	140.1		103.7		26.0	%
4.70% Senior Notes due 2021	722.0		525.1		27.3	%
4.50% Senior Notes due 2024	1.7		0.9		47.1	%
5.20% Senior Notes due 2025	30.7		16.8		45.3	%
Total	$	940.2	$	684.8	27.2	%

⁽¹⁾  Excludes accrued interest paid to holders who tendered in connection with the Tender Offers.

During the second quarter, we recognized a pre-tax gain from debt extinguishment of $260.8 million included in other, net, in our consolidated statements of operations, related to the Tender Offers and open market repurchases, net of discounts, premiums, debt issuance costs and transaction costs.

After giving effect to the Tender Offers and open market repurchases, our next debt maturity is $454.3 million during 2019, followed by $759.9 million, $778.0 million, $623.2 million and $669.3 million during 2020, 2021, 2024 and 2025, respectively.

Revolving Credit

We have a $2.25 billion senior unsecured revolving credit facility with a syndicate of banks to be used for general corporate purposes with a term expiring on September 30, 2019 (the "Credit Facility"). Advances under the Credit Facility bear interest at Base Rate or LIBOR plus an applicable margin rate, depending on our credit ratings. We are required to pay a quarterly commitment fee on the undrawn portion of the $2.25 billion commitment, which is also based on our credit rating.

In February, Moody’s announced a downgrade of our credit rating to B1, which is below investment grade. Following the downgrade, the applicable margin rates are 0.50% per annum for Base Rate advances and 1.50% per annum for LIBOR advances. Our quarterly commitment fee is 0.225% per annum on the undrawn portion of the $2.25 billion commitment. 

In July, Standard & Poor's downgraded our credit rating one notch to BBB-, which maintains our investment grade rating with the rating agency. As previous rating actions resulted in the highest applicable margin rate and commitment fees under our Credit Facility, the July downgrade does not impact our applicable margin rate on

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borrowings or our quarterly commitment fee. We have limited or no access to the commercial paper market as a result of our current credit ratings.

Our access to credit and capital markets depends on the credit ratings assigned to our debt. There can be no assurance that we will be able to maintain our credit ratings, and any additional actual or anticipated downgrades in our credit ratings, including any announcement that our ratings are under review for a downgrade, could limit our available options when accessing credit and capital markets, or when restructuring or refinancing our debt. In addition, future financings or refinancings may result in higher borrowing costs and require more restrictive terms and covenants.

The Credit Facility requires us to maintain a total debt to total capitalization ratio that is less than or equal to 60%. The Credit Facility also contains customary restrictive covenants, including, among others, prohibitions on creating, incurring or assuming certain debt and liens; entering into certain merger arrangements; selling, leasing, transferring or otherwise disposing of all or substantially all of our assets; making a material change in the nature of the business; and entering into certain transactions with affiliates. We have the right, subject to receipt of commitments from new or existing lenders, to increase the commitments under the Credit Facility to an aggregate amount of up to $2.75 billion and to extend the term of the Credit Facility by one year on up to two occasions.

As of June 30, 2016, we were in compliance in all material respects with our covenants under the Credit Facility. We had no amounts outstanding under the Credit Facility as of June 30, 2016 and December 31, 2015.

Note 7 -Shareholders' Equity

We filed an automatically effective shelf registration statement on Form S-3 with the U.S. Securities and Exchange Commission on January 15, 2015, which provides us the ability to issue debt securities, equity securities, guarantees and/or units of securities in one or more offerings. The registration statement, as amended, expires in January 2018.

On April 20, 2016, we closed an underwritten public offering of 65,550,000 Class A ordinary shares at $9.25 per share, inclusive of shares purchased under an underwriters' option. We received net proceeds from the offering of $585.5 million. The offering resulted in an increase in Class A ordinary shares and Additional Paid in Capital on our condensed consolidated balance sheet of $6.6 million and $578.9 million, respectively.

Note 8 -Benefit Plans

During the quarter ended June 30, 2016, we granted 3.4 million non-vested share units to our employees pursuant to our 2012 Long-Term Incentive Plan, which will be settled in cash upon vesting. Grants of our non-vested share units generally vest at rates of 20% or 33% per year, as determined by a committee or subcommittee of the Board of Directors at the time of grant. The non-vested share units have dividend rights effective on the date of grant. Compensation expense for awards to be settled in cash is remeasured each quarter with a cumulative adjustment to compensation cost during the period based on changes in our share price. The weighted-average grant date fair value for our non-vested share units to be settled in cash that were granted during the quarter ended June 30, 2016 was $9.65.

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Note 9 -Discontinued Operations

The following table summarizes loss from discontinued operations, net, for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Revenues	$	—		$	8.1		$	—		$	17.7
Operating expenses	1.6			11.3			2.4			33.2
Operating loss	(1.6		)	(3.2		)	(2.4		)	(15.5		)
Income tax benefit (expense)	0.4			(2.9		)	0.3			9.2
Loss on impairment, net	—			(7.2		)	—			(7.2		)
Gain on disposal of discontinued operations, net	1.0			3.2			1.0			3.2
Loss from discontinued operations, net	$	(.2	)	$	(10.1	)	$	(1.1	)	$	(10.3	)

During the second quarter of 2016, we sold ENSCO DS-2, ENSCO 6000 and ENSCO 58 for scrap value resulting in a net pre-tax gain on sale of $1.2 million included in loss from discontinued operations, net, on our condensed consolidated statements of operations.

ENSCO 7500 and ENSCO 90 remain classified as held-for-sale on our June 30, 2016 condensed consolidated balance sheet and are included in discontinued operations.

For the three-month and six-month periods ended June 30, 2015, loss from discontinued operations, net, included the operating results of ENSCO 93 and ENSCO 58, stacking costs for uncontracted rigs included in discontinued operations, a pre-tax impairment of $7.2 million on ENSCO 6000 and a pre-tax gain of $1.6 million on the sale of ENSCO 5002. A discrete tax benefit of $13.3 million was included in loss from discontinued operations, net, in the first quarter of 2015.

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

Note 10 -Income Taxes

Our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2016 was 5.8% and 12.3%, respectively. Excluding the impact of discrete tax items, our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2016 was 19.9% and 24.3%, respectively. Discrete tax items for the three-month period ended June 30, 2016 resulted primarily from the gain on debt extinguishment, income from the ENSCO DS-9 lump-sum consideration and restructuring transactions involving certain of our subsidiaries.

Our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2015 was 17.5% and 18.4%, respectively. There were no material discrete tax items for the three-month period ended June 30, 2015. Excluding the impact of discrete income tax items for the six-month period ended June 30, 2015, our consolidated effective income tax rate was 17.5%. These discrete tax items were primarily attributable to the recognition of liabilities for unrecognized tax benefits associated with tax positions taken in prior years.

The increase in our consolidated effective tax rate, excluding discrete items, for the three-month and six-month periods ended June 30, 2016 is primarily attributable to an increase in the relative components of our estimated 2016 earnings, excluding discrete items, generated in tax jurisdictions with higher tax rates, partially offset by the impact of restructuring transactions involving certain of our subsidiaries.

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Note 11 -Contingencies

Brazil Internal Investigation

Pride International, Inc. (“Pride”), a company we acquired in 2011, commenced drilling operations in Brazil in 2001. In 2008, Pride entered into a drilling services agreement with Petrobras (the "DSA") for ENSCO DS-5, a drillship ordered from Samsung Heavy Industries, a shipyard in South Korea ("SHI"). Beginning in 2006, Pride conducted periodic compliance reviews of its business with Petrobras, and, after the acquisition of Pride, Ensco conducted similar compliance reviews, the most recent of which commenced in early 2015 after media reports were released regarding ongoing investigations of various kickback and bribery schemes in Brazil involving Petrobras.

While conducting our compliance review, we became aware of an internal audit report by Petrobras alleging irregularities in relation to the DSA. Upon learning of the Petrobras internal audit report, our Audit Committee appointed independent counsel to lead an investigation into the alleged irregularities. Further, in June and July 2015, we voluntarily contacted the SEC and the DOJ, respectively, to advise them of this matter and our Audit Committee’s investigation. Independent counsel, under the direction of our Audit Committee, has substantially completed its investigation by reviewing and analyzing available documents and correspondence and interviewing current and former employees involved in the DSA negotiations and the negotiation of the ENSCO DS-5 construction contract with SHI (the "DS-5 Construction Contract").

To date, our Audit Committee has found no evidence that Pride or Ensco or any of their current or former employees were aware of or involved in any wrongdoing, and our Audit Committee has found no evidence linking Ensco or Pride to any illegal acts committed by our former marketing consultant, who provided services to Pride and Ensco in connection with the DSA. Independent counsel has continued to provide the SEC and DOJ with updates throughout the investigation, including detailed briefings regarding its investigation and findings. On December 21, 2015, we entered into a one-year tolling agreement with the DOJ. On March 7, 2016, we entered into a one-year tolling agreement with the SEC.

Subsequent to initiating our Audit Committee investigation, Brazilian court documents connected to the prosecution of former Petrobras directors and employees as well as certain other third parties, including our former marketing consultant, referenced the alleged irregularities cited in the Petrobras internal audit report. Our former marketing consultant has entered into a plea agreement with the Brazilian authorities. On January 10, 2016, Brazilian authorities filed an indictment against a former Petrobras director. This indictment states that the former Petrobras director received bribes paid out of proceeds from a brokerage agreement entered into for purposes of intermediating a drillship construction contract between SHI and Pride, which we believe to be the DS-5 Construction Contract. The parties to the brokerage agreement were a company affiliated with a person acting on behalf of the former Petrobras director, a company affiliated with our former marketing consultant, and SHI. The indictment alleges that amounts paid by SHI under the brokerage agreement ultimately were used to pay bribes to the former Petrobras director. The indictment does not state that Pride or Ensco or any of their current or former employees were involved in the bribery scheme or had any knowledge of the bribery scheme.    

On January 4, 2016, we received a notice from Petrobras declaring the DSA void effective immediately. Petrobras’ notice alleges that our former marketing consultant both received and procured improper payments from SHI for employees of Petrobras and that Pride had knowledge of this activity and assisted in the procurement of and/or facilitated these improper payments. We disagree with Petrobras’ allegations. See "—DSA Dispute" below for additional information.

Outside of Petrobras’ allegations, we have not been contacted by any Brazil governmental authority regarding alleged wrongdoing by Pride or Ensco or any of their current or former employees related to this matter. We cannot predict whether any U.S., Brazilian or other governmental authority will seek to investigate Pride's involvement in this matter, or if a proceeding were opened, the scope or ultimate outcome of any such investigation. If the SEC or DOJ determines that violations of the FCPA have occurred, or if any governmental authority determines that we have violated applicable anti-bribery laws, they could seek civil and criminal sanctions, including monetary penalties, against us, as well as changes to our business practices and compliance programs, any of which could have a material adverse

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effect on our business and financial condition. Although our internal investigation is substantially complete, we cannot predict whether any additional allegations will be made or whether any additional facts relevant to the investigation will be uncovered during the course of the investigation and what impact those allegations and additional facts will have on the timing or conclusions of the investigation. Our Audit Committee will examine any such additional allegations and additional facts and the circumstances surrounding them.

DSA Dispute

As described above, on January 4, 2016, Petrobras sent a notice to us declaring the DSA void effective immediately, reserving its rights and stating its intention to seek any restitution to which it may be entitled. We disagree with Petrobras’ declaration that the DSA is void. We believe that Petrobras has repudiated the DSA and have therefore accepted the DSA as terminated on April 8, 2016 (the "Termination Date"). At this time, we cannot reasonably determine the validity of Petrobras' claim or the range of our potential exposure, if any. As a result, there can be no assurance as to how this dispute will ultimately be resolved.

We did not recognize revenue for amounts owed to us under the DSA from the beginning of the fourth quarter of 2015 through the Termination Date, as we concluded that collectability of these amounts was not reasonably assured. Additionally, our receivables from Petrobras related to the DSA from prior to the fourth quarter of 2015 are fully reserved on our condensed consolidated balance sheet as of June 30, 2016. We have initiated arbitration proceedings in the U.K. against Petrobras seeking payment of all amounts owed to us under the DSA, in addition to any other amounts to which we are entitled, and intend to vigorously pursue our claims. Petrobras subsequently filed a counterclaim seeking restitution of certain sums paid under the DSA less value received by Petrobras under the DSA. We have also initiated separate arbitration proceedings in the U.K. against SHI for any losses we have incurred in connection with the foregoing. There can be no assurance as to how these arbitration proceedings will ultimately be resolved.

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 46 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.

During 2013, we reached an agreement in principle with 58 plaintiffs to settle lawsuits filed in Mississippi for a nominal amount. A special master reviewed all 58 cases and made an allocation of settlement funds among the parties.  The District Court Judge reviewed the allocations and accepted the special master’s recommendations and approved the settlements.  The settlement documents for most of the individual plaintiffs have been processed, and the cases dismissed. The settlement documents for approximately 13 individual plaintiffs continue to be processed.

We intend to vigorously defend against the remaining 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 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.

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   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.

In the ordinary course of business with customers and others, we have entered into letters of credit and surety bonds to guarantee our performance as it relates to our drilling contracts, contract bidding, customs duties, tax appeals and other obligations in various jurisdictions. Letters of credit and surety bonds outstanding as of June 30, 2016 totaled $72.3 million and were issued under facilities provided by various banks and other financial institutions. Obligations under these letters of credit and surety bonds are not normally called as we typically comply with the underlying performance requirement. As of June 30, 2016, we were not required to make collateral deposits with respect to these agreements.

Note 12 -Segment Information

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

Segment information for the three-month and six-month periods ended 2016 and 2015 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 are included in "Reconciling Items." We measure segment assets as property and equipment.

Three Months Ended June 30, 2016

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	636.4	$	251.3	$	21.9	$	909.6	$	—		$	909.6
Operating expenses
Contract drilling (exclusive of depreciation)	208.6		122.3		19.3		350.2		—			350.2
Depreciation	77.8		30.1		—		107.9		4.5			112.4
General and administrative	—		—		—		—		27.4			27.4
Operating income	$	350.0	$	98.9	$	2.6	$	451.5	$	(31.9	)	$	419.6
Property and equipment, net	$	8,414.1	$	2,543.0	$	—	$	10,957.1	$	64.1		$	11,021.2

22

Three Months Ended June 30, 2015

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	634.3	$	384.1	$	40.6	$	1,059.0	$	—		$	1,059.0
Operating expenses
Contract drilling (exclusive of depreciation)	277.7		192.7		32.2		502.6		—			502.6
Depreciation	94.4		43.6		—		138.0		2.5			140.5
General and administrative	—		—		—		—		29.7			29.7
Operating income	$	262.2	$	147.8	$	8.4	$	418.4	$	(32.2	)	$	386.2
Property and equipment, net	$	9,870.7	$	3,223.4	$	—	$	13,094.1	$	75.8		$	13,169.9

Six Months Ended June 30, 2016

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	1,149.0	$	529.2	$	45.4	$	1,723.6	$	—		$	1,723.6
Operating expenses
Contract drilling (exclusive of depreciation)	419.9		256.8		37.2		713.9		—			713.9
Depreciation	158.1		58.7		—		216.8		8.9			225.7
General and administrative	—		—		—		—		50.8			50.8
Operating income	$	571.0	$	213.7	$	8.2	$	792.9	$	(59.7	)	$	733.2
Property and equipment, net	$	8,414.1	$	2,543.0	$	—	$	10,957.1	$	64.1		$	11,021.2

Six Months Ended June 30, 2015

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	1,329.3	$	812.4	$	81.2	$	2,222.9	$	—		$	2,222.9
Operating expenses
Contract drilling (exclusive of depreciation)	571.2		384.2		65.5		1,020.9		—			1,020.9
Depreciation	187.4		85.1		—		272.5		5.1			277.6
General and administrative	—		—		—		—		59.8			59.8
Operating income	$	570.7	$	343.1	$	15.7	$	929.5	$	(64.9	)	$	864.6
Property and equipment, net	$	9,870.7	$	3,223.4	$	—	$	13,094.1	$	75.8		$	13,169.9

23

Information about Geographic Areas

As of June 30, 2016, the geographic distribution of our drilling rigs by reportable segment was as follows:

	Floaters	Jackups	Total(1)
North & South America	9	7	16
Europe & Mediterranean	4	11	15
Middle East & Africa	2	11	13
Asia & Pacific Rim	4	7	11
Asia & Pacific Rim (under construction)	1	1	2
Middle East & Africa (under construction)	—	2	2
Held-for-sale	1	1	2
Total	21	40	61

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

Note 13 -Supplemental Financial Information

Consolidated Balance Sheet Information

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

	June 30, 2016			December 31, 2015
Trade	$	415.8		$	595.0
Other	16.7			16.3
	432.5			611.3
Allowance for doubtful accounts	(24.5		)	(29.3		)
	$	408.0		$	582.0

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

	June 30, 2016		December 31, 2015
Inventory	$	231.4	$	235.3
Prepaid taxes	50.0		73.5
Deferred costs	40.2		52.1
Prepaid expenses	8.0		20.5
Assets held-for-sale	1.8		5.5
Other	15.0		14.9
	$	346.4	$	401.8

24

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

	June 30, 2016		December 31, 2015
Deferred tax assets	$	69.8	$	94.8
Deferred costs	42.6		55.8
Prepaid taxes on intercompany transfers of property	33.8		37.1
Supplemental executive retirement plan assets	33.3		33.1
Other	9.6		16.8
	$	189.1	$	237.6

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

	June 30, 2016		December 31, 2015
Deferred revenue	$	172.9	$	197.2
Personnel costs	104.2		161.6
Taxes	79.6		70.8
Accrued interest	74.3		88.4
Derivative liabilities	14.9		21.6
Other	12.6		11.3
	$	458.5	$	550.9

Other liabilities consisted of the following (in millions):

	June 30, 2016		December 31, 2015
Unrecognized tax benefits (inclusive of interest and penalties)	$	153.4	$	149.7
Deferred revenue	143.5		218.6
Supplemental executive retirement plan liabilities	34.5		34.4
Personnel costs	11.4		17.7
Deferred tax liabilities	8.7		4.4
Other	10.2		24.4
	$	361.7	$	449.2

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

	June 30, 2016			December 31, 2015
Currency translation adjustment	$	7.6		$	7.8
Derivative instruments	13.9			6.6
Other	(1.7		)	(1.9		)
	$	19.8		$	12.5

Concentration of Risk

We are exposed to credit risk relating to our receivables from customers, our cash and cash equivalents, our short-term 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 generally have been within management's expectations.

25

We mitigate our credit risk relating to cash and cash equivalents by focusing on diversification and quality of instruments. Cash equivalents consist of a portfolio of high-grade instruments. Custody of cash and cash equivalents 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 derivative counterparties through a variety of techniques, including transacting with multiple, high-quality financial institutions, thereby limiting our exposure to individual counterparties and by entering into International Swaps and Derivatives Association, Inc. (“ISDA”) Master Agreements, which include provisions for a legally enforceable master netting agreement, with our derivative counterparties. The terms of the ISDA agreements may also include credit support requirements, cross default provisions, termination events or set-off provisions.  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.  See "Note 3 - Derivative Instruments" for additional information on our derivatives.

Consolidated revenues by customer for the three-month and six-month periods ended June 30, 2016 and 2015 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
ConocoPhillips(1)	23	%	3	%	15	%	3	%
Total(2)	13	%	10	%	14	%	9	%
BP (3)	10	%	16	%	12	%	14	%
Petrobras(2)	9	%	15	%	12	%	13	%
Other	45	%	56	%	47	%	61	%
	100	%	100	%	100	%	100	%

⁽¹⁾  During the three-month and six-month periods ended June 30, 2016, excluding the impact of the lump-sum termination payment of $185.0 million for ENSCO DS-9, revenues from ConocoPhillips represented 3% and 4%, respectively, of our consolidated revenues.

⁽²⁾  During the three-month and six-month periods ended June 30, 2016 and 2015, all revenues were attributable to our Floater segment.

⁽³⁾  During the three-month periods ended June 30, 2016 and 2015, 75% and 79% of the revenues provided by BP, respectively, were attributable to our Floaters segment. During the six-month periods ended June 30, 2016 and 2015, 76% and 82% of the revenues provided by BP, respectively, were attributable to our Floaters segment.

26

Consolidated revenues by region for the three-month and six-month periods ended June 30, 2016 and 2015 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
U.S. Gulf of Mexico(1)	$	304.5	$	271.0	$	464.7	$	609.8
Angola(2)	132.4		182.4		268.6		351.7
Brazil(3)	81.7		115.7		202.7		238.4
United Kingdom(4)	69.7		104.3		143.5		224.9
Other	321.3		385.6		644.1		798.1
	$	909.6	$	1,059.0	$	1,723.6	$	2,222.9

⁽¹⁾  During the three-month periods ended June 30, 2016 and 2015, 92% and 83% of the revenues earned in the U.S. Gulf of Mexico, respectively, were attributable to our Floaters segment. During the six-month period ended June 30, 2016 and 2015, 89% and 84% of the revenues earned in the U.S. Gulf of Mexico, respectively, were attributable to our Floaters segment. Revenue recognized during the three-month and six-month periods ended June 30, 2016 related to the U.S. Gulf of Mexico included termination fees totaling $205.0 million as discussed in "Note 1 - Unaudited Condensed Consolidated Financial Statements." ENSCO DS-9 termination revenues were attributed to the U.S. Gulf of Mexico as the related drilling contract was intended for operations in that region.

⁽²⁾  During the three-month periods ended June 30, 2016 and 2015, 88% and 91% of the revenues earned in Angola, respectively, were attributable to our Floaters segment. During the six-month period ended June 30, 2016 and 2015, 87% and 90% of the revenues earned in Angola, respectively, were attributable to our Floaters segment.

⁽³⁾  During the three-month and six-month periods ended June 30, 2016 and 2015, all revenues were attributable to our Floaters segment.

⁽⁴⁾  During the three-month and six-month periods ended June 30, 2016 and 2015, all revenues were attributable to our Jackups segment.

27

Note 14 -Guarantee of Registered Securities

Ensco plc provides for the full and unconditional guarantee of Pride International, Inc.'s, a wholly-owned subsidiary of Ensco plc, 8.5% 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 of $1.5 billion as of June 30, 2016. The Ensco plc guarantee provides for the unconditional and irrevocable guarantee of the prompt payment, when due, of any amount owed to the note holders.

Ensco plc is also a full and unconditional guarantor of the 7.2% debentures due 2027 issued by ENSCO International Incorporated, a wholly-owned subsidiary of Ensco plc, during 1997, which had an aggregate outstanding principal balance of $150.0 million as of June 30, 2016.

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 operations for the three-month and six-month periods ended June 30, 2016 and 2015; the unaudited condensed consolidating statements of comprehensive income for the three-month and six-month periods ended June 30, 2016 and 2015; the condensed consolidating balance sheets as of June 30, 2016 (unaudited) and December 31, 2015; and the unaudited condensed consolidating statements of cash flows for the six-month periods ended June 30, 2016 and 2015, in accordance with Rule 3-10 of Regulation S-X.

28

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Three Months Ended June 30, 2016 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	7.6		$	36.5		$	—		$	937.4		$	(71.9	)	$	909.6
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	6.7			36.4			—			379.0			(71.9		)	350.2
Depreciation	—			4.4			—			108.0			—			112.4
General and administrative	10.5			—			—			16.9			—			27.4
OPERATING (LOSS) INCOME	(9.6		)	(4.3		)	—			433.5			—			419.6
OTHER INCOME (EXPENSE), NET	175.8			(8.3		)	(18.8		)	1.3			59.9			209.9
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	166.2			(12.6		)	(18.8		)	434.8			59.9			629.5
INCOME TAX PROVISION	—			(15.6		)	—			52.3			—			36.7
DISCONTINUED OPERATIONS, NET	—			—			—			(.2		)	—			(.2		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	424.4			20.0			10.2			—			(454.6		)	—
NET INCOME (LOSS)	590.6			23.0			(8.6		)	382.3			(394.7		)	592.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.0		)	—			(2.0		)
NET INCOME (LOSS)ATTRIBUTABLE TO ENSCO	$	590.6		$	23.0		$	(8.6	)	$	380.3		$	(394.7	)	$	590.6

29

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Three Months Ended June 30, 2015 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	8.7		$	34.5		$	—		$	1,086.6		$	(70.8	)	$	1,059.0
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	6.3			34.5			—			532.6			(70.8		)	502.6
Depreciation	—			2.4			—			138.1			—			140.5
General and administrative	13.7			—			—			16.0			—			29.7
OPERATING (LOSS) INCOME	(11.3		)	(2.4		)	—			399.9			—			386.2
OTHER (EXPENSE) INCOME, NET	(36.3		)	2.4			(15.2		)	(6.3		)	—			(55.4		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(47.6		)	—			(15.2		)	393.6			—			330.8
INCOME TAX PROVISION	—			14.1			—			43.9			—			58.0
DISCONTINUED OPERATIONS, NET	—			—			—			(10.1		)	—			(10.1		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	307.9			47.5			71.4			—			(426.8		)	—
NET INCOME	260.3			33.4			56.2			339.6			(426.8		)	262.7
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.4		)	—			(2.4		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	260.3		$	33.4		$	56.2		$	337.2		$	(426.8	)	$	260.3

30

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Six Months Ended June 30, 2016 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	14.8		$	72.1		$	—		$	1,780.7		$	(144.0	)	$	1,723.6
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	13.9			72.1			—			771.9			(144.0		)	713.9
Depreciation	—			8.7			—			217.0			—			225.7
General and administrative	16.7			.1			—			34.0			—			50.8
OPERATING (LOSS) INCOME	(15.8		)	(8.8		)	—			757.8			—			733.2
OTHER INCOME (EXPENSE), NET	139.0			(6.7		)	(37.9		)	(9.0		)	59.9			145.3
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	123.2			(15.5		)	(37.9		)	748.8			59.9			878.5
INCOME TAX PROVISION	—			15.4			—			92.7			—			108.1
DISCONTINUED OPERATIONS, NET	—			—			—			(1.1		)	—			(1.1		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	642.7			53.5			63.8			—			(760.0		)	—
NET INCOME	765.9			22.6			25.9			655.0			(700.1		)	769.3
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(3.4		)	—			(3.4		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	765.9		$	22.6		$	25.9		$	651.6		$	(700.1	)	$	765.9

31

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Six Months Ended June 30, 2015 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	17.4		$	69.3		$	—		$	2,278.2		$	(142.0	)	$	2,222.9
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	13.1			69.3			—			1,080.5			(142.0		)	1,020.9
Depreciation	.1			4.9			—			272.6			—			277.6
General and administrative	27.0			.1			—			32.7			—			59.8
OPERATING (LOSS) INCOME	(22.8		)	(5.0		)	—			892.4			—			864.6
OTHER (EXPENSE) INCOME, NET	(96.2		)	(14.4		)	(31.1		)	13.7			—			(128.0		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(119.0		)	(19.4		)	(31.1		)	906.1			—			736.6
INCOME TAX PROVISION	—			27.9			—			107.8			—			135.7
DISCONTINUED OPERATIONS, NET	—			—			—			(10.3		)	—			(10.3		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	704.0			92.7			135.3			—			(932.0		)	—
NET INCOME	585.0			45.4			104.2			788.0			(932.0		)	590.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(5.6		)	—			(5.6		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	585.0		$	45.4		$	104.2		$	782.4		$	(932.0	)	$	585.0

32

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Three Months Ended June 30, 2016

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME (LOSS)	$	590.6	$	23.0		$	(8.6	)	$	382.3		$	(394.7	)	$	592.6
OTHER COMPREHENSIVE INCOME (LOSS), NET
Net change in derivative fair value	—		(4.1		)	—			—			—			(4.1		)
Reclassification of net losses on derivative instruments from other comprehensive income into net income	—		2.0			—			—			—			2.0
Other	—		—			—			.1			—			.1
NET OTHER COMPREHENSIVE (LOSS) INCOME	—		(2.1		)	—			.1			—			(2.0		)
COMPREHENSIVE INCOME (LOSS)	590.6		20.9			(8.6		)	382.4			(394.7		)	590.6
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—			(2.0		)	—			(2.0		)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO ENSCO	$	590.6	$	20.9		$	(8.6	)	$	380.4		$	(394.7	)	$	588.6

33

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Three Months Ended June 30, 2015

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	260.3	$	33.4	$	56.2	$	339.6		$	(426.8	)	$	262.7
OTHER COMPREHENSIVE INCOME (LOSS), NET
Net change in derivative fair value	—		8.7		—		—			—			8.7
Reclassification of net gains on derivative instruments from other comprehensive income into net income	—		5.1		—		—			—			5.1
Other	—		—		—		(1.3		)	—			(1.3		)
NET OTHER COMPREHENSIVE INCOME (LOSS)	—		13.8		—		(1.3		)	—			12.5
COMPREHENSIVE INCOME	260.3		47.2		56.2		338.3			(426.8		)	275.2
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—		—		(2.4		)	—			(2.4		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	260.3	$	47.2	$	56.2	$	335.9		$	(426.8	)	$	272.8

34

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Six Months Ended June 30, 2016

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	765.9	$	22.6		$	25.9	$	655.0		$	(700.1	)	$	769.3
OTHER COMPREHENSIVE INCOME, NET
Net change in derivative fair value	—		(.6		)	—		—			—			(.6		)
Reclassification of net losses on derivative instruments from other comprehensive income into net income	—		7.9			—		—			—			7.9
Other	—		—			—		—			—			—
NET OTHER COMPREHENSIVE INCOME	—		7.3			—		—			—			7.3
COMPREHENSIVE INCOME	765.9		29.9			25.9		655.0			(700.1		)	776.6
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—		(3.4		)	—			(3.4		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	765.9	$	29.9		$	25.9	$	651.6		$	(700.1	)	$	773.2

35

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Six Months Ended June 30, 2015

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	585.0	$	45.4		$	104.2	$	788.0		$	(932.0	)	$	590.6
OTHER COMPREHENSIVE INCOME, NET
Net change in derivative fair value	—		(8.7		)	—		—			—			(8.7		)
Reclassification of net gains on derivative instruments from other comprehensive income into net income	—		10.1			—		—			—			10.1
Other	—		—			—		1.3			—			1.3
NET OTHER COMPREHENSIVE INCOME	—		1.4			—		1.3			—			2.7
COMPREHENSIVE INCOME	585.0		46.8			104.2		789.3			(932.0		)	593.3
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—		(5.6		)	—			(5.6		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	585.0	$	46.8		$	104.2	$	783.7		$	(932.0	)	$	587.7

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ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS June 30, 2016 (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	$	712.8	$	—	$	26.1		$	51.4	$	—		$	790.3
Short-term investments	1,010.0		—		—			—		—			1,010.0
Accounts receivable, net	5.2		—		—			402.8		—			408.0
Accounts receivable from affiliates	245.7		637.7		—			565.8		(1,449.2		)	—
Other	.1		10.1		—			336.2		—			346.4
Total current assets	1,973.8		647.8		26.1			1,356.2		(1,449.2		)	2,554.7
PROPERTY AND EQUIPMENT, AT COST	1.8		118.8		—			12,756.6		—			12,877.2
Less accumulated depreciation	1.8		55.7		—			1,798.5		—			1,856.0
Property and equipment, net	—		63.1		—			10,958.1		—			11,021.2
DUE FROM AFFILIATES	1,428.5		5,069.7		2,043.1			6,731.5		(15,272.8		)	—
INVESTMENTS IN AFFILIATES	8,412.1		1,717.2		—			—		(10,129.3		)	—
OTHER ASSETS, NET	—		40.0		—			290.5		(141.4		)	189.1
	$	11,814.4	$	7,537.8	$	2,069.2		$	19,336.3	$	(26,992.7	)	$	13,765.0
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	48.0	$	32.1	$	30.9		$	499.8	$	—		$	610.8
Accounts payable to affiliates	46.4		591.2		3.8			807.8		(1,449.2		)	$	—
Total current liabilities	94.4		623.3		34.7			1,307.6		(1,449.2		)	610.8
DUE TO AFFILIATES	791.1		5,391.6		2,056.0			7,034.1		(15,272.8		)	—
LONG-TERM DEBT	3,041.8		149.1		1,714.7			—		—			4,905.6
INVESTMENTS IN AFFILIATES	—		—		1,215.2					(1,215.2		)	—
OTHER LIABILITIES	—		150.2		—			352.9		(141.4		)	361.7
ENSCO SHAREHOLDERS' EQUITY	7,887.1		1,223.6		(2,951.4		)	10,634.7		(8,914.1		)	7,879.9
NONCONTROLLING INTERESTS	—		—		—			7.0		—			7.0
Total equity	7,887.1		1,223.6		(2,951.4		)	10,641.7		(8,914.1		)	7,886.9
	$	11,814.4	$	7,537.8	$	2,069.2		$	19,336.3	$	(26,992.7	)	$	13,765.0

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ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 (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	$	94.0	$	—	$	2.0		$	25.3	$	—		$	121.3
Short-term investments	1,180.0		—		—			—		—			$	1,180.0
Accounts receivable, net	1.2		—		—			580.8		—			582.0
Accounts receivable from affiliates	808.7		237.3		—			148.1		(1,194.1		)	—
Other	.2		229.3		—			172.3		—			401.8
Total current assets	2,084.1		466.6		2.0			926.5		(1,194.1		)	2,285.1
PROPERTY AND EQUIPMENT, AT COST	1.8		117.5		—			12,600.1		—			12,719.4
Less accumulated depreciation	1.8		47.7		—			1,582.1		—			1,631.6
Property and equipment, net	—		69.8		—			11,018.0		—			11,087.8
DUE FROM AFFILIATES	1,303.7		5,270.0		2,035.5			6,869.9		(15,479.1		)	—
INVESTMENTS IN AFFILIATES	7,743.8		—		—			—		(7,743.8		)	—
OTHER ASSETS, NET	—		43.1		—			324.9		(130.4		)	237.6
	$	11,131.6	$	5,849.5	$	2,037.5		$	19,139.3	$	(24,547.4	)	$	13,610.5
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	60.7	$	69.6	$	34.8		$	610.4	$	—		$	775.5
Accounts payable to affiliates	19.4		176.3		—			998.4		(1,194.1		)	—
Total current liabilities	80.1		245.9		34.8			1,608.8		(1,194.1		)	775.5
DUE TO AFFILIATES	751.9		4,354.3		1,763.7			8,609.2		(15,479.1		)	—
LONG-TERM DEBT	3,782.4		149.0		1,937.2			—		—			5,868.6
INVESTMENTS IN AFFILIAITES	—		442.0		1,319.3			—		(1,761.3		)	—
OTHER LIABILITIES	—		135.7		—			443.9		(130.4		)	449.2
ENSCO SHAREHOLDERS' EQUITY	6,517.2		522.6		(3,017.5		)	8,473.1		(5,982.5		)	6,512.9
NONCONTROLLING INTERESTS	—		—		—			4.3		—			4.3
Total equity	6,517.2		522.6		(3,017.5		)	8,477.4		(5,982.5		)	6,517.2
	$	11,131.6	$	5,849.5	$	2,037.5		$	19,139.3	$	(24,547.4	)	$	13,610.5

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ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Six Months Ended June 30, 2016 (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	$	(83.4	)	$	130.8		$	(60.4	)	$	813.2		$	—		$	800.2
INVESTING ACTIVITIES
Maturities of short-term investments	1,032.0			—			—			—			—			1,032.0
Purchases of short-term investments	(862.0		)	—			—			—			—			(862.0		)
Additions to property and equipment	—			—			—			(209.4		)	—			(209.4		)
Purchase of affiliate debt	(142.0		)	—			—			—			142.0			—
Other	—			—			—			7.6			—			7.6
Net cash provided by (used in) investing activities of continuing operations	28.0			—			—			(201.8		)	142.0			(31.8		)
FINANCING ACTIVITIES
Reduction of long-term borrowings	(542.8		)	—			—			—			(142.0		)	(684.8		)
Proceeds from equity issuance	585.5			—			—			—			—			585.5
Cash dividends paid	(5.5		)	—			—			—			—			(5.5		)
Advances from (to) affiliates	638.9			(130.8		)	84.5			(592.6		)	—			—
Other	(1.9		)	—			—			—			—			(1.9		)
Net cash provided by (used in) financing activities	674.2			(130.8		)	84.5			(592.6		)	(142.0		)	(106.7		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—			1.4			—			1.4
Investing activities	—			—			—			6.3			—			6.3
Net cash used in discontinued operations	—			—			—			7.7			—			7.7
Effect of exchange rate changes on cash and cash equivalents	—			—			—			(.4		)	—			(.4		)
NET INCREASE IN CASH AND CASH EQUIVALENTS	618.8			—			24.1			26.1			—			669.0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	94.0			—			2.0			25.3			—			121.3
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	712.8		$	—		$	26.1		$	51.4		$	—		$	790.3

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ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Six Months Ended June 30, 2015 (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	$	(66.2	)	$	(19.7	)	$	(49.9	)	$	1,026.8		$	—	$	891.0
INVESTING ACTIVITIES
Additions to property and equipment	—			(5.1		)	—			(908.8		)	—		(913.9		)
Maturities of short-term investments	712.0			—			—			45.3					757.3
Purchases of short-term investments	(650.0		)	—			—			—			—		(650.0		)
Other	—			—			—			1.1			—		1.1
Net cash provided by (used in) investing activities of continuing operations	62			(5.1		)	—			(862.4		)	—		(805.5		)
FINANCING ACTIVITIES
Proceeds from issuance of senior notes	1,078.7			—			—			—			—		1,078.7
Reduction of long-term borrowings	(998.3		)	—			—			(59.7		)	—		(1,058.0		)
Cash dividends paid	(70.5		)	—			—			—			—		(70.5		)
Premium paid on redemption of debt	(27.2		)	—			—			(3.1		)	—		(30.3		)
Debt financing costs	(10.5		)	—			—			—			—		(10.5		)
Advances from (to) affiliates	88.2			24.8			63.5			(176.5		)	—		—
Other	(9.0		)	—			—			2.2			—		(6.8		)
Net cash provided by (used in) financing activities	51.4			24.8			63.5			(237.1		)	—		(97.4		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—			(4.2		)	—		(4.2		)
Investing activities	—			—			—			(0.6		)	—		(0.6		)
Net cash used in discontinued operations	—			—			—			(4.8		)	—		(4.8		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			.2			—		.2
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	47.2			—			13.6			(77.3		)	—		(16.5		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	287.4			—			90.8			286.6			—		664.8
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	334.6		$	—		$	104.4		$	209.3		$	—	$	648.3

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Item 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations

Management's Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the accompanying unaudited consolidated financial statements as of June 30, 2016 and for the three-month and six-month periods ended June 30, 2016 and 2015 included elsewhere herein and with our annual report on Form 10-K for the year ended December 31, 2015. The following discussion and analysis contains forward-looking statements that involve risks and uncertainties. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of certain factors, including those set forth under “Risk Factors” in Item 1A of our annual report and elsewhere in this quarterly report. See “Forward-Looking Statements.”

EXECUTIVE SUMMARY

Our Business

We are one of the leading providers of offshore contract drilling services to the international oil and gas industry. We currently own and operate an offshore drilling rig fleet of 57 rigs, with drilling operations in most of the strategic markets around the globe. We also have four rigs under construction. Our rig fleet consists of eight drillships, 10 dynamically positioned semisubmersible rigs, three moored semisubmersible rigs and 40 jackup rigs. We operate the world's second largest fleet amongst competitive rigs, including one of the newest ultra-deepwater fleets in the industry and a leading premium jackup fleet.

Our Industry

The contracting environment remained very challenging for offshore drilling contractors during the second quarter with customers exploring subletting opportunities for contracted rigs as well as requesting contract concessions or terminating drilling contracts. Crude oil prices have ranged from $26 to $51 per barrel during the first half of 2016, reaching a 12 year low in February. The sustained decline in oil prices from 2014 highs has caused a significant decline in demand for offshore drilling services as many projects have become uneconomical, resulting in few market tenders in recent periods. Operators continue to significantly reduce their capital spending budgets, including the cancellation or deferral of existing programs, and are expected to continue operating under reduced budgets in the current commodity price environment. These declines in capital spending levels, together with the oversupply of rigs, have resulted in significantly reduced day rates and utilization, and we expect this trend to continue. Although oil prices have improved from 2016 lows, we do not expect a meaningful improvement in demand for offshore drilling services in the near term.

In general, recent contract awards have been short-term in nature and subject to an extremely competitive bidding process. The intense pressure on operating day rates may result in rates that approximate, or are slightly lower than, direct operating expenses. In addition, we are seeing increased pressure to accept other less favorable contractual and commercial terms, including reduced or no mobilization and/or demobilization fees; reduced day rates during downtime; reduced standby, redrill and moving rates; caps on reimbursements for downhole tools; reduced periods to remediate equipment breakdowns or other deviations from contractual standards of performance; certain limitations on our ability to be indemnified; increases in the nature and amounts of liability allocated to us; and reduced early termination fees and/or termination notice periods.

Liquidity Position

We have historically relied on our cash flow from continuing operations to meet liquidity needs and fund the majority of our cash requirements. We periodically rely on the issuance of debt and/or equity securities to supplement our liquidity needs. Based on our balance sheet, our contractual backlog and $2.25 billion available under our revolving credit facility, we expect to fund our short-term and long-term liquidity needs, including contractual obligations and anticipated capital expenditures, as well as working capital requirements, from cash and cash equivalents, short-term investments, operating cash flows, and, if necessary, funds borrowed under our revolving credit facility or other future financing arrangements. Notwithstanding our current liquidity position, significant further deterioration in demand for offshore drilling could have a material adverse affect on our ability to meet our financial obligations.

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Equity Offering

On April 20, 2016, we closed an underwritten public offering of 65,550,000 Class A ordinary shares at $9.25 per share, inclusive of shares purchased under an underwriters' option. We received net proceeds from the offering of $585.5 million.

Cash and Debt

As of June 30, 2016, we had $4.9 billion in total debt outstanding, representing approximately 38% of our total capitalization. We also had $1.8 billion in cash and cash equivalents and short-term investments and a $2.25 billion undrawn senior unsecured revolving credit facility with a term that expires in September 2019 (the "Credit Facility"). The Credit Facility requires us to maintain a total debt to total capitalization ratio that is less than or equal to 60%.

In March 2016, we launched cash tender offers to repurchase up to $750.0 million aggregate purchase price of our outstanding debt. The tenders expired on April 1, 2016. We received tenders totaling $860.7 million for an aggregate purchase price of $622.3 million. In April, we used cash on-hand to settle the tendered debt. In addition, during the second quarter, we repurchased $79.5 million of our 4.70% Senior Notes due 2021 for $62.5 million on the open market.

We recognized a pre-tax gain from debt extinguishment of approximately $260.8 million related to the tender offers and open market repurchases, net of discounts, premiums, debt issuance costs and transaction costs.

After giving effect to the tender offers and the open market repurchases, our next debt maturity is $454.3 million during 2019, followed by $759.9 million, $778.0 million, $623.2 million and $669.3 million during 2020, 2021, 2024 and 2025, respectively.

Backlog

As of June 30, 2016, our backlog was $4.1 billion as compared to $5.8 billion as of December 31, 2015. Our backlog declined primarily due to revenues realized during the first half of the year, various contract terminations and reduced day rates on our jackup rigs contracted with Saudi Aramco, partially offset by extensions on our management services contracts in the U.S. Gulf of Mexico, contract extensions at reduced rates and various short-term contract awards.

As our customers continue to reduce capital spending, we will likely experience further declines in backlog for the remainder of the year. Our declining backlog, coupled with lower demand, will result in a decline in revenues and operating cash flows for the remainder of 2016.

BUSINESS ENVIRONMENT

Floaters

The floater contracting environment continues to be challenged by reduced demand, as well as excess newbuild supply. Floater demand has declined significantly due to lower commodity prices which have caused our customers to rationalize capital expenditures, resulting in the cancellation and delay of drilling programs. In addition, certain customers are exploring subletting opportunities for contracted rigs as well as requesting contract concessions or terminating or otherwise repudiating drilling contracts. We expect this trend to continue until we see a meaningful recovery in commodity prices.

In April, we received a notice of early termination for convenience from our ENSCO 8505 customer working in the U.S. Gulf of Mexico. The contract is now scheduled to end in August 2016.

In May, we agreed to extend the ENSCO 6002 contract term by 18 months at a reduced rate, reduce the ENSCO 6001 contracted rate and early terminate the ENSCO 6003 and ENSCO 6004 contracts.

In June, we reached an agreement with our ENSCO DS-9 customer in settlement and release of the customer's ongoing early termination obligations. We recognized $185.0 million of revenues for the lump-sum consideration received under this settlement. The contract was terminated for convenience by the customer in July 2015, whereby our customer was obligated to pay us monthly termination fees for two years under the termination provisions of the contract.

Also in June, we reached an agreement with our ENSCO 8503 customer to settle the customer's remaining obligations under the contract, which was scheduled to expire in August 2017. We recognized $20.0 million of revenues for the lump-sum consideration received under this settlement.

In July, we reached an agreement to extend the ENSCO 5006 contract term by 15 months at a reduced rate, which resulted in additional backlog.

During the second quarter, we sold ENSCO DS-1, ENSCO 6003 and ENSCO 6004 for scrap value resulting in an insignificant net pre-tax loss included in contract drilling expense on our condensed consolidated statements of operations. Additionally, we sold ENSCO DS-2 and ENSCO 6000 for scrap value resulting in an insignificant net pre-tax gain included in loss from discontinued operations, net, on our condensed consolidated statements of operations.

Currently, there are approximately 65 competitive newbuild drillships and semisubmersible rigs reported to be under construction, of which approximately 25 are scheduled to be delivered by the end of 2017. Roughly half of the anticipated deliveries are without contracts. Several newbuild deliveries have already been delayed into future years, and we expect that more uncontracted newbuilds will be delayed or cancelled.

Drilling contractors have retired 61 floaters over the past two years due to a lack of contracting opportunities. Approximately 40 floaters older than 30 years of age are currently idle. Approximately 30 additional floaters greater than 30 years old have contracts that will expire by the end of 2017 without follow-on work. Operating costs associated with keeping these rigs idle as well as expenditures required to recertify these aging rigs may prove cost prohibitive. Drilling contractors may instead elect to scrap or cold-stack some or all of these rigs. We expect floater scrapping and cold-stacking to continue throughout 2016 and 2017.

Jackups

Jackup demand also declined significantly due to lower commodity prices. As customers continue to rationalize spending, they have cancelled and delayed drilling programs. In addition, certain customers are requesting contract concessions or terminating drilling contracts. We expect that jackup day rates and utilization will remain under pressure until we see a meaningful recovery in commodity prices.

42

In April, we received a notice of early termination for convenience from our ENSCO 83 customer effective May 2016.

During the second quarter, we sold ENSCO 91 and ENSCO 58 for scrap value resulting in insignificant pre-tax gains included in contract drilling expense and loss from discontinued operations, net, respectively, on our condensed consolidated statements of operations.

Currently, there are approximately 110 competitive newbuild jackup rigs reported to be under construction, of which approximately 90 are scheduled to be delivered by the end of 2017, most of which are without a contract. Over the past year, some jackup orders have been cancelled, and many newbuild jackups have been delayed. We expect that additional rigs may be delayed or cancelled given limited contracting opportunities.

Over the past two years, drilling contractors have retired 20 competitive jackups. Currently, approximately 80 marketed jackups older than 30 years of age are idle. Furthermore, approximately 65 jackups that are 30 years of age or older have contracts that expire before the end of 2017, and these rigs may be unable to find additional work. Operating costs associated with keeping these rigs idle as well as expenditures required to recertify these aging rigs may prove cost prohibitive. Drilling contractors may instead elect to scrap or cold-stack these rigs. Although not significant to date, we expect jackup scrapping and cold-stacking to accelerate during 2016 and into 2017.

RESULTS OF OPERATIONS

The following table summarizes our condensed consolidated results of operations for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Revenues	$	909.6		$	1,059.0		$	1,723.6		$	2,222.9
Operating expenses
Contract drilling (exclusive of depreciation)	350.2			502.6			713.9			1,020.9
Depreciation	112.4			140.5			225.7			277.6
General and administrative	27.4			29.7			50.8			59.8
Operating income	419.6			386.2			733.2			864.6
Other income (expense), net	209.9			(55.4		)	145.3			(128.0		)
Provision for income taxes	36.7			58.0			108.1			135.7
Income from continuing operations	592.8			272.8			770.4			600.9
Loss from discontinued operations, net	(.2		)	(10.1		)	(1.1		)	(10.3		)
Net income	592.6			262.7			769.3			590.6
Net income attributable to noncontrolling interests	(2.0		)	(2.4		)	(3.4		)	(5.6		)
Net income attributable to Ensco	$	590.6		$	260.3		$	765.9		$	585.0

Excluding the impact of ENSCO DS-9 and ENSCO 8503 lump-sum termination payments of $185.0 million and $20.0 million, respectively, revenues for the three-month period ended June 30, 2016 declined $354.4 million, or 33%, as compared to the prior year quarter primarily due to fewer days under contract across the fleet and, to a lesser extent, lower average day rates. This decline was partially offset by commencement of ENSCO DS-8 drilling operations, revenues from jackup rigs that were undergoing shipyard projects during the prior year period and ENSCO DS-9 revenues recognized prior to the aforementioned lump-sum settlement.

Excluding the impact of ENSCO DS-9 and ENSCO 8503 lump-sum termination payments, revenues for the six-month period ended June 30, 2016 declined $704.3 million, or 32%, as compared to the prior year period primarily due to fewer days under contract across the fleet, and to a lesser extent, lower average day rates. This decline was partia

43

lly offset by commencement of ENSCO DS-8 drilling operations, additional ENSCO 5006 days under contract, revenues from jackup rigs that were undergoing shipyard projects during the prior year period and ENSCO DS-9 revenues recognized prior to the aforementioned lump-sum settlement.

Contract drilling expense declined $152.4 million, or 30%, and $307.0 million, or 30%, for the three-month and six-month periods ended June 30, 2016, respectively, primarily due to rig stackings and other cost control initiatives which reduced offshore personnel costs and daily rig operating expenses and lower repair costs incurred on jackup rigs that were undergoing shipyard projects during the prior year period. These declines were partially offset by higher ENSCO DS-8 and ENSCO DS-9 contract drilling expense.

Depreciation expense declined $28.1 million, or 20%, and $51.9 million, or 19%, for the three-month and six-month periods ended June 30, 2016, respectively, primarily due to lower depreciation expense on rigs that were impaired during 2015, partially offset by the addition of ENSCO DS-8 and ENSCO 110 to the active fleet.

General and administrative expenses declined by $2.3 million, or 8%, and $9.0 million, or 15%, for the three-month and six-month periods ended June 30, 2016, respectively, primarily due to lower shore-based headcount levels.

Other income (expense), net, for the three-month and six-month periods ended June 30, 2016 included gains on debt extinguishment of $260.8 million.

A significant number of our drilling contracts are of a long-term nature. Accordingly, an increase or decline in demand for contract drilling services generally affects our operating results and cash flows gradually over future quarters as long-term contracts expire. We expect operating results to decline during 2016 and 2017 as long-term contracts expire, and our rigs either go uncontracted or we renew contracts at significantly lower rates.

Rig Counts, Utilization and Average Day Rates

The following table summarizes our offshore drilling rigs by reportable segment, rigs under construction and rigs held-for-sale as of June 30, 2016 and 2015:

	2016	2015
Floaters(1)(2)	19	21
Jackups(3)	36	37
Under construction(2)	4	5
Held-for-sale(3)(4)	2	6
Total	61	69

⁽¹⁾  During the second quarter of 2016, we sold ENSCO DS-1, ENSCO 6003 and ENSCO 6004.

⁽²⁾  During the third quarter of 2015, we accepted delivery of ENSCO DS-8, an ultra-deepwater drillship.

⁽³⁾  During the third quarter of 2015, we classified ENSCO 91 as held-for-sale.

⁽⁴⁾  During the second quarter of 2016, we sold ENSCO DS-2, ENSCO 6000, ENSCO 91 and ENSCO 58. During the fourth quarter of 2015, we sold ENSCO 5001.

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The following table summarizes our rig utilization and average day rates by reportable segment for the three-month and six-month periods ended June 30, 2016 and 2015:

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Rig Utilization(1)
Floaters	57		%	76		%	60		%	81		%
Jackups	63		%	77		%	65		%	82		%
Total	61		%	76		%	63		%	81		%
Average Day Rates(2)
Floaters	$	359,575		$	417,463		$	362,427		$	421,603
Jackups	111,791			139,797			115,067			142,079
Total	$	194,754		$	237,263		$	201,805		$	240,762

⁽¹⁾  Rig utilization is derived by dividing the number of days under contract by the number of days in the period. Days under contract equals the total number of days that rigs have earned and recognized day rate revenue, including days associated with early contract terminations, compensated downtime and mobilizations. When revenue is earned but is deferred and amortized over a future period, for example when a rig earns revenue while mobilizing to commence a new contract or while being upgraded in the shipyard, the related days are excluded from days under contract.

For newly-constructed or acquired rigs, the number of days in the period begins upon commencement of drilling operations for rigs with a contract or when the rig becomes available for drilling operations for rigs without a contract.

⁽²⁾  Average day rates are derived by dividing contract drilling revenues, adjusted to exclude certain types of non-recurring reimbursable revenues, lump-sum revenues and revenues attributable to amortization of drilling contract intangibles, by the aggregate number of contract days, adjusted to exclude contract days associated with certain mobilizations, demobilizations, shipyard contracts and standby contracts.

Operating Income

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."

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Three Months Ended June 30, 2016

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	636.4	$	251.3	$	21.9	$	909.6	$	—		$	909.6
Operating expenses
Contract drilling (exclusive of depreciation)	208.6		122.3		19.3		350.2		—			350.2
Depreciation	77.8		30.1		—		107.9		4.5			112.4
General and administrative	—		—		—		—		27.4			27.4
Operating income	$	350.0	$	98.9	$	2.6	$	451.5	$	(31.9	)	$	419.6

Three Months Ended June 30, 2015

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	634.3	$	384.1	$	40.6	$	1,059.0	$	—		$	1,059.0
Operating expenses
Contract drilling (exclusive of depreciation)	277.7		192.7		32.2		502.6		—			502.6
Depreciation	94.4		43.6		—		138.0		2.5			140.5
General and administrative	—		—		—		—		29.7			29.7
Operating income	$	262.2	$	147.8	$	8.4	$	418.4	$	(32.2	)	$	386.2

Six Months Ended June 30, 2016

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	1,149.0	$	529.2	$	45.4	$	1,723.6	$	—		$	1,723.6
Operating expenses
Contract drilling (exclusive of depreciation)	419.9		256.8		37.2		713.9		—			713.9
Depreciation	158.1		58.7		—		216.8		8.9			225.7
General and administrative	—		—		—		—		50.8			50.8
Operating income	$	571.0	$	213.7	$	8.2	$	792.9	$	(59.7	)	$	733.2

Six Months Ended June 30, 2015

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	1,329.3	$	812.4	$	81.2	$	2,222.9	$	—		$	2,222.9
Operating expenses
Contract drilling (exclusive of depreciation)	571.2		384.2		65.5		1,020.9		—			1,020.9
Depreciation	187.4		85.1		—		272.5		5.1			277.6
General and administrative	—		—		—		—		59.8			59.8
Operating income	$	570.7	$	343.1	$	15.7	$	929.5	$	(64.9	)	$	864.6

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Floaters

Excluding the impact of ENSCO DS-9 and ENSCO 8503 lump-sum termination payments of $185.0 million and $20.0 million, respectively, floater revenues for the three-month period ended June 30, 2016 declined $202.9 million, or 32%, as compared to the prior year quarter primarily due to fewer days under contract across the floater fleet and, to a lesser extent, lower average day rates. This decline was partially offset by commencement of ENSCO DS-8 drilling operations and ENSCO DS-9 revenues recognized prior to the aforementioned lump-sum settlement.

Excluding the impact of ENSCO DS-9 and ENSCO 8503 lump-sum termination payments, floater revenues for the six-month period ended June 30, 2016 declined $385.3 million, or 29%, as compared to the prior year period primarily due to fewer days under contract across the floater fleet and, to a lesser extent, lower average day rates. This decline was partially offset by commencement of ENSCO DS-8 drilling operations, additional ENSCO 5006 days under contract and ENSCO DS-9 revenues recognized prior to the aforementioned lump-sum settlement.

Floater contract drilling expense for the three-month and six-month periods ended June 30, 2016 declined $69.1 million, or 25%, and $151.3 million, or 26%, respectively, as compared to the prior year periods primarily due to rig stackings and other cost control initiatives which reduced offshore personnel costs and daily rig operating expenses. These declines were partially offset by higher ENSCO DS-8 and ENSCO DS-9 contract drilling expense.

Floater depreciation expense declined by $16.6 million, or 18%, and $29.3 million, or 16%, for the three-month and six-month periods ended June 30, 2016, respectively, as compared to the prior year periods primarily due to lower depreciation on floaters that were impaired during 2015, partially offset by the addition of ENSCO DS-8 to the active fleet.

Jackups

Jackup revenues for the three-month and six-month periods ended June 30, 2016 declined $132.8 million, or 35%, and $283.2 million, or 35%, respectively, as compared to the prior year periods primarily due to fewer days under contract across our jackup fleet and, to a lesser extent, lower average day rates. These declines were partially offset by revenue generated from jackups that were undergoing shipyard projects in the prior year periods and commencement of ENSCO 110 drilling operations.

Jackup contract drilling expense for the three-month and six-month periods ended June 30, 2016 declined $70.4 million, or 37%, and $127.4 million, or 33%, respectively, as compared to the prior year period due to rig stackings, as well as other cost control initiatives which reduced offshore personnel costs and daily rig operating expenses, and lower repair costs on jackups rigs that were undergoing shipyard projects during the prior year period. These declines were partially offset by deferred gain amortization on the sale of ENSCO 83, ENSCO 89 and ENSCO 98 during 2015 and higher ENSCO 110 contract drilling expense during 2016.

Jackup depreciation expense for the three-month and six-month periods ended June 30, 2016 declined $13.5 million, or 31%, and $26.4 million, or 31%, respectively, as compared to the prior year periods due primarily to lower depreciation expense on jackups that were impaired during 2015, partially offset by the addition of ENSCO 110 to the active fleet.

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Other Income (Expense)

The following table summarizes other income (expense) for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Interest income	$	2.5		$	3.4		$	4.8		$	5.8
Interest expense, net:
Interest expense	(66.7		)	(78.0		)	(143.9		)	(150.0		)
Capitalized interest	12.7			26.8			24.8			46.4
	(54.0		)	(51.2		)	(119.1		)	(103.6		)
Other, net	261.4			(7.6		)	259.6			(30.2		)
	$	209.9		$	(55.4	)	$	145.3		$	(128.0	)

Interest expense for three-month and six-month periods ended June 30, 2016 declined as compared to the prior year periods due to the repurchase of $940.2 million of debt during 2016, partially offset by the impact of higher interest rates on our debt refinanced during 2015. Interest expense capitalized during the three-month and six-month periods ended June 30, 2016 declined as compared to the prior year periods due to newbuild rigs placed into service during 2015.

Other, net, for the three-month and six-month periods ended June 30, 2016 included a pre-tax gain on debt extinguishment of $260.8 million related to debt repurchases during the second quarter. Other, net, for the three-month and six-month periods ended June 30, 2015 included a pre-tax loss on debt extinguishment of $6.9 million and $33.5 million, respectively, related to make-whole premiums on our 2015 debt redemption.

Our functional currency is the U.S. dollar, and a portion of the revenues earned and expenses incurred by certain of our subsidiaries are denominated in currencies other than the U.S. dollar. These transactions are remeasured in U.S. dollars based on a combination of both current and historical exchange rates. Net foreign currency exchange losses of $100,000 and $1.8 million, inclusive of offsetting fair value derivatives, were included in other, net, for the three-month and six-month periods ended June 30, 2016, respectively. Net foreign currency exchange losses of $700,000 and net foreign currency exchange gains of $1.5 million, inclusive of offsetting fair value derivatives, were included in other, net, for the three-month and six-month periods ended June 30, 2015, respectively.

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Provision for Income Taxes

Ensco plc, our parent company, is domiciled and resident in the U.K. Our subsidiaries conduct operations and earn income in numerous countries and are subject to the laws of taxing jurisdictions within those countries. The income of our non-U.K. subsidiaries is not subject to U.K. taxation. Income tax rates imposed in the tax jurisdictions in which our subsidiaries conduct operations vary, as does the tax base to which the rates are applied. In some cases, tax rates may be applicable to gross revenues, statutory or negotiated deemed profits or other bases utilized under local tax laws, rather than to net income. Our drilling rigs frequently move from one taxing jurisdiction to another to perform contract drilling services. In some instances, the movement of drilling rigs among taxing jurisdictions will involve the transfer of ownership of the drilling rigs among our subsidiaries. As a result of frequent changes in the taxing jurisdictions in which our drilling rigs are operated and/or owned, changes in the overall level of our income and changes in tax laws, our consolidated effective income tax rate may vary substantially from one reporting period to another.

Our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2016 was 5.8% and 12.3%, respectively. Excluding the impact of discrete tax items, our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2016 was 19.9% and 24.3%, respectively. Discrete tax items for the three-month period ended June 30, 2016 resulted primarily from the gain on debt extinguishment, income from the ENSCO DS-9 lump-sum consideration and restructuring transactions involving certain of our subsidiaries.

Our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2015 was 17.5% and 18.4%, respectively. There were no material discrete tax items for the three-month period ended June 30, 2015. Excluding the impact of discrete income tax items for the six-month period ended June 30, 2015, our consolidated effective income tax rate was 17.5%. These discrete tax items were primarily attributable to the recognition of liabilities for unrecognized tax benefits associated with tax positions taken in prior years.

The increase in our consolidated effective tax rate, excluding discrete items, for the three-month and six-month periods ended June 30, 2016 as compared to the prior year period is primarily attributable to an increase in the relative components of our estimated 2016 earnings, excluding discrete items, generated in tax jurisdictions with higher tax rates, partially offset by the impact of restructuring transactions involving certain of our subsidiaries.

Discontinued Operations

During the second quarter of 2016, we sold ENSCO DS-2, ENSCO 6000 and ENSCO 58 for scrap value resulting in a net pre-tax gain on sale of $1.2 million included in loss from discontinued operations, net, on our condensed consolidated statements of operations.

ENSCO 7500 and ENSCO 90 remain classified as held-for-sale on our June 30, 2016 condensed consolidated balance sheet and are included in discontinued operations.

For the three-month and six-month period ended June 30, 2015, loss from discontinued operations, net, included the operating results of ENSCO 93 and ENSCO 58, stacking costs of uncontracted rigs included in discontinued operations, a pre-tax impairment of $7.2 million on ENSCO 6000 and a pre-tax gain of $1.6 million on the sale of ENSCO 5002. A discrete tax benefit of $13.3 million was included in loss from discontinued operations, net, in the first quarter of 2015.

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LIQUIDITY AND CAPITAL RESOURCES

We have historically relied on our cash flow from continuing operations to meet liquidity needs and fund the majority of our cash requirements. We periodically rely on the issuance of debt and/or equity securities to supplement our liquidity needs. A substantial portion of our operating cash flow has been invested in the expansion and enhancement of our drilling rig fleet through newbuild construction and upgrade projects and the return of capital to shareholders through dividend payments. We expect that cash flow generated during 2016 will primarily be used to fund capital expenditures and repurchase debt.

On April 20, 2016, we closed an underwritten public offering of 65,550,000 Class A ordinary shares at $9.25 per share, inclusive of shares purchased under an underwriters' option. We received net proceeds from the offering of $585.5 million.

In March 2016, we launched cash tender offers to repurchase up to $750.0 million aggregate purchase price of our outstanding debt. The tenders expired on April 1, 2016. We received tenders totaling $860.7 million for an aggregate purchase price of $622.3 million. In April, we used cash on-hand to settle the tendered debt. In addition, during the second quarter, we repurchased $79.5 million of our 4.70% Senior Notes due 2021 for $62.5 million on the open market.

Our Board of Directors declared a $0.01 per share quarterly cash dividend during the first and second quarters. The declaration and amount of future dividends is at the discretion of our Board of Directors. In the future, our Board of Directors may, without advance notice, determine to reduce or suspend our dividend in order to maintain our financial flexibility and best position us for long-term success. When evaluating dividend payment timing and amounts, our Board of Directors considers several factors, including our profitability, liquidity, financial condition, market outlook, reinvestment opportunities and capital requirements.

During the six-month period ended June 30, 2016, our primary sources of cash were $800.2 million generated from operating activities of continuing operations and $585.5 million in proceeds from our April 2016 equity offering. Our primary uses of cash for the same period were $684.8 million for the repurchase of long-term borrowings and $209.4 million for the construction, enhancement and other improvement of our drilling rigs.

During the six-month period ended June 30, 2015, our primary source of cash was $1.1 billion in proceeds from our March 2015 debt issuance and $891.0 million generated from operating activities of continuing operations. Our primary uses of cash for the same period were $1.1 billion for the repayment of long-term borrowings and$913.9 million for the construction, enhancement and other improvement of our drilling rigs.

Cash Flow and Capital Expenditures

Our cash flow from operating activities of continuing operations and capital expenditures for the six-month periods ended June 30, 2016 and 2015 were as follows (in millions):

	2016		2015
Cash flow from operating activities of continuing operations	$	800.2	$	891.0
Capital expenditures
New rig construction	$	123.1	$	681.9
Rig enhancements	14.3		114.7
Minor upgrades and improvements	72.0		117.3
	$	209.4	$	913.9

Excluding the impact of ENSCO DS-9 and ENSCO 8503 lump-sum termination payments of $185.0 million and $20.0 million, respectively, cash flow from operating activities of continuing operations declined$295.8 million, or 33%, for the six-month period ended June 30, 2016 as compared to the prior year period. The decline primarily

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resulted from a $660.1 million decline in net cash receipts from contract drilling services and a $16.5 million increase in cash payments for interest, offset by a $400.2 million decline in net cash payments for contract drilling services.

We currently have four uncontracted rigs under construction, including one ultra-deepwater drillship, two premium jackup rigs and one ultra-premium harsh environment jackup rig. During the third quarter of 2015, we agreed with the shipyard to delay the delivery of ENSCO DS-10 until the first quarter of 2017. The final milestone payment for ENSCO DS-10 is due upon rig delivery. During the first quarter of 2016, we agreed with the shipyard to delay the delivery of ENSCO 123 until the first quarter of 2018. ENSCO 140 and ENSCO 141 are scheduled for delivery during the third quarter of 2016.

The following table summarizes the cumulative amount of contractual payments made as of June 30, 2016 for our rigs under construction and estimated timing of our remaining contractual payments (in millions):

	Cumulative Paid(1)		Remaining 2016		2017		2018		Total(2)
ENSCO DS-10	$	240.8	$	4.6	$	308.9	$	—	$	554.3
ENSCO 123	53.5		4.0		8.0		215.3		280.8
ENSCO 140	156.8		39.9		—		—		196.7
ENSCO 141	156.8		38.8		—		—		195.6
	$	607.9	$	87.3	$	316.9	$	215.3	$	1,227.4

⁽¹⁾  Cumulative paid represents the aggregate amount of contractual payments made from commencement of the construction agreement through June 30, 2016.

⁽²⁾  Total commitments are based on fixed-price shipyard construction contracts, exclusive of costs associated with commissioning, systems integration testing, project management and capitalized interest.

The actual timing of these expenditures may vary based on the completion of various construction milestones, which are, to a large extent, beyond our control.    

Based on our current projections, we expect capital expenditures during 2016 to include approximately $250.0 million for newbuild construction, approximately $25.0 million for rig enhancement projects and approximately $125.0 million for minor upgrades and improvements. Depending on market conditions and future opportunities, we may make additional capital expenditures to upgrade rigs for customer requirements and construct or acquire additional rigs.

Financing and Capital Resources

Equity Offering

We filed an automatically effective shelf registration statement on Form S-3 with the U.S. Securities and Exchange Commission on January 15, 2015, which provides us the ability to issue debt securities, equity securities, guarantees and/or units of securities in one or more offerings. The registration statement, as amended, expires in January 2018.

On April 20, 2016, we closed an underwritten public offering of 65,550,000 Class A ordinary shares at $9.25 per share, inclusive of shares purchased under an underwriters' option. We received net proceeds from the offering of approximately $585.5 million.

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Tender Offers and Open Market Repurchases

In March 2016, we launched cash tender offers (the "Tender Offers") to repurchase up to $750.0 million aggregate purchase price of our outstanding debt. The Tender Offers expired on April 1, 2016. We received tenders totaling $860.7 million for an aggregate purchase price of $622.3 million. In April, we used cash on-hand to settle the tendered debt. In addition, during the second quarter, we repurchased $79.5 million of our 4.70% Senior Notes due 2021 for $62.5 million on the open market. Our Tender Offers and open market repurchases during the quarter were as follows (in millions):

	Aggregate Principal Amount Purchased		Aggregate Purchase Price(1)		Discount %
8.50% Senior Notes due 2019	$	45.7	$	38.3	16.2	%
6.875% Senior Notes due 2020	140.1		103.7		26.0	%
4.70% Senior Notes due 2021	722.0		525.1		27.3	%
4.50% Senior Notes due 2024	1.7		0.9		47.1	%
5.20% Senior Notes due 2025	30.7		16.8		45.3	%
Total	$	940.2	$	684.8	27.2	%

⁽¹⁾  Excludes accrued interest paid to holders who tendered in connection with the Tender Offers.

During the second quarter, we recognized a pre-tax gain from debt extinguishment of approximately $260.8 million related to the Tender Offers and open market repurchases, net of discounts, premiums, debt issuance costs and transaction costs.

After giving effect to the Tender Offers and the open market repurchase, our next debt maturity is $454.3 million during 2019, followed by $759.9 million, $778.0 million, $623.2 million and $669.3 million during 2020, 2021, 2024 and 2025, respectively.

From time to time, we and our affiliates may repurchase additional outstanding senior notes in the open market, in privately negotiated transactions, through tender offers, exchange offers or otherwise, or we may redeem senior notes that are able to be redeemed, pursuant to their terms. Any future repurchases, exchanges or redemptions will depend on various factors existing at that time and there can be no assurance as to which, if any, of these alternatives we may choose to pursue. There can be no assurance that an active trading market will exist for our outstanding senior notes following any such transactions.

Debt to Capital

Our total debt, total capital and total debt to total capital ratios are summarized below (in millions, except percentages):

	June 30, 2016			December 31, 2015
Total debt	$	4,905.6		$	5,868.6
Total capital*	$	12,785.5		$	12,381.5
Total debt to total capital	38.4		%	47.4		%

  *Total capital consists of total debt and Ensco shareholders' equity.

Revolving Credit

We have a $2.25 billion senior unsecured revolving credit facility with a syndicate of banks to be used for general corporate purposes with a term expiring on September 30, 2019 (the "Credit Facility"). Advances under the Credit Facility bear interest at Base Rate or LIBOR plus an applicable margin rate, depending on our credit ratings.

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We are required to pay a quarterly commitment fee on the undrawn portion of the $2.25 billion commitment, which is also based on our credit rating.

In February 2016, Moody’s announced a downgrade of our credit rating to B1, which is below investment grade. Following the downgrade, the applicable margin rates are 0.50% per annum for Base Rate advances and 1.50% per annum for LIBOR advances. Also, our quarterly commitment fee is 0.225% per annum on the undrawn portion of the $2.25 billion commitment. 

In July 2016, Standard & Poor's downgraded our credit rating one notch to BBB-, which maintains our investment grade rating with that rating agency. As previous rating actions resulted in the highest applicable margin rate and commitment fees under our Credit Facility, the July downgrade does not impact our applicable margin rate on borrowings or our quarterly commitment fee. We have limited or no access to the commercial paper market as a result of our current credit ratings.

Our access to credit and capital markets depends on the credit ratings assigned to our debt. There can be no assurance that we will be able to maintain our credit ratings, and any additional actual or anticipated downgrades in our credit ratings, including any announcement that our ratings are under review for a downgrade, could limit our available options when accessing credit and capital markets, or when restructuring or refinancing our debt. In addition, future financings or refinancings may result in higher borrowing costs and require more restrictive terms and covenants.

The Credit Facility requires us to maintain a total debt to total capitalization ratio that is less than or equal to 60%. The Credit Facility also contains customary restrictive covenants, including, among others, prohibitions on creating, incurring or assuming certain debt and liens; entering into certain merger arrangements; selling, leasing, transferring or otherwise disposing of all or substantially all of our assets; making a material change in the nature of the business; and entering into certain transactions with affiliates. We have the right, subject to receipt of commitments from new or existing lenders, to increase the commitments under the Credit Facility to an aggregate amount of up to $2.75 billion and to extend the term of the Credit Facility by one year on up to two occasions.

As of June 30, 2016, we were in compliance in all material respects with our covenants under the Credit Facility. We had no amounts outstanding under the Credit Facility as of June 30, 2016 and December 31, 2015.

Other Financing

During 2013, our shareholders approved a new share repurchase program. Subject to certain provisions under English law, including the requirement of Ensco plc to have sufficient distributable reserves, we may repurchase shares up to a maximum of $2.0 billion in the aggregate under the program, but in no case more than 35.0 million shares. As of June 30, 2016, no shares have been repurchased under the program.The program terminates in May 2018.

Other Commitments

As of June 30, 2016, we were contingently liable for an aggregate amount of $72.3 million under outstanding letters of credit and surety bonds which guarantee our performance as it relates to our drilling contracts, contract bidding, customs duties, tax appeals and other obligations in various jurisdictions. Obligations under these letters of credit and surety bonds are not normally called, as we typically comply with the underlying performance requirement. As of June 30, 2016, we were not required to make any collateral deposits with respect to these agreements.

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Liquidity

Our liquidity position is summarized in the table below (in millions, except ratios):

	June 30, 2016		December 31, 2015
Cash and cash equivalents	$	790.3	$	121.3
Short-term investments	$	1,010.0	$	1,180.0
Working capital	$	1,943.9	$	1,509.6
Current ratio	4.2		2.9

We expect to fund our short-term liquidity needs, including contractual obligations and anticipated capital expenditures, as well as working capital requirements, from our cash and cash equivalents, short-term investments, operating cash flows, and, if necessary, funds borrowed under our revolving credit facility.

We expect to fund our long-term liquidity needs, including contractual obligations and anticipated capital expenditures, from our operating cash flows and, if necessary, funds borrowed under our revolving credit facility or other future financing arrangements.

We may decide to access debt and/or equity markets to raise additional capital or increase liquidity as necessary. 

MARKET RISK

We use derivatives to reduce our exposure to foreign currency exchange rate risk. Our functional currency is the U.S. dollar. As is customary in the oil and gas industry, a majority of our revenues and expenses are denominated in U.S. dollars; however, a portion of the revenues earned and expenses incurred by certain of our subsidiaries are denominated in currencies other than the U.S. dollar. We maintain a foreign currency exchange rate risk management strategy that utilizes derivatives to reduce our exposure to unanticipated fluctuations in earnings and cash flows caused by changes in foreign currency exchange rates.  

We utilize cash flow hedges to hedge forecasted foreign currency denominated transactions, primarily to reduce our exposure to foreign currency exchange rate risk on future expected contract drilling expenses and capital expenditures denominated in various foreign currencies. 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. As of June 30, 2016, we had cash flow hedges outstanding to exchange an aggregate $230.3 million for various foreign currencies.

We have net assets and liabilities denominated in numerous foreign currencies and use various strategies to manage our exposure to changes in foreign currency exchange rates. We occasionally enter into derivatives that hedge the fair value of recognized foreign currency denominated assets or liabilities, thereby reducing exposure to earnings fluctuations caused by changes in foreign currency exchange rates. We 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 June 30, 2016, we held derivatives not designated as hedging instruments to exchange an aggregate $145.2 million for various foreign currencies.

If we were to incur a hypothetical 10% adverse change in foreign currency exchange rates, net unrealized losses associated with our foreign currency denominated assets and liabilities as of June 30, 2016 would approximate $15.4 million. Approximately $11.8 million of these unrealized losses would be offset by corresponding gains on the derivatives utilized to offset changes in the fair value of net assets and liabilities denominated in foreign currencies.

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We utilize derivatives and undertake foreign currency exchange rate hedging activities in accordance with our established policies for the management of market risk. We mitigate our credit risk relating to derivative counterparties through a variety of techniques, including transacting with multiple, high-quality financial institutions, thereby limiting our exposure to individual counterparties and by entering into ISDA Master Agreements, which include provisions for a legally enforceable master netting agreement, with our derivative counterparties. The terms of the ISDA agreements may also include credit support requirements, cross default provisions, termination events or set-off provisions. 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.

We do not enter into derivatives for trading or other speculative purposes. We believe that our use of derivatives and related hedging activities reduces our exposure to foreign currency exchange rate risk and does not expose us to material credit risk or any other material market risk. All of our derivatives mature during the next 18 months. See Note 3 to our condensed consolidated financial statements for additional information on our derivative instruments.

CRITICAL ACCOUNTING POLICIES

The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States of America requires us to make estimates, judgments and assumptions that affect the amounts reported in our condensed consolidated financial statements and accompanying notes. Our significant accounting policies are included in Note 1 to our audited consolidated financial statements for the year ended December 31, 2015 included in our annual report on Form 10-K filed with the SEC on February 24, 2016. These policies, along with our underlying judgments and assumptions made in their application, have a significant impact on our condensed consolidated financial statements.

We identify our critical accounting policies as those that are the most pervasive and important to the portrayal of our financial position and operating results and that require the most difficult, subjective and/or complex judgments by management regarding estimates in matters that are inherently uncertain. Our critical accounting policies are those related to property and equipment, impairment of long-lived assets and income taxes. For a discussion of the critical accounting policies and estimates that we use in the preparation of our condensed consolidated financial statements, see "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations - Critical Accounting Policies and Estimates" in Part II of our annual report on Form 10-K for the year ended December 31, 2015. During the quarter ended June 30, 2016, there were no material changes to the judgments, assumptions or policies upon which our critical accounting estimates are based.

New Accounting Pronouncements

In March 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-09, Compensation — Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("Update 2016-09"), which simplifies several aspects of accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This update is effective for annual and interim periods beginning after December 15, 2016, with early adoption permitted. Transition methods vary for the related amendments. We are currently evaluating the effect that Update 2016-09 will have on our condensed consolidated financial statements and related disclosures.

In February 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-02, Leases (Topic 842): Amendments to the FASB Accounting Standards Codification ("Update 2016-02"), which requires an entity to recognize lease assets and lease liabilities on the balance sheet and to disclose key qualitative and quantitative information about the entity's leasing arrangements. This update is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted. A modified retrospective approach is required. We are currently evaluating the effect that Update 2016-02 will have on our condensed consolidated financial statements and related disclosures.

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During 2014, the Financial Accounting Standards Board issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606) ("Update 2014-09"), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. In 2015, the Financial Accounting Standards Board voted to delay the effective date one year. Update 2014-09 is now effective for annual and interim periods for fiscal years beginning after December 15, 2017, though companies have an option of adopting the standard for fiscal years beginning after December 15, 2016. During 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations ("Update 2016-08"), Accounting Standards Update 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing ("Update 2016-10") and Account Standards Update 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients ("Update 2016-12"). The amendments in Update 2016-08, 2016-10 and 2016-12 do not change the core principle of Update 2014-09 but instead clarify the implementation guidance on principle versus agent considerations, identifying performance obligations and the licensing implementation guidance, and provide narrow-scope improvements, respectively. Update 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP and may be adopted using a retrospective, modified retrospective or prospective with a cumulative catch-up approach. We are currently evaluating the effect that Update 2014-09 will have on our condensed consolidated financial statements and related disclosures.

During 2015, the Financial Accounting Standards Board issued Accounting Standards Update 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs ("Update 2015-03"), as updated by Update 2015-15, Interest - Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements - Amendments to SEC Paragraphs Pursuant to Staff Announcements at June 18, 2015 EITF Meeting ("Update 2015-05"), which require that debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the carrying amount of the related debt liability, consistent with debt discounts. Debt issuance costs related to line-of-credit arrangements may be presented as an asset regardless of whether there are any outstanding borrowings on the arrangement. We adopted Update 2015-03 and Update 2015-15 on a retrospective basis effective January 1, 2016. Accordingly, all debt issuance costs, except for the balance related to our line-of-credit arrangement, were presented as a deduction from the carrying amount of the related debt liability on our condensed consolidated balance sheet for all periods presented. As a result of retrospective application, we reclassified debt issuance costs of $26.5 million on our condensed consolidated balance sheet as of December 31, 2015. There is no impact to the manner in which debt issuance costs are amortized in our consolidated financial statements.

Item 3.   Quantitative and Qualitative Disclosures About Market Risk

Information required under Item 3. has been incorporated into "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations - Market Risk."

Item 4.   Controls and Procedures

Based on their evaluation as of the end of the period covered by this quarterly report on Form 10-Q, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures, as defined in Rule 13a-15 under the Securities Exchange Act of 1934, are effective.

During the fiscal quarter ended June 30, 2016, there were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1.   Legal Proceedings

Brazil Internal Investigation

Pride International, Inc. (“Pride”), a company we acquired in 2011, commenced drilling operations in Brazil in 2001. In 2008, Pride entered into a drilling services agreement with Petrobras (the "DSA") for ENSCO DS-5, a drillship ordered from Samsung Heavy Industries, a shipyard in South Korea ("SHI"). Beginning in 2006, Pride conducted periodic compliance reviews of its business with Petrobras, and, after the acquisition of Pride, Ensco conducted similar compliance reviews, the most recent of which commenced in early 2015 after media reports were released regarding ongoing investigations of various kickback and bribery schemes in Brazil involving Petrobras.

While conducting our compliance review, we became aware of an internal audit report by Petrobras alleging irregularities in relation to the DSA. Upon learning of the Petrobras internal audit report, our Audit Committee appointed independent counsel to lead an investigation into the alleged irregularities. Further, in June and July 2015, we voluntarily contacted the SEC and the DOJ, respectively, to advise them of this matter and our Audit Committee’s investigation. Independent counsel, under the direction of our Audit Committee, has substantially completed its investigation by reviewing and analyzing available documents and correspondence and interviewing current and former employees involved in the DSA negotiations and the negotiation of the ENSCO DS-5 construction contract with SHI (the "DS-5 Construction Contract").

To date, our Audit Committee has found no evidence that Pride or Ensco or any of their current or former employees were aware of or involved in any wrongdoing, and our Audit Committee has found no evidence linking Ensco or Pride to any illegal acts committed by our former marketing consultant, who provided services to Pride and Ensco in connection with the DSA. Independent counsel has continued to provide the SEC and DOJ with updates throughout the investigation, including detailed briefings regarding its investigation and findings. On December 21, 2015, we entered into a one-year tolling agreement with the DOJ. On March 7, 2016, we entered into a one-year tolling agreement with the SEC.

Subsequent to initiating our Audit Committee investigation, Brazilian court documents connected to the prosecution of former Petrobras directors and employees as well as certain other third parties, including our former marketing consultant, referenced the alleged irregularities cited in the Petrobras internal audit report. Our former marketing consultant has entered into a plea agreement with the Brazilian authorities. On January 10, 2016, Brazilian authorities filed an indictment against a former Petrobras director. This indictment states that the former Petrobras director received bribes paid out of proceeds from a brokerage agreement entered into for purposes of intermediating a drillship construction contract between SHI and Pride, which we believe to be the DS-5 Construction Contract. The parties to the brokerage agreement were a company affiliated with a person acting on behalf of the former Petrobras director, a company affiliated with our former marketing consultant, and SHI. The indictment alleges that amounts paid by SHI under the brokerage agreement ultimately were used to pay bribes to the former Petrobras director. The indictment does not state that Pride or Ensco or any of their current or former employees were involved in the bribery scheme or had any knowledge of the bribery scheme.

On January 4, 2016, we received a notice from Petrobras declaring the DSA void effective immediately. Petrobras’ notice alleges that our former marketing consultant both received and procured improper payments from SHI for employees of Petrobras and that Pride had knowledge of this activity and assisted in the procurement of and/or facilitated these improper payments. We disagree with Petrobras’ allegations. See "—DSA Dispute" below for additional information.

Outside of Petrobras’ allegations, we have not been contacted by any Brazil governmental authority regarding alleged wrongdoing by Pride or Ensco or any of their current or former employees related to this matter. We cannot

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predict whether any U.S., Brazilian or other governmental authority will seek to investigate Pride's involvement in this matter, or if a proceeding were opened, the scope or ultimate outcome of any such investigation. If the SEC or DOJ determines that violations of the FCPA have occurred, or if any governmental authority determines that we have violated applicable anti-bribery laws, they could seek civil and criminal sanctions, including monetary penalties, against us, as well as changes to our business practices and compliance programs, any of which could have a material adverse effect on our business and financial condition. Our customers, business partners and other stakeholders could seek to take actions adverse to our interests. Further, investigating and resolving such allegations is expensive and could consume significant management time and attention. Although our internal investigation is substantially complete, we cannot predict whether any additional allegations will be made or whether any additional facts relevant to the investigation will be uncovered during the course of the investigation and what impact those allegations and additional facts will have on the timing or conclusions of the investigation. Our Audit Committee will examine any such additional allegations and additional facts and the circumstances surrounding them.

DSA Dispute

As described above, on January 4, 2016, Petrobras sent a notice to us declaring the DSA void effective immediately, reserving its rights and stating its intention to seek any restitution to which it may be entitled. We disagree with Petrobras’ declaration that the DSA is void. We believe that Petrobras has repudiated the DSA and have therefore accepted the DSA as terminated on April 8, 2016 (the "Termination Date"). At this time, we cannot reasonably determine the validity of Petrobras' claim or the range of our potential exposure, if any. As a result, there can be no assurance as to how this dispute will ultimately be resolved.

We did not recognize revenue for amounts owed to us under the DSA from the beginning of the fourth quarter of 2015 through the Termination Date, as we concluded that collectability of these amounts was not reasonably assured. Additionally, our receivables from Petrobras related to the DSA from prior to the fourth quarter of 2015 are fully reserved on our condensed consolidated balance sheet as of June 30, 2016. We have initiated arbitration proceedings in the U.K. against Petrobras seeking payment of all amounts owed to us under the DSA, in addition to any other amounts to which we are entitled, and intend to vigorously pursue our claims. Petrobras subsequently filed a counterclaim seeking restitution of certain sums paid under the DSA less value received by Petrobras under the DSA. We have also initiated separate arbitration proceedings in the U.K. against SHI for any losses we have incurred in connection with the foregoing. There can be no assurance as to how these arbitration proceedings will ultimately be resolved.

Pride FCPA Investigation

During 2010, Pride and its subsidiaries resolved their previously disclosed investigations into potential violations of the U.S. Foreign Corrupt Practices Act of 1977 (the "FCPA") with the U.S. Department of Justice ("DOJ") and SEC. The settlement with the DOJ included a deferred prosecution agreement (the "DPA") between Pride and the DOJ and a guilty plea by Pride Forasol, S.A.S., one of Pride’s subsidiaries, to FCPA-related charges. During 2012, the DOJ moved to (i) dismiss the charges against Pride and end the DPA one year prior to its scheduled expiration; and (ii) terminate the unsupervised probation of Pride Forasol, S.A.S. The Court granted the motions.

     Pride has received preliminary inquiries from governmental authorities of certain countries referenced in its settlements with the DOJ and SEC. We could face additional fines, sanctions and other penalties from authorities in these and other relevant jurisdictions, including prohibition of our participating in or curtailment of business operations in certain jurisdictions and the seizure of rigs or other assets. At this stage of such inquiries, we are unable to determine what, if any, legal liability may result. Our customers in certain jurisdictions could seek to impose penalties or take other actions adverse to our business. We could also face other third-party claims by directors, officers, employees, affiliates, advisors, attorneys, agents, stockholders, debt holders, or other stakeholders. In addition, disclosure of the subject matter of the investigations and settlements could adversely affect our reputation and our ability to obtain new business or retain existing business, to attract and retain employees and to access the capital markets.

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We cannot currently predict what, if any, actions may be taken by any other applicable government or other authorities or our customers or other third parties or the effect any such actions may have on our financial position, operating results or cash flows.

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 46 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.

During 2013, we reached an agreement in principle with 58 plaintiffs to settle lawsuits filed in Mississippi for a nominal amount. A special master reviewed all 58 cases and made an allocation of settlement funds among the parties.  The District Court Judge reviewed the allocations and accepted the special master’s recommendations and approved the settlements.  The settlement documents for most of the individual plaintiffs have been processed, and the cases dismissed. The settlement documents for approximately 13 individual plaintiffs continue to be processed.

We intend to vigorously defend against the remaining 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 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 are currently subject to pending notices of assessment relating to spills of drilling fluids, oil, brine, chemicals, grease or fuel from drilling rigs operating offshore Brazil from 2008 to 2016, pursuant to which the governmental authorities have assessed, or are anticipated to assess, fines. We have contested these notices and appealed certain adverse decisions and are awaiting decisions in these cases. Although we do not expect final disposition 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 $180,000 liability related to these matters was included in accrued liabilities and other on our condensed consolidated balance sheet as of June 30, 2016.

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 $3.0 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 final disposition of this matter 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.

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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.

Item 1A.   Risk Factors 

There are numerous factors that affect our business and results of operations, many of which are beyond our control. In addition to information set forth in this quarterly report, you should carefully read and consider "Item 1A. Risk Factors" in Part I and "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in Part II of our annual report on Form 10-K for the year ended December 31, 2015, which contains descriptions of significant risks that might cause our actual results of operations in future periods to differ materially from those currently anticipated or expected. There have been no material changes from the risks previously disclosed in our annual report on Form 10-K for the year ended December 31, 2015.

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Item 2.   Unregistered Sales of Equity Securities and Use of Proceeds

The table below provides a summary of our repurchases of equity securities during the quarter ended June 30, 2016:

Issuer Purchases of Equity Securities
Period	Total Number of Securities Purchased(1)	Average Price Paid per Security		Total Number of Securities Purchased as Part of Publicly Announced Plans or Programs (2)	Approximate Dollar Value of Securities that May Yet Be Purchased Under Plans or Programs
April 1 - April 30	1,458	$	10.30	—	$	2,000,000,000
May 1 - May 31	2,607	$	11.87	—	$	2,000,000,000
June 1 - June 30	157,582	$	9.55	—	$	2,000,000,000
Total	161,647	$	9.59	—

⁽¹⁾  During the quarter ended June 30, 2016, equity securities were repurchased from employees and non-employee directors by an affiliated employee benefit trust in connection with the settlement of income tax withholding obligations arising from the vesting of share awards.  Such securities remain available for re-issuance in connection with employee share awards.

⁽²⁾  During 2013, our shareholders approved a new share repurchase program. Subject to certain provisions under English law, including the requirement of Ensco plc to have sufficient distributable reserves, we may repurchase up to a maximum of $2.0 billion in the aggregate under the program, but in no case more than 35.0 million shares. As of June 30, 2016, no shares have been repurchased under the program.The program terminates in May 2018.

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Item 6.   Exhibits

Exhibit Number	Exhibit
10.1	Fourth Amendment to the Ensco plc 2012 Long-Term Incentive Plan, effective March 24, 2016 (incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on May 25, 2016, File No. 1-08097).
*12.1	Computation of ratio of earnings to fixed charges.
*15.1	Letter regarding unaudited interim financial information.
*31.1	Certification of the Chief Executive Officer of Registrant Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
*31.2	Certification of the Chief Financial Officer of Registrant Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
**32.1	Certification of the Chief Executive Officer of Registrant Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
**32.2	Certification of the Chief Financial Officer of Registrant Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
*101.INS	XBRL Instance Document
*101.SCH	XBRL Taxonomy Extension Schema
*101.CAL	XBRL Taxonomy Extension Calculation Linkbase
*101.DEF	XBRL Taxonomy Extension Definition Linkbase
*101.LAB	XBRL Taxonomy Extension Label Linkbase
*101.PRE	XBRL Taxonomy Extension Presentation Linkbase

*   Filed herewith.

** Furnished herewith.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		Ensco plc
Date:	July 28, 2016	/s/ JONATHAN H. BAKSHT
		Jonathan H. Baksht Senior Vice President and Chief Financial Officer (principal financial officer)
		/s/ ROBERT W. EDWARDS III
		Robert W. Edwards III Vice President - Finance (principal accounting officer)

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INDEX TO EXHIBITS

Exhibit Number	Exhibit
10.1	Fourth Amendment to the Ensco plc 2012 Long-Term Incentive Plan, effective March 24, 2016 (incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on May 25, 2016, File No. 1-08097).
*12.1	Computation of ratio of earnings to fixed charges.
*15.1	Letter regarding unaudited interim financial information.
*31.1	Certification of the Chief Executive Officer of Registrant Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
*31.2	Certification of the Chief Financial Officer of Registrant Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
**32.1	Certification of the Chief Executive Officer of Registrant Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
**32.2	Certification of the Chief Financial Officer of Registrant Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
*101.INS	XBRL Instance Document
*101.SCH	XBRL Taxonomy Extension Schema
*101.CAL	XBRL Taxonomy Extension Calculation Linkbase
*101.DEF	XBRL Taxonomy Extension Definition Linkbase
*101.LAB	XBRL Taxonomy Extension Label Linkbase
*101.PRE	XBRL Taxonomy Extension Presentation Linkbase

*   Filed herewith.

** Furnished herewith.

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EX-12.1

ENSCO PLC AND SUBSIDIARIES

Statement of Calculation of Ratios of Earnings to Fixed Charges

(In millions, except ratios)

(Unaudited)

	Six Months Ended June 30, 2016			Year Ended December 31,
				2015			2014			2013			2012			2011
Earnings
Income (loss) from continuing operations before income tax	$	878.5		$	(1,471.2	)	$	(2,548.8	)	$	1,633.2		$	1,304.7		$	673.5
Fixed charges deducted from income from continuing operations	150.2			323.2			260.4			245.3			247.3			187.6
Amortization of capitalized interest	8.2			18.2			17.0			13.3			12.3			6.7
Less:
Income from continuing operations before income tax attributable to noncontrolling interests	(3.9		)	(10.5		)	(15.5		)	(9.7		)	(7.4		)	(5.8		)
Interest capitalized	(24.8		)	(87.4		)	(78.2		)	(67.7		)	(105.8		)	(80.2		)
	1,008.2			(1,227.7		)	(2,365.1		)	1,814.4			1,451.1			781.8
Fixed Charges
Interest on indebtedness, including amortization of deferred loan costs	119.1			216.3			161.4			158.8			123.6			95.9
Estimated interest within rental expense	6.3			19.5			20.8			18.8			17.9			11.5
Fixed charges deducted from income from continuing operations	125.4			235.8			182.2			177.6			141.5			107.4
Interest capitalized	24.8			87.4			78.2			67.7			105.8			80.2
Total	$	150.2		$	323.2		$	260.4		$	245.3		$	247.3		$	187.6
Ratio of Earnings to Fixed Charges	6.7			(a)			(a)			7.4			5.9			4.2

(a) For the year ended December 31, 2015 and December 31, 2014, our earnings were inadequate to cover our fixed charges by $1,550.9 and $2,625.5 million, respectively. Net loss from continuing operations before income taxes of $1,471.2 million and $2,548.8 million for the years ended December 31, 2015 and December 31, 2014 included a non-cash loss on impairment of $2,746.4 million and $4,218.7 million, respectively.

EX-15.1

July 28, 2016

Ensco plc

London, England

Re: Registration Statements on Form S-8 (Nos. 333-174611, 333-58625, 033-40282, 333-97757, 333-125048, 333-156530, 333-181593, 333-204294 and 333-211588) and Form S-3 (No. 333-201532)

With respect to the subject registration statements, we acknowledge our awareness of the use therein of our report dated July 28, 2016 related to our review of interim financial information.

Pursuant to Rule 436 under the Securities Act of 1933 (the Act), such report is not considered part of a registration statement prepared or certified by an independent registered public accounting firm, or a report prepared or certified by an independent registered public accounting firm within the meaning of Sections 7 and 11 of the Act.

Very truly yours,

/s/ KPMG LLP

Houston, Texas

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Carl G. Trowell, certify that:

1. I have reviewed this report on Form 10-Q for the fiscal quarter ending June 30, 2016 of Ensco plc;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated:	July 28, 2016
/s/ Carl G. Trowell
Carl G. Trowell Chief Executive Officer and President

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Jonathan H. Baksht, certify that:

1. I have reviewed this report on Form 10-Q for the fiscal quarter ending June 30, 2016 of Ensco plc;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated:	July 28, 2016
/s/ Jonathan H. Baksht
Jonathan H. Baksht Senior Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Ensco plc (the "Company") on Form 10-Q for the period ending June 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Carl G. Trowell, Chief Executive Officer and President of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002 (the "Act"), that, to my knowledge: 

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 (the "Exchange Act"); and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Carl G. Trowell
Carl G. Trowell Chief Executive Officer and President
Dated:	July 28, 2016

The foregoing certification is being furnished solely pursuant to § 906 of the Act and Rule 13a-14(b) promulgated under the Exchange Act and is not being filed as part of the Report or as a separate disclosure document.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Ensco plc (the "Company") on Form 10-Q for the period ending June 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Jonathan H. Baksht, Senior Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002 (the "Act"), that, to my knowledge: 

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 (the "Exchange Act"); and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Jonathan H. Baksht
Jonathan H. Baksht Senior Vice President and Chief Financial Officer
Dated:	July 28, 2016

The foregoing certification is being furnished solely pursuant to § 906 of the Act and Rule 13a-14(b) promulgated under the Exchange Act and is not being filed as part of the Report or as a separate disclosure document.

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Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Jul. 22, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
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		301,337,497

XML

Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
OPERATING REVENUES	$ 909.6	$ 1,059.0	$ 1,723.6	$ 2,222.9
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	350.2	502.6	713.9	1,020.9
Depreciation	112.4	140.5	225.7	277.6
General and administrative	27.4	29.7	50.8	59.8
Total operating expenses	490.0	672.8	990.4	1,358.3
OPERATING (LOSS) INCOME	419.6	386.2	733.2	864.6
OTHER INCOME (EXPENSE)
Interest income	2.5	3.4	4.8	5.8
Interest expense, net	(54.0)	(51.2)	(119.1)	(103.6)
Other, net	261.4	(7.6)	259.6	(30.2)
Other income (expense), net	209.9	(55.4)	145.3	(128.0)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	629.5	330.8	878.5	736.6
PROVISION FOR INCOME TAXES
Current income tax expense	48.6	43.9	86.7	106.6
Deferred income tax (benefit) expense	(11.9)	14.1	21.4	29.1
Total provision for income taxes	36.7	58.0	108.1	135.7
INCOME FROM CONTINUING OPERATIONS	592.8	272.8	770.4	600.9
DISCONTINUED OPERATIONS
Discontinued operations, net	0.2	10.1	1.1	10.3
NET INCOME	592.6	262.7	769.3	590.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(2.0)	(2.4)	(3.4)	(5.6)
NET INCOME ATTRIBUTABLE TO ENSCO	$ 590.6	$ 260.3	$ 765.9	$ 585.0
EARNINGS PER SHARE - BASIC AND DILUTED
Income (Loss) from Continuing Operations, Per Basic and Diluted Share	$ 2.04	$ 1.15	$ 2.92	$ 2.53
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic and Diluted Share	0.00	(0.04)	0.00	(0.04)
Earnings Per Share, Basic and Diluted	$ 2.04	$ 1.11	$ 2.92	$ 2.49
NET INCOME ATTRIBUTABLE TO ENSCO SHARES - BASIC AND DILUTED	$ 580.8	$ 256.7	$ 753.9	$ 577.7
WEIGHTED-AVERAGE SHARES OUTSTANDING
Basic (in shares)	284.6	232.1	258.5	232.0
Diluted (in shares)	284.6	232.2	258.5	232.1
CASH DIVIDENDS PER SHARE (in dollars per share)	$ 0.010	$ 0.150	$ 0.020	$ 0.300

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Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 592.6	$ 262.7	$ 769.3	$ 590.6
OTHER COMPREHENSIVE (LOSS) INCOME, NET
Net change in fair value of derivatives	(4.1)	8.7	(0.6)	(8.7)
Reclassification of net losses (gains) on derivative instruments from other comprehensive income into net income	2.0	5.1	7.9	10.1
Other	0.1	(1.3)	0.0	1.3
NET OTHER COMPREHENSIVE (LOSS) INCOME	(2.0)	12.5	7.3	2.7
COMPREHENSIVE INCOME	590.6	275.2	776.6	593.3
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(2.0)	(2.4)	(3.4)	(5.6)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$ 588.6	$ 272.8	$ 773.2	$ 587.7

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Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Deferred Tax Liabilities, Net, Noncurrent	$ 8.7	$ 4.4
CURRENT ASSETS
Cash and cash equivalents	790.3	121.3
Short-term Investments	1,010.0	1,180.0
Accounts receivable, net	408.0	582.0
Other	346.4	401.8
Total current assets	2,554.7	2,285.1
PROPERTY AND EQUIPMENT, AT COST	12,877.2	12,719.4
Less accumulated depreciation	1,856.0	1,631.6
Property and equipment, net	11,021.2	11,087.8
OTHER ASSETS, NET	189.1	237.6
TOTAL ASSETS	13,765.0	13,610.5
CURRENT LIABILITIES
Accounts payable - trade	152.3	224.6
Accrued liabilities and other	458.5	550.9
Total current liabilities	610.8	775.5
LONG-TERM DEBT	4,905.6	5,868.6
OTHER LIABILITIES	361.7	449.2
COMMITMENTS AND CONTINGENCIES
ENSCO SHAREHOLDERS' EQUITY
Additional paid-in capital	6,148.9	5,554.5
Retained earnings	1,746.0	985.3
Accumulated other comprehensive income	19.8	12.5
Treasury shares, at cost	(65.8)	(63.8)
Total Ensco shareholders' equity	7,879.9	6,512.9
NONCONTROLLING INTERESTS	7.0	4.3
Total equity	7,886.9	6,517.2
Total liabilities and shareholders' equity	13,765.0	13,610.5
Class A ordinary shares, U.S. [Member]
ENSCO SHAREHOLDERS' EQUITY
Common shares, value	30.9	24.3
Common Class B, Par Value In GBP [Member]
ENSCO SHAREHOLDERS' EQUITY
Common shares, value	$ 0.1	$ 0.1

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Condensed Consolidated Balance Sheets (Parenthetical)	Jun. 30, 2016 £ / shares shares	Jun. 30, 2016 $ / shares shares	Dec. 31, 2015 £ / shares shares	Dec. 31, 2015 $ / shares shares
Treasury shares, shares held (in shares)	7,100,000	7,100,000	7,600,000	7,600,000
Class A ordinary shares, U.S. [Member]
Common stock, par value per share (in dollars per share or pounds sterling per share) | $ / shares		$ 0.1		$ 0.10
Common shares, shares authorized (in shares)	450,000,000.0	450,000,000.0	450,000,000	450,000,000
Common shares, shares issued (in shares)	308,500,000	308,500,000	242,900,000	242,900,000
Common Class B, Par Value In GBP [Member]
Common stock, par value per share (in dollars per share or pounds sterling per share) | £ / shares	£ 1		£ 1
Common shares, shares authorized (in shares)	50,000	50,000	50,000	50,000
Common shares, shares issued (in shares)	50,000	50,000	50,000	50,000

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Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES
Net income	$ 769.3	$ 590.6
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations:
Discontinued operations, net	1.1	10.3
Depreciation expense	225.7	277.6
Deferred income tax (benefit) expense	21.4	29.1
Share-based compensation expense	18.6	23.0
Amortization of Debt Discount (Premium)	(11.2)	(13.0)
Gain (Loss) on Extinguishment of Debt	260.8	(33.5)
Other	(5.5)	(9.9)
Changes in operating assets and liabilities	41.6	(50.2)
Net cash provided by operating activities of continuing operations	800.2	891.0
INVESTING ACTIVITIES
Additions to property and equipment	(209.4)	(913.9)
Maturities of short-term investments	1,032.0	757.3
Payments to Acquire Marketable Securities	(862.0)	(650.0)
Other	7.6	1.1
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(31.8)	(805.5)
FINANCING ACTIVITIES
Proceeds from Issuance of Senior Long-term Debt	0.0	1,078.7
Cash dividends paid	(5.5)	(70.5)
Reduction of long-term borrowings	(684.8)	(1,058.0)
Proceeds from Issuance or Sale of Equity	585.5	0.0
Payments of Debt Issuance Costs	0.0	(10.5)
Payments of Debt Extinguishment Costs	0.0	(30.3)
Other	(1.9)	(6.8)
Net cash provided by (used in) financing activities	(106.7)	(97.4)
DISCONTINUED OPERATIONS
Operating activities	1.4	(4.2)
Investing activities	6.3	(0.6)
Net cash provided by discontinued operations	7.7	(4.8)
Effect of exchange rate changes on cash and cash equivalents	(0.4)	0.2
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	669.0	(16.5)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	121.3	664.8
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 790.3	$ 648.3

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Unaudited Condensed Consolidated Financial Statements

6 Months Ended

Jun. 30, 2016

Unaudited Condensed Consolidated Financial Statements [Abstract]

Unaudited Condensed Consolidated Financial Statements

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, 2015 condensed consolidated balance sheet data were derived from our 2015 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 us 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 and six-month periods ended June 30, 2016 and 2015 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, and the independent registered public accounting firm's liability under Section 11 does not extend to it.

Results of operations for the three-month and six-month periods ended June 30, 2016 are not necessarily indicative of the results of operations that will be realized for the year ending December 31, 2016.  We recommend these condensed consolidated financial statements be read in conjunction with our annual report on Form 10-K for the year ended December 31, 2015 filed with the SEC on February 24, 2016 and our quarterly report on Form 10-Q filed with the SEC on April 28, 2016.

Operating Revenues and Expenses

During the three-month and six-month periods ended June 30, 2016, operating revenues included $185.0 million for the lump-sum consideration received in settlement and release of the ENSCO DS-9 customer's ongoing early termination obligations and $20.0 million for the lump-sum consideration received in settlement of the ENSCO 8503 customer's remaining obligations under the contract. The ENSCO DS-9 contract was terminated for convenience by the customer in July 2015, whereby our customer was obligated to pay us monthly termination fees for two years under the termination provisions of the contract. The ENSCO 8503 contract was originally scheduled to expire in August 2017.

New Accounting Pronouncements

In March 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-09, Compensation — Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("Update 2016-09"), which simplifies several aspects of accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This update is effective for annual and interim periods beginning after December 15, 2016, with early adoption permitted. Transition methods vary for the related amendments. We are currently evaluating the effect that Update 2016-09 will have on our condensed consolidated financial statements and related disclosures.

In February 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-02, Leases (Topic 842): Amendments to the FASB Accounting Standards Codification ("Update 2016-02"), which requires an entity to recognize lease assets and lease liabilities on the balance sheet and to disclose key qualitative and quantitative information about the entity's leasing arrangements. This update is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted. A modified retrospective approach is required. We are currently evaluating the effect that Update 2016-02 will have on our condensed consolidated financial statements and related disclosures.

During 2015, the Financial Accounting Standards Board issued Accounting Standards Update 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs ("Update 2015-03"), as updated by Update 2015-15, Interest - Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements - Amendments to SEC Paragraphs Pursuant to Staff Announcements at June 18, 2015 EITF Meeting ("Update 2015-15"), which require that debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the carrying amount of the related debt liability, consistent with debt discounts. Debt issuance costs related to line-of-credit arrangements may be presented as an asset regardless of whether there are any outstanding borrowings on the arrangement. We adopted Update 2015-03 and Update 2015-15 on a retrospective basis effective January 1, 2016. Accordingly, all debt issuance costs, except for the balance related to our line-of-credit arrangement, were presented as a deduction from the carrying amount of the related debt liability on our condensed consolidated balance sheet for all periods presented. As a result of retrospective application, we reclassified debt issuance costs of $26.5 million on our condensed consolidated balance sheet as of December 31, 2015. There is no impact to the manner in which debt issuance costs are amortized in our consolidated financial statements.

During 2014, the Financial Accounting Standards Board issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606) ("Update 2014-09"), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. During 2015, the Financial Accounting Standards Board voted to delay the effective date one year. Update 2014-09 is now effective for annual and interim periods for fiscal years beginning after December 15, 2017, though companies have an option of adopting the standard for fiscal years beginning after December 15, 2016. During 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations ("Update 2016-08"), Accounting Standards Update 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing ("Update 2016-10") and Account Standards Update 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients ("Update 2016-12"). The amendments in Update 2016-08, 2016-10 and 2016-12 do not change the core principle of Update 2014-09 but instead clarify the implementation guidance on principle versus agent considerations, identify performance obligations and the licensing implementation guidance, and provide narrow-scope improvements, respectively. Update 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP and may be adopted using a retrospective, modified retrospective or prospective with a cumulative catch-up approach. We are currently evaluating the effect that Update 2014-09 will have on our condensed consolidated financial statements and related disclosures.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurements

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 June 30, 2016
Supplemental executive retirement plan assets	$	33.3	$	—		$	—	$	33.3
Total financial assets	$	33.3	$	—		$	—	$	33.3
Derivatives, net	$	—	$	(8.5	)	$	—	$	(8.5	)
Total financial liabilities	$	—	$	(8.5	)	$	—	$	(8.5	)
As of December 31, 2015
Supplemental executive retirement plan assets	$	33.1	$	—		$	—	$	33.1
Total financial assets	$	33.1	$	—		$	—	$	33.1
Derivatives, net	—		(19.7		)	—		(19.7		)
Total financial liabilities	$	—	$	(19.7	)	$	—	$	(19.7	)

Supplemental Executive Retirement Plan Assets

Our supplemental executive retirement plans (the "SERP") are non-qualified plans that provide 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. 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 are generally 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):

	June 30, 2016				December 31, 2015
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
8.50% Senior notes due 2019	$	506.5	$	467.0	$	566.4	$	510.2
6.875% Senior notes due 2020	829.1		747.6		990.9		850.5
4.70% Senior notes due 2021	767.1		653.4		1,476.7		1,254.0
4.50% Senior notes due 2024	618.3		427.0		619.7		417.4
5.20% Senior notes due 2025	662.4		465.2		692.5		505.2
7.20% Debentures due 2027	149.1		115.9		149.1		133.5
7.875% Senior notes due 2040	379.1		210.0		379.8		244.0
5.75% Senior notes due 2044	994.0		620.9		993.5		707.1
Total	$	4,905.6	$	3,707.0	$	5,868.6	$	4,621.9

The estimated fair values of our senior notes and debentures were determined using quoted market prices. The decline in the carrying value of long-term debt instruments from December 31, 2015 to June 30, 2016 is due to debt repurchases as discussed in "Note 6 - Debt." 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 June 30, 2016 and December 31, 2015. Our short-term investments consisted of time deposits with initial maturities in excess of three months but less than one year as of each respective balance sheet date.

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Derivative Instruments

6 Months Ended

Jun. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

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 certain of our subsidiaries are denominated in currencies other than the U.S. dollar. 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 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 derivative fair value depends on the use of the derivative and whether it qualifies for hedge accounting.  Net liabilities of $8.5 million and $19.7 million associated with our foreign currency forward contracts were included on our condensed consolidated balance sheets as of June 30, 2016 and December 31, 2015, 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 on our condensed consolidated balance sheets consisted of the following (in millions):

	Derivative Assets				Derivative Liabilities
	June 30, 2016		December 31, 2015		June 30, 2016		December 31, 2015
Derivatives Designated as Hedging Instruments
Foreign currency forward contracts - current(1)	$	5.0	$	.6	$	12.7	$	20.7
Foreign currency forward contracts - non-current(2)	1.0		.2		1.1		1.5
	6.0		.8		13.8		22.2
Derivatives Not Designated as Hedging Instruments
Foreign currency forward contracts - current(1)	1.5		2.6		2.2		.9
	1.5		2.6		2.2		.9
Total	$	7.5	$	3.4	$	16.0	$	23.1

⁽¹⁾  Derivative assets and liabilities with 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 with 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 and capital expenditures denominated in various currencies. As of June 30, 2016, we had cash flow hedges outstanding to exchange an aggregate $230.3 million for various foreign currencies, including $107.6 million for British pounds, $43.6 million for Australian dollars, $33.8 million for Euros, $28.3 million for Brazilian reais and $17.0 million for other currencies.

Gains and losses, net of tax, on derivatives designated as cash flow hedges included in our condensed consolidated statements of operations and comprehensive income were as follows (in millions):

Three Months Ended June 30, 2016 and 2015

	(Loss) Gain Recognized in Other Comprehensive Income (Effective Portion)					Loss Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)(1)						Gain Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)(2)
	2016			2015		2016			2015			2016		2015
Interest rate lock contracts(3)	$	—		$	—	$	—		$	(.4	)	$	—	$	—
Foreign currency forward contracts(4)	(4.1		)	8.7		(2.0		)	(4.7		)	.8		.3
Total	$	(4.1	)	$	8.7	$	(2.0	)	$	(5.1	)	$	.8	$	.3

Six Months Ended June 30, 2016 and 2015

	Loss Recognized in Other Comprehensive Income (Effective Portion)						Loss Reclassified from AOCI into Income (Effective Portion)(1)						Gain Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)(2)
	2016			2015			2016			2015			2016		2015
Interest rate lock contracts(3)	$	—		$	—		$	(.1	)	$	(.5	)	$	—	$	—
Foreign currency forward contracts(5)	(.6		)	(8.7		)	(7.8		)	(9.6		)	1.9		.2
Total	$	(.6	)	$	(8.7	)	$	(7.9	)	$	(10.1	)	$	1.9	$	.2

⁽¹⁾ Changes in the effective portion of cash flow hedge fair values 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 operations.

⁽³⁾ Losses on interest rate lock derivatives reclassified from AOCI into income were included in interest expense, net, in our condensed consolidated statements of operations.

⁽⁴⁾  During the three-month period ended June 30, 2016, $2.2 million of losses were reclassified from AOCI into contract drilling expense and $200,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations. During the three-month period ended June 30, 2015, $4.9 million of losses were reclassified from AOCI into contract drilling expense and $200,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations.

⁽⁵⁾  During the six-month period ended June 30, 2016, $8.2 million of losses were reclassified from AOCI into contract drilling expense and $400,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations. During the six-month period ended June 30, 2015, $10.0 million of losses were reclassified from AOCI into contract drilling expense and $400,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations.

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 June 30, 2016, we held derivatives not designated as hedging instruments to exchange an aggregate $145.2 million for various foreign currencies, including $78.2 million for euros, $16.9 million for British pounds, $16.0 million for Swiss francs, $12.5 million for Indonesian rupiah, $9.9 million for Brazilian reais and $11.7 million for other currencies.

Net losses of $3.5 million and net gains of $4.5 million associated with our derivatives not designated as hedging instruments were included in other, net, in our condensed consolidated statements of operations for the three-month periods ended June 30, 2016 and 2015, respectively. Net gains of $900,000 and net losses of $9.0 million associated with our derivatives not designated as hedging instruments were included in other, net, in our condensed consolidated statements of operations for the six-month periods ended June 30, 2016 and 2015, respectively. These gains and losses were largely offset by net foreign currency exchange gains and losses during the respective periods.

As of June 30, 2016, the estimated amount of net losses associated with derivative instruments, net of tax, that would be reclassified into earnings during the next twelve months totaled $4.6 million.

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Noncontrolling Interests (Notes)

6 Months Ended

Jun. 30, 2016

Noncontrolling Interest [Abstract]

Noncontrolling Interests

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 in our condensed consolidated statements of operations.

Income from continuing operations attributable to Ensco for the three-month and six-month periods ended June 30, 2016 and 2015 was as follows (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Income from continuing operations	$	592.8		$	272.8		$	770.4		$	600.9
Income from continuing operations attributable to noncontrolling interests	(2.0		)	(2.4		)	(3.4		)	(5.6		)
Income from continuing operations attributable to Ensco	$	590.8		$	270.4		$	767.0		$	595.3

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Earnings Per Share

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Earnings Per Share

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 income from continuing operations attributable to Ensco shares used in our basic and diluted EPS computations for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Income from continuing operations attributable to Ensco	$	590.8		$	270.4		$	767.0		$	595.3
Income from continuing operations allocated to non-vested share awards	(9.8		)	(3.7		)	(12.0		)	(7.4		)
Income from continuing operations attributable to Ensco shares	$	581.0		$	266.7		$	755.0		$	587.9

The following table is a reconciliation of the weighted-average shares used in our basic and diluted EPS computations for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,		Six Months Ended June 30,
	2016	2015	2016	2015
Weighted-average shares - basic	284.6	232.1	258.5	232.0
Potentially dilutive shares	—	.1	—	.1
Weighted-average shares - diluted	284.6	232.2	258.5	232.1

Antidilutive share awards totaling 500,000 and 600,000 were excluded from the computation of diluted EPS for the three-month and six-month periods ended June 30, 2016. Antidilutive share awards totaling 500,000 were excluded from the computation of diluted EPS for the three-month and six-month ended June 30, 2015.

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Debt (Notes)

6 Months Ended

Jun. 30, 2015

Debt Instruments [Abstract]

Debt Disclosure [Text Block]

Debt

Tender Offers and Open Market Repurchases

In March 2016, we launched cash tender offers (the "Tender Offers") to repurchase up to $750.0 million aggregate purchase price of our outstanding debt. The Tender Offers expired on April 1, 2016. We received tenders totaling $860.7 million for an aggregate purchase price of $622.3 million. In April, we used cash on-hand to settle the tendered debt. In addition, during the second quarter, we repurchased $79.5 million of our 4.70% Senior Notes due 2021 for $62.5 million on the open market. Our Tender Offers and open market repurchases during the quarter were as follows (in millions):

	Aggregate Principal Amount Purchased		Aggregate Purchase Price(1)		Discount %
8.50% Senior Notes due 2019	$	45.7	$	38.3	16.2	%
6.875% Senior Notes due 2020	140.1		103.7		26.0	%
4.70% Senior Notes due 2021	722.0		525.1		27.3	%
4.50% Senior Notes due 2024	1.7		0.9		47.1	%
5.20% Senior Notes due 2025	30.7		16.8		45.3	%
Total	$	940.2	$	684.8	27.2	%

⁽¹⁾  Excludes accrued interest paid to holders who tendered in connection with the Tender Offers.

During the second quarter, we recognized a pre-tax gain from debt extinguishment of $260.8 million included in other, net, in our consolidated statements of operations, related to the Tender Offers and open market repurchases, net of discounts, premiums, debt issuance costs and transaction costs.

After giving effect to the Tender Offers and open market repurchases, our next debt maturity is $454.3 million during 2019, followed by $759.9 million, $778.0 million, $623.2 million and $669.3 million during 2020, 2021, 2024 and 2025, respectively.

Revolving Credit

We have a $2.25 billion senior unsecured revolving credit facility with a syndicate of banks to be used for general corporate purposes with a term expiring on September 30, 2019 (the "Credit Facility"). Advances under the Credit Facility bear interest at Base Rate or LIBOR plus an applicable margin rate, depending on our credit ratings. We are required to pay a quarterly commitment fee on the undrawn portion of the $2.25 billion commitment, which is also based on our credit rating.

In February, Moody’s announced a downgrade of our credit rating to B1, which is below investment grade. Following the downgrade, the applicable margin rates are 0.50% per annum for Base Rate advances and 1.50% per annum for LIBOR advances. Our quarterly commitment fee is 0.225% per annum on the undrawn portion of the $2.25 billion commitment. 

In July, Standard & Poor's downgraded our credit rating one notch to BBB-, which maintains our investment grade rating with the rating agency. As previous rating actions resulted in the highest applicable margin rate and commitment fees under our Credit Facility, the July downgrade does not impact our applicable margin rate on borrowings or our quarterly commitment fee. We have limited or no access to the commercial paper market as a result of our current credit ratings.

Our access to credit and capital markets depends on the credit ratings assigned to our debt. There can be no assurance that we will be able to maintain our credit ratings, and any additional actual or anticipated downgrades in our credit ratings, including any announcement that our ratings are under review for a downgrade, could limit our available options when accessing credit and capital markets, or when restructuring or refinancing our debt. In addition, future financings or refinancings may result in higher borrowing costs and require more restrictive terms and covenants.

The Credit Facility requires us to maintain a total debt to total capitalization ratio that is less than or equal to 60%. The Credit Facility also contains customary restrictive covenants, including, among others, prohibitions on creating, incurring or assuming certain debt and liens; entering into certain merger arrangements; selling, leasing, transferring or otherwise disposing of all or substantially all of our assets; making a material change in the nature of the business; and entering into certain transactions with affiliates. We have the right, subject to receipt of commitments from new or existing lenders, to increase the commitments under the Credit Facility to an aggregate amount of up to $2.75 billion and to extend the term of the Credit Facility by one year on up to two occasions.

As of June 30, 2016, we were in compliance in all material respects with our covenants under the Credit Facility. We had no amounts outstanding under the Credit Facility as of June 30, 2016 and December 31, 2015.

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Shareholders' Equity (Notes)

6 Months Ended

Jun. 30, 2016

Equity [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

We filed an automatically effective shelf registration statement on Form S-3 with the U.S. Securities and Exchange Commission on January 15, 2015, which provides us the ability to issue debt securities, equity securities, guarantees and/or units of securities in one or more offerings. The registration statement, as amended, expires in January 2018.

On April 20, 2016, we closed an underwritten public offering of 65,550,000 Class A ordinary shares at $9.25 per share, inclusive of shares purchased under an underwriters' option. We received net proceeds from the offering of $585.5 million. The offering resulted in an increase in Class A ordinary shares and Additional Paid in Capital on our condensed consolidated balance sheet of $6.6 million and $578.9 million, respectively.

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Share-Based Compensation

6 Months Ended

Jun. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

During the quarter ended June 30, 2016, we granted 3.4 million non-vested share units to our employees pursuant to our 2012 Long-Term Incentive Plan, which will be settled in cash upon vesting. Grants of our non-vested share units generally vest at rates of 20% or 33% per year, as determined by a committee or subcommittee of the Board of Directors at the time of grant. The non-vested share units have dividend rights effective on the date of grant. Compensation expense for awards to be settled in cash is remeasured each quarter with a cumulative adjustment to compensation cost during the period based on changes in our share price. The weighted-average grant date fair value for our non-vested share units to be settled in cash that were granted during the quarter ended June 30, 2016 was $9.65.

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Discontinued Operations (Notes)

6 Months Ended

Jun. 30, 2016

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

Discontinued Operations

The following table summarizes loss from discontinued operations, net, for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Revenues	$	—		$	8.1		$	—		$	17.7
Operating expenses	1.6			11.3			2.4			33.2
Operating loss	(1.6		)	(3.2		)	(2.4		)	(15.5		)
Income tax benefit (expense)	0.4			(2.9		)	0.3			9.2
Loss on impairment, net	—			(7.2		)	—			(7.2		)
Gain on disposal of discontinued operations, net	1.0			3.2			1.0			3.2
Loss from discontinued operations, net	$	(.2	)	$	(10.1	)	$	(1.1	)	$	(10.3	)

During the second quarter of 2016, we sold ENSCO DS-2, ENSCO 6000 and ENSCO 58 for scrap value resulting in a net pre-tax gain on sale of $1.2 million included in loss from discontinued operations, net, on our condensed consolidated statements of operations.

ENSCO 7500 and ENSCO 90 remain classified as held-for-sale on our June 30, 2016 condensed consolidated balance sheet and are included in discontinued operations.

For the three-month and six-month periods ended June 30, 2015, loss from discontinued operations, net, included the operating results of ENSCO 93 and ENSCO 58, stacking costs for uncontracted rigs included in discontinued operations, a pre-tax impairment of $7.2 million on ENSCO 6000 and a pre-tax gain of $1.6 million on the sale of ENSCO 5002. A discrete tax benefit of $13.3 million was included in loss from discontinued operations, net, in the first quarter of 2015.

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

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Income Taxes

6 Months Ended

Jun. 30, 2016

Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]

Income Taxes

Income Taxes

Our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2016 was 5.8% and 12.3%, respectively. Excluding the impact of discrete tax items, our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2016 was 19.9% and 24.3%, respectively. Discrete tax items for the three-month period ended June 30, 2016 resulted primarily from the gain on debt extinguishment, income from the ENSCO DS-9 lump-sum consideration and restructuring transactions involving certain of our subsidiaries.

Our consolidated effective income tax rate for the three-month and six-month periods ended June 30, 2015 was 17.5% and 18.4%, respectively. There were no material discrete tax items for the three-month period ended June 30, 2015. Excluding the impact of discrete income tax items for the six-month period ended June 30, 2015, our consolidated effective income tax rate was 17.5%. These discrete tax items were primarily attributable to the recognition of liabilities for unrecognized tax benefits associated with tax positions taken in prior years.

The increase in our consolidated effective tax rate, excluding discrete items, for the three-month and six-month periods ended June 30, 2016 is primarily attributable to an increase in the relative components of our estimated 2016 earnings, excluding discrete items, generated in tax jurisdictions with higher tax rates, partially offset by the impact of restructuring transactions involving certain of our subsidiaries.

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Contingencies

6 Months Ended

Jun. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

Contingencies

nducting our compliance review, we became aware of an internal audit report by Petrobras alleging irregularities in relation to the DSA. Upon learning of the Petrobras internal audit report, our Audit Committee appointed independent counsel to lead an investigation into the alleged irregularities. Further, in June and July 2015, we voluntarily contacted the SEC and the DOJ, respectively, to advise them of this matter and our Audit Committee’s investigation. Independent counsel, under the direction of our Audit Committee, has substantially completed its investigation by reviewing and analyzing available documents and correspondence and interviewing current and former employees involved in the DSA negotiations and the negotiation of the ENSCO DS-5 construction contract with SHI (the "DS-5 Construction Contract").

To date, our Audit Committee has found no evidence that Pride or Ensco or any of their current or former employees were aware of or involved in any wrongdoing, and our Audit Committee has found no evidence linking Ensco or Pride to any illegal acts committed by our former marketing consultant, who provided services to Pride and Ensco in connection with the DSA. Independent counsel has continued to provide the SEC and DOJ with updates throughout the investigation, including detailed briefings regarding its investigation and findings. On December 21, 2015, we entered into a one-year tolling agreement with the DOJ. On March 7, 2016, we entered into a one-year tolling agreement with the SEC.

Subsequent to initiating our Audit Committee investigation, Brazilian court documents connected to the prosecution of former Petrobras directors and employees as well as certain other third parties, including our former marketing consultant, referenced the alleged irregularities cited in the Petrobras internal audit report. Our former marketing consultant has entered into a plea agreement with the Brazilian authorities. On January 10, 2016, Brazilian authorities filed an indictment against a former Petrobras director. This indictment states that the former Petrobras director received bribes paid out of proceeds from a brokerage agreement entered into for purposes of intermediating a drillship construction contract between SHI and Pride, which we believe to be the DS-5 Construction Contract. The parties to the brokerage agreement were a company affiliated with a person acting on behalf of the former Petrobras director, a company affiliated with our former marketing consultant, and SHI. The indictment alleges that amounts paid by SHI under the brokerage agreement ultimately were used to pay bribes to the former Petrobras director. The indictment does not state that Pride or Ensco or any of their current or former employees were involved in the bribery scheme or had any knowledge of the bribery scheme.    

On January 4, 2016, we received a notice from Petrobras declaring the DSA void effective immediately. Petrobras’ notice alleges that our former marketing consultant both received and procured improper payments from SHI for employees of Petrobras and that Pride had knowledge of this activity and assisted in the procurement of and/or facilitated these improper payments. We disagree with Petrobras’ allegations. See "—DSA Dispute" below for additional information.

Outside of Petrobras’ allegations, we have not been contacted by any Brazil governmental authority regarding alleged wrongdoing by Pride or Ensco or any of their current or former employees related to this matter. We cannot predict whether any U.S., Brazilian or other governmental authority will seek to investigate Pride's involvement in this matter, or if a proceeding were opened, the scope or ultimate outcome of any such investigation. If the SEC or DOJ determines that violations of the FCPA have occurred, or if any governmental authority determines that we have violated applicable anti-bribery laws, they could seek civil and criminal sanctions, including monetary penalties, against us, as well as changes to our business practices and compliance programs, any of which could have a material adverse effect on our business and financial condition. Although our internal investigation is substantially complete, we cannot predict whether any additional allegations will be made or whether any additional facts relevant to the investigation will be uncovered during the course of the investigation and what impact those allegations and additional facts will have on the timing or conclusions of the investigation. Our Audit Committee will examine any such additional allegations and additional facts and the circumstances surrounding them.

DSA Dispute

As described above, on January 4, 2016, Petrobras sent a notice to us declaring the DSA void effective immediately, reserving its rights and stating its intention to seek any restitution to which it may be entitled. We disagree with Petrobras’ declaration that the DSA is void. We believe that Petrobras has repudiated the DSA and have therefore accepted the DSA as terminated on April 8, 2016 (the "Termination Date"). At this time, we cannot reasonably determine the validity of Petrobras' claim or the range of our potential exposure, if any. As a result, there can be no assurance as to how this dispute will ultimately be resolved.

We did not recognize revenue for amounts owed to us under the DSA from the beginning of the fourth quarter of 2015 through the Termination Date, as we concluded that collectability of these amounts was not reasonably assured. Additionally, our receivables from Petrobras related to the DSA from prior to the fourth quarter of 2015 are fully reserved on our condensed consolidated balance sheet as of June 30, 2016. We have initiated arbitration proceedings in the U.K. against Petrobras seeking payment of all amounts owed to us under the DSA, in addition to any other amounts to which we are entitled, and intend to vigorously pursue our claims. Petrobras subsequently filed a counterclaim seeking restitution of certain sums paid under the DSA less value received by Petrobras under the DSA. We have also initiated separate arbitration proceedings in the U.K. against SHI for any losses we have incurred in connection with the foregoing. There can be no assurance as to how these arbitration proceedings will ultimately be resolved.

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 46 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.

During 2013, we reached an agreement in principle with 58 plaintiffs to settle lawsuits filed in Mississippi for a nominal amount. A special master reviewed all 58 cases and made an allocation of settlement funds among the parties.  The District Court Judge reviewed the allocations and accepted the special master’s recommendations and approved the settlements.  The settlement documents for most of the individual plaintiffs have been processed, and the cases dismissed. The settlement documents for approximately 13 individual plaintiffs continue to be processed.

We intend to vigorously defend against the remaining 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 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.

   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.

In the ordinary course of business with customers and others, we have entered into letters of credit and surety bonds to guarantee our performance as it relates to our drilling contracts, contract bidding, customs duties, tax appeals and other obligations in various jurisdictions. Letters of credit and surety bonds outstanding as of June 30, 2016 totaled $72.3 million and were issued under facilities provided by various banks and other financial institutions. Obligations under these letters of credit and surety bonds are not normally called as we typically comply with the underlying performance requirement. As of June 30, 2016, we were not required to make collateral deposits with respect to these agreements.

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Segment Information

6 Months Ended

Jun. 30, 2016

Segment Reporting Information, Revenue for Reportable Segment [Abstract]

Segment Information

Segment Information

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

Segment information for the three-month and six-month periods ended 2016 and 2015 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 are included in "Reconciling Items." We measure segment assets as property and equipment.

Three Months Ended June 30, 2016

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	636.4	$	251.3	$	21.9	$	909.6	$	—		$	909.6
Operating expenses
Contract drilling (exclusive of depreciation)	208.6		122.3		19.3		350.2		—			350.2
Depreciation	77.8		30.1		—		107.9		4.5			112.4
General and administrative	—		—		—		—		27.4			27.4
Operating income	$	350.0	$	98.9	$	2.6	$	451.5	$	(31.9	)	$	419.6
Property and equipment, net	$	8,414.1	$	2,543.0	$	—	$	10,957.1	$	64.1		$	11,021.2

Three Months Ended June 30, 2015

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	634.3	$	384.1	$	40.6	$	1,059.0	$	—		$	1,059.0
Operating expenses
Contract drilling (exclusive of depreciation)	277.7		192.7		32.2		502.6		—			502.6
Depreciation	94.4		43.6		—		138.0		2.5			140.5
General and administrative	—		—		—		—		29.7			29.7
Operating income	$	262.2	$	147.8	$	8.4	$	418.4	$	(32.2	)	$	386.2
Property and equipment, net	$	9,870.7	$	3,223.4	$	—	$	13,094.1	$	75.8		$	13,169.9

Six Months Ended June 30, 2016

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	1,149.0	$	529.2	$	45.4	$	1,723.6	$	—		$	1,723.6
Operating expenses
Contract drilling (exclusive of depreciation)	419.9		256.8		37.2		713.9		—			713.9
Depreciation	158.1		58.7		—		216.8		8.9			225.7
General and administrative	—		—		—		—		50.8			50.8
Operating income	$	571.0	$	213.7	$	8.2	$	792.9	$	(59.7	)	$	733.2
Property and equipment, net	$	8,414.1	$	2,543.0	$	—	$	10,957.1	$	64.1		$	11,021.2

Six Months Ended June 30, 2015

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	1,329.3	$	812.4	$	81.2	$	2,222.9	$	—		$	2,222.9
Operating expenses
Contract drilling (exclusive of depreciation)	571.2		384.2		65.5		1,020.9		—			1,020.9
Depreciation	187.4		85.1		—		272.5		5.1			277.6
General and administrative	—		—		—		—		59.8			59.8
Operating income	$	570.7	$	343.1	$	15.7	$	929.5	$	(64.9	)	$	864.6
Property and equipment, net	$	9,870.7	$	3,223.4	$	—	$	13,094.1	$	75.8		$	13,169.9

Information about Geographic Areas

As of June 30, 2016, the geographic distribution of our drilling rigs by reportable segment was as follows:

	Floaters	Jackups	Total(1)
North & South America	9	7	16
Europe & Mediterranean	4	11	15
Middle East & Africa	2	11	13
Asia & Pacific Rim	4	7	11
Asia & Pacific Rim (under construction)	1	1	2
Middle East & Africa (under construction)	—	2	2
Held-for-sale	1	1	2
Total	21	40	61

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

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Supplemental Financial Information

6 Months Ended

Jun. 30, 2016

Supplemental Financial Information [Abstract]

Supplemental Financial Information

Supplemental Financial Information

Consolidated Balance Sheet Information

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

	June 30, 2016			December 31, 2015
Trade	$	415.8		$	595.0
Other	16.7			16.3
	432.5			611.3
Allowance for doubtful accounts	(24.5		)	(29.3		)
	$	408.0		$	582.0

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

	June 30, 2016		December 31, 2015
Inventory	$	231.4	$	235.3
Prepaid taxes	50.0		73.5
Deferred costs	40.2		52.1
Prepaid expenses	8.0		20.5
Assets held-for-sale	1.8		5.5
Other	15.0		14.9
	$	346.4	$	401.8

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

	June 30, 2016		December 31, 2015
Deferred tax assets	$	69.8	$	94.8
Deferred costs	42.6		55.8
Prepaid taxes on intercompany transfers of property	33.8		37.1
Supplemental executive retirement plan assets	33.3		33.1
Other	9.6		16.8
	$	189.1	$	237.6

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

	June 30, 2016		December 31, 2015
Deferred revenue	$	172.9	$	197.2
Personnel costs	104.2		161.6
Taxes	79.6		70.8
Accrued interest	74.3		88.4
Derivative liabilities	14.9		21.6
Other	12.6		11.3
	$	458.5	$	550.9

Other liabilities consisted of the following (in millions):

	June 30, 2016		December 31, 2015
Unrecognized tax benefits (inclusive of interest and penalties)	$	153.4	$	149.7
Deferred revenue	143.5		218.6
Supplemental executive retirement plan liabilities	34.5		34.4
Personnel costs	11.4		17.7
Deferred tax liabilities	8.7		4.4
Other	10.2		24.4
	$	361.7	$	449.2

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

	June 30, 2016			December 31, 2015
Currency translation adjustment	$	7.6		$	7.8
Derivative instruments	13.9			6.6
Other	(1.7		)	(1.9		)
	$	19.8		$	12.5

Concentration of Risk

We are exposed to credit risk relating to our receivables from customers, our cash and cash equivalents, our short-term 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 generally have been within management's expectations. We mitigate our credit risk relating to cash and cash equivalents by focusing on diversification and quality of instruments. Cash equivalents consist of a portfolio of high-grade instruments. Custody of cash and cash equivalents 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 derivative counterparties through a variety of techniques, including transacting with multiple, high-quality financial institutions, thereby limiting our exposure to individual counterparties and by entering into International Swaps and Derivatives Association, Inc. (“ISDA”) Master Agreements, which include provisions for a legally enforceable master netting agreement, with our derivative counterparties. The terms of the ISDA agreements may also include credit support requirements, cross default provisions, termination events or set-off provisions.  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.  See "Note 3 - Derivative Instruments" for additional information on our derivatives.

Consolidated revenues by customer for the three-month and six-month periods ended June 30, 2016 and 2015 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
ConocoPhillips(1)	23	%	3	%	15	%	3	%
Total(2)	13	%	10	%	14	%	9	%
BP (3)	10	%	16	%	12	%	14	%
Petrobras(2)	9	%	15	%	12	%	13	%
Other	45	%	56	%	47	%	61	%
	100	%	100	%	100	%	100	%

⁽¹⁾  During the three-month and six-month periods ended June 30, 2016, excluding the impact of the lump-sum termination payment of $185.0 million for ENSCO DS-9, revenues from ConocoPhillips represented 3% and 4%, respectively, of our consolidated revenues.

⁽²⁾  During the three-month and six-month periods ended June 30, 2016 and 2015, all revenues were attributable to our Floater segment.

⁽³⁾  During the three-month periods ended June 30, 2016 and 2015, 75% and 79% of the revenues provided by BP, respectively, were attributable to our Floaters segment. During the six-month periods ended June 30, 2016 and 2015, 76% and 82% of the revenues provided by BP, respectively, were attributable to our Floaters segment.

Consolidated revenues by region for the three-month and six-month periods ended June 30, 2016 and 2015 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
U.S. Gulf of Mexico(1)	$	304.5	$	271.0	$	464.7	$	609.8
Angola(2)	132.4		182.4		268.6		351.7
Brazil(3)	81.7		115.7		202.7		238.4
United Kingdom(4)	69.7		104.3		143.5		224.9
Other	321.3		385.6		644.1		798.1
	$	909.6	$	1,059.0	$	1,723.6	$	2,222.9

⁽¹⁾  During the three-month periods ended June 30, 2016 and 2015, 92% and 83% of the revenues earned in the U.S. Gulf of Mexico, respectively, were attributable to our Floaters segment. During the six-month period ended June 30, 2016 and 2015, 89% and 84% of the revenues earned in the U.S. Gulf of Mexico, respectively, were attributable to our Floaters segment. Revenue recognized during the three-month and six-month periods ended June 30, 2016 related to the U.S. Gulf of Mexico included termination fees totaling $205.0 million as discussed in "Note 1 - Unaudited Condensed Consolidated Financial Statements." ENSCO DS-9 termination revenues were attributed to the U.S. Gulf of Mexico as the related drilling contract was intended for operations in that region.

⁽²⁾  During the three-month periods ended June 30, 2016 and 2015, 88% and 91% of the revenues earned in Angola, respectively, were attributable to our Floaters segment. During the six-month period ended June 30, 2016 and 2015, 87% and 90% of the revenues earned in Angola, respectively, were attributable to our Floaters segment.

⁽³⁾  During the three-month and six-month periods ended June 30, 2016 and 2015, all revenues were attributable to our Floaters segment.

⁽⁴⁾  During the three-month and six-month periods ended June 30, 2016 and 2015, all revenues were attributable to our Jackups segment.

XML

Guarantee Of Registered Securities

6 Months Ended

Jun. 30, 2016

Guarantees [Abstract]

Guarantee Of Registered Securities

Guarantee of Registered Securities

Ensco plc provides for the full and unconditional guarantee of Pride International, Inc.'s, a wholly-owned subsidiary of Ensco plc, 8.5% 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 of $1.5 billion as of June 30, 2016. The Ensco plc guarantee provides for the unconditional and irrevocable guarantee of the prompt payment, when due, of any amount owed to the note holders.

Ensco plc is also a full and unconditional guarantor of the 7.2% debentures due 2027 issued by ENSCO International Incorporated, a wholly-owned subsidiary of Ensco plc, during 1997, which had an aggregate outstanding principal balance of $150.0 million as of June 30, 2016.

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 operations for the three-month and six-month periods ended June 30, 2016 and 2015; the unaudited condensed consolidating statements of comprehensive income for the three-month and six-month periods ended June 30, 2016 and 2015; the condensed consolidating balance sheets as of June 30, 2016 (unaudited) and December 31, 2015; and the unaudited condensed consolidating statements of cash flows for the six-month periods ended June 30, 2016 and 2015, in accordance with Rule 3-10 of Regulation S-X.

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Three Months Ended June 30, 2016 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	7.6		$	36.5		$	—		$	937.4		$	(71.9	)	$	909.6
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	6.7			36.4			—			379.0			(71.9		)	350.2
Depreciation	—			4.4			—			108.0			—			112.4
General and administrative	10.5			—			—			16.9			—			27.4
OPERATING (LOSS) INCOME	(9.6		)	(4.3		)	—			433.5			—			419.6
OTHER INCOME (EXPENSE), NET	175.8			(8.3		)	(18.8		)	1.3			59.9			209.9
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	166.2			(12.6		)	(18.8		)	434.8			59.9			629.5
INCOME TAX PROVISION	—			(15.6		)	—			52.3			—			36.7
DISCONTINUED OPERATIONS, NET	—			—			—			(.2		)	—			(.2		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	424.4			20.0			10.2			—			(454.6		)	—
NET INCOME (LOSS)	590.6			23.0			(8.6		)	382.3			(394.7		)	592.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.0		)	—			(2.0		)
NET INCOME (LOSS)ATTRIBUTABLE TO ENSCO	$	590.6		$	23.0		$	(8.6	)	$	380.3		$	(394.7	)	$	590.6

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Three Months Ended June 30, 2015 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	8.7		$	34.5		$	—		$	1,086.6		$	(70.8	)	$	1,059.0
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	6.3			34.5			—			532.6			(70.8		)	502.6
Depreciation	—			2.4			—			138.1			—			140.5
General and administrative	13.7			—			—			16.0			—			29.7
OPERATING (LOSS) INCOME	(11.3		)	(2.4		)	—			399.9			—			386.2
OTHER (EXPENSE) INCOME, NET	(36.3		)	2.4			(15.2		)	(6.3		)	—			(55.4		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(47.6		)	—			(15.2		)	393.6			—			330.8
INCOME TAX PROVISION	—			14.1			—			43.9			—			58.0
DISCONTINUED OPERATIONS, NET	—			—			—			(10.1		)	—			(10.1		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	307.9			47.5			71.4			—			(426.8		)	—
NET INCOME	260.3			33.4			56.2			339.6			(426.8		)	262.7
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.4		)	—			(2.4		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	260.3		$	33.4		$	56.2		$	337.2		$	(426.8	)	$	260.3

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Six Months Ended June 30, 2016 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	14.8		$	72.1		$	—		$	1,780.7		$	(144.0	)	$	1,723.6
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	13.9			72.1			—			771.9			(144.0		)	713.9
Depreciation	—			8.7			—			217.0			—			225.7
General and administrative	16.7			.1			—			34.0			—			50.8
OPERATING (LOSS) INCOME	(15.8		)	(8.8		)	—			757.8			—			733.2
OTHER INCOME (EXPENSE), NET	139.0			(6.7		)	(37.9		)	(9.0		)	59.9			145.3
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	123.2			(15.5		)	(37.9		)	748.8			59.9			878.5
INCOME TAX PROVISION	—			15.4			—			92.7			—			108.1
DISCONTINUED OPERATIONS, NET	—			—			—			(1.1		)	—			(1.1		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	642.7			53.5			63.8			—			(760.0		)	—
NET INCOME	765.9			22.6			25.9			655.0			(700.1		)	769.3
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(3.4		)	—			(3.4		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	765.9		$	22.6		$	25.9		$	651.6		$	(700.1	)	$	765.9

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Six Months Ended June 30, 2015 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	17.4		$	69.3		$	—		$	2,278.2		$	(142.0	)	$	2,222.9
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	13.1			69.3			—			1,080.5			(142.0		)	1,020.9
Depreciation	.1			4.9			—			272.6			—			277.6
General and administrative	27.0			.1			—			32.7			—			59.8
OPERATING (LOSS) INCOME	(22.8		)	(5.0		)	—			892.4			—			864.6
OTHER (EXPENSE) INCOME, NET	(96.2		)	(14.4		)	(31.1		)	13.7			—			(128.0		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(119.0		)	(19.4		)	(31.1		)	906.1			—			736.6
INCOME TAX PROVISION	—			27.9			—			107.8			—			135.7
DISCONTINUED OPERATIONS, NET	—			—			—			(10.3		)	—			(10.3		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	704.0			92.7			135.3			—			(932.0		)	—
NET INCOME	585.0			45.4			104.2			788.0			(932.0		)	590.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(5.6		)	—			(5.6		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	585.0		$	45.4		$	104.2		$	782.4		$	(932.0	)	$	585.0

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Three Months Ended June 30, 2016

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME (LOSS)	$	590.6	$	23.0		$	(8.6	)	$	382.3		$	(394.7	)	$	592.6
OTHER COMPREHENSIVE INCOME (LOSS), NET
Net change in derivative fair value	—		(4.1		)	—			—			—			(4.1		)
Reclassification of net losses on derivative instruments from other comprehensive income into net income	—		2.0			—			—			—			2.0
Other	—		—			—			.1			—			.1
NET OTHER COMPREHENSIVE (LOSS) INCOME	—		(2.1		)	—			.1			—			(2.0		)
COMPREHENSIVE INCOME (LOSS)	590.6		20.9			(8.6		)	382.4			(394.7		)	590.6
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—			(2.0		)	—			(2.0		)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO ENSCO	$	590.6	$	20.9		$	(8.6	)	$	380.4		$	(394.7	)	$	588.6

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Three Months Ended June 30, 2015

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	260.3	$	33.4	$	56.2	$	339.6		$	(426.8	)	$	262.7
OTHER COMPREHENSIVE INCOME (LOSS), NET
Net change in derivative fair value	—		8.7		—		—			—			8.7
Reclassification of net gains on derivative instruments from other comprehensive income into net income	—		5.1		—		—			—			5.1
Other	—		—		—		(1.3		)	—			(1.3		)
NET OTHER COMPREHENSIVE INCOME (LOSS)	—		13.8		—		(1.3		)	—			12.5
COMPREHENSIVE INCOME	260.3		47.2		56.2		338.3			(426.8		)	275.2
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—		—		(2.4		)	—			(2.4		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	260.3	$	47.2	$	56.2	$	335.9		$	(426.8	)	$	272.8

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Six Months Ended June 30, 2016

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	765.9	$	22.6		$	25.9	$	655.0		$	(700.1	)	$	769.3
OTHER COMPREHENSIVE INCOME, NET
Net change in derivative fair value	—		(.6		)	—		—			—			(.6		)
Reclassification of net losses on derivative instruments from other comprehensive income into net income	—		7.9			—		—			—			7.9
Other	—		—			—		—			—			—
NET OTHER COMPREHENSIVE INCOME	—		7.3			—		—			—			7.3
COMPREHENSIVE INCOME	765.9		29.9			25.9		655.0			(700.1		)	776.6
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—		(3.4		)	—			(3.4		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	765.9	$	29.9		$	25.9	$	651.6		$	(700.1	)	$	773.2

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Six Months Ended June 30, 2015

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	585.0	$	45.4		$	104.2	$	788.0		$	(932.0	)	$	590.6
OTHER COMPREHENSIVE INCOME, NET
Net change in derivative fair value	—		(8.7		)	—		—			—			(8.7		)
Reclassification of net gains on derivative instruments from other comprehensive income into net income	—		10.1			—		—			—			10.1
Other	—		—			—		1.3			—			1.3
NET OTHER COMPREHENSIVE INCOME	—		1.4			—		1.3			—			2.7
COMPREHENSIVE INCOME	585.0		46.8			104.2		789.3			(932.0		)	593.3
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—		(5.6		)	—			(5.6		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	585.0	$	46.8		$	104.2	$	783.7		$	(932.0	)	$	587.7

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS June 30, 2016 (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	$	712.8	$	—	$	26.1		$	51.4	$	—		$	790.3
Short-term investments	1,010.0		—		—			—		—			1,010.0
Accounts receivable, net	5.2		—		—			402.8		—			408.0
Accounts receivable from affiliates	245.7		637.7		—			565.8		(1,449.2		)	—
Other	.1		10.1		—			336.2		—			346.4
Total current assets	1,973.8		647.8		26.1			1,356.2		(1,449.2		)	2,554.7
PROPERTY AND EQUIPMENT, AT COST	1.8		118.8		—			12,756.6		—			12,877.2
Less accumulated depreciation	1.8		55.7		—			1,798.5		—			1,856.0
Property and equipment, net	—		63.1		—			10,958.1		—			11,021.2
DUE FROM AFFILIATES	1,428.5		5,069.7		2,043.1			6,731.5		(15,272.8		)	—
INVESTMENTS IN AFFILIATES	8,412.1		1,717.2		—			—		(10,129.3		)	—
OTHER ASSETS, NET	—		40.0		—			290.5		(141.4		)	189.1
	$	11,814.4	$	7,537.8	$	2,069.2		$	19,336.3	$	(26,992.7	)	$	13,765.0
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	48.0	$	32.1	$	30.9		$	499.8	$	—		$	610.8
Accounts payable to affiliates	46.4		591.2		3.8			807.8		(1,449.2		)	$	—
Total current liabilities	94.4		623.3		34.7			1,307.6		(1,449.2		)	610.8
DUE TO AFFILIATES	791.1		5,391.6		2,056.0			7,034.1		(15,272.8		)	—
LONG-TERM DEBT	3,041.8		149.1		1,714.7			—		—			4,905.6
INVESTMENTS IN AFFILIATES	—		—		1,215.2					(1,215.2		)	—
OTHER LIABILITIES	—		150.2		—			352.9		(141.4		)	361.7
ENSCO SHAREHOLDERS' EQUITY	7,887.1		1,223.6		(2,951.4		)	10,634.7		(8,914.1		)	7,879.9
NONCONTROLLING INTERESTS	—		—		—			7.0		—			7.0
Total equity	7,887.1		1,223.6		(2,951.4		)	10,641.7		(8,914.1		)	7,886.9
	$	11,814.4	$	7,537.8	$	2,069.2		$	19,336.3	$	(26,992.7	)	$	13,765.0

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 (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	$	94.0	$	—	$	2.0		$	25.3	$	—		$	121.3
Short-term investments	1,180.0		—		—			—		—			$	1,180.0
Accounts receivable, net	1.2		—		—			580.8		—			582.0
Accounts receivable from affiliates	808.7		237.3		—			148.1		(1,194.1		)	—
Other	.2		229.3		—			172.3		—			401.8
Total current assets	2,084.1		466.6		2.0			926.5		(1,194.1		)	2,285.1
PROPERTY AND EQUIPMENT, AT COST	1.8		117.5		—			12,600.1		—			12,719.4
Less accumulated depreciation	1.8		47.7		—			1,582.1		—			1,631.6
Property and equipment, net	—		69.8		—			11,018.0		—			11,087.8
DUE FROM AFFILIATES	1,303.7		5,270.0		2,035.5			6,869.9		(15,479.1		)	—
INVESTMENTS IN AFFILIATES	7,743.8		—		—			—		(7,743.8		)	—
OTHER ASSETS, NET	—		43.1		—			324.9		(130.4		)	237.6
	$	11,131.6	$	5,849.5	$	2,037.5		$	19,139.3	$	(24,547.4	)	$	13,610.5
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	60.7	$	69.6	$	34.8		$	610.4	$	—		$	775.5
Accounts payable to affiliates	19.4		176.3		—			998.4		(1,194.1		)	—
Total current liabilities	80.1		245.9		34.8			1,608.8		(1,194.1		)	775.5
DUE TO AFFILIATES	751.9		4,354.3		1,763.7			8,609.2		(15,479.1		)	—
LONG-TERM DEBT	3,782.4		149.0		1,937.2			—		—			5,868.6
INVESTMENTS IN AFFILIAITES	—		442.0		1,319.3			—		(1,761.3		)	—
OTHER LIABILITIES	—		135.7		—			443.9		(130.4		)	449.2
ENSCO SHAREHOLDERS' EQUITY	6,517.2		522.6		(3,017.5		)	8,473.1		(5,982.5		)	6,512.9
NONCONTROLLING INTERESTS	—		—		—			4.3		—			4.3
Total equity	6,517.2		522.6		(3,017.5		)	8,477.4		(5,982.5		)	6,517.2
	$	11,131.6	$	5,849.5	$	2,037.5		$	19,139.3	$	(24,547.4	)	$	13,610.5

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Six Months Ended June 30, 2016 (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	$	(83.4	)	$	130.8		$	(60.4	)	$	813.2		$	—		$	800.2
INVESTING ACTIVITIES
Maturities of short-term investments	1,032.0			—			—			—			—			1,032.0
Purchases of short-term investments	(862.0		)	—			—			—			—			(862.0		)
Additions to property and equipment	—			—			—			(209.4		)	—			(209.4		)
Purchase of affiliate debt	(142.0		)	—			—			—			142.0			—
Other	—			—			—			7.6			—			7.6
Net cash provided by (used in) investing activities of continuing operations	28.0			—			—			(201.8		)	142.0			(31.8		)
FINANCING ACTIVITIES
Reduction of long-term borrowings	(542.8		)	—			—			—			(142.0		)	(684.8		)
Proceeds from equity issuance	585.5			—			—			—			—			585.5
Cash dividends paid	(5.5		)	—			—			—			—			(5.5		)
Advances from (to) affiliates	638.9			(130.8		)	84.5			(592.6		)	—			—
Other	(1.9		)	—			—			—			—			(1.9		)
Net cash provided by (used in) financing activities	674.2			(130.8		)	84.5			(592.6		)	(142.0		)	(106.7		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—			1.4			—			1.4
Investing activities	—			—			—			6.3			—			6.3
Net cash used in discontinued operations	—			—			—			7.7			—			7.7
Effect of exchange rate changes on cash and cash equivalents	—			—			—			(.4		)	—			(.4		)
NET INCREASE IN CASH AND CASH EQUIVALENTS	618.8			—			24.1			26.1			—			669.0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	94.0			—			2.0			25.3			—			121.3
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	712.8		$	—		$	26.1		$	51.4		$	—		$	790.3

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Six Months Ended June 30, 2015 (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	$	(66.2	)	$	(19.7	)	$	(49.9	)	$	1,026.8		$	—	$	891.0
INVESTING ACTIVITIES
Additions to property and equipment	—			(5.1		)	—			(908.8		)	—		(913.9		)
Maturities of short-term investments	712.0			—			—			45.3					757.3
Purchases of short-term investments	(650.0		)	—			—			—			—		(650.0		)
Other	—			—			—			1.1			—		1.1
Net cash provided by (used in) investing activities of continuing operations	62			(5.1		)	—			(862.4		)	—		(805.5		)
FINANCING ACTIVITIES
Proceeds from issuance of senior notes	1,078.7			—			—			—			—		1,078.7
Reduction of long-term borrowings	(998.3		)	—			—			(59.7		)	—		(1,058.0		)
Cash dividends paid	(70.5		)	—			—			—			—		(70.5		)
Premium paid on redemption of debt	(27.2		)	—			—			(3.1		)	—		(30.3		)
Debt financing costs	(10.5		)	—			—			—			—		(10.5		)
Advances from (to) affiliates	88.2			24.8			63.5			(176.5		)	—		—
Other	(9.0		)	—			—			2.2			—		(6.8		)
Net cash provided by (used in) financing activities	51.4			24.8			63.5			(237.1		)	—		(97.4		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—			(4.2		)	—		(4.2		)
Investing activities	—			—			—			(0.6		)	—		(0.6		)
Net cash used in discontinued operations	—			—			—			(4.8		)	—		(4.8		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			.2			—		.2
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	47.2			—			13.6			(77.3		)	—		(16.5		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	287.4			—			90.8			286.6			—		664.8
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	334.6		$	—		$	104.4		$	209.3		$	—	$	648.3

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Unaudited Condensed Consolidated Financial Statements (Policies)

6 Months Ended

Jun. 30, 2016

Unaudited Condensed Consolidated Financial Statements [Abstract]

New Accounting Pronouncements

New Accounting Pronouncements

In March 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-09, Compensation — Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("Update 2016-09"), which simplifies several aspects of accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This update is effective for annual and interim periods beginning after December 15, 2016, with early adoption permitted. Transition methods vary for the related amendments. We are currently evaluating the effect that Update 2016-09 will have on our condensed consolidated financial statements and related disclosures.

In February 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-02, Leases (Topic 842): Amendments to the FASB Accounting Standards Codification ("Update 2016-02"), which requires an entity to recognize lease assets and lease liabilities on the balance sheet and to disclose key qualitative and quantitative information about the entity's leasing arrangements. This update is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted. A modified retrospective approach is required. We are currently evaluating the effect that Update 2016-02 will have on our condensed consolidated financial statements and related disclosures.

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

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 June 30, 2016
Supplemental executive retirement plan assets	$	33.3	$	—		$	—	$	33.3
Total financial assets	$	33.3	$	—		$	—	$	33.3
Derivatives, net	$	—	$	(8.5	)	$	—	$	(8.5	)
Total financial liabilities	$	—	$	(8.5	)	$	—	$	(8.5	)
As of December 31, 2015
Supplemental executive retirement plan assets	$	33.1	$	—		$	—	$	33.1
Total financial assets	$	33.1	$	—		$	—	$	33.1
Derivatives, net	—		(19.7		)	—		(19.7		)
Total financial liabilities	$	—	$	(19.7	)	$	—	$	(19.7	)

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):

	June 30, 2016				December 31, 2015
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
8.50% Senior notes due 2019	$	506.5	$	467.0	$	566.4	$	510.2
6.875% Senior notes due 2020	829.1		747.6		990.9		850.5
4.70% Senior notes due 2021	767.1		653.4		1,476.7		1,254.0
4.50% Senior notes due 2024	618.3		427.0		619.7		417.4
5.20% Senior notes due 2025	662.4		465.2		692.5		505.2
7.20% Debentures due 2027	149.1		115.9		149.1		133.5
7.875% Senior notes due 2040	379.1		210.0		379.8		244.0
5.75% Senior notes due 2044	994.0		620.9		993.5		707.1
Total	$	4,905.6	$	3,707.0	$	5,868.6	$	4,621.9

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Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule Of Derivatives At Fair Value

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

	Derivative Assets				Derivative Liabilities
	June 30, 2016		December 31, 2015		June 30, 2016		December 31, 2015
Derivatives Designated as Hedging Instruments
Foreign currency forward contracts - current(1)	$	5.0	$	.6	$	12.7	$	20.7
Foreign currency forward contracts - non-current(2)	1.0		.2		1.1		1.5
	6.0		.8		13.8		22.2
Derivatives Not Designated as Hedging Instruments
Foreign currency forward contracts - current(1)	1.5		2.6		2.2		.9
	1.5		2.6		2.2		.9
Total	$	7.5	$	3.4	$	16.0	$	23.1

⁽¹⁾  Derivative assets and liabilities with 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 with 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 operations and comprehensive income were as follows (in millions):

Three Months Ended June 30, 2016 and 2015

	(Loss) Gain Recognized in Other Comprehensive Income (Effective Portion)					Loss Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)(1)						Gain Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)(2)
	2016			2015		2016			2015			2016		2015
Interest rate lock contracts(3)	$	—		$	—	$	—		$	(.4	)	$	—	$	—
Foreign currency forward contracts(4)	(4.1		)	8.7		(2.0		)	(4.7		)	.8		.3
Total	$	(4.1	)	$	8.7	$	(2.0	)	$	(5.1	)	$	.8	$	.3

Six Months Ended June 30, 2016 and 2015

	Loss Recognized in Other Comprehensive Income (Effective Portion)						Loss Reclassified from AOCI into Income (Effective Portion)(1)						Gain Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)(2)
	2016			2015			2016			2015			2016		2015
Interest rate lock contracts(3)	$	—		$	—		$	(.1	)	$	(.5	)	$	—	$	—
Foreign currency forward contracts(5)	(.6		)	(8.7		)	(7.8		)	(9.6		)	1.9		.2
Total	$	(.6	)	$	(8.7	)	$	(7.9	)	$	(10.1	)	$	1.9	$	.2

⁽¹⁾ Changes in the effective portion of cash flow hedge fair values 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 operations.

⁽³⁾ Losses on interest rate lock derivatives reclassified from AOCI into income were included in interest expense, net, in our condensed consolidated statements of operations.

⁽⁴⁾  During the three-month period ended June 30, 2016, $2.2 million of losses were reclassified from AOCI into contract drilling expense and $200,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations. During the three-month period ended June 30, 2015, $4.9 million of losses were reclassified from AOCI into contract drilling expense and $200,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations.

⁽⁵⁾  During the six-month period ended June 30, 2016, $8.2 million of losses were reclassified from AOCI into contract drilling expense and $400,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations. During the six-month period ended June 30, 2015, $10.0 million of losses were reclassified from AOCI into contract drilling expense and $400,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations.

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Noncontrolling Interests (Tables)

6 Months Ended

Jun. 30, 2016

Noncontrolling Interest [Abstract]

Reconciliation of Income from Continuing Operations

Income from continuing operations attributable to Ensco for the three-month and six-month periods ended June 30, 2016 and 2015 was as follows (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Income from continuing operations	$	592.8		$	272.8		$	770.4		$	600.9
Income from continuing operations attributable to noncontrolling interests	(2.0		)	(2.4		)	(3.4		)	(5.6		)
Income from continuing operations attributable to Ensco	$	590.8		$	270.4		$	767.0		$	595.3

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Reconciliation Of Net Income Attributable To Ensco Shares

The following table is a reconciliation of income from continuing operations attributable to Ensco shares used in our basic and diluted EPS computations for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Income from continuing operations attributable to Ensco	$	590.8		$	270.4		$	767.0		$	595.3
Income from continuing operations allocated to non-vested share awards	(9.8		)	(3.7		)	(12.0		)	(7.4		)
Income from continuing operations attributable to Ensco shares	$	581.0		$	266.7		$	755.0		$	587.9

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

The following table is a reconciliation of the weighted-average shares used in our basic and diluted EPS computations for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,		Six Months Ended June 30,
	2016	2015	2016	2015
Weighted-average shares - basic	284.6	232.1	258.5	232.0
Potentially dilutive shares	—	.1	—	.1
Weighted-average shares - diluted	284.6	232.2	258.5	232.1

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Debt Schedule of Extinguishment of Debt (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Schedule of Extinguishment of Debt [Table Text Block]

	Aggregate Principal Amount Purchased		Aggregate Purchase Price(1)		Discount %
8.50% Senior Notes due 2019	$	45.7	$	38.3	16.2	%
6.875% Senior Notes due 2020	140.1		103.7		26.0	%
4.70% Senior Notes due 2021	722.0		525.1		27.3	%
4.50% Senior Notes due 2024	1.7		0.9		47.1	%
5.20% Senior Notes due 2025	30.7		16.8		45.3	%
Total	$	940.2	$	684.8	27.2	%

⁽¹⁾  Excludes accrued interest paid to holders who tendered in connection with the Tender Offers.

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Discontinued Operations (Tables)

6 Months Ended

Jun. 30, 2016

Discontinued Operations and Disposal Groups [Abstract]

Summary of Loss from Discontinued Operations

The following table summarizes loss from discontinued operations, net, for the three-month and six-month periods ended June 30, 2016 and 2015 (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Revenues	$	—		$	8.1		$	—		$	17.7
Operating expenses	1.6			11.3			2.4			33.2
Operating loss	(1.6		)	(3.2		)	(2.4		)	(15.5		)
Income tax benefit (expense)	0.4			(2.9		)	0.3			9.2
Loss on impairment, net	—			(7.2		)	—			(7.2		)
Gain on disposal of discontinued operations, net	1.0			3.2			1.0			3.2
Loss from discontinued operations, net	$	(.2	)	$	(10.1	)	$	(1.1	)	$	(10.3	)

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Segment Information (Tables)

6 Months Ended

Jun. 30, 2016

Segment Reporting Information, Revenue for Reportable Segment [Abstract]

Schedule Of Segment Reporting Information

Three Months Ended June 30, 2016

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	636.4	$	251.3	$	21.9	$	909.6	$	—		$	909.6
Operating expenses
Contract drilling (exclusive of depreciation)	208.6		122.3		19.3		350.2		—			350.2
Depreciation	77.8		30.1		—		107.9		4.5			112.4
General and administrative	—		—		—		—		27.4			27.4
Operating income	$	350.0	$	98.9	$	2.6	$	451.5	$	(31.9	)	$	419.6
Property and equipment, net	$	8,414.1	$	2,543.0	$	—	$	10,957.1	$	64.1		$	11,021.2

Three Months Ended June 30, 2015

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	634.3	$	384.1	$	40.6	$	1,059.0	$	—		$	1,059.0
Operating expenses
Contract drilling (exclusive of depreciation)	277.7		192.7		32.2		502.6		—			502.6
Depreciation	94.4		43.6		—		138.0		2.5			140.5
General and administrative	—		—		—		—		29.7			29.7
Operating income	$	262.2	$	147.8	$	8.4	$	418.4	$	(32.2	)	$	386.2
Property and equipment, net	$	9,870.7	$	3,223.4	$	—	$	13,094.1	$	75.8		$	13,169.9

Six Months Ended June 30, 2016

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	1,149.0	$	529.2	$	45.4	$	1,723.6	$	—		$	1,723.6
Operating expenses
Contract drilling (exclusive of depreciation)	419.9		256.8		37.2		713.9		—			713.9
Depreciation	158.1		58.7		—		216.8		8.9			225.7
General and administrative	—		—		—		—		50.8			50.8
Operating income	$	571.0	$	213.7	$	8.2	$	792.9	$	(59.7	)	$	733.2
Property and equipment, net	$	8,414.1	$	2,543.0	$	—	$	10,957.1	$	64.1		$	11,021.2

Six Months Ended June 30, 2015

	Floaters		Jackups		Other		Operating Segments Total		Reconciling Items			Consolidated Total
Revenues	$	1,329.3	$	812.4	$	81.2	$	2,222.9	$	—		$	2,222.9
Operating expenses
Contract drilling (exclusive of depreciation)	571.2		384.2		65.5		1,020.9		—			1,020.9
Depreciation	187.4		85.1		—		272.5		5.1			277.6
General and administrative	—		—		—		—		59.8			59.8
Operating income	$	570.7	$	343.1	$	15.7	$	929.5	$	(64.9	)	$	864.6
Property and equipment, net	$	9,870.7	$	3,223.4	$	—	$	13,094.1	$	75.8		$	13,169.9

Schedule Of Geographic Distribution Of Rigs By Segment

As of June 30, 2016, the geographic distribution of our drilling rigs by reportable segment was as follows:

	Floaters	Jackups	Total(1)
North & South America	9	7	16
Europe & Mediterranean	4	11	15
Middle East & Africa	2	11	13
Asia & Pacific Rim	4	7	11
Asia & Pacific Rim (under construction)	1	1	2
Middle East & Africa (under construction)	—	2	2
Held-for-sale	1	1	2
Total	21	40	61

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

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Supplemental Financial Information (Tables)

6 Months Ended

Jun. 30, 2016

Supplemental Financial Information [Abstract]

Accounts Receivable, Net

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

	June 30, 2016			December 31, 2015
Trade	$	415.8		$	595.0
Other	16.7			16.3
	432.5			611.3
Allowance for doubtful accounts	(24.5		)	(29.3		)
	$	408.0		$	582.0

Other Current Assets

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

	June 30, 2016		December 31, 2015
Inventory	$	231.4	$	235.3
Prepaid taxes	50.0		73.5
Deferred costs	40.2		52.1
Prepaid expenses	8.0		20.5
Assets held-for-sale	1.8		5.5
Other	15.0		14.9
	$	346.4	$	401.8

Other Assets, Net

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

	June 30, 2016		December 31, 2015
Deferred tax assets	$	69.8	$	94.8
Deferred costs	42.6		55.8
Prepaid taxes on intercompany transfers of property	33.8		37.1
Supplemental executive retirement plan assets	33.3		33.1
Other	9.6		16.8
	$	189.1	$	237.6

Accrued Liabilities And Other

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

	June 30, 2016		December 31, 2015
Deferred revenue	$	172.9	$	197.2
Personnel costs	104.2		161.6
Taxes	79.6		70.8
Accrued interest	74.3		88.4
Derivative liabilities	14.9		21.6
Other	12.6		11.3
	$	458.5	$	550.9

Other Liabilities

Other liabilities consisted of the following (in millions):

	June 30, 2016		December 31, 2015
Unrecognized tax benefits (inclusive of interest and penalties)	$	153.4	$	149.7
Deferred revenue	143.5		218.6
Supplemental executive retirement plan liabilities	34.5		34.4
Personnel costs	11.4		17.7
Deferred tax liabilities	8.7		4.4
Other	10.2		24.4
	$	361.7	$	449.2

Accumulated other comprehensive income

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

	June 30, 2016			December 31, 2015
Currency translation adjustment	$	7.6		$	7.8
Derivative instruments	13.9			6.6
Other	(1.7		)	(1.9		)
	$	19.8		$	12.5

XML

Guarantee Of Registered Securities (Tables)

6 Months Ended

Jun. 30, 2016

Guarantees [Abstract]

Condensed Consolidating Statements Of Income

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Three Months Ended June 30, 2016 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	7.6		$	36.5		$	—		$	937.4		$	(71.9	)	$	909.6
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	6.7			36.4			—			379.0			(71.9		)	350.2
Depreciation	—			4.4			—			108.0			—			112.4
General and administrative	10.5			—			—			16.9			—			27.4
OPERATING (LOSS) INCOME	(9.6		)	(4.3		)	—			433.5			—			419.6
OTHER INCOME (EXPENSE), NET	175.8			(8.3		)	(18.8		)	1.3			59.9			209.9
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	166.2			(12.6		)	(18.8		)	434.8			59.9			629.5
INCOME TAX PROVISION	—			(15.6		)	—			52.3			—			36.7
DISCONTINUED OPERATIONS, NET	—			—			—			(.2		)	—			(.2		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	424.4			20.0			10.2			—			(454.6		)	—
NET INCOME (LOSS)	590.6			23.0			(8.6		)	382.3			(394.7		)	592.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.0		)	—			(2.0		)
NET INCOME (LOSS)ATTRIBUTABLE TO ENSCO	$	590.6		$	23.0		$	(8.6	)	$	380.3		$	(394.7	)	$	590.6

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Three Months Ended June 30, 2015 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	8.7		$	34.5		$	—		$	1,086.6		$	(70.8	)	$	1,059.0
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	6.3			34.5			—			532.6			(70.8		)	502.6
Depreciation	—			2.4			—			138.1			—			140.5
General and administrative	13.7			—			—			16.0			—			29.7
OPERATING (LOSS) INCOME	(11.3		)	(2.4		)	—			399.9			—			386.2
OTHER (EXPENSE) INCOME, NET	(36.3		)	2.4			(15.2		)	(6.3		)	—			(55.4		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(47.6		)	—			(15.2		)	393.6			—			330.8
INCOME TAX PROVISION	—			14.1			—			43.9			—			58.0
DISCONTINUED OPERATIONS, NET	—			—			—			(10.1		)	—			(10.1		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	307.9			47.5			71.4			—			(426.8		)	—
NET INCOME	260.3			33.4			56.2			339.6			(426.8		)	262.7
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(2.4		)	—			(2.4		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	260.3		$	33.4		$	56.2		$	337.2		$	(426.8	)	$	260.3

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Six Months Ended June 30, 2016 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	14.8		$	72.1		$	—		$	1,780.7		$	(144.0	)	$	1,723.6
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	13.9			72.1			—			771.9			(144.0		)	713.9
Depreciation	—			8.7			—			217.0			—			225.7
General and administrative	16.7			.1			—			34.0			—			50.8
OPERATING (LOSS) INCOME	(15.8		)	(8.8		)	—			757.8			—			733.2
OTHER INCOME (EXPENSE), NET	139.0			(6.7		)	(37.9		)	(9.0		)	59.9			145.3
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	123.2			(15.5		)	(37.9		)	748.8			59.9			878.5
INCOME TAX PROVISION	—			15.4			—			92.7			—			108.1
DISCONTINUED OPERATIONS, NET	—			—			—			(1.1		)	—			(1.1		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	642.7			53.5			63.8			—			(760.0		)	—
NET INCOME	765.9			22.6			25.9			655.0			(700.1		)	769.3
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(3.4		)	—			(3.4		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	765.9		$	22.6		$	25.9		$	651.6		$	(700.1	)	$	765.9

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS Six Months Ended June 30, 2015 (in millions) (Unaudited)
	Ensco plc			ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
OPERATING REVENUES	$	17.4		$	69.3		$	—		$	2,278.2		$	(142.0	)	$	2,222.9
OPERATING EXPENSES
Contract drilling (exclusive of depreciation)	13.1			69.3			—			1,080.5			(142.0		)	1,020.9
Depreciation	.1			4.9			—			272.6			—			277.6
General and administrative	27.0			.1			—			32.7			—			59.8
OPERATING (LOSS) INCOME	(22.8		)	(5.0		)	—			892.4			—			864.6
OTHER (EXPENSE) INCOME, NET	(96.2		)	(14.4		)	(31.1		)	13.7			—			(128.0		)
(LOSS) INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(119.0		)	(19.4		)	(31.1		)	906.1			—			736.6
INCOME TAX PROVISION	—			27.9			—			107.8			—			135.7
DISCONTINUED OPERATIONS, NET	—			—			—			(10.3		)	—			(10.3		)
EQUITY EARNINGS IN AFFILIATES, NET OF TAX	704.0			92.7			135.3			—			(932.0		)	—
NET INCOME	585.0			45.4			104.2			788.0			(932.0		)	590.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—			—			—			(5.6		)	—			(5.6		)
NET INCOME ATTRIBUTABLE TO ENSCO	$	585.0		$	45.4		$	104.2		$	782.4		$	(932.0	)	$	585.0

Condensed Consolidating Statements Of Comprehensive Income

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Three Months Ended June 30, 2016

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.			Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME (LOSS)	$	590.6	$	23.0		$	(8.6	)	$	382.3		$	(394.7	)	$	592.6
OTHER COMPREHENSIVE INCOME (LOSS), NET
Net change in derivative fair value	—		(4.1		)	—			—			—			(4.1		)
Reclassification of net losses on derivative instruments from other comprehensive income into net income	—		2.0			—			—			—			2.0
Other	—		—			—			.1			—			.1
NET OTHER COMPREHENSIVE (LOSS) INCOME	—		(2.1		)	—			.1			—			(2.0		)
COMPREHENSIVE INCOME (LOSS)	590.6		20.9			(8.6		)	382.4			(394.7		)	590.6
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—			(2.0		)	—			(2.0		)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO ENSCO	$	590.6	$	20.9		$	(8.6	)	$	380.4		$	(394.7	)	$	588.6

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Three Months Ended June 30, 2015

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated		Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	260.3	$	33.4	$	56.2	$	339.6		$	(426.8	)	$	262.7
OTHER COMPREHENSIVE INCOME (LOSS), NET
Net change in derivative fair value	—		8.7		—		—			—			8.7
Reclassification of net gains on derivative instruments from other comprehensive income into net income	—		5.1		—		—			—			5.1
Other	—		—		—		(1.3		)	—			(1.3		)
NET OTHER COMPREHENSIVE INCOME (LOSS)	—		13.8		—		(1.3		)	—			12.5
COMPREHENSIVE INCOME	260.3		47.2		56.2		338.3			(426.8		)	275.2
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—		—		(2.4		)	—			(2.4		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	260.3	$	47.2	$	56.2	$	335.9		$	(426.8	)	$	272.8

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Six Months Ended June 30, 2016

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	765.9	$	22.6		$	25.9	$	655.0		$	(700.1	)	$	769.3
OTHER COMPREHENSIVE INCOME, NET
Net change in derivative fair value	—		(.6		)	—		—			—			(.6		)
Reclassification of net losses on derivative instruments from other comprehensive income into net income	—		7.9			—		—			—			7.9
Other	—		—			—		—			—			—
NET OTHER COMPREHENSIVE INCOME	—		7.3			—		—			—			7.3
COMPREHENSIVE INCOME	765.9		29.9			25.9		655.0			(700.1		)	776.6
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—		(3.4		)	—			(3.4		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	765.9	$	29.9		$	25.9	$	651.6		$	(700.1	)	$	773.2

ENSCO PLC AND SUBSIDIARIES

CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Six Months Ended June 30, 2015

(in millions)

(Unaudited)

	Ensco plc		ENSCO International Incorporated			Pride International, Inc.		Other Non-Guarantor Subsidiaries of Ensco			Consolidating Adjustments			Total
NET INCOME	$	585.0	$	45.4		$	104.2	$	788.0		$	(932.0	)	$	590.6
OTHER COMPREHENSIVE INCOME, NET
Net change in derivative fair value	—		(8.7		)	—		—			—			(8.7		)
Reclassification of net gains on derivative instruments from other comprehensive income into net income	—		10.1			—		—			—			10.1
Other	—		—			—		1.3			—			1.3
NET OTHER COMPREHENSIVE INCOME	—		1.4			—		1.3			—			2.7
COMPREHENSIVE INCOME	585.0		46.8			104.2		789.3			(932.0		)	593.3
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	—		—			—		(5.6		)	—			(5.6		)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$	585.0	$	46.8		$	104.2	$	783.7		$	(932.0	)	$	587.7

Condensed Consolidating Balance Sheets

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS June 30, 2016 (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	$	712.8	$	—	$	26.1		$	51.4	$	—		$	790.3
Short-term investments	1,010.0		—		—			—		—			1,010.0
Accounts receivable, net	5.2		—		—			402.8		—			408.0
Accounts receivable from affiliates	245.7		637.7		—			565.8		(1,449.2		)	—
Other	.1		10.1		—			336.2		—			346.4
Total current assets	1,973.8		647.8		26.1			1,356.2		(1,449.2		)	2,554.7
PROPERTY AND EQUIPMENT, AT COST	1.8		118.8		—			12,756.6		—			12,877.2
Less accumulated depreciation	1.8		55.7		—			1,798.5		—			1,856.0
Property and equipment, net	—		63.1		—			10,958.1		—			11,021.2
DUE FROM AFFILIATES	1,428.5		5,069.7		2,043.1			6,731.5		(15,272.8		)	—
INVESTMENTS IN AFFILIATES	8,412.1		1,717.2		—			—		(10,129.3		)	—
OTHER ASSETS, NET	—		40.0		—			290.5		(141.4		)	189.1
	$	11,814.4	$	7,537.8	$	2,069.2		$	19,336.3	$	(26,992.7	)	$	13,765.0
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	48.0	$	32.1	$	30.9		$	499.8	$	—		$	610.8
Accounts payable to affiliates	46.4		591.2		3.8			807.8		(1,449.2		)	$	—
Total current liabilities	94.4		623.3		34.7			1,307.6		(1,449.2		)	610.8
DUE TO AFFILIATES	791.1		5,391.6		2,056.0			7,034.1		(15,272.8		)	—
LONG-TERM DEBT	3,041.8		149.1		1,714.7			—		—			4,905.6
INVESTMENTS IN AFFILIATES	—		—		1,215.2					(1,215.2		)	—
OTHER LIABILITIES	—		150.2		—			352.9		(141.4		)	361.7
ENSCO SHAREHOLDERS' EQUITY	7,887.1		1,223.6		(2,951.4		)	10,634.7		(8,914.1		)	7,879.9
NONCONTROLLING INTERESTS	—		—		—			7.0		—			7.0
Total equity	7,887.1		1,223.6		(2,951.4		)	10,641.7		(8,914.1		)	7,886.9
	$	11,814.4	$	7,537.8	$	2,069.2		$	19,336.3	$	(26,992.7	)	$	13,765.0

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEETS December 31, 2015 (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	$	94.0	$	—	$	2.0		$	25.3	$	—		$	121.3
Short-term investments	1,180.0		—		—			—		—			$	1,180.0
Accounts receivable, net	1.2		—		—			580.8		—			582.0
Accounts receivable from affiliates	808.7		237.3		—			148.1		(1,194.1		)	—
Other	.2		229.3		—			172.3		—			401.8
Total current assets	2,084.1		466.6		2.0			926.5		(1,194.1		)	2,285.1
PROPERTY AND EQUIPMENT, AT COST	1.8		117.5		—			12,600.1		—			12,719.4
Less accumulated depreciation	1.8		47.7		—			1,582.1		—			1,631.6
Property and equipment, net	—		69.8		—			11,018.0		—			11,087.8
DUE FROM AFFILIATES	1,303.7		5,270.0		2,035.5			6,869.9		(15,479.1		)	—
INVESTMENTS IN AFFILIATES	7,743.8		—		—			—		(7,743.8		)	—
OTHER ASSETS, NET	—		43.1		—			324.9		(130.4		)	237.6
	$	11,131.6	$	5,849.5	$	2,037.5		$	19,139.3	$	(24,547.4	)	$	13,610.5
LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
Accounts payable and accrued liabilities	$	60.7	$	69.6	$	34.8		$	610.4	$	—		$	775.5
Accounts payable to affiliates	19.4		176.3		—			998.4		(1,194.1		)	—
Total current liabilities	80.1		245.9		34.8			1,608.8		(1,194.1		)	775.5
DUE TO AFFILIATES	751.9		4,354.3		1,763.7			8,609.2		(15,479.1		)	—
LONG-TERM DEBT	3,782.4		149.0		1,937.2			—		—			5,868.6
INVESTMENTS IN AFFILIAITES	—		442.0		1,319.3			—		(1,761.3		)	—
OTHER LIABILITIES	—		135.7		—			443.9		(130.4		)	449.2
ENSCO SHAREHOLDERS' EQUITY	6,517.2		522.6		(3,017.5		)	8,473.1		(5,982.5		)	6,512.9
NONCONTROLLING INTERESTS	—		—		—			4.3		—			4.3
Total equity	6,517.2		522.6		(3,017.5		)	8,477.4		(5,982.5		)	6,517.2
	$	11,131.6	$	5,849.5	$	2,037.5		$	19,139.3	$	(24,547.4	)	$	13,610.5

Condensed Consolidating Statements Of Cash Flows

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Six Months Ended June 30, 2016 (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	$	(83.4	)	$	130.8		$	(60.4	)	$	813.2		$	—		$	800.2
INVESTING ACTIVITIES
Maturities of short-term investments	1,032.0			—			—			—			—			1,032.0
Purchases of short-term investments	(862.0		)	—			—			—			—			(862.0		)
Additions to property and equipment	—			—			—			(209.4		)	—			(209.4		)
Purchase of affiliate debt	(142.0		)	—			—			—			142.0			—
Other	—			—			—			7.6			—			7.6
Net cash provided by (used in) investing activities of continuing operations	28.0			—			—			(201.8		)	142.0			(31.8		)
FINANCING ACTIVITIES
Reduction of long-term borrowings	(542.8		)	—			—			—			(142.0		)	(684.8		)
Proceeds from equity issuance	585.5			—			—			—			—			585.5
Cash dividends paid	(5.5		)	—			—			—			—			(5.5		)
Advances from (to) affiliates	638.9			(130.8		)	84.5			(592.6		)	—			—
Other	(1.9		)	—			—			—			—			(1.9		)
Net cash provided by (used in) financing activities	674.2			(130.8		)	84.5			(592.6		)	(142.0		)	(106.7		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—			1.4			—			1.4
Investing activities	—			—			—			6.3			—			6.3
Net cash used in discontinued operations	—			—			—			7.7			—			7.7
Effect of exchange rate changes on cash and cash equivalents	—			—			—			(.4		)	—			(.4		)
NET INCREASE IN CASH AND CASH EQUIVALENTS	618.8			—			24.1			26.1			—			669.0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	94.0			—			2.0			25.3			—			121.3
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	712.8		$	—		$	26.1		$	51.4		$	—		$	790.3

ENSCO PLC AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS Six Months Ended June 30, 2015 (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	$	(66.2	)	$	(19.7	)	$	(49.9	)	$	1,026.8		$	—	$	891.0
INVESTING ACTIVITIES
Additions to property and equipment	—			(5.1		)	—			(908.8		)	—		(913.9		)
Maturities of short-term investments	712.0			—			—			45.3					757.3
Purchases of short-term investments	(650.0		)	—			—			—			—		(650.0		)
Other	—			—			—			1.1			—		1.1
Net cash provided by (used in) investing activities of continuing operations	62			(5.1		)	—			(862.4		)	—		(805.5		)
FINANCING ACTIVITIES
Proceeds from issuance of senior notes	1,078.7			—			—			—			—		1,078.7
Reduction of long-term borrowings	(998.3		)	—			—			(59.7		)	—		(1,058.0		)
Cash dividends paid	(70.5		)	—			—			—			—		(70.5		)
Premium paid on redemption of debt	(27.2		)	—			—			(3.1		)	—		(30.3		)
Debt financing costs	(10.5		)	—			—			—			—		(10.5		)
Advances from (to) affiliates	88.2			24.8			63.5			(176.5		)	—		—
Other	(9.0		)	—			—			2.2			—		(6.8		)
Net cash provided by (used in) financing activities	51.4			24.8			63.5			(237.1		)	—		(97.4		)
DISCONTINUED OPERATIONS
Operating activities	—			—			—			(4.2		)	—		(4.2		)
Investing activities	—			—			—			(0.6		)	—		(0.6		)
Net cash used in discontinued operations	—			—			—			(4.8		)	—		(4.8		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			.2			—		.2
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	47.2			—			13.6			(77.3		)	—		(16.5		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	287.4			—			90.8			286.6			—		664.8
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	334.6		$	—		$	104.4		$	209.3		$	—	$	648.3

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Unaudited Condensed Consolidated Financial Statements Unaudited Condensed Consolidated Financial Statements (Narrative) (Details) - Sales Revenue, Net [Member] $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($)
Revenue from External Customer [Line Items]
Gain (Loss) on Contract Termination	$ 205.0
ENSCO DS-9 [Member]
Revenue from External Customer [Line Items]
Gain (Loss) on Contract Termination	185.0
ENSCO 8503 [Member]
Revenue from External Customer [Line Items]
Gain (Loss) on Contract Termination	$ 20.0

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Unaudited Condensed Consolidated Financial Statements New Accounting Pronouncements (Details) $ in Millions	Dec. 31, 2015 USD ($)
New Accounting Pronouncements [Abstract]
Debt Issuance Cost, Gross, Noncurrent	$ 26.5

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Fair Value Measurements (Schedule Of Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Supplemental executive retirement plan assets	$ 33.3	$ 33.1
Total financial assets	33.3	33.1
Derivative Assets (Liabilities), at Fair Value, Net	(8.5)	(19.7)
Financial Liabilities Fair Value Disclosure	(8.5)	(19.7)
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Supplemental executive retirement plan assets	33.3	33.1
Total financial assets	33.3	33.1
Derivative Assets (Liabilities), at Fair Value, Net	0.0	0.0
Financial Liabilities Fair Value Disclosure	0.0	0.0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Supplemental executive retirement plan assets	0.0	0.0
Total financial assets	0.0	0.0
Derivative Assets (Liabilities), at Fair Value, Net	(8.5)	(19.7)
Financial Liabilities Fair Value Disclosure	(8.5)	(19.7)
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Supplemental executive retirement plan assets	0.0	0.0
Total financial assets	0.0	0.0
Derivative Assets (Liabilities), at Fair Value, Net	0.0	0.0
Financial Liabilities Fair Value Disclosure	$ 0.0	$ 0.0

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Fair Value Measurements (Schedule Of Carrying Values And Estimated Fair Values Of Debt Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 4,905.6	$ 5,868.6
Estimated Fair Value	$ 3,707.0	$ 4,621.9
Seven Point Two Zero Percent Debentures Member
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.20%	7.20%
Carrying Value	$ 149.1	$ 149.1
Estimated Fair Value	$ 115.9	$ 133.5
Seven Point Eight Seven Five Percent Senior Notes Member
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.875%	7.875%
Carrying Value	$ 379.1	$ 379.8
Estimated Fair Value	$ 210.0	$ 244.0
Eight Point Five Zero Percent Senior Notes Member
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.50%	8.50%
Carrying Value	$ 506.5	$ 566.4
Estimated Fair Value	$ 467.0	$ 510.2
Four Point Five Percent Senior Notes Member [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.50%	4.50%
Carrying Value	$ 618.3	$ 619.7
Estimated Fair Value	$ 427.0	$ 417.4
Five Point Two Percent Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.20%	5.20%
Carrying Value	$ 662.4	$ 692.5
Estimated Fair Value	$ 465.2	$ 505.2
Six Point Eight Seven Five Percent Senior Notes Due Two Thousand Twenty Member
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.875%	6.875%
Carrying Value	$ 829.1	$ 990.9
Estimated Fair Value	$ 747.6	$ 850.5
Five Point Seven Five Percent Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.75%	5.75%
Carrying Value	$ 994.0	$ 993.5
Estimated Fair Value	$ 620.9	$ 707.1
Four Point Seven Zero Percent Senior Notes Member
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.70%	4.70%
Carrying Value	$ 767.1	$ 1,476.7
Estimated Fair Value	$ 653.4	$ 1,254.0

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Derivative Instruments (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Net assets associated with foreign currency derivatives	$ (8.5)		$ (8.5)		$ (19.7)
Maturity period of derivatives (in months)			18 months
Estimated amount of net gains (losses) associated with derivative instruments, net of tax, in next twelve months			$ (4.6)
Not Designated [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on derivatives not designated as hedging instruments	(3.5)	$ 4.5	0.9	$ (9.0)
Foreign Exchange [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate cash flow hedges outstanding	230.3		230.3
Cash flow hedges outstanding for British pounds	107.6		107.6
Cash flow hedges outstanding for Brazilian reals	28.3		28.3
Cash flow hedges outstanding for euros	33.8		33.8
Cash flow hedges outstanding for Australian dollars	43.6		43.6
Cash flow hedges outstanding for other currencies	17.0		17.0
Foreign Exchange [Member] | Not Designated [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate cash flow hedges outstanding	145.2		145.2
Cash flow hedges outstanding for British pounds	16.9		16.9
Cash flow hedges outstanding for Brazilian reals	9.9		9.9
Cash flow hedges outstanding for euros	78.2		78.2
Cash flow hedges outstanding for Indonesian rupiah	12.5		12.5
Cash flow hedges outstanding for Swiss francs	16.0		16.0
Cash flow hedges outstanding for other currencies	$ 11.7		$ 11.7

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Derivative Instruments (Schedule Of Derivatives At Fair Value) (Details) - USD ($) $ in Millions		Jun. 30, 2016	Dec. 31, 2015
Derivative [Line Items]
Total fair value of derivative assets		$ 7.5	$ 3.4
Total fair value of derivative liabilities		16.0	23.1
Designated As Hedging Instrument [Member]
Derivative [Line Items]
Total fair value of derivative assets		6.0	0.8
Total fair value of derivative liabilities		13.8	22.2
Designated As Hedging Instrument [Member] | Foreign Currency Forward Contracts - Current [Member]
Derivative [Line Items]
Total fair value of derivative assets	[1]	5.0	0.6
Total fair value of derivative liabilities	[1]	12.7	20.7
Designated As Hedging Instrument [Member] | Foreign Currency Forward Contracts - Non-Current [Member]
Derivative [Line Items]
Total fair value of derivative assets	[2]	1.0	0.2
Total fair value of derivative liabilities	[2]	1.1	1.5
Not Designated [Member]
Derivative [Line Items]
Total fair value of derivative assets		1.5	2.6
Total fair value of derivative liabilities		2.2	0.9
Not Designated [Member] | Foreign Currency Forward Contracts - Current [Member]
Derivative [Line Items]
Total fair value of derivative assets	[1]	1.5	2.6
Total fair value of derivative liabilities	[1]	$ 2.2	$ 0.9

[1] Derivative assets and liabilities with 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 with 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.

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Derivative Instruments (Gains And Losses On Derivatives Designated As Cash Flow Hedges) (Details) - USD ($)		3 Months Ended				6 Months Ended
		Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2016		Jun. 30, 2015
Interest Rate Lock Contracts [Member]
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") (Effective Portion)	[1]	$ 0		$ 0		$ 0		$ 0
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)	[1],[2]	0		(400,000)		(100,000)		(500,000)
Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	[1],[3]	0		0		0		0
Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") (Effective Portion)		(4,100,000)	[4]	8,700,000	[4]	(600,000)	[5]	(8,700,000)	[5]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)	[2]	(2,000,000)	[4]	(4,700,000)	[4]	(7,800,000)	[5]	(9,600,000)	[5]
Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	[3]	800,000	[4]	300,000	[4]	1,900,000	[5]	200,000	[5]
Foreign Currency Forward Contracts [Member] | Contract Drilling [Member]
Derivative [Line Items]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)		(2,200,000)		(4,900,000)		(8,200,000)		(10,000,000)
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		200,000		400,000		400,000
Cash Flow Hedges [Member]
Derivative [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income ("OCI") (Effective Portion)		(4,100,000)		8,700,000		(600,000)		(8,700,000)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income ("AOCI") into Income (Effective Portion)	[2]	(2,000,000)		(5,100,000)		(7,900,000)		(10,100,000)
Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	[3]	$ 800,000		$ 300,000		$ 1,900,000		$ 200,000

[1] Losses on interest rate lock derivatives reclassified from AOCI into income were included in interest expense, net, in our condensed consolidated statements of operations.

[2] Changes in the effective portion of cash flow hedge fair values 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.

[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 operations.

[4] During the three-month period ended June 30, 2016, $2.2 million of losses were reclassified from AOCI into contract drilling expense and $200,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations. During the three-month period ended June 30, 2015, $4.9 million of losses were reclassified from AOCI into contract drilling expense and $200,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations.

[5] During the six-month period ended June 30, 2016, $8.2 million of losses were reclassified from AOCI into contract drilling expense and $400,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations. During the six-month period ended June 30, 2015, $10.0 million of losses were reclassified from AOCI into contract drilling expense and $400,000 of gains were reclassified from AOCI into depreciation expense in our condensed consolidated statement of operations.

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Noncontrolling Interests Reconciliation of income from continuing operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Noncontrolling Interest [Abstract]
Income (loss) from continuing operations	$ 592.8	$ 272.8	$ 770.4	$ 600.9
Income from continuing operations attributable to noncontrolling interests	(2.0)	(2.4)	(3.4)	(5.6)
Income (loss) from continuing operations attributable to Ensco	$ 590.8	$ 270.4	$ 767.0	$ 595.3

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Earnings Per Share (Reconciliation Of Net Income Attributable To Ensco Shares) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Income (loss) from continuing operations attributable to Ensco	$ 590.8	$ 270.4	$ 767.0	$ 595.3
Other Preferred Stock Dividends and Adjustments	9.8	3.7	12.0	7.4
Income (Loss) from Continuing Operations Attributable to Parent, Available to Common Stockholders	$ 581.0	$ 266.7	$ 755.0	$ 587.9

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Earnings Per Share (Reconciliation Of Weighted-Average Shares Used In Earnings Per Share Computations) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Weighted-average shares - basic (in shares)	284,600,000	232,100,000	258,500,000	232,000,000
Potentially dilutive share options (in shares)	0	100,000	0	100,000
Weighted-average shares - diluted (in shares)	284,600,000	232,200,000	258,500,000	232,100,000
Antidilutive share options excluded from computation of diluted earnings per share (in shares)	500,000	500,000	600,000	500,000

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Debt (Details) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt	$ 260,800,000	$ (33,500,000)
Debt Instrument, Repurchased Face Amount	940,200,000
Debt Instrument, Repurchase Amount	684,800,000
Five Point Two Percent Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal after Year Five	669,300,000
Debt Instrument, Repurchased Face Amount	$ 30,700,000
Debt Instrument, Interest Rate, Stated Percentage	5.20%		5.20%
Debt Instrument, Repurchase Amount	$ 16,800,000
Senior Notes [Member]
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt	260,800,000
Four Point Seven Zero Percent Senior Notes Member
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	$ 722,000,000
Debt Instrument, Interest Rate, Stated Percentage	4.70%		4.70%
Debt Instrument, Repurchase Amount	$ 525,100,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	778,000,000
Eight Point Five Zero Percent Senior Notes Member
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	$ 45,700,000
Debt Instrument, Interest Rate, Stated Percentage	8.50%		8.50%
Debt Instrument, Repurchase Amount	$ 38,300,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	454,300,000
Six Point Eight Seven Five Percent Senior Notes Due Two Thousand Twenty Member
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	$ 140,100,000
Debt Instrument, Interest Rate, Stated Percentage	6.875%		6.875%
Debt Instrument, Repurchase Amount	$ 103,700,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	759,900,000
Four Point Five Percent Senior Notes Member [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal after Year Five	623,200,000
Debt Instrument, Repurchased Face Amount	$ 1,700,000
Debt Instrument, Interest Rate, Stated Percentage	4.50%		4.50%
Debt Instrument, Repurchase Amount	$ 900,000
Revolving Credit Facility [Member] | Five Year Credit Facility Member
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,750,000,000
Line of Credit Facility, Current Borrowing Capacity	$ 2,250,000,000
Maximum Percent of Debt to Total Capitalization Ratio	60.00%
Line of Credit Facility, Commitment Fee Percentage	0.225%
Line of Credit Facility, Fair Value of Amount Outstanding	$ 0		$ 0
Revolving Credit Facility [Member] | Base Rate [Member] | Five Year Credit Facility Member
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Five Year Credit Facility Member
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%

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Debt Tender Offers (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Extinguishment of Debt [Line Items]
Tender Offer	$ 750.0
Debt Instrument, Repurchased Face Amount	940.2
Debt Instrument, Repurchase Amount	$ 684.8
Discount on Principal	27.16443%
Tender Offer [Member]
Extinguishment of Debt [Line Items]
Debt Instrument, Repurchased Face Amount	$ 860.7
Debt Instrument, Repurchase Amount	$ 622.3
Eight Point Five Zero Percent Senior Notes Member
Extinguishment of Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.50%	8.50%
Debt Instrument, Repurchased Face Amount	$ 45.7
Debt Instrument, Repurchase Amount	$ 38.3
Discount on Principal	16.19256%
Six Point Eight Seven Five Percent Senior Notes Due Two Thousand Twenty Member
Extinguishment of Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.875%	6.875%
Debt Instrument, Repurchased Face Amount	$ 140.1
Debt Instrument, Repurchase Amount	$ 103.7
Discount on Principal	25.98144%
Four Point Seven Zero Percent Senior Notes Member
Extinguishment of Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.70%	4.70%
Debt Instrument, Repurchased Face Amount	$ 722.0
Debt Instrument, Repurchase Amount	$ 525.1
Discount on Principal	27.27147%
Four Point Five Percent Senior Notes Member [Member]
Extinguishment of Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.50%	4.50%
Debt Instrument, Repurchased Face Amount	$ 1.7
Debt Instrument, Repurchase Amount	$ 0.9
Discount on Principal	47.05882%
Five Point Two Percent Senior Notes [Member]
Extinguishment of Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.20%	5.20%
Debt Instrument, Repurchased Face Amount	$ 30.7
Debt Instrument, Repurchase Amount	$ 16.8
Discount on Principal	45.27687%
Open Market Repurchase [Member]
Extinguishment of Debt [Line Items]
Debt Instrument, Repurchased Face Amount	$ 79.5
Debt Instrument, Repurchase Amount	$ 62.5

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Shareholders' Equity (Details) $ / shares in Units, $ in Millions	3 Months Ended
	Jun. 30, 2016 USD ($) $ / shares shares
Equity [Abstract]
Stock Issued During Period, Shares, New Issues | shares	65,550,000
Shares Issued, Price Per Share | $ / shares	$ 9.25
Proceeds from (Repurchase of) Equity	$ 585.5
Increase in Common Stock, value due to Equity Issuance	6.6
Increase in Additional Paid in Capital due to Equity Issuance	$ 578.9

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Share-Based Compensation (Details) shares in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016 $ / shares shares	Jun. 30, 2016 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement to be paid in Cash, Liability Award, Grants in period, Weighted Average Grant Date Fair Value | $ / shares	$ 9.65	$ 9.65
Cash-based restricted share unit awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted | shares	3.4
Restricted share awards and share unit awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate		20.00%
Vesting rate for certain officers and non-employee directors		33.00%

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Discontinued Operations (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operations, Income Tax Expense (Benefit), Discrete Item			$ 13.3
Impairment of Long-Lived Assets to be Disposed of, Net of Tax Benefit	$ 0.0	$ 7.2		$ 0.0	$ 7.2
Net proceeds from rig sale			1.2
ENSCO 6000 [Member] | Floaters [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of Long-Lived Assets to be Disposed of			7.2
ENSCO 5002 [Member] [Member] | Floaters [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from rig sale			$ 1.6

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Discontinued Operations (Summary of Income From Discontinued Operations) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Revenues	$ 0.0		$ 8.1				$ 0.0	$ 17.7
Operating expenses	1.6		11.3				2.4	33.2
Operating loss before income taxes	(1.6)		(3.2)				(2.4)	(15.5)
Income tax (expense) benefit	0.4		(2.9)				0.3	9.2
Loss on impairment, net	0.0		(7.2)				0.0	(7.2)
Gain (loss) on disposal of discontinued operations, net	1.0		3.2				1.0	3.2
Income (loss) from discontinued operations	$ (0.2)	$ (0.2)	$ (10.1)	$ (10.1)	$ (1.1)	$ (10.3)	$ (1.1)	$ (10.3)

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Income Taxes (Narrative) (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015
Income Tax Examination [Line Items]
Consolidated effective income tax rate including tax expense attributable to prior periods	5.80%				12.30%
Effective Income Tax Rate Reconciliation, Percent		19.90%	17.50%	17.50%	24.30%	18.40%

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Contingencies (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($) plaintiffs
Oil and Gas Delivery Commitments and Contracts [Line Items]
Loss Contingency, Number of Plaintiffs	46
Loss Contingency, Claims Settled, Number	58
Loss Contingency, Claims Settled Pending Documentation, Number	13
Letters of Credit Outstanding, Amount | $	$ 72.3

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Segment Information (Narrative) (Details)	6 Months Ended
	Jun. 30, 2016 segments
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Number of operating segments (in segments)	3
Number of reportable segments (in segments)	2

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Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenues	$ 909,600,000	$ 1,059,000,000	$ 1,723,600,000	$ 2,222,900,000
Operating Expenses [Abstract]
Contract drilling (exclusive of depreciation)	350,200,000	502,600,000	713,900,000	1,020,900,000
Depreciation	112,400,000	140,500,000	225,700,000	277,600,000
General and administrative	27,400,000	29,700,000	50,800,000	59,800,000
OPERATING (LOSS) INCOME	419,600,000	386,200,000	733,200,000	864,600,000
Property and equipment, net	11,021,200,000	13,169,900,000	11,021,200,000	13,169,900,000	$ 11,087,800,000
Floaters [Member]
Segment Reporting Information [Line Items]
Revenues	636,400,000	634,300,000	1,149,000,000	1,329,300,000
Operating Expenses [Abstract]
Contract drilling (exclusive of depreciation)	208,600,000	277,700,000	419,900,000	571,200,000
Depreciation	77,800,000	94,400,000	158,100,000	187,400,000
General and administrative	0	0	0	0
OPERATING (LOSS) INCOME	350,000,000	262,200,000	571,000,000	570,700,000
Property and equipment, net	8,414,100,000	9,870,700,000	8,414,100,000	9,870,700,000
Jackup [Member]
Segment Reporting Information [Line Items]
Revenues	251,300,000	384,100,000	529,200,000	812,400,000
Operating Expenses [Abstract]
Contract drilling (exclusive of depreciation)	122,300,000	192,700,000	256,800,000	384,200,000
Depreciation	30,100,000	43,600,000	58,700,000	85,100,000
General and administrative	0	0	0	0
OPERATING (LOSS) INCOME	98,900,000	147,800,000	213,700,000	343,100,000
Property and equipment, net	2,543,000,000	3,223,400,000	2,543,000,000	3,223,400,000
Other [Member]
Segment Reporting Information [Line Items]
Revenues	21,900,000	40,600,000	45,400,000	81,200,000
Operating Expenses [Abstract]
Contract drilling (exclusive of depreciation)	19,300,000	32,200,000	37,200,000	65,500,000
Depreciation	0	0	0	0
General and administrative	0	0	0	0
OPERATING (LOSS) INCOME	2,600,000	8,400,000	8,200,000	15,700,000
Property and equipment, net	0	0	0	0
Operating Segments Total [Member]
Segment Reporting Information [Line Items]
Revenues	909,600,000	1,059,000,000	1,723,600,000	2,222,900,000
Operating Expenses [Abstract]
Contract drilling (exclusive of depreciation)	350,200,000	502,600,000	713,900,000	1,020,900,000
Depreciation	107,900,000	138,000,000	216,800,000	272,500,000
General and administrative	0	0	0	0
OPERATING (LOSS) INCOME	451,500,000	418,400,000	792,900,000	929,500,000
Property and equipment, net	10,957,100,000	13,094,100,000	10,957,100,000	13,094,100,000
Reconciling Items [Member]
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Operating Expenses [Abstract]
Contract drilling (exclusive of depreciation)	0	0	0	0
Depreciation	4,500,000	2,500,000	8,900,000	5,100,000
General and administrative	27,400,000	29,700,000	50,800,000	59,800,000
OPERATING (LOSS) INCOME	(31,900,000)	(32,200,000)	(59,700,000)	(64,900,000)
Property and equipment, net	$ 64,100,000	$ 75,800,000	$ 64,100,000	$ 75,800,000

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Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details)	Jun. 30, 2016
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	61	[1]
Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	21
Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	40
North & South America (Excl. Brazil) [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	16	[1]
North & South America (Excl. Brazil) [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	9
North & South America (Excl. Brazil) [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	7
Europe & Mediterranean [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	15	[1]
Europe & Mediterranean [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	4
Europe & Mediterranean [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	11
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)	2
Middle East & Africa [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	11
Asia & Pacific Rim [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	11	[1]
Asia & Pacific Rim [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	4
Asia & Pacific Rim [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	7
Middle East Under Construction Member [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	2	[1]
Middle East Under Construction Member [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	0
Middle East Under Construction Member [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	2
Discontinued Operations, Held-for-sale [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	2	[1]
Discontinued Operations, Held-for-sale [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1
Discontinued Operations, Held-for-sale [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1
Construction in Progress [Member] | Asia & Pacific Rim [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	2	[1]
Construction in Progress [Member] | Asia & Pacific Rim [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1
Construction in Progress [Member] | Asia & Pacific Rim [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1

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

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Supplemental Financial Information Supplemental Financial Information (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Proceeds from Sale of Property, Plant, and Equipment				$ 1,200,000
Customer Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Floaters [Member]
Concentration Risk, Percentage	100.00%	100.00%	100.00%	100.00%
Customer Concentration Risk [Member] | Total S.A. [Member] | Sales Revenue, Services, Net [Member] | Floaters [Member]
Concentration Risk, Percentage	13.00%	10.00%	14.00%	9.00%
Customer Concentration Risk [Member] | BP [Member] | Sales Revenue, Services, Net [Member]
Concentration Risk, Percentage	10.00%	16.00%	12.00%	14.00%
Customer Concentration Risk [Member] | BP [Member] | Sales Revenue, Services, Net [Member] | Floaters [Member]
Concentration Risk, Percentage	75.00%	79.00%	76.00%	82.00%
Geographic Concentration Risk [Member] | Sales Revenue, Services, Net [Member]
Revenues	$ 909,600,000.00	$ 1,059,000,000.00	$ 1,723,600,000.00	$ 2,222,900,000.00
Geographic Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | US Gulf Of Mexico [Member]
Revenues	304,500,000.00	271,000,000.00	464,700,000.00	609,800,000.00
Geographic Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Angola [Member]
Revenues	$ 132,400,000	$ 182,400,000	$ 268,600,000	$ 351,700,000
Geographic Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Floaters [Member] | US Gulf Of Mexico [Member]
Concentration Risk, Percentage	92.00%	83.00%	89.00%	84.00%
Geographic Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Floaters [Member] | Angola [Member]
Concentration Risk, Percentage	88.00%	91.00%	87.00%	90.00%
Geographic Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Floaters [Member] | Brazil [Member]
Revenues	$ 81,700,000	$ 115,700,000	$ 202,700,000	$ 238,400,000

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Supplemental Financial Information (Accounts Receivable, Net) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Supplemental Information For Property, Casualty Insurance Underwriters [Line Items]
Accounts receivable	$ 432.5	$ 611.3
Allowance for doubtful accounts	(24.5)	(29.3)
Accounts receivable, net	408.0	582.0
Trade [Member]
Supplemental Information For Property, Casualty Insurance Underwriters [Line Items]
Accounts receivable	415.8	595.0
Other [Member]
Supplemental Information For Property, Casualty Insurance Underwriters [Line Items]
Accounts receivable	$ 16.7	$ 16.3

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Supplemental Financial Information (Other Current Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Supplemental Financial Information [Abstract]
Assets held for sale	$ 1.8	$ 5.5
Inventory	231.4	235.3
Deferred costs	40.2	52.1
Prepaid Expense	8.0	20.5
Prepaid taxes	50.0	73.5
Other	15.0	14.9
Other current assets	$ 346.4	$ 401.8

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Supplemental Financial Information (Other Assets, Net) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Supplemental Financial Information [Abstract]
Deferred costs	$ 42.6	$ 55.8
Deferred tax assets	69.8	94.8
Supplemental executive retirement plan assets	33.3	33.1
Prepaid taxes on intercompany transfers of property	33.8	37.1
Other	9.6	16.8
Other Assets, Net	$ 189.1	$ 237.6

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Supplemental Financial Information (Accrued Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Supplemental Financial Information [Abstract]
Personnel costs	$ 104.2	$ 161.6
Deferred revenue	172.9	197.2
Taxes	79.6	70.8
Accrued interest	74.3	88.4
Derivative Liability, Current	14.9	21.6
Other	12.6	11.3
Accrued liabilities and other	$ 458.5	$ 550.9

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Supplemental Financial Information (Other Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Supplemental Financial Information [Abstract]
Deferred revenue	$ 143.5	$ 218.6
Unrecognized tax benefits (inclusive of interest and penalties)	153.4	149.7
Supplemental executive retirement plan liabilities	34.5	34.4
Deferred Tax Liabilities, Net, Noncurrent	8.7	4.4
Personnel costs	11.4	17.7
Other	10.2	24.4
Other liabilities	$ 361.7	$ 449.2

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Supplemental Financial Information (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Supplemental Financial Information [Abstract]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ 7.6	$ 7.8
Derivative Instruments	13.9	6.6
Other	(1.7)	(1.9)
Accumulated other comprehensive income	$ 19.8	$ 12.5

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Supplemental Financial Information Schedule of Revenue by Major Customers, by Reporting Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	100.00%	100.00%	100.00%	100.00%
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | ConocoPhillips [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	3.00%		4.00%
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | ConocoPhillips [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	23.00%	3.00%	15.00%	3.00%
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | Petrobras [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	9.00%	15.00%	12.00%	13.00%
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | Total S.A. [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	13.00%	10.00%	14.00%	9.00%
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | BP [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	10.00%	16.00%	12.00%	14.00%
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | BP [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	75.00%	79.00%	76.00%	82.00%
Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | Other Customers [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	45.00%	56.00%	47.00%	61.00%
Sales Revenue, Net [Member]
Revenue, Major Customer [Line Items]
Gain (Loss) on Contract Termination			$ 205.0
ENSCO DS-9 [Member] | Sales Revenue, Net [Member]
Revenue, Major Customer [Line Items]
Gain (Loss) on Contract Termination			$ 185.0

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Supplemental Financial Information Revenue from External Customers by Geographic Areas - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 909,600,000.00	$ 1,059,000,000.00	$ 1,723,600,000.00	$ 2,222,900,000.00
United Kingdom [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Revenues	69,700,000	104,300,000	143,500,000	224,900,000
US Gulf Of Mexico [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 304,500,000.00	$ 271,000,000.00	$ 464,700,000.00	$ 609,800,000.00
US Gulf Of Mexico [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	92.00%	83.00%	89.00%	84.00%
Angola [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 132,400,000	$ 182,400,000	$ 268,600,000	$ 351,700,000
Angola [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	88.00%	91.00%	87.00%	90.00%
Brazil [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member] | Floaters [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 81,700,000	$ 115,700,000	$ 202,700,000	$ 238,400,000
Other Geographic Areas [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 321,300,000.00	$ 385,600,000.00	644,100,000.00	$ 798,100,000.00
Sales Revenue, Net [Member]
Revenue, Major Customer [Line Items]
Gain (Loss) on Contract Termination			$ 205,000,000

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Guarantee Of Registered Securities (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Guarantor Obligations [Line Items]
Senior notes aggregate outstanding principal balance	$ 1,500.0
8.50% Senior Notes [Member]
Guarantor Obligations [Line Items]
Debt instrument interest rate stated percentage	8.50%	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%	6.875%
Senior note, maturity year	2020
7.875% Senior Notes [Member]
Guarantor Obligations [Line Items]
Debt instrument interest rate stated percentage	7.875%	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

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Guarantee Of Registered Securities (Condensed Consolidating Statements Of Income) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015
Guarantor Obligations [Line Items]
OPERATING REVENUES		$ 909.6		$ 1,059.0	$ 1,723.6	$ 2,222.9
Contract drilling (exclusive of depreciation)		350.2		502.6	713.9	1,020.9
Depreciation		112.4		140.5	225.7	277.6
General and administrative		27.4		29.7	50.8	59.8
OPERATING (LOSS) INCOME		419.6		386.2	733.2	864.6
OTHER INCOME (EXPENSE), NET		209.9		(55.4)	145.3	(128.0)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		629.5		330.8	878.5	736.6
INCOME TAX PROVISION		36.7		58.0	108.1	135.7
DISCONTINUED OPERATIONS, NET	$ (0.2)	(0.2)	$ (10.1)	(10.1)	(1.1)	(10.3)	$ (1.1)	$ (10.3)
NET INCOME		592.6		262.7	769.3	590.6
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(2.0)		(2.4)	(3.4)	(5.6)
NET INCOME ATTRIBUTABLE TO ENSCO		590.6		260.3	765.9	585.0
Ensco Plc [Member]
Guarantor Obligations [Line Items]
OPERATING REVENUES		7.6		8.7	14.8	17.4
Contract drilling (exclusive of depreciation)		6.7		6.3	13.9	13.1
Depreciation		0.0			0.0	0.1
General and administrative		10.5		13.7	16.7	27.0
OPERATING (LOSS) INCOME		(9.6)		(11.3)	(15.8)	(22.8)
OTHER INCOME (EXPENSE), NET		175.8		(36.3)	139.0	(96.2)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		166.2		(47.6)	123.2	(119.0)
INCOME TAX PROVISION					0.0
DISCONTINUED OPERATIONS, NET					0.0
EQUITY EARNINGS IN AFFILIATES, NET OF TAX		424.4		307.9	642.7	704.0
NET INCOME		590.6		260.3	765.9	585.0
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS					0.0
NET INCOME ATTRIBUTABLE TO ENSCO		590.6		260.3	765.9	585.0
ENSCO International Inc. [Member]
Guarantor Obligations [Line Items]
OPERATING REVENUES		36.5		34.5	72.1	69.3
Contract drilling (exclusive of depreciation)		36.4		34.5	72.1	69.3
Depreciation		4.4		2.4	8.7	4.9
General and administrative		0.0		0.0	0.1	0.1
OPERATING (LOSS) INCOME		(4.3)		(2.4)	(8.8)	(5.0)
OTHER INCOME (EXPENSE), NET		(8.3)		2.4	(6.7)	(14.4)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		(12.6)		0.0	(15.5)	(19.4)
INCOME TAX PROVISION		(15.6)		14.1	15.4	27.9
DISCONTINUED OPERATIONS, NET					0.0
EQUITY EARNINGS IN AFFILIATES, NET OF TAX		20.0		47.5	53.5	92.7
NET INCOME		23.0		33.4	22.6	45.4
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS					0.0
NET INCOME ATTRIBUTABLE TO ENSCO		23.0		33.4	22.6	45.4
Pride International, Inc. [Member]
Guarantor Obligations [Line Items]
OPERATING REVENUES		0.0			0.0
Contract drilling (exclusive of depreciation)					0.0
Depreciation					0.0
General and administrative					0.0
OTHER INCOME (EXPENSE), NET		(18.8)		(15.2)	(37.9)	(31.1)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		(18.8)		(15.2)	(37.9)	(31.1)
INCOME TAX PROVISION		0.0			0.0
DISCONTINUED OPERATIONS, NET					0.0
EQUITY EARNINGS IN AFFILIATES, NET OF TAX		10.2		71.4	63.8	135.3
NET INCOME		(8.6)		56.2	25.9	104.2
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS					0.0
NET INCOME ATTRIBUTABLE TO ENSCO		(8.6)		56.2	25.9	104.2
Other Non-Guarantor Subsidiaries Of Ensco [Member]
Guarantor Obligations [Line Items]
OPERATING REVENUES		937.4		1,086.6	1,780.7	2,278.2
Contract drilling (exclusive of depreciation)		379.0		532.6	771.9	1,080.5
Depreciation		108.0		138.1	217.0	272.6
General and administrative		16.9		16.0	34.0	32.7
OPERATING (LOSS) INCOME		433.5		399.9	757.8	892.4
OTHER INCOME (EXPENSE), NET		1.3		(6.3)	(9.0)	13.7
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		434.8		393.6	748.8	906.1
INCOME TAX PROVISION		52.3		43.9	92.7	107.8
DISCONTINUED OPERATIONS, NET		(0.2)		(10.1)	(1.1)	(10.3)
NET INCOME		382.3		339.6	655.0	788.0
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(2.0)		(2.4)	(3.4)	(5.6)
NET INCOME ATTRIBUTABLE TO ENSCO		380.3		337.2	651.6	782.4
Consolidating Adjustments [Member]
Guarantor Obligations [Line Items]
OPERATING REVENUES		(71.9)		(70.8)	(144.0)	(142.0)
Contract drilling (exclusive of depreciation)		(71.9)		(70.8)	(144.0)	(142.0)
Depreciation					0.0
General and administrative					0.0
OPERATING (LOSS) INCOME					0.0
OTHER INCOME (EXPENSE), NET		59.9			59.9
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		59.9			59.9
INCOME TAX PROVISION					0.0
DISCONTINUED OPERATIONS, NET					0.0
EQUITY EARNINGS IN AFFILIATES, NET OF TAX		(454.6)		(426.8)	(760.0)	(932.0)
NET INCOME		(394.7)		(426.8)	(700.1)	(932.0)
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS					0.0
NET INCOME ATTRIBUTABLE TO ENSCO		$ (394.7)		$ (426.8)	$ (700.1)	$ (932.0)

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Guarantee Of Registered Securities Guarantee Of Registered Securities (Condensed Consolidating Statements of Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
NET INCOME	$ 592.6	$ 262.7	$ 769.3	$ 590.6
OTHER COMPREHENSIVE INCOME (LOSS), NET:
Net change in fair value of derivatives	(4.1)	8.7	(0.6)	(8.7)
Reclassification of net (gains) losses on derivative instruments from other comprehensive income into net income	2.0	5.1	7.9	10.1
Other	0.1	(1.3)	0.0	1.3
NET OTHER COMPREHENSIVE (LOSS) INCOME	(2.0)	12.5	7.3	2.7
COMPREHENSIVE INCOME	590.6	275.2	776.6	593.3
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(2.0)	(2.4)	(3.4)	(5.6)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	588.6	272.8	773.2	587.7
Ensco Plc [Member]
NET INCOME	590.6	260.3	765.9	585.0
OTHER COMPREHENSIVE INCOME (LOSS), NET:
COMPREHENSIVE INCOME	590.6	260.3	765.9	585.0
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	590.6	260.3	765.9	585.0
ENSCO International Inc. [Member]
NET INCOME	23.0	33.4	22.6	45.4
OTHER COMPREHENSIVE INCOME (LOSS), NET:
Net change in fair value of derivatives	(4.1)	8.7	(0.6)	(8.7)
Reclassification of net (gains) losses on derivative instruments from other comprehensive income into net income	2.0	5.1	7.9	10.1
NET OTHER COMPREHENSIVE (LOSS) INCOME	(2.1)	13.8	7.3	1.4
COMPREHENSIVE INCOME	20.9	47.2	29.9	46.8
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	20.9	47.2	29.9	46.8
Pride International, Inc. [Member]
NET INCOME	(8.6)	56.2	25.9	104.2
OTHER COMPREHENSIVE INCOME (LOSS), NET:
COMPREHENSIVE INCOME	(8.6)	56.2	25.9	104.2
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	(8.6)	56.2	25.9	104.2
Other Non-Guarantor Subsidiaries Of Ensco [Member]
NET INCOME	382.3	339.6	655.0	788.0
OTHER COMPREHENSIVE INCOME (LOSS), NET:
Other	0.1	(1.3)	0.0	1.3
NET OTHER COMPREHENSIVE (LOSS) INCOME	0.1	(1.3)	0.0	1.3
COMPREHENSIVE INCOME	382.4	338.3	655.0	789.3
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(2.0)	(2.4)	(3.4)	(5.6)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	380.4	335.9	651.6	783.7
Consolidating Adjustments [Member]
NET INCOME	(394.7)	(426.8)	(700.1)	(932.0)
OTHER COMPREHENSIVE INCOME (LOSS), NET:
COMPREHENSIVE INCOME	(394.7)	(426.8)	(700.1)	(932.0)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ENSCO	$ (394.7)	$ (426.8)	$ (700.1)	$ (932.0)

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Guarantee Of Registered Securities (Condensed Consolidating Balance Sheets) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Guarantor Obligations [Line Items]
Cash and cash equivalents	$ 790.3	$ 121.3	$ 648.3	$ 664.8
Short-term Investments	1,010.0	1,180.0
Accounts receivable, net	408.0	582.0
Other	346.4	401.8
Total current assets	2,554.7	2,285.1
PROPERTY AND EQUIPMENT, AT COST	12,877.2	12,719.4
Less accumulated depreciation	1,856.0	1,631.6
Property and equipment, net	11,021.2	11,087.8	13,169.9
OTHER ASSETS, NET	189.1	237.6
TOTAL ASSETS	13,765.0	13,610.5
Accounts payable and accrued liabilities	610.8	775.5
Total current liabilities	610.8	775.5
LONG-TERM DEBT	4,905.6	5,868.6
Due to Related Parties, Noncurrent	0.0
Due to Related Parties		0.0
OTHER LIABILITIES	361.7	449.2
ENSCO SHAREHOLDERS' EQUITY	7,879.9	6,512.9
NONCONTROLLING INTERESTS	7.0	4.3
Total equity	7,886.9	6,517.2
Total liabilities and shareholders' equity	13,765.0	13,610.5
Ensco Plc [Member]
Guarantor Obligations [Line Items]
Cash and cash equivalents	712.8	94.0	334.6	287.4
Short-term Investments	1,010.0	1,180.0
Accounts receivable, net	5.2	1.2
Accounts receivable from affiliates	245.7	808.7
Other	0.1	0.2
Total current assets	1,973.8	2,084.1
PROPERTY AND EQUIPMENT, AT COST	1.8	1.8
Less accumulated depreciation	1.8	1.8
Property and equipment, net	0.0	0.0
DUE FROM AFFILIATES	1,428.5	1,303.7
INVESTMENTS IN AFFILIATES	8,412.1	7,743.8
OTHER ASSETS, NET	0.0	0.0
TOTAL ASSETS	11,814.4	11,131.6
Accounts payable and accrued liabilities	48.0	60.7
Accounts payable to affiliates	46.4	19.4
Total current liabilities	94.4	80.1
Due to Affiliate	791.1	751.9
LONG-TERM DEBT	3,041.8	3,782.4
Due to Related Parties, Noncurrent	0.0
Due to Related Parties		0.0
OTHER LIABILITIES		0.0
ENSCO SHAREHOLDERS' EQUITY	7,887.1	6,517.2
Total equity	7,887.1	6,517.2
Total liabilities and shareholders' equity	11,814.4	11,131.6
ENSCO International Inc. [Member]
Guarantor Obligations [Line Items]
Cash and cash equivalents	0.0	0.0	0.0	0.0
Short-term Investments	0.0	0.0
Accounts receivable, net	0.0
Accounts receivable from affiliates	637.7	237.3
Other	10.1	229.3
Total current assets	647.8	466.6
PROPERTY AND EQUIPMENT, AT COST	118.8	117.5
Less accumulated depreciation	55.7	47.7
Property and equipment, net	63.1	69.8
DUE FROM AFFILIATES	5,069.7	5,270.0
INVESTMENTS IN AFFILIATES	1,717.2	0.0
OTHER ASSETS, NET	40.0	43.1
TOTAL ASSETS	7,537.8	5,849.5
Accounts payable and accrued liabilities	32.1	69.6
Accounts payable to affiliates	591.2	176.3
Total current liabilities	623.3	245.9
Due to Affiliate	5,391.6	4,354.3
LONG-TERM DEBT	149.1	149.0
Due to Related Parties, Noncurrent	0.0
Due to Related Parties		442.0
OTHER LIABILITIES	150.2	135.7
ENSCO SHAREHOLDERS' EQUITY	1,223.6	522.6
Total equity	1,223.6	522.6
Total liabilities and shareholders' equity	7,537.8	5,849.5
Pride International, Inc. [Member]
Guarantor Obligations [Line Items]
Cash and cash equivalents	26.1	2.0	104.4	90.8
Short-term Investments	0.0	0.0
Accounts receivable, net	0.0
Accounts receivable from affiliates	0.0	0.0
Total current assets	26.1	2.0
DUE FROM AFFILIATES	2,043.1	2,035.5
INVESTMENTS IN AFFILIATES	0.0	0.0
TOTAL ASSETS	2,069.2	2,037.5
Accounts payable and accrued liabilities	30.9	34.8
Accounts payable to affiliates	3.8
Total current liabilities	34.7	34.8
Due to Affiliate	2,056.0	1,763.7
LONG-TERM DEBT	1,714.7	1,937.2
Due to Related Parties, Noncurrent	1,215.2
Due to Related Parties		1,319.3
OTHER LIABILITIES	0.0	0.0
ENSCO SHAREHOLDERS' EQUITY	(2,951.4)	(3,017.5)
Total equity	(2,951.4)	(3,017.5)
Total liabilities and shareholders' equity	2,069.2	2,037.5
Other Non-Guarantor Subsidiaries Of Ensco [Member]
Guarantor Obligations [Line Items]
Cash and cash equivalents	51.4	25.3	$ 209.3	$ 286.6
Short-term Investments	0.0	0.0
Accounts receivable, net	402.8	580.8
Accounts receivable from affiliates	565.8	148.1
Other	336.2	172.3
Total current assets	1,356.2	926.5
PROPERTY AND EQUIPMENT, AT COST	12,756.6	12,600.1
Less accumulated depreciation	1,798.5	1,582.1
Property and equipment, net	10,958.1	11,018.0
DUE FROM AFFILIATES	6,731.5	6,869.9
OTHER ASSETS, NET	290.5	324.9
TOTAL ASSETS	19,336.3	19,139.3
Accounts payable and accrued liabilities	499.8	610.4
Accounts payable to affiliates	807.8	998.4
Total current liabilities	1,307.6	1,608.8
Due to Affiliate	7,034.1	8,609.2
LONG-TERM DEBT	0.0	0.0
Due to Related Parties		0.0
OTHER LIABILITIES	352.9	443.9
ENSCO SHAREHOLDERS' EQUITY	10,634.7	8,473.1
NONCONTROLLING INTERESTS	7.0	4.3
Total equity	10,641.7	8,477.4
Total liabilities and shareholders' equity	19,336.3	19,139.3
Consolidating Adjustments [Member]
Guarantor Obligations [Line Items]
Short-term Investments	0.0	0.0
Accounts receivable, net	0.0
Accounts receivable from affiliates	(1,449.2)	(1,194.1)
Total current assets	(1,449.2)	(1,194.1)
DUE FROM AFFILIATES	(15,272.8)	(15,479.1)
INVESTMENTS IN AFFILIATES	(10,129.3)	(7,743.8)
OTHER ASSETS, NET	(141.4)	(130.4)
TOTAL ASSETS	(26,992.7)	(24,547.4)
Accounts payable to affiliates	(1,449.2)	(1,194.1)
Total current liabilities	(1,449.2)	(1,194.1)
Due to Affiliate	(15,272.8)	(15,479.1)
Due to Related Parties, Noncurrent	(1,215.2)
Due to Related Parties		(1,761.3)
OTHER LIABILITIES	(141.4)	(130.4)
ENSCO SHAREHOLDERS' EQUITY	(8,914.1)	(5,982.5)
Total equity	(8,914.1)	(5,982.5)
Total liabilities and shareholders' equity	$ (26,992.7)	$ (24,547.4)

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Guarantee Of Registered Securities (Condensed Consolidating Statements Of Cash Flows) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	$ 800.2	$ 891.0
INVESTING ACTIVITIES
Additions to property and equipment	(209.4)	(913.9)
Purchase of Affiliate Debt	0.0
Maturities of short-term investments	1,032.0	757.3
Payments to Acquire Marketable Securities	(862.0)	(650.0)
Other	7.6	1.1
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(31.8)	(805.5)
FINANCING ACTIVITIES
Proceeds from Issuance or Sale of Equity	585.5	0.0
Proceeds from Issuance of Senior Long-term Debt	0.0	1,078.7
Cash dividends paid	(5.5)	(70.5)
Payments for Advance to Affiliate	0.0
Reduction of long-term borrowings	(684.8)	(1,058.0)
Payments of Debt Issuance Costs	0.0	(10.5)
Advances from (to) affiliates		0.0
Payments of Debt Extinguishment Costs	0.0	(30.3)
Other	(1.9)	(6.8)
Net cash provided by (used in) financing activities	(106.7)	(97.4)
DISCONTINUED OPERATIONS
Operating activities	1.4	(4.2)
Investing activities	6.3	(0.6)
Net cash provided by discontinued operations	7.7	(4.8)
Effect of exchange rate changes on cash and cash equivalents	(0.4)	0.2
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	669.0	(16.5)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	121.3	664.8
CASH AND CASH EQUIVALENTS, END OF PERIOD	790.3	648.3
Ensco Plc [Member]
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	(83.4)	(66.2)
INVESTING ACTIVITIES
Additions to property and equipment	0.0
Purchase of Affiliate Debt	(142.0)
Maturities of short-term investments	1,032.0	712.0
Payments to Acquire Marketable Securities	(862.0)	(650.0)
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	28.0	62.0
FINANCING ACTIVITIES
Proceeds from Issuance or Sale of Equity	585.5
Proceeds from Issuance of Senior Long-term Debt		1,078.7
Cash dividends paid	(5.5)	(70.5)
Reduction of long-term borrowings	(542.8)	(998.3)
Payments of Debt Issuance Costs		(10.5)
Advances from (to) affiliates	(638.9)	(88.2)
Payments of Debt Extinguishment Costs		(27.2)
Other	(1.9)	(9.0)
Net cash provided by (used in) financing activities	674.2	51.4
DISCONTINUED OPERATIONS
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	618.8	47.2
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	94.0	287.4
CASH AND CASH EQUIVALENTS, END OF PERIOD	712.8	334.6
ENSCO International Inc. [Member]
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	130.8	(19.7)
INVESTING ACTIVITIES
Additions to property and equipment	0.0	(5.1)
Payments to Acquire Marketable Securities		0.0
Other	0.0	0.0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	0.0	(5.1)
FINANCING ACTIVITIES
Proceeds from Issuance or Sale of Equity	0.0
Proceeds from Issuance of Senior Long-term Debt		0.0
Cash dividends paid	0.0	0.0
Payments for Advance to Affiliate	(130.8)
Reduction of long-term borrowings	0.0	0.0
Payments of Debt Issuance Costs		0.0
Advances from (to) affiliates		(24.8)
Payments of Debt Extinguishment Costs		0.0
Other	0.0	0.0
Net cash provided by (used in) financing activities	(130.8)	24.8
DISCONTINUED OPERATIONS
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	0.0	0.0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	0.0	0.0
CASH AND CASH EQUIVALENTS, END OF PERIOD	0.0	0.0
Pride International, Inc. [Member]
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	(60.4)	(49.9)
INVESTING ACTIVITIES
Purchase of Affiliate Debt	0.0
Payments to Acquire Marketable Securities		0.0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	0.0	0.0
FINANCING ACTIVITIES
Proceeds from Issuance or Sale of Equity	0.0
Proceeds from Issuance of Senior Long-term Debt		0.0
Cash dividends paid	0.0	0.0
Reduction of long-term borrowings	0.0	0.0
Payments of Debt Issuance Costs		0.0
Advances from (to) affiliates	(84.5)	(63.5)
Payments of Debt Extinguishment Costs		0.0
Other	0.0	0.0
Net cash provided by (used in) financing activities	84.5	63.5
DISCONTINUED OPERATIONS
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	24.1	13.6
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	2.0	90.8
CASH AND CASH EQUIVALENTS, END OF PERIOD	26.1	104.4
Other Non-Guarantor Subsidiaries Of Ensco [Member]
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	813.2	1,026.8
INVESTING ACTIVITIES
Additions to property and equipment	(209.4)	(908.8)
Purchase of Affiliate Debt	0.0
Maturities of short-term investments	0.0	45.3
Payments to Acquire Marketable Securities	0.0	0.0
Other	7.6	1.1
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(201.8)	(862.4)
FINANCING ACTIVITIES
Proceeds from Issuance or Sale of Equity	0.0
Proceeds from Issuance of Senior Long-term Debt		0.0
Cash dividends paid	0.0	0.0
Payments for Advance to Affiliate	(592.6)	(176.5)
Reduction of long-term borrowings	0.0	(59.7)
Payments of Debt Issuance Costs		0.0
Payments of Debt Extinguishment Costs		(3.1)
Other	0.0	2.2
Net cash provided by (used in) financing activities	(592.6)	(237.1)
DISCONTINUED OPERATIONS
Operating activities	1.4	(4.2)
Investing activities	6.3	(0.6)
Net cash provided by discontinued operations	7.7	(4.8)
Effect of exchange rate changes on cash and cash equivalents	(0.4)	0.2
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	26.1	(77.3)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	25.3	286.6
CASH AND CASH EQUIVALENTS, END OF PERIOD	51.4	209.3
Consolidating Adjustments [Member]
OPERATING ACTIVITIES
Net cash (used in) provided by operating activities of continuing operations	0.0
INVESTING ACTIVITIES
Purchase of Affiliate Debt	142.0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	142.0	0.0
FINANCING ACTIVITIES
Proceeds from Issuance or Sale of Equity	0.0
Proceeds from Issuance of Senior Long-term Debt		0.0
Cash dividends paid	0.0	0.0
Payments for Advance to Affiliate	0.0
Reduction of long-term borrowings	(142.0)	0.0
Payments of Debt Issuance Costs		0.0
Advances from (to) affiliates		0.0
Payments of Debt Extinguishment Costs		0.0
Other	0.0	0.0
Net cash provided by (used in) financing activities	$ (142.0)	$ 0.0