Noble (NE) 10-Q 4 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 25, 2017
Document Information [Line Items]
Entity Registrant Name	Noble Corp plc
Trading Symbol	NE
Entity Central Index Key	1,458,891
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		244,903,025
Noble Corp [Member]
Document Information [Line Items]
Entity Registrant Name	Noble Corporation
Entity Central Index Key	1,169,055
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		261,245,693

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 602,977	$ 725,722
Accounts receivable, net	242,657	319,152
Taxes receivable	18,169	55,480
Prepaid expenses and other current assets	74,290	92,260
Total current assets	938,093	1,192,614
Property and equipment, at cost	12,410,857	12,364,888
Accumulated depreciation	(2,572,562)	(2,302,940)
Property and equipment, net	9,838,295	10,061,948
Other assets	248,709	185,555
Total assets	11,025,097	11,440,117
Current liabilities
Current maturities of long-term debt	249,475	299,882
Accounts payable	86,643	108,224
Accrued payroll and related costs	38,326	48,383
Taxes payable	89,738	46,561
Interest payable	99,662	61,299
Other current liabilities	84,610	68,944
Total current liabilities	648,454	633,293
Long-term debt	3,793,894	4,040,229
Deferred income taxes	212,526	2,084
Other liabilities	297,806	297,066
Total liabilities	4,952,680	4,972,672
Commitments and contingencies (Note 14)
Shareholders' equity
Common stock	2,449	2,432
Additional paid-in capital	665,014	654,168
Retained earnings	4,759,260	5,154,221
Accumulated other comprehensive loss	(50,354)	(52,140)
Total shareholders' equity	5,376,369	5,758,681
Noncontrolling interests	696,048	708,764
Total equity	6,072,417	6,467,445
Total liabilities and equity	11,025,097	11,440,117
Noble Corp [Member]
Current assets
Cash and cash equivalents	602,178	653,833
Accounts receivable, net	242,657	319,152
Taxes receivable	18,169	55,480
Prepaid expenses and other current assets	74,200	88,749
Total current assets	937,204	1,117,214
Property and equipment, at cost	12,410,857	12,364,888
Accumulated depreciation	(2,572,562)	(2,302,940)
Property and equipment, net	9,838,295	10,061,948
Other assets	248,794	178,552
Total assets	11,024,293	11,357,714
Current liabilities
Current maturities of long-term debt	249,475	299,882
Accounts payable	86,414	107,868
Accrued payroll and related costs	38,340	48,319
Taxes payable	89,312	46,561
Interest payable	99,662	61,299
Other current liabilities	84,478	67,312
Total current liabilities	647,681	631,241
Long-term debt	3,793,894	4,040,229
Deferred income taxes	212,526	2,084
Other liabilities	297,806	292,183
Total liabilities	4,951,907	4,965,737
Commitments and contingencies (Note 14)
Shareholders' equity
Common stock	26,125	26,125
Additional paid-in capital	609,245	594,091
Retained earnings	4,791,322	5,115,137
Accumulated other comprehensive loss	(50,354)	(52,140)
Total shareholders' equity	5,376,338	5,683,213
Noncontrolling interests	696,048	708,764
Total equity	6,072,386	6,391,977
Total liabilities and equity	$ 11,024,293	$ 11,357,714

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares shares in Thousands	Jun. 30, 2017	Dec. 31, 2016
Ordinary shares, shares outstanding	244,903	243,239
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Noble Corp [Member]
Ordinary shares, shares outstanding	261,246	261,246
Common stock, par value (usd per share)	$ 0.01	$ 0.01

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating revenues
Contract drilling services	$ 271,532	$ 876,697	$ 626,191	$ 1,468,064
Reimbursables	6,599	17,933	14,903	38,539
Other	11	153	24	153
Total operating revenues	278,142	894,783	641,118	1,506,756
Operating costs and expenses
Contract drilling services	162,371	244,176	322,756	495,424
Reimbursables	4,394	14,298	9,540	30,304
Depreciation and amortization	136,594	150,946	272,312	300,665
General and administrative	18,658	19,033	34,538	38,573
Loss on impairment	0	16,616	0	16,616
Total operating costs and expenses	322,017	445,069	639,146	881,582
Operating income (loss)	(43,875)	449,714	1,972	625,174
Other income (expense)
Interest expense, net of amount capitalized	(73,209)	(57,306)	(146,656)	(114,406)
Gain on extinguishment of debt, net	0	11,066	0	11,066
Interest income and other, net	2,664	(1,253)	3,897	(1,983)
Income (loss) from continuing operations before income taxes	(114,420)	402,221	(140,787)	519,851
Income tax benefit (provision)	18,213	(56,822)	(239,194)	(50,319)
Net income (loss) from continuing operations	(96,207)	345,399	(379,981)	469,532
Net loss from discontinued operations, net of tax	(1,486)	0	(1,486)	0
Net income (loss)	(97,693)	345,399	(381,467)	469,532
Net (income) loss attributable to noncontrolling interests	4,343	(22,533)	(13,577)	(41,181)
Net income (loss) attributable to the company	(93,350)	322,866	(395,044)	428,351
Income (loss) from continuing operations	(91,864)	322,866	(393,558)	428,351
Net loss from discontinued operations, net of tax	$ (1,486)	$ 0	$ (1,486)	$ 0
Basic:
Income (loss) from continuing operations (usd per share)	$ (0.37)	$ 1.28	$ (1.61)	$ 1.70
Loss from discontinued operations (usd per share)	(0.01)	0	(0.01)	0
Net income (loss) attributable to Noble Corporation plc (usd per share)	(0.38)	1.28	(1.62)	1.70
Diluted:
Income (loss) from continuing operations (usd per share)	(0.37)	1.28	(1.61)	1.70
Loss from discontinued operations (usd per share)	(0.01)	0	(0.01)	0
Net income (loss) attributable to Noble-UK (usd per share)	$ (0.38)	$ 1.28	$ (1.62)	$ 1.70
Noble Corp [Member]
Operating revenues
Contract drilling services	$ 271,532	$ 876,697	$ 626,191	$ 1,468,064
Reimbursables	6,599	17,933	14,903	38,539
Other	11	253	24	853
Total operating revenues	278,142	894,883	641,118	1,507,456
Operating costs and expenses
Contract drilling services	161,857	242,234	321,873	491,524
Reimbursables	4,394	14,298	9,540	30,304
Depreciation and amortization	134,633	150,938	270,351	300,611
General and administrative	13,231	13,853	22,295	24,458
Loss on impairment	0	16,616	0	16,616
Total operating costs and expenses	314,115	437,939	624,059	863,513
Operating income (loss)	(35,973)	456,944	17,059	643,943
Other income (expense)
Interest expense, net of amount capitalized	(73,209)	(57,306)	(146,656)	(114,406)
Gain on extinguishment of debt, net	0	11,066	0	11,066
Interest income and other, net	2,728	(1,203)	3,847	(1,936)
Income (loss) from continuing operations before income taxes	(106,454)	409,501	(125,750)	538,667
Income tax benefit (provision)	18,213	(56,120)	(239,160)	(49,617)
Net income (loss) from continuing operations	(88,241)	353,381	(364,910)	489,050
Net loss from discontinued operations, net of tax	2,967	0	2,967	0
Net income (loss)	(85,274)	353,381	(361,943)	489,050
Net (income) loss attributable to noncontrolling interests	4,343	(22,533)	(13,577)	(41,181)
Net income (loss) attributable to the company	$ (80,931)	$ 330,848	$ (375,520)	$ 447,869

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income (loss)	$ (97,693)	$ 345,399	$ (381,467)	$ 469,532
Other comprehensive income (loss)
Foreign currency translation adjustments	94	38	280	806
Foreign currency forward contracts	849	(2,054)	739	(1,068)
Amortization of deferred pension plan amounts (net of tax provision of $161 and $410 for the three months ended June 30, 2017 and 2016, respectively, and $328 and $819 for the six months ended June 30, 2017 and 2016, respectively)	375	784	767	1,567
Other comprehensive income (loss), net	1,318	(1,232)	1,786	1,305
Net comprehensive (income) loss attributable to noncontrolling interests	4,343	(22,533)	(13,577)	(41,181)
Comprehensive income (loss) attributable to the company	(92,032)	321,634	(393,258)	429,656
Noble Corp [Member]
Net income (loss)	(85,274)	353,381	(361,943)	489,050
Other comprehensive income (loss)
Foreign currency translation adjustments	94	38	280	806
Foreign currency forward contracts	849	(2,054)	739	(1,068)
Amortization of deferred pension plan amounts (net of tax provision of $161 and $410 for the three months ended June 30, 2017 and 2016, respectively, and $328 and $819 for the six months ended June 30, 2017 and 2016, respectively)	375	784	767	1,567
Other comprehensive income (loss), net	1,318	(1,232)	1,786	1,305
Net comprehensive (income) loss attributable to noncontrolling interests	4,343	(22,533)	(13,577)	(41,181)
Comprehensive income (loss) attributable to the company	$ (79,613)	$ 329,616	$ (373,734)	$ 449,174

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Amortization of deferred pension plan, tax provision	$ 161	$ 410	$ 328	$ 819
Noble Corp [Member]
Amortization of deferred pension plan, tax provision	$ 161	$ 410	$ 328	$ 819

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net income (loss)	$ (381,467)	$ 469,532
Adjustments to reconcile net income to net cash flow from operating activities:
Depreciation and amortization	272,312	300,665
Loss on impairment	0	16,616
Gain on extinguishment of debt, net	0	(11,066)
Deferred income taxes	303,084	(100,408)
Amortization of share-based compensation	15,187	19,565
Other long-term asset write-off	14,419	0
Net change in other assets and liabilities	30,750	164,319
Net cash provided by operating activities	254,285	859,223
Cash flows from investing activities
Capital expenditures	(48,957)	(120,531)
Change in accrued capital expenditures	(18,651)	(38,378)
Proceeds from disposal of assets	314	21,190
Net cash used in investing activities	(67,294)	(137,719)
Cash flows from financing activities
Repayments of debt	(300,000)	(322,207)
Debt issuance costs on senior notes and credit facility	(42)	0
Premiums paid on early repayment of long-term debt	0	(1,781)
Dividend payments	0	(42,542)
Dividends paid to noncontrolling interests	(5,393)	(41,088)
Employee stock transactions	(4,301)	(3,153)
Net cash used in financing activities	(309,736)	(410,771)
Net increase (decrease) in cash and cash equivalents	(122,745)	310,733
Cash and cash equivalents, beginning of period	725,722	512,245
Cash and cash equivalents, end of period	602,977	822,978
Noble Corp [Member]
Cash flows from operating activities
Net income (loss)	(361,943)	489,050
Adjustments to reconcile net income to net cash flow from operating activities:
Depreciation and amortization	270,351	300,611
Loss on impairment	0	16,616
Gain on extinguishment of debt, net	0	(11,066)
Deferred income taxes	303,084	(100,408)
Capital contribution by parent - share-based compensation	15,154	17,653
Other long-term asset write-off	14,419	0
Net change in other assets and liabilities	28,304	166,837
Net cash provided by operating activities	269,369	879,293
Cash flows from investing activities
Capital expenditures	(48,957)	(120,531)
Change in accrued capital expenditures	(18,651)	(38,378)
Proceeds from disposal of assets	314	21,190
Net cash used in investing activities	(67,294)	(137,719)
Cash flows from financing activities
Repayments of debt	(300,000)	(322,207)
Debt issuance costs on senior notes and credit facility	(42)	0
Premiums paid on early repayment of long-term debt	0	(1,781)
Dividends paid to noncontrolling interests	(5,393)	(41,088)
Contributions (distributions) from (to) parent company, net	51,705
Contributions (distributions) from (to) parent company, net		(65,316)
Net cash used in financing activities	(253,730)	(430,392)
Net increase (decrease) in cash and cash equivalents	(51,655)	311,182
Cash and cash equivalents, beginning of period	653,833	511,795
Cash and cash equivalents, end of period	$ 602,178	$ 822,977

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Shares [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]	Noble Corp [Member]	Noble Corp [Member]Shares [Member]	Noble Corp [Member]Additional Paid-in Capital [Member]	Noble Corp [Member]Retained Earnings [Member]	Noble Corp [Member]Accumulated Other Comprehensive Loss [Member]	Noble Corp [Member]Noncontrolling Interests [Member]
Beginning balance at Dec. 31, 2015	$ 7,422,230	$ 2,420	$ 628,483	$ 6,131,501	$ (63,175)	$ 723,001	$ 7,414,471	$ 26,125	$ 561,309	$ 6,167,211	$ (63,175)	$ 723,001
Beginning Balance, Shares at Dec. 31, 2015		241,977						261,246
Employee related equity activity
Amortization of share-based compensation	19,565		19,565
Issuance of share-based compensation shares	(3,573)	$ 12	(3,585)
Issuance of share-based compensation shares, Shares		1,241
Tax benefit of equity transactions	(5,499)		(5,499)
Net income (loss)	469,532			428,351		41,181	489,050			447,869		41,181
Dividends paid to noncontrolling interests	(41,088)					(41,088)	(41,088)					(41,088)
Dividends	(42,691)			(42,691)			(65,316)			(65,316)
Capital contribution by parent - share- based compensation							17,653		17,653
Other comprehensive income, net	1,305				1,305		1,305				1,305
Ending Balance at Jun. 30, 2016	7,819,781	$ 2,432	638,964	6,517,161	(61,870)	723,094	7,816,075	$ 26,125	578,962	6,549,764	(61,870)	723,094
Ending Balance, Shares at Jun. 30, 2016		243,218						261,246
Beginning balance at Dec. 31, 2016	$ 6,467,445	$ 2,432	654,168	5,154,221	(52,140)	708,764	$ 6,391,977	$ 26,125	594,091	5,115,137	(52,140)	708,764
Beginning Balance, Shares at Dec. 31, 2016	243,239	243,239					261,246	261,246
Employee related equity activity
Amortization of share-based compensation	$ 15,187		15,187
Issuance of share-based compensation shares	(6)	$ 17	(23)
Issuance of share-based compensation shares, Shares		1,664
Shares withheld for taxes on equity transactions	(4,318)		(4,318)
Net income (loss)	(381,467)			(395,044)		13,577	$ (361,943)			(375,520)		13,577
Dividends paid to noncontrolling interests	(26,293)					(26,293)	(26,293)					(26,293)
Dividends	83			83			51,705			51,705
Capital contribution by parent - share- based compensation							15,154		15,154
Other comprehensive income, net	1,786				1,786		1,786				1,786
Ending Balance at Jun. 30, 2017	$ 6,072,417	$ 2,449	$ 665,014	$ 4,759,260	$ (50,354)	$ 696,048	$ 6,072,386	$ 26,125	$ 609,245	$ 4,791,322	$ (50,354)	$ 696,048
Ending Balance, Shares at Jun. 30, 2017	244,903	244,903					261,246	261,246

Organization and Basis of Prese

Organization and Basis of Presentation	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	Note 1— Organization and Basis of Presentation Noble Corporation plc, a public limited company incorporated under the laws of England and Wales (“Noble-UK”), is a leading offshore drilling contractor for the oil and gas industry. We perform contract drilling services with our global fleet of mobile offshore drilling units. As of June 30, 2017 , our fleet consisted of 14 jackups, eight drillships and six semisubmersibles. We report our contract drilling operations as a single reportable segment, Contract Drilling Services, which reflects how we manage our business, and the fact that all of our drilling fleet is dependent upon the worldwide oil and gas industry. The mobile offshore drilling units comprising our offshore rig fleet operate in a global market for contract drilling services and are often redeployed to different regions due to changing demands of our customers, which consist largely of major independent and government-owned or controlled oil and gas companies throughout the world. As of June 30, 2017 , our contract drilling services segment conducted operations in the United States, the North Sea, the Middle East and Asia. Noble and its predecessors have been engaged in the contract drilling of oil and gas wells since 1921. Noble Corporation, a Cayman Islands company (“Noble-Cayman”), is an indirect, wholly-owned subsidiary of Noble-UK, our publicly-traded parent company. Noble-UK’s principal asset is all of the shares of Noble-Cayman. Noble-Cayman has no public equity outstanding. The condensed consolidated financial statements of Noble-UK include the accounts of Noble-Cayman, and Noble-UK conducts substantially all of its business through Noble-Cayman and its subsidiaries. The accompanying unaudited condensed consolidated financial statements of Noble-UK and Noble-Cayman have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) as they pertain to Quarterly Reports on Form 10-Q. Accordingly, certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. The unaudited financial statements reflect all adjustments which are, in the opinion of management, necessary for a fair statement of the financial position and results of operations for the interim periods, on a basis consistent with the annual audited condensed consolidated financial statements. All such adjustments are of a recurring nature. The December 31, 2016 Condensed Consolidated Balance Sheets presented herein are derived from the December 31, 2016 audited consolidated financial statements, but does not include all disclosures required by GAAP. These interim financial statements should be read in conjunction with the consolidated financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2016 , filed by both Noble-UK and Noble-Cayman. The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year. Certain amounts in prior periods have been reclassified to conform to the current year presentation. In accordance with our adoption of Accounting Standards Update (“ASU”) No. 2016-9, prior period excess tax benefits of approximately $5.5 million , previously classified as a financing activity in “Employee stock transactions” on the June 30, 2016 Condensed Consolidated Statement of Cash Flows, are now classified as an operating activity in “Net change in other assets and liabilities” on the accompanying Condensed Consolidated Statement of Cash Flows for the comparative period. Prior period shares withheld for taxes on employee stock transactions of approximately $3.2 million , previously classified as an operating activity in “Net change in other assets and liabilities" on the June 30, 2016 Condensed Consolidated Statement of Cash Flows, are now classified as a financing activity in “Employee stock transactions” on the accompanying Condensed Consolidated Statement of Cash Flows for the comparative period.

Spin-off of Paragon Offshore pl

Spin-off of Paragon Offshore plc ("Paragon Offshore")	6 Months Ended
	Jun. 30, 2017
Spin-off [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Spin-off of Paragon Offshore plc ("Paragon Offshore")	Note 2— Spin-off of Paragon Offshore plc ("Paragon Offshore") On August 1, 2014, Noble-UK completed the separation and spin-off of a majority of its standard specification offshore drilling business (the “Spin-off”) through a pro rata distribution of all of the ordinary shares of its wholly-owned subsidiary, Paragon Offshore, to the holders of Noble’s ordinary shares. In February 2016, Paragon Offshore sought approval of a pre-negotiated plan of reorganization (the "Prior Plan") by filing for voluntary relief under Chapter 11 of the United States Bankruptcy Code. As part of the Prior Plan, we entered into a settlement agreement with Paragon Offshore (the “Settlement Agreement”) under which, in exchange for a full and unconditional release of any claims by Paragon Offshore in connection with the Spin-off (including fraudulent conveyance claims that could be brought on behalf of Paragon Offshore’s creditors), we agreed to provide certain tax bonding in Mexico as well as assume certain tax liabilities and the administration of Mexican tax claims for a specified number of years. The bonding to be provided by Noble-UK was a key benefit to Paragon Offshore of the Settlement Agreement, which was subject to bankruptcy court confirmation as part of a bankruptcy plan. The Prior Plan was rejected by the bankruptcy court in October 2016. In April 2017, Paragon Offshore filed an updated disclosure statement and a revised plan of reorganization (the “New Plan”) in its bankruptcy proceeding. Under the New Plan, including Paragon Offshore ’s revised business plan, Paragon Offshore no longer needed the Mexican tax bonding that Noble-UK was to provide under the Settlement Agreement . As a result, the Settlement Agreement was no longer applicable to the ongoing business of Paragon Offshore. Consequently, Paragon Offshore abandoned the Settlement Agreement as part of the New Plan, and the Settlement Agreement was terminated at the time of the filing of the New Plan. On May 2, 2017, Paragon Offshore announced that it had reached an agreement in principle with both its secured and unsecured creditors to revise the New Plan to, among other things, create and fund a $10.0 million litigation trust to pursue litigation against us. On June 7, 2017, the revised New Plan was approved by the bankruptcy court and Paragon Offshore emerged from bankruptcy on July 18, 2017 . We expect Paragon Offshore or its creditors will use the litigation trust to pursue claims against us relating to the Spin-off, including alleged fraudulent conveyance claims. We continue to believe that Paragon Offshore, at the time of the Spin-off, was properly funded, solvent and had appropriate liquidity and that any fraudulent conveyance claim or other claim related to the Spin-off that may be brought by Paragon Offshore or its creditors, would be without merit and would be contested vigorously by us. Prior to the completion of the Spin-off, Noble-UK and Paragon Offshore entered into a series of agreements to effect the separation and Spin-off and govern the relationship between the parties after the Spin-off (the "Separation Agreements"), including the Master Separation Agreement (the "MSA") and the Tax Sharing Agreement (the "TSA"). As part of its final bankruptcy plan, Paragon Offshore rejected the Separation Agreements. Accordingly, the indemnity obligations that Paragon Offshore potentially would have owed us under the Separation Agreements have now terminated, including indemnities arising under the MSA and the TSA in respect of obligations related to Paragon Offshore’s business that were incurred through Noble-retained entities prior to the Spin-off. Likewise, any potential indemnity obligations that we would have owed Paragon Offshore under the Separation Agreements, including those under the MSA and the TSA in respect of Noble-UK’s business that was conducted prior to the Spin-off through Paragon Offshore-retained entities, are now also extinguished. In the absence of the Separation Agreements, liabilities relating to the respective parties will be borne by the owner of the legal entity or asset at issue and neither party will look to an allocation based on the historic relationship of an entity or asset to one of the party’s business, as had been the case under the Separation Agreements. The rejection and ultimate termination of the indemnity and related obligations under the Separation Agreements has resulted in a number of accounting charges and benefits in this period and such termination may continue to affect us in the future as liabilities arise for which we would have been indemnified by Paragon Offshore or would have had to indemnify Paragon Offshore. We do not expect that, overall, the rejection of the Separation Agreements by Paragon Offshore will have a material adverse effect on our financial condition or liquidity. However, any loss we experience with respect to which we would have been able to secure indemnification from Paragon Offshore under one or more of the Separation Agreements could have an adverse impact on our results of operations in any period, which impact may be material depending on our results of operations during this down-cycle. For the three and six months ended June 30, 2017 , we recognized net charges of $15.9 million , with a non-cash loss of $1.5 million recorded in "Net loss from discontinued operations, net of tax" on our Condensed Consolidated Statement of Operations relating to the emergence from bankruptcy of Paragon Offshore. For more information on the Separation Agreements, see our Annual Report on Form 10-K for the year ended December 31, 2016.

Consolidated Joint Ventures

Consolidated Joint Ventures	6 Months Ended
	Jun. 30, 2017
Noncontrolling Interest [Abstract]
Consolidated Joint Ventures	Note 3— Consolidated Joint Ventures We maintain a 50 percent interest in two joint ventures, each with a subsidiary of Royal Dutch Shell plc (“Shell”), that own and operate the two Bully -class drillships. We have determined that we are the primary beneficiary of the joint ventures. Accordingly, we consolidate the entities in our condensed consolidated financial statements after eliminating intercompany transactions. Shell’s equity interests are presented as noncontrolling interests on our Condensed Consolidated Balance Sheets. During the six months ended June 30, 2017 , the Bully joint ventures approved dividends totaling $52.6 million and paid dividends totaling $10.8 million . During the six months ended June 30, 2016 , the Bully joint ventures approved and paid dividends totaling $82.2 million . Of these amounts, 50 percent was paid to our joint venture partner. The combined carrying amount of the Bully -class drillships at both June 30, 2017 and December 31, 2016 totaled $1.4 billion . These assets were primarily funded through partner equity contributions. Cash held by the Bully joint ventures totaled approximately $83.3 million at June 30, 2017 as compared to approximately $34.7 million at December 31, 2016 .

Share Data

Share Data	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Share Data	Note 4— Share Data Earnings per share The following table presents the computation of basic and diluted earnings per share for Noble-UK: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Numerator: Basic Net income (loss) attributable to Noble-UK $ (93,350 ) $ 322,866 $ (395,044 ) $ 428,351 Net loss from discontinued operations, net of tax 1,486 — 1,486 — Earnings allocated to unvested share-based payment awards — (11,577 ) — (15,371 ) Net income (loss) from continuing operations to common shareholders - basic $ (91,864 ) $ 311,289 $ (393,558 ) $ 412,980 Diluted Net income (loss) attributable to Noble-UK $ (93,350 ) $ 322,866 $ (395,044 ) $ 428,351 Net loss from discontinued operations, net of tax 1,486 — 1,486 — Net income (loss) from continuing operations to common shareholders - diluted $ (91,864 ) $ 322,866 $ (393,558 ) $ 428,351 Denominator: Weighted average shares outstanding - basic 244,828 243,217 244,527 243,021 Incremental shares issuable from assumed exercise of stock options and outstanding unvested share-based payment awards — 9,045 — 9,045 Weighted average shares outstanding - diluted 244,828 252,262 244,527 252,066 Earnings per share Basic: Income (loss) from continuing operations $ (0.37 ) $ 1.28 $ (1.61 ) $ 1.70 Loss from discontinued operations (0.01 ) — (0.01 ) — Net income (loss) attributable to Noble-UK $ (0.38 ) $ 1.28 $ (1.62 ) $ 1.70 Diluted: Income (loss) from continuing operations $ (0.37 ) $ 1.28 $ (1.61 ) $ 1.70 Loss from discontinued operations (0.01 ) — (0.01 ) — Net income (loss) attributable to Noble-UK $ (0.38 ) $ 1.28 $ (1.62 ) $ 1.70 Dividends per share $ — $ 0.02 $ — $ 0.17 Only those items having a dilutive impact on our basic earnings per share are included in diluted earnings per share. For the three months ended June 30, 2017 and 2016 , approximately 1.3 million and 1.6 million shares underlying stock options, respectively, were excluded from the diluted earnings per share as such stock options were anti-dilutive. For both the three and six months ended June 30, 2017 , we experienced net losses from continuing operations and as a result approximately 11.3 million outstanding unvested share-based payment awards were excluded from the earnings per share calculation, as such awards were anti-dilutive. Share capital As of June 30, 2017 , Noble-UK had approximately 244.9 million shares outstanding and trading as compared to approximately 243.2 million shares outstanding and trading at December 31, 2016 . Our Board of Directors may increase our share capital through the issuance of up to 53.0 million authorized shares (at current nominal value of $0.01 per share) without obtaining shareholder approval. The declaration and payment of dividends require authorization of the Board of Directors of Noble-UK, provided that such dividends on issued share capital may be paid only out of Noble-UK’s “distributable reserves” on its statutory balance sheet. Noble-UK is not permitted to pay dividends out of share capital, which includes share premiums. The resumption of the payment of future dividends will depend on our results of operations, financial condition, cash requirements, future business prospects, contractual restrictions and other factors deemed relevant by our Board of Directors. Share repurchases Under UK law, the Company is only permitted to purchase its own shares by way of an “off-market purchase” in a plan approved by shareholders. We do not currently have shareholder authority to repurchase shares, as our approval to repurchase up to 37.0 million ordinary shares expired on April 22, 2016 . During the three and six months ended June 30, 2017 , we did not repurchase any of our shares.

Contract Settlement and Termina

Contract Settlement and Termination Agreement with Freeport-McMoRan Inc	6 Months Ended
	Jun. 30, 2017
Contract Settlement And Termination Agreement [Abstract]
Contract Settlement and Termination Agreement with Freeport-McMoRan Inc.	Note 5— Contract Settlement and Termination Agreement with Freeport-McMoRan Inc. On May 10, 2016, Freeport-McMoRan Inc. (“Freeport”), Freeport-McMoRan Oil & Gas LLC and one of our subsidiaries entered into an agreement terminating the contracts on the Noble Sam Croft and Noble Tom Madden (“FCX Settlement”), which were scheduled to end in July 2017 and November 2017, respectively. Pursuant to the FCX Settlement, Noble could have received contingent payments based upon the average price of oil over a 12-month period from June 30, 2016 through June 30, 2017. These contingent payments were not designated for hedge accounting treatment under FASB standards, and therefore, the change in fair value was recognized as a loss in the accompanying Condensed Consolidated Statements of Operations. For the three and six months ended June 30, 2017 , we recognized losses of approximately $6.5 million and $14.4 million , respectively, in “Contract drilling services revenue,” related to the valuation of these contingent payments. As of June 30, 2017 , the average price of oil did not meet the FCX Settlement's threshold during the 12-month period. Accordingly, as of June 30, 2017 , the fair value of these contingent payments was reduced to zero , as the period for earning the contingent payments had ended. (See Note 11— Derivative Instruments and Hedging Activities and Note 12— Fair Value of Financial Instruments for additional information).

Receivables from Customers

Receivables from Customers	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Receivables from Customers	Note 6— Receivables from Customers In prior periods, we had receivables of approximately $14.4 million related to the Noble Max Smith , which had been disputed by our former customer, Petróleos Mexicanos (“Pemex”) and were classified as long-term and included in "Other assets" on our Condensed Consolidated Balance Sheet. The receivables were related to lost revenues for downtime that occurred after our rig was damaged when one of Pemex's supply boats collided with our rig in 2010. Paragon Offshore has announced that, as part of its bankruptcy plan, it will liquidate the Mexican entity currently prosecuting the Noble Max Smith claim against Pemex. While Noble owns all rights to amounts from that claim and will take available actions to recover such amounts, we believe the announced actions by Paragon Offshore creates uncertainty relating to the prosecution of the claim and associated recovery, and accordingly, the disputed amounts of approximately $14.4 million were written off through "Contract drilling services costs" on the accompanying Condensed Consolidated Statements of Operations as of June 30, 2017 .

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 30, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment	Note 7— Property and Equipment Property and equipment, at cost, as of June 30, 2017 and December 31, 2016 for Noble-UK consisted of the following: June 30, 2017 December 31, 2016 Drilling equipment and facilities $ 12,128,734 $ 12,048,571 Construction in progress 78,345 112,103 Other 203,778 204,214 Property and equipment, at cost $ 12,410,857 $ 12,364,888 Capital expenditures, including capitalized interest, totaled $49.0 million and $120.5 million for the six months ended June 30, 2017 and 2016 , respectively. There was no capitalized interest for the six months ended June 30, 2017 , due to the completion of our newbuild program. Capitalized interest was $3.6 million and $7.4 million for the three and six months ended June 30, 2016 , respectively.

Debt

Debt	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Debt	Note 8— Debt Our total debt consisted of the following at June 30, 2017 and December 31, 2016 : June 30, 2017 December 31, 2016 Senior unsecured notes 2.50% Senior Notes due March 2017 $ — $ 299,992 5.75% Senior Notes due March 2018 249,864 249,771 7.50% Senior Notes due March 2019 201,695 201,695 4.90% Senior Notes due August 2020 167,600 167,576 4.625% Senior Notes due March 2021 208,552 208,538 3.95% Senior Notes due March 2022 125,503 125,488 7.75% Senior Notes due January 2024 981,187 980,117 7.70% Senior Notes due April 2025 448,958 448,909 6.20% Senior Notes due August 2040 399,899 399,898 6.05% Senior Notes due March 2041 397,779 397,758 5.25% Senior Notes due March 2042 498,384 498,369 8.70% Senior Notes due April 2045 394,636 394,613 Total debt 4,074,057 4,372,724 Less: Unamortized debt issuance costs (30,688 ) (32,613 ) Less: Current maturities of long-term debt (1) (249,475 ) (299,882 ) Long-term debt, net of debt issuance costs $ 3,793,894 $ 4,040,229 (1) Presented net of current portion of unamortized debt issuance costs of $0.4 million and $0.1 million at June 30, 2017 and December 31, 2016 , respectively. Credit Facility and Commercial Paper Program We currently have a five -year $2.4 billion senior unsecured credit facility that matures in January 2020 and is guaranteed by our indirect, wholly owned subsidiaries, Noble Holding (U.S.) LLC ("NHUS") and Noble Holding International Limited ("NHIL"). The credit facility provides us with the ability to issue up to $500.0 million in letters of credit. The issuance of letters of credit under the facility reduces the amount available for borrowing. Throughout the term of the credit facility, we pay a facility fee on the daily unused amount of the underlying commitment which ranges from 0.1 percent to 0.35 percent depending on our debt ratings. At June 30, 2017 , based on our debt ratings on that date, the facility fee was 0.35 percent. At June 30, 2017 , we had no borrowings outstanding or letters of credit issued. In addition, our credit facility has provisions which vary the applicable interest rates based upon our debt ratings. At June 30, 2017 , the interest rate in effect is the highest permitted interest rate under the credit facility. Debt Issuances In December 2016, we issued $1.0 billion aggregate principal amount of 7.75% Senior Notes, which we issued through our indirect wholly-owned subsidiary, NHIL. The net proceeds of approximately $967.6 million , after estimated expenses, were primarily used to retire debt related to our tender offer and the remaining portion will be used for general corporate purposes. Senior Notes Interest Rate Adjustments During 2016 and to date in 2017, we experienced debt rating downgrades by Moody’s Investors Service and S&P Global Ratings, which reduced our debt ratings below investment grade. As a result of these downgrades, we experienced interest rate increases during 2016 and 2017 on our Senior Notes due 2018 , 2025 and 2045 , all of which are subject to provisions that vary the applicable interest rates if our debt rating falls below investment grade, with continued adjustments up to a contractually-defined maximum interest rate increase set for each rating agency. On April 28, 2017, Moody’s Investors Service reduced our debt rating. However, there was no further increase in the interest rates on these Senior Notes because we have reached the contractually-defined maximum interest rate increase in respect of Moody’s Investors Service downgrades. The interest rates on these Senior Notes may be further increased if our debt ratings were to be downgraded further by S&P Global Ratings (up to a maximum of an additional 25 basis points) or decreased if our debt ratings were to be raised by either rating agency above specified levels. Our other outstanding senior notes, including the Senior Notes due 2024 issued in December 2016, do not contain provisions varying applicable interest rates based upon our credit rating. Debt Tender Offers and Repayments In December 2016, we commenced cash tender offers for our 4.90% Senior Notes due 2020 , of which $467.8 million principal amount was outstanding, our 4.625% Senior Notes due 2021 , of which $396.6 million principal amount was outstanding and our 3.95% Senior Notes due 2022 , of which $400.0 million principal amount was outstanding. On December 28, 2016, we purchased $762.3 million of these Senior Notes for $750.0 million , plus accrued interest, using a portion of the net proceeds of the $1.0 billion Senior Notes due 2024 issuance in December 2016. In December 2016, as a result of this transaction, we recognized a net gain of approximately $6.7 million . In March 2016, we commenced cash tender offers for our 4.90% Senior Notes due 2020 , of which $500.0 million principal amount was outstanding, and our 4.625% Senior Notes due 2021 , of which $400.0 million principal amount was outstanding. On April 1, 2016, we purchased $36.0 million of these Senior Notes for $24.0 million , plus accrued interest, using cash on hand. In April 2016, as a result of this transaction, we recognized a net gain of approximately $11.1 million . In March 2017, we repaid our maturing $300.0 million 2.50% Senior Notes using cash on hand. We currently anticipate using cash on hand to repay the outstanding principal balance of our $250.0 million 5.75% Senior Notes, maturing in March 2018 . Covenants The credit facility is guaranteed by NHUS and NHIL. The credit facility contains a covenant that limits our ratio of debt to total tangible capitalization, as defined in the credit facility, to 0.60 . At June 30, 2017 , our ratio of debt to total tangible capitalization was approximately 0.40 . We were in compliance with all covenants under the credit facility as of June 30, 2017 . In addition to the covenants from the credit facility noted above, the indentures governing our outstanding senior unsecured notes contain covenants that place restrictions on certain merger and consolidation transactions, unless we are the surviving entity or the other party assumes the obligations under the indenture, and on the ability to sell or transfer all or substantially all of our assets. In addition, there are restrictions on incurring or assuming certain liens and on entering into sale and lease-back transactions. At June 30, 2017 , we were in compliance with all of our debt covenants. We continually monitor compliance with the covenants under our notes and expect to remain in compliance during the remainder of 2017 . Fair Value of Debt Fair value represents the amount at which an instrument could be exchanged in a current transaction between willing parties. The estimated fair value of our senior notes was based on the quoted market prices for similar issues or on the current rates offered to us for debt of similar remaining maturities (Level 2 measurement). All remaining fair value disclosures are presented in Note 12— Fair Value of Financial Instruments . The following table presents the estimated fair value of our total debt, not including the effect of unamortized debt issuance costs, as of June 30, 2017 and December 31, 2016 , respectively: June 30, 2017 December 31, 2016 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Senior unsecured notes: 2.50% Senior Notes due March 2017 $ — $ — $ 299,992 $ 299,128 5.75% Senior Notes due March 2018 249,864 250,682 249,771 249,808 7.50% Senior Notes due March 2019 201,695 204,378 201,695 209,524 4.90% Senior Notes due August 2020 167,600 153,912 167,576 167,329 4.625% Senior Notes due March 2021 208,552 171,182 208,538 196,416 3.95% Senior Notes due March 2022 125,503 99,223 125,488 112,791 7.75% Senior Notes due January 2024 981,187 793,560 980,117 945,317 7.70% Senior Notes due April 2025 448,958 348,899 448,909 423,267 6.20% Senior Notes due August 2040 399,899 244,636 399,898 280,221 6.05% Senior Notes due March 2041 397,779 236,908 397,758 273,854 5.25% Senior Notes due March 2042 498,384 281,715 498,369 325,814 8.70% Senior Notes due April 2045 394,636 292,756 394,613 328,608 Total debt $ 4,074,057 $ 3,077,851 $ 4,372,724 $ 3,812,077

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 9— Income Taxes At June 30, 2017 , the reserves for uncertain tax positions totaled $190.3 million (net of related tax benefits of $1.0 million ). If the June 30, 2017 reserves are not realized, the provision for income taxes would be reduced by $184.1 million . At December 31, 2016 , the reserves for uncertain tax positions totaled $172.5 million (net of related tax benefits of $1.0 million ). It is reasonably possible that our existing liabilities related to our reserve for uncertain tax positions may fluctuate in the next 12 months primarily due to the completion of open audits or the expiration of statutes of limitation. However, we cannot reasonably estimate a range of changes in our existing liabilities due to various uncertainties, such as the unresolved nature of various audits. At June 30, 2017 , our income tax provision included a non-cash, discrete item of $260.7 million as the result of an internal tax restructuring, which was implemented to reduce costs associated with the ownership of multiple legal entities, simplify the overall legal entity structure, ease deployment of cash throughout the business and consolidate operations into one centralized group of entities. The effect of this tax restructuring will be to lower current tax expense. As of June 30, 2017 , we recorded deferred charges of $147.5 million related to the deferral of income tax expense on intercompany asset transfers as a result of our internal tax restructuring. The deferred charges are included in “Other assets” on the accompanying Condensed Consolidated Balance Sheet and are amortized as a component of income tax expense over the remaining life of the underlying assets.

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Note 10— Employee Benefit Plans Pension costs include the following components for the three months ended June 30, 2017 and 2016 : Three Months Ended June 30, 2017 2016 Non-U.S. U.S. Non-U.S. U.S. Service cost $ — $ — $ 799 $ 1,662 Interest cost 492 2,149 641 2,389 Return on plan assets (721 ) (2,941 ) (904 ) (3,097 ) Amortization of prior service cost — — 27 29 Recognized net actuarial loss 245 366 38 1,100 Net pension benefit cost (gain) $ 16 $ (426 ) $ 601 $ 2,083 Pension costs include the following components for the six months ended June 30, 2017 and 2016 : Six Months Ended June 30, 2017 2016 Non-U.S. U.S. Non-U.S. U.S. Service cost $ — $ — $ 1,574 $ 3,324 Interest cost 970 4,297 1,275 4,778 Return on plan assets (1,422 ) (5,882 ) (1,799 ) (6,194 ) Amortization of prior service cost — — 53 58 Recognized net actuarial loss 511 732 75 2,200 Net pension benefit cost (gain) $ 59 $ (853 ) $ 1,178 $ 4,166 During the second quarter of 2017, we made contributions to our pension plans totaling approximately $0.2 million . During the fourth quarter of 2016, we approved amendments, effective as of December 31, 2016 , to our non-U.S. and U.S. defined benefit plans. With these amendments, employees and alternate payees will accrue no future benefits under the plans after December 31, 2016. However, these amendments will not affect any benefits earned through that date.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Note 11— Derivative Instruments and Hedging Activities We periodically enter into derivative instruments to manage our exposure to fluctuations in interest rates and foreign currency exchange rates. We have documented policies and procedures to monitor and control the use of derivative instruments. We do not engage in derivative transactions for speculative or trading purposes, nor are we a party to leveraged derivatives. The FCX Settlement included two contingent payments, which are further discussed below. We accounted for these contingent payments as derivative instruments that did not qualify under the Financial Accounting Standards Board (“FASB”) standards for hedge accounting treatment, and therefore, changes in fair values were recognized as a loss in the accompanying Condensed Consolidated Statements of Operations. For foreign currency forward contracts, hedge effectiveness is evaluated at inception based on the matching of critical terms between derivative contracts and the hedged item. Any change in fair value resulting from ineffectiveness is recognized immediately in earnings. Cash Flow Hedges Several of our regional shorebases, including our North Sea operations, have a significant amount of their cash operating expenses payable in local currencies. To limit the potential risk of currency fluctuations, we periodically enter into forward contracts, which settle monthly in the operations’ respective local currencies. All of these contracts have a maturity of less than 12 months. The forward contract settlements in the remainder of 2017 represent approximately 70 percent of these forecasted local currency requirements. The notional amount of the forward contracts outstanding, expressed in U.S. Dollars, was approximately $20.6 million at June 30, 2017 . Total unrealized gains related to these forward contracts were approximately $0.7 million as of June 30, 2017 and were recorded as part of “Accumulated other comprehensive income (loss)” (“AOCL”). FCX Settlement As discussed in Note 5— Contract Settlement and Termination Agreement with Freeport-McMoRan Inc. , pursuant to the FCX Settlement, Noble could have received contingent payments from the FCX Settlement on September 30, 2017, depending on the average price of oil over a 12 - month period from June 30, 2016 through June 30, 2017. The average price of oil was calculated using the daily closing price of West Texas Intermediate crude oil (“WTI”) (CL1) on the New York Mercantile Exchange for the period of June 30, 2016 through June 30, 2017. If the price of WTI averaged more than $50 per barrel during such period, Freeport would have paid $25.0 million to Noble. In addition to the $25.0 million contingent payment, if the price of WTI averaged more than $65 per barrel during such period, Freeport would have paid an additional $50.0 million to Noble. These contingent payments did not qualify for hedge accounting treatment under FASB standards, and therefore, the change in fair value was recognized as a loss in the accompanying Condensed Consolidated Statements of Operations. These contingent payments are referred to as non-designated derivatives in the following tables. The price of WTI did not average more than $50 per barrel during the 12-month period. For the three and six months ended June 30, 2017 , we recognized losses of approximately $6.5 million and $14.4 million , respectively, in “Contract drilling services revenue,” related to the valuation of these contingent payments. As of June 30, 2017 , the fair value of these contingent payments was reduced to zero , as the period for earning the contingent payments had ended. Financial Statement Presentation The following table, together with Note 12— Fair Value of Financial Instruments , summarizes the financial statement presentation and fair value of our derivative positions as of June 30, 2017 and December 31, 2016 : Estimated fair value Balance sheet classification June 30, December 31, Asset derivatives Cash flow hedges Foreign currency forward contracts Prepaid expenses and other current assets $ 739 $ — Non-designated derivatives FCX Settlement Prepaid expenses and other current assets $ — $ 14,400 To supplement the fair value disclosures in Note 12— Fair Value of Financial Instruments , the following table summarizes the recognized gains and losses of cash flow hedges and non-designated derivatives through AOCL or as “contract drilling services” revenue or expense for the three months ended June 30, 2017 and 2016 : Unrealized gain/(loss) recognized through AOCL Gain/(loss) reclassified from AOCL to "contract drilling services" expense Gain/(loss) recognized through "contract drilling services" revenue 2017 2016 2017 2016 2017 2016 Cash flow hedges Foreign currency forward contracts $ 849 $ (2,054 ) $ 210 $ 290 $ — $ — Non-designated derivatives FCX Settlement $ — $ — $ — $ — $ (6,500 ) $ 17,600 To supplement the fair value disclosures in Note 12— Fair Value of Financial Instruments , the following table summarizes the recognized gains and losses of cash flow hedges and non-designated derivatives through AOCL or as “contract drilling services” revenue or expense for the six months ended June 30, 2017 and 2016 : Unrealized gain/(loss) recognized through AOCL Gain/(loss) reclassified from AOCL to "contract drilling services" expense Gain/(loss) recognized through "contract drilling services" revenue 2017 2016 2017 2016 2017 2016 Cash flow hedges Foreign currency forward contracts $ 739 $ (1,068 ) $ — $ — $ 137 $ 382 Non-designated derivatives FCX Settlement $ — $ — $ — $ — $ (14,400 ) $ 17,600

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 12— Fair Value of Financial Instruments The FASB guidance establishes a fair value hierarchy that distinguishes between assumptions based on market data from independent sources (“observable inputs”) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (“unobservable inputs”). The fair value hierarchy under FASB guidance prioritizes inputs within three levels: Level 1: Valuations based on quoted prices in active markets for identical assets; Level 2: Valuations based on observable inputs that do not meet the criteria for Level 1, including quoted prices in inactive markets and quoted prices in active markets for similar but not identical instruments; and Level 3: Valuations based on unobservable inputs. The following tables present the carrying amount and estimated fair value of our financial instruments recognized at fair value on a recurring basis: June 30, 2017 Estimated Fair Value Measurements Carrying Amount Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs(Level 2) Significant Unobservable Inputs (Level 3) Assets - Marketable securities $ 7,077 $ 7,077 $ — $ — Foreign currency forward contracts $ 739 $ — $ 739 $ — December 31, 2016 Estimated Fair Value Measurements Carrying Amount Quoted Prices in Active Markets(Level 1) Significant Other Observable Inputs(Level 2) Significant Unobservable Inputs (Level 3) Assets - Marketable securities $ 6,246 $ 6,246 $ — $ — FCX Settlement $ 14,400 $ — $ — $ 14,400 Our cash and cash equivalents, accounts receivable, marketable securities and accounts payable are by their nature short-term. As a result, the carrying values included in the accompanying Condensed Consolidated Balance Sheets approximate fair value. The foreign currency forward contracts have been valued using actively quoted prices and quotes obtained from the counterparties to the contracts. The following table details the activity related to the FCX Settlement asset classified within Level 3 of the valuation hierarchy for the periods indicated: Balance as of December 31, 2016 $ 14,400 Fair value recognized in earnings (7,900 ) Balance as of March 31, 2017 $ 6,500 Fair value recognized in earnings (6,500 ) Balance as of June 30, 2017 $ —

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Note 13— Accumulated Other Comprehensive Income (Loss) The following table presents the changes in the accumulated balances for each component of AOCL for the six months ended June 30, 2017 and 2016 . All amounts within the tables are shown net of tax. Unrealized Gains /(Losses) on Cash Flow Hedges (1) Defined Benefit Pension Items (2) Foreign Currency Items Total Balance at December 31, 2015 $ — $ (46,919 ) $ (16,256 ) $ (63,175 ) Activity during period: Other comprehensive income (loss) before reclassifications (1,068 ) — 806 (262 ) Amounts reclassified from AOCL — 1,567 — 1,567 Net other comprehensive income (loss) (1,068 ) 1,567 806 1,305 Balance at June 30, 2016 $ (1,068 ) $ (45,352 ) $ (15,450 ) $ (61,870 ) Balance at December 31, 2016 $ — $ (35,865 ) $ (16,275 ) $ (52,140 ) Activity during period: Other comprehensive income (loss) before reclassifications 739 — 280 1,019 Amounts reclassified from AOCL — 767 — 767 Net other comprehensive income (loss) 739 767 280 1,786 Balance at June 30, 2017 $ 739 $ (35,098 ) $ (15,995 ) $ (50,354 ) (1) Gains/(losses) on cash flow hedges are related to foreign currency forward contracts. Reclassifications from AOCL are recognized through “contract drilling services” expense on our Condensed Consolidated Statements of Operations. See Note 11— Derivative Instruments and Hedging Activities for additional information. (2) Defined benefit pension items relate to actuarial changes and the amortization of prior service costs. Reclassifications from AOCL are recognized as expense on our Condensed Consolidated Statements of Operations through either “Contract drilling services” or “General and administrative.” See Note 10— Employee Benefit Plans for additional information.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 14— Commitments and Contingencies In January 2017, a subsidiary of Transocean Ltd. ("Transocean") filed suit against us and certain of our subsidiaries for patent infringement in a Texas federal court. The suit claims that five of our newbuild rigs that operated in the U.S. Gulf of Mexico violated Transocean patents relating to what is generally referred to as dual-activity drilling. We were aware of the patents when we constructed the rigs, and we do not believe that our rigs infringe the Transocean patents, which are now expired. We intend to defend ourselves vigorously against this claim. In December 2014, one of our subsidiaries reached a settlement with the U.S. Department of Justice (“DOJ”) regarding our former drillship, the Noble Discoverer, and the Kulluk, a rig we were providing contract labor services for, in respect of violations of applicable law discovered in connection with a 2012 Coast Guard inspection in Alaska and our own subsequent internal investigation. Under the terms of the agreement, the subsidiary pled guilty to oil record book, ballast record and required hazardous condition reporting violations with respect to the Noble Discoverer and an oil record book violation with respect to the Kulluk . The subsidiary paid $8.2 million in fines and $4.0 million in community service payments and was placed on probation for four years , provided that we may petition the court for early dismissal of probation after three years . If, during the term of probation, the subsidiary fails to adhere to the terms of the plea agreement, the DOJ may withdraw from the plea agreement and would be free to prosecute the subsidiary on all charges arising out of its investigation, including any charges dismissed pursuant to the terms of the plea agreement, as well as potentially other charges. We also implemented a comprehensive environmental compliance plan in connection with the settlement. We have used a commercial agent in Brazil in connection with our Petróleo Brasileiro S.A. (“Petrobras”) drilling contracts. We understand that this agent has represented a number of different companies in Brazil over many years, including several offshore drilling contractors. In November 2015, this agent pled guilty in Brazil in connection with the award of a drilling contract to a competitor and implicated a Petrobras official as part of a wider investigation of Petrobras’ business practices. Following news reports relating to the agent’s involvement in the Brazil investigation in connection with his activities with other companies, we conducted a review, which is now substantially complete, of our relationship with the agent and with Petrobras. We are in contact with the SEC, the Brazilian federal prosecutor’s office and the DOJ about this matter. We are cooperating with these agencies and they are aware of our internal review. To our knowledge, neither the agent, nor the government authorities investigating the matter, has alleged that the agent or Noble acted improperly in connection with our contracts with Petrobras. In previous periods, we reported the existence of a number of asbestos related lawsuits in which we were one of many defendants. As a result of the termination of the Separation Agreements, we no longer have any indemnity obligations in respect of these lawsuits, and responsibility for the claims has reverted back to Paragon Offshore, the entity that was originally named as a party in the lawsuits. We are a defendant in certain claims and litigation arising out of operations in the ordinary course of business, including personal injury claims, the resolution of which, in the opinion of management, will not be material to our financial position, results of operations or cash flows. There is inherent risk in any litigation or dispute and no assurance can be given as to the outcome of these claims. We operate in a number of countries throughout the world and our tax returns filed in those jurisdictions are subject to review and examination by tax authorities within those jurisdictions. We recognize uncertain tax positions that we believe have a greater than 50 percent likelihood of being sustained. We cannot predict or provide assurance as to the ultimate outcome of any existing or future assessments. During 2014, the IRS began its examination of our tax reporting in the U.S. for the taxable years ended December 31, 2010 and 2011. The IRS examination team has completed its examination of our 2010 and 2011 U.S. tax returns and proposed adjustments and deficiencies with respect to certain items that were reported by us for the 2010 and 2011 tax year. On December 19, 2016, we received the Revenue Agent Report ("RAR") from the IRS. We believe that we have accurately reported all amounts in our tax returns, and have submitted administrative protests with the IRS Office of Appeals contesting the examination team’s proposed adjustments. We intend to vigorously defend our reported positions, and believe the ultimate resolution of the adjustments proposed by the IRS examination team will not have a material adverse effect on our condensed consolidated financial statements. We have also been informed by the IRS that our 2012 and 2013 tax returns will be examined, and we anticipate that examination will begin during 2017. The IRS examination team also completed its examination of two U.S. subsidiaries of Frontier Drilling for 2011, and proposed no changes to those returns. On August 1, 2014, Noble-UK completed the Spin-off through a pro rata distribution of all of the ordinary shares of its wholly-owned subsidiary, Paragon Offshore, to the holders of Noble’s ordinary shares. In February 2016, Paragon Offshore sought approval of the Prior Plan by filing for voluntary relief under Chapter 11 of the United States Bankruptcy Code. As part of the Prior Plan, we entered into the Settlement Agreement with Paragon Offshore under which, in exchange for a full and unconditional release of any claims by Paragon Offshore in connection with the Spin-off (including fraudulent conveyance claims that could be brought on behalf of Paragon Offshore’s creditors), we agreed to provide certain tax bonding in Mexico as well as assume certain tax liabilities and the administration of Mexican tax claims for specified years. The bonding to be provided by Noble-UK was a key benefit to Paragon Offshore of the Settlement Agreement, which was subject to bankruptcy court confirmation as part of a bankruptcy plan. The Prior Plan was rejected by the bankruptcy court in October 2016. In April 2017, Paragon Offshore filed an updated disclosure statement and the revised New Plan in its bankruptcy proceeding. Under the New Plan, including Paragon Offshore ’s revised business plan, Paragon Offshore no longer needed the Mexican tax bonding that Noble-UK was to provide under the Settlement Agreement . As a result, the Settlement Agreement was no longer applicable to the ongoing business of Paragon Offshore. Consequently, Paragon Offshore abandoned the Settlement Agreement as part of the New Plan, and the Settlement Agreement was terminated at the time of the filing of the New Plan. On May 2, 2017, Paragon Offshore announced that it had reached an agreement in principle with both its secured and unsecured creditors to revise the New Plan to, among other things, create and fund a $10.0 million litigation trust to pursue litigation against us. On June 7, 2017, the revised New Plan was approved by the bankruptcy court and Paragon Offshore emerged from bankruptcy on July 18, 2017 . We expect Paragon Offshore or its creditors will use the litigation trust to pursue claims against us relating to the Spin-off, including alleged fraudulent conveyance claims. We continue to believe that Paragon Offshore, at the time of the Spin-off, was properly funded, solvent and had appropriate liquidity and that any fraudulent conveyance claim or other claim related to the Spin-off that may be brought by Paragon Offshore or its creditors, would be without merit and would be contested vigorously by us. If litigation is instituted against Noble and we are unsuccessful in defending such claims, it could have a material adverse effect on our financial position, results of operations and/or cash flows. Prior to the completion of the Spin-off, Noble-UK and Paragon Offshore entered into the Separation Agreements to effect the separation and Spin-off and govern the relationship between the parties after the Spin-off, including the MSA and TSA. As part of its final bankruptcy plan, Paragon Offshore rejected the Separation Agreements. Accordingly, the indemnity obligations that Paragon Offshore potentially would have owed us under the Separation Agreements have now terminated, including indemnities arising under the MSA and the TSA in respect of obligations related to Paragon Offshore’s business that were incurred through Noble-retained entities prior to the Spin-off. Likewise, any potential indemnity obligations that we would have owed Paragon Offshore under the Separation Agreements, including those under the MSA and the TSA in respect of Noble-UK’s business that was conducted prior to the Spin-off through Paragon Offshore-retained entities, are now also extinguished. In the absence of the Separation Agreements, liabilities relating to the respective parties will be borne by the owner of the legal entity or asset at issue and neither party will look to an allocation based on the historic relationship of an entity or asset to one of the party’s business, as had been the case under the Separation Agreements. The rejection and ultimate termination of the indemnity and related obligations under the Separation Agreements has resulted in a number of accounting charges and benefits in this period and such termination may continue to affect us in the future as liabilities arise for which we would have been indemnified by Paragon Offshore or would have had to indemnify Paragon Offshore. We do not expect that, overall, the rejection of the Separation Agreements by Paragon Offshore will have a material adverse effect on our financial condition or liquidity. However, any loss we experience with respect to which we would have been able to secure indemnification from Paragon Offshore under one or more of the Separation Agreements could have an adverse impact on our results of operations in any period, which impact may be material depending on our results of operations during this down-cycle. For the three and six months ended June 30, 2017 , we recognized net charges of $15.9 million , with a non-cash loss of $1.5 million recorded in "Net loss from discontinued operations, net of tax" on our Condensed Consolidated Statement of Operations relating to the emergence from bankruptcy of Paragon Offshore. In January 2015, Noble received an official notification of a ruling from the Second Chamber of the Supreme Court in Mexico. The ruling settled an ongoing dispute in Mexico relating to the classification of a Noble subsidiary’s business activity and the applicable rate of depreciation under the Mexican law applicable to the activities of that subsidiary. The ruling did not result in any additional tax liability to Noble. Additionally, the ruling is only applicable to the Noble subsidiary named in the ruling and, therefore, does not establish the depreciation rate applicable to the assets of other Noble subsidiaries. We will continue to contest future assessments received, and can make no assurances regarding the ultimate outcome of these tax claims or our obligations to pay additional taxes in respect of these tax claims. In previous periods, we reported that Mexican and Brazilian authorities had made significant tax assessments against Paragon Offshore entities, of which approximately $45.5 million and $46.5 million , respectively, related to Noble’s business that operated through Paragon Offshore-retained entities in Mexico and Brazil prior to the spin-off. As a result of the termination of the Separation Agreements, we no longer have any indemnity obligations in respect of these tax claims made against Paragon Offshore entities, and responsibility for these claims has reverted back to the applicable Paragon Offshore entity. Audit claims of approximately $51.3 million attributable to income and other business taxes have been assessed against Noble entities in Mexico. In previous periods, we also reported that Petrobras had notified us that it was challenging assessments by Brazilian tax authorities of withholding taxes associated with the provision of drilling rigs for its operations in Brazil during 2008 and 2009. Petrobras had also notified us that if Petrobras was ultimately forced to pay such withholding taxes, it would seek reimbursement from Paragon Offshore who would then seek reimbursement from us for the portion of the $23.9 million in withholding that was allocable to our drilling rigs. As a result of the termination of the Separation Agreements, we no longer have any indemnity obligation in respect of these withholding claims made against a Paragon Offshore entity, and responsibility for these claims has reverted back to the applicable Paragon Offshore entity. We maintain certain insurance coverage against specified marine perils, which includes physical damage and loss of hire to our drilling rigs along with other associated coverage common in our industry. We maintain a physical damage deductible on our rigs of $25.0 million per occurrence. With respect to the U.S. Gulf of Mexico, hurricane risk has generally resulted in more restrictive and expensive coverage for U.S. named windstorm perils, and we have opted in certain years to maintain limited or no windstorm coverage. Our current program provides for $500.0 million in named windstorm coverage in the U.S. Gulf of Mexico. The loss of hire coverage applies only to our rigs operating under contract with a dayrate equal to or greater than $200,000 a day and is subject to a 45 -day waiting period for each unit and each occurrence. Although we maintain insurance in the geographic areas in which we operate, pollution, reservoir damage and environmental risks generally are not fully insurable. Our insurance policies and contractual rights to indemnity may not adequately cover our losses or may have exclusions of coverage for some losses. We do not have insurance coverage or rights to indemnity for all risks, including loss of hire insurance on most of the rigs in our fleet. Uninsured exposures may include expatriate activities prohibited by U.S. laws and regulations, radiation hazards, certain loss or damage to property on board our rigs and losses relating to shore-based terrorist acts, strikes or cyber risks. If a significant accident or other event occurs and is not fully covered by insurance or contractual indemnity, it could materially adversely affect our financial position, results of operations or cash flows. Additionally, there can be no assurance that those parties with contractual obligations to indemnify us will necessarily be financially able to indemnify us against all these risks. We carry protection and indemnity insurance covering marine third party liability exposures, which also includes coverage for employer’s liability resulting from personal injury to our offshore drilling crews. Our protection and indemnity policy currently has a standard deductible of $10.0 million per occurrence, with maximum liability coverage of $750.0 million . We have entered into agreements with certain of our executive officers, as well as certain other employees. These agreements become effective upon a change of control of Noble-UK (within the meaning set forth in the agreements) or a termination of employment in connection with or in anticipation of a change of control, and remain effective for three years thereafter. These agreements provide for compensation and certain other benefits under such circumstances.

Accounting Pronouncements

Accounting Pronouncements	6 Months Ended
	Jun. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Pronouncements	Note 15— Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-9, which creates Accounting Standards Codification (“ASC”) Topic 606, “Revenue from Contracts with Customers,” and supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition,” including most industry-specific revenue recognition guidance throughout the Industry Topics of the Codification. In addition, ASU No. 2014-9 supersedes the cost guidance in Subtopic 605-35, “Revenue Recognition—Construction-Type and Production-Type Contracts,” and creates new Subtopic 340-40, “Other Assets and Deferred Costs—Contracts with Customers.” In summary, the core principle of Topic 606 is to recognize revenue when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. The amendments in ASU No. 2014-9 are effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period, and early application is permitted for periods beginning after December 15, 2016. We have formed an implementation work team, completed training on ASC Topic 606 and have begun a project to review relevant contracts. We plan on adopting the new standard effective January 1, 2018 concurrently with ASU No. 2016-2, Leases (ASC Topic 842) as discussed below and applying it retrospectively to all comparative periods presented. Upon adoption of these two new standards, we expect to have a lease component and a service component of revenue related to our drilling contracts. In February 2016, the FASB issued ASU No. 2016-2, which creates ASC Topic 842, “Leases.” This update increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018. Under the updated accounting standards, we have preliminarily determined that our drilling contracts contain a lease component, and our adoption, therefore, will require that we separately recognize revenues associated with the lease and services components. Our adoption, and the ultimate effect on our condensed consolidated financial statements, will be based on an evaluation of the contract-specific facts and circumstances. Due to the interaction with the issued accounting standard on revenue recognition, we expect to adopt ASC 842 effective January 1, 2018, concurrently with ASC 606. We expect to apply the modified retrospective approach to our adoption. Our adoption will have an impact on how our condensed consolidated financial statements and related disclosures will be presented. We are currently evaluating the impact ASC 842 will have on our condensed consolidated financial statements, and to complete that evaluation we have completed training on the ASU, formed an implementation team and started the review and documentation of contracts. In March 2016, the FASB issued ASU No. 2016-9, which amends ASC Topic 718, “Compensation – Stock Compensation.” This amendment simplifies several aspects of the 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 guidance is effective for interim and annual reporting periods beginning after December 15, 2016. Under the new provision, current period excess tax benefits related to stock compensation are now recognized in our Condensed Consolidated Statement of Operations in “Provision for income taxes,” rather than on our Condensed Consolidated Balance Sheet and Condensed Consolidated Statement of Cash Flows. This update has been applied on a prospective basis. Changes to our Condensed Consolidated Statement of Cash Flows related to the reclassification of prior period excess tax benefits and employee taxes paid for share-based payment arrangements have been implemented on a retrospective basis. In accordance with our adoption of this update, prior period excess tax benefits of approximately $5.5 million , previously classified as a financing activity in “Employee stock transactions” on the June 30, 2016 Condensed Consolidated Statement of Cash Flows, are now classified as an operating activity in “Net change in other assets and liabilities” on the accompanying Condensed Consolidated Statement of Cash Flows for the comparative period. Additionally, prior period employee taxes paid for share-based payment arrangements of approximately $3.2 million , previously classified as an operating activity in “Net change in other assets and liabilities” on the June 30, 2016 Condensed Consolidated Statement of Cash Flows, are now classified as a financing activity in “Employee stock transactions” on the accompanying Condensed Consolidated Statement of Cash Flows for the comparative period. In October 2016, the FASB issued ASU No. 2016-16 which amends ASC Topic 740, “Income Taxes.” The amendments in this update improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017. We are evaluating what impact, if any, the adoption of this guidance will have on our financial condition, results of operations, cash flows or financial disclosures. With the exception of the updated standards discussed above, there have been no new accounting pronouncements not yet effective that have significance, or potential significance, to our condensed consolidated financial statements.

Supplemental Financial Informat

Supplemental Financial Information	6 Months Ended
	Jun. 30, 2017
Supplemental Financial Information [Abstract]
Supplemental Financial Information	Note 16— Supplemental Financial Information Condensed Consolidated Balance Sheets Information Deferred revenues from drilling contracts totaled $122.8 million and $134.4 million at June 30, 2017 and December 31, 2016 , respectively. Such amounts are included in either “Other current liabilities” or “Other liabilities” in the accompanying Condensed Consolidated Balance Sheets, based upon our expected time of recognition. Related expenses deferred under drilling contracts totaled $47.3 million at June 30, 2017 as compared to $53.8 million at December 31, 2016 , and are included in either “Prepaid expenses and other current assets” or “Other assets” in the accompanying Condensed Consolidated Balance Sheets, based upon our expected time of recognition. In April 2015, we agreed to contract dayrate reductions for five rigs working for Saudi Arabian Oil Company (“Saudi Aramco”), which were effective from January 1, 2015 through December 31, 2015. During the first quarter of 2016, we agreed to further contract dayrate reductions for the remaining four contracted rigs through the end of 2016. Given current market conditions and based on discussions with the customer, we do not expect the rates to return to the original contract rates. In accordance with accounting guidance, we are recognizing the reductions on a straight-line basis over the remaining life of the existing Saudi Aramco contracts. At June 30, 2017 and December 31, 2016 , revenues recorded in excess of billings as a result of this recognition totaled $15.1 million and $17.9 million , respectively, and are included in either “Prepaid expenses and other current assets” or “Other assets” in the accompanying Condensed Consolidated Balance Sheets, based upon our expected time of recognition. Condensed Consolidated Statements of Cash Flows Information The net effect of changes in other assets and liabilities on cash flows from operating activities is as follows: Noble-UK Noble-Cayman Six Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Accounts receivable $ 76,495 $ 147,454 $ 76,495 $ 147,454 Other current assets 15,896 75,949 12,475 73,543 Other assets (40,078 ) 104,416 (47,166 ) 102,335 Accounts payable (8,881 ) (50,663 ) (8,754 ) (48,719 ) Other current liabilities (19,385 ) (74,247 ) (18,293 ) (67,843 ) Other liabilities 6,703 (38,590 ) 13,547 (39,933 ) $ 30,750 $ 164,319 $ 28,304 $ 166,837 In accordance with our adoption of ASU No. 2016-9, prior period excess tax benefits, which were previously classified as a financing activity in “Employee stock transactions,” are now classified as an operating activity in “Net change in other assets and liabilities” on our Condensed Consolidated Statement of Cash Flows and current period excess tax benefits are now recognized in our Condensed Consolidated Statement of Operations through income taxes. Additionally, shares withheld for taxes on employee stock transactions, which were previously classified as an operating activity in “Net change in other assets and liabilities,” are now classified as a financing activity in “Employee stock transactions” on our Condensed Consolidated Statement of Cash Flows.

Condensed Consolidating Financi

Condensed Consolidating Financial Information	6 Months Ended
	Jun. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Financial Information	Note 17— Condensed Consolidating Financial Information Guarantees of Registered Securities Noble-Cayman, or one or more 100 percent owned subsidiaries of Noble-Cayman, is a co-issuer or full and unconditional guarantor or otherwise obligated as of June 30, 2017 as follows: Issuer Notes (Co-Issuer(s)) Guarantor $250 million 5.75% Senior Notes due 2018 NHIL Noble-Cayman $202 million 7.50% Senior Notes due 2019 NHUS Noble-Cayman Noble Drilling Holding, LLC ("NDH") Noble Drilling Services 6 LLC ("NDS6") $168 million 4.90% Senior Notes due 2020 NHIL Noble-Cayman $209 million 4.625% Senior Notes due 2021 NHIL Noble-Cayman $126 million 3.95% Senior Notes due 2022 NHIL Noble-Cayman $1 billion 7.75% Senior Notes due 2024 NHIL Noble-Cayman $450 million 7.70% Senior Notes due 2025 NHIL Noble-Cayman $400 million 6.20% Senior Notes due 2040 NHIL Noble-Cayman $400 million 6.05% Senior Notes due 2041 NHIL Noble-Cayman $500 million 5.25% Senior Notes due 2042 NHIL Noble-Cayman $400 million 8.70% Senior Notes due 2045 NHIL Noble-Cayman The following condensed consolidating financial statements of Noble-Cayman, NHUS, NDH, NHIL, NDS6 and all other subsidiaries present investments in both consolidated and unconsolidated affiliates using the equity method of accounting. NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET June 30, 2017 (in thousands) (Unaudited) Noble - NHUS NDH NHIL NDS6 Other Consolidating Total ASSETS Current assets Cash and cash equivalents $ 14 $ — $ 119 $ 367 $ — $ 601,678 $ — $ 602,178 Accounts receivable — — 31,008 — — 211,649 — 242,657 Taxes receivable — — — — — 18,169 — 18,169 Short-term notes receivable from affiliates — — 119,476 — 2,373,452 — (2,492,928 ) — Accounts receivable from affiliates 619,661 92,349 149,005 60,944 357,957 5,824,879 (7,104,795 ) — Prepaid expenses and other current assets 96 — 1,040 49 1 73,014 — 74,200 Total current assets 619,771 92,349 300,648 61,360 2,731,410 6,729,389 (9,597,723 ) 937,204 Property and equipment, at cost — — 1,070,746 — — 11,340,111 — 12,410,857 Accumulated depreciation — — (246,631 ) — — (2,325,931 ) — (2,572,562 ) Property and equipment, net — — 824,115 — — 9,014,180 — 9,838,295 Notes receivable from affiliates 3,177,248 — 1,053,783 — 3,943,299 1,171,304 (9,345,634 ) — Investments in affiliates 5,029,983 3,179,576 4,698,262 12,517,083 7,275,866 — (32,700,770 ) — Other assets 3,462 16,775 6,419 — — 222,138 — 248,794 Total assets $ 8,830,464 $ 3,288,700 $ 6,883,227 $ 12,578,443 $ 13,950,575 $ 17,137,011 $ (51,644,127 ) $ 11,024,293 LIABILITIES AND EQUITY Current liabilities Short-term notes payables to affiliates $ — $ 1,605,243 $ — $ — $ — $ 887,685 $ (2,492,928 ) $ — Current maturities of long-term debt — — — 249,475 — — — 249,475 Accounts payable — — 2,856 — — 83,558 — 86,414 Accrued payroll and related costs — — 4,848 — — 33,492 — 38,340 Accounts payable to affiliates 3,434,157 456,573 1,857,871 404,332 — 951,862 (7,104,795 ) — Taxes payable — 41,361 — — — 47,951 — 89,312 Interest payable 24 — — 95,184 4,454 — — 99,662 Other current liabilities 16 — 945 — — 83,517 — 84,478 Total current liabilities 3,434,197 2,103,177 1,866,520 748,991 4,454 2,088,065 (9,597,723 ) 647,681 Long-term debt — — — 3,592,411 201,483 — — 3,793,894 Notes payable to affiliates — 700,000 470,643 3,175,662 — 4,999,329 (9,345,634 ) — Deferred income taxes — — — — — 212,526 — 212,526 Other liabilities 19,929 — 11,010 — — 266,867 — 297,806 Total liabilities 3,454,126 2,803,177 2,348,173 7,517,064 205,937 7,566,787 (18,943,357 ) 4,951,907 Commitments and contingencies Total shareholder equity 5,376,338 485,523 4,535,054 5,061,379 13,744,638 8,471,145 (32,297,739 ) 5,376,338 Noncontrolling interests — — — — — 1,099,079 (403,031 ) 696,048 Total equity 5,376,338 485,523 4,535,054 5,061,379 13,744,638 9,570,224 (32,700,770 ) 6,072,386 Total liabilities and equity $ 8,830,464 $ 3,288,700 $ 6,883,227 $ 12,578,443 $ 13,950,575 $ 17,137,011 $ (51,644,127 ) $ 11,024,293 NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET December 31, 2016 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total ASSETS Current assets Cash and cash equivalents $ 2,537 $ — $ 10,855 $ — $ — $ 640,441 $ — $ 653,833 Accounts receivable — — 33,162 — — 285,990 — 319,152 Taxes receivable — 21,428 — — — 34,052 — 55,480 Short-term notes receivable from affiliates — — 243,915 — 1,349,708 52,611 (1,646,234 ) — Accounts receivable from affiliates 361,313 — 137,476 67,560 85,274 3,038,658 (3,690,281 ) — Prepaid expenses and other current assets 270 — 1,611 — — 86,868 — 88,749 Total current assets 364,120 21,428 427,019 67,560 1,434,982 4,138,620 (5,336,515 ) 1,117,214 Property and equipment, at cost — — 2,376,862 — — 9,988,026 — 12,364,888 Accumulated depreciation — — (428,308 ) — — (1,874,632 ) — (2,302,940 ) Property and equipment, net — — 1,948,554 — — 8,113,394 — 10,061,948 Notes receivable from affiliates 3,304,672 — 112,706 69,564 5,000 1,798,614 (5,290,556 ) — Investments in affiliates 2,848,855 2,007,016 1,411,874 8,369,728 6,129,082 — (20,766,555 ) — Other assets 4,292 — 5,687 — — 168,573 — 178,552 Total assets $ 6,521,939 $ 2,028,444 $ 3,905,840 $ 8,506,852 $ 7,569,064 $ 14,219,201 $ (31,393,626 ) $ 11,357,714 LIABILITIES AND EQUITY Current liabilities Short-term notes payables to affiliates $ — $ 171,925 $ — $ — $ — $ 1,474,309 $ (1,646,234 ) $ — Current maturities of long-term debt — — — 299,882 — — — 299,882 Accounts payable — — 4,228 — — 103,640 — 107,868 Accrued payroll and related costs — — 4,882 — — 43,437 — 48,319 Accounts payable to affiliates 818,737 111,801 1,995,788 123,642 — 640,313 (3,690,281 ) — Taxes payable — — — — — 46,561 — 46,561 Interest payable 48 — — 56,839 4,412 — — 61,299 Other current liabilities 12 — 4,296 — — 63,004 — 67,312 Total current liabilities 818,797 283,726 2,009,194 480,363 4,412 2,371,264 (5,336,515 ) 631,241 Long-term debt — — — 3,838,807 201,422 — — 4,040,229 Notes payable to affiliates — 700,000 467,139 744,181 — 3,379,236 (5,290,556 ) — Deferred income taxes — — 534 — — 1,550 — 2,084 Other liabilities 19,929 — 24,035 — — 248,219 — 292,183 Total liabilities 838,726 983,726 2,500,902 5,063,351 205,834 6,000,269 (10,627,071 ) 4,965,737 Commitments and contingencies Total shareholder equity 5,683,213 1,044,718 1,404,938 3,443,501 7,363,230 7,106,323 (20,362,710 ) 5,683,213 Noncontrolling interests — — — — — 1,112,609 (403,845 ) 708,764 Total equity 5,683,213 1,044,718 1,404,938 3,443,501 7,363,230 8,218,932 (20,766,555 ) 6,391,977 Total liabilities and equity $ 6,521,939 $ 2,028,444 $ 3,905,840 $ 8,506,852 $ 7,569,064 $ 14,219,201 $ (31,393,626 ) $ 11,357,714 NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS and COMPREHENSIVE INCOME (LOSS) Three Months Ended June 30, 2017 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Operating revenues Contract drilling services $ — $ — $ 39,988 $ — $ — $ 241,488 $ (9,944 ) $ 271,532 Reimbursables — — 892 — — 5,707 — 6,599 Other — — — — — 11 — 11 Total operating revenues — — 40,880 — — 247,206 (9,944 ) 278,142 Operating costs and expenses Contract drilling services (866 ) 3,362 12,687 (10,834 ) — 167,452 (9,944 ) 161,857 Reimbursables — — 472 — — 3,922 — 4,394 Depreciation and amortization — — 14,005 — — 120,628 — 134,633 General and administrative (442 ) 1,538 — (5,941 ) 5 18,071 — 13,231 Total operating costs and expenses (1,308 ) 4,900 27,164 (16,775 ) 5 310,073 (9,944 ) 314,115 Operating income (loss) 1,308 (4,900 ) 13,716 16,775 (5 ) (62,867 ) — (35,973 ) Other income (expense) Income (loss) of unconsolidated affiliates (85,274 ) (99,354 ) 39,114 48,476 5,647 — 91,391 — Income (loss) of unconsolidated affiliates - discontinued operations, net of tax 2,967 4,566 — — — — (7,533 ) — Interest income (expense), net of amounts capitalized (2,578 ) (6,345 ) (3,291 ) (107,686 ) (3,854 ) (23,134 ) 73,679 (73,209 ) Interest income and other, net 2,646 (26 ) 14,309 720 53,560 5,198 (73,679 ) 2,728 Income (loss) from continuing operations before income taxes (80,931 ) (106,059 ) 63,848 (41,715 ) 55,348 (80,803 ) 83,858 (106,454 ) Income tax benefit (provision) — 66,127 (835 ) — — (47,079 ) — 18,213 Net income (loss) from continuing operations (80,931 ) (39,932 ) 63,013 (41,715 ) 55,348 (127,882 ) 83,858 (88,241 ) Net income (loss) from discontinuing operations, net of tax — (1,598 ) — — — 4,565 — 2,967 Net Income (loss) (80,931 ) (41,530 ) 63,013 (41,715 ) 55,348 (123,317 ) 83,858 (85,274 ) Net (income) loss attributable to noncontrolling interests — — — — — 4,821 (478 ) 4,343 Net income (loss) attributable to Noble Corporation (80,931 ) (41,530 ) 63,013 (41,715 ) 55,348 (118,496 ) 83,380 (80,931 ) Other comprehensive income (loss), net 1,318 — — — — 1,318 (1,318 ) 1,318 Comprehensive income (loss) attributable to Noble Corporation $ (79,613 ) $ (41,530 ) $ 63,013 $ (41,715 ) $ 55,348 $ (117,178 ) $ 82,062 $ (79,613 ) NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS and COMPREHENSIVE INCOME (LOSS) Six Months Ended June 30, 2017 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Operating revenues Contract drilling services $ — $ — $ 87,092 $ — $ — $ 566,212 $ (27,113 ) $ 626,191 Reimbursables — — 2,028 — — 12,875 — 14,903 Other — — — — — 24 — 24 Total operating revenues — — 89,120 — — 579,111 (27,113 ) 641,118 Operating costs and expenses Contract drilling services 135 5,933 24,186 1,653 — 317,079 (27,113 ) 321,873 Reimbursables — — 1,292 — — 8,248 — 9,540 Depreciation and amortization — — 30,520 — — 239,831 — 270,351 General and administrative 71 2,845 — 892 9 18,478 — 22,295 Total operating costs and expenses 206 8,778 55,998 2,545 9 583,636 (27,113 ) 624,059 Operating income (loss) (206 ) (8,778 ) 33,122 (2,545 ) (9 ) (4,525 ) — 17,059 Other income (expense) Income (loss) of unconsolidated affiliates (380,376 ) (412,919 ) 41,483 145,293 56,266 — 550,253 — Income (loss) of unconsolidated affiliates - discontinued operations, net of tax 2,967 4,566 — — — — (7,533 ) — Interest income (expense), net of amounts capitalized (5,183 ) (23,856 ) (6,383 ) (213,688 ) (7,671 ) (80,447 ) 190,572 (146,656 ) Interest income and other, net 7,278 (91 ) 54,211 4,923 116,978 11,120 (190,572 ) 3,847 Income (loss) from continuing operations before income taxes (375,520 ) (441,078 ) 122,433 (66,017 ) 165,564 (73,852 ) 542,720 (125,750 ) Income tax benefit (provision) — 116,586 (326 ) — — (355,420 ) — (239,160 ) Net income (loss) from continuing operations (375,520 ) (324,492 ) 122,107 (66,017 ) 165,564 (429,272 ) 542,720 (364,910 ) Net income (loss) from discontinuing operations, net of tax — (1,598 ) — — — 4,565 — 2,967 Net Income (loss) (375,520 ) (326,090 ) 122,107 (66,017 ) 165,564 (424,707 ) 542,720 (361,943 ) Net income attributable to noncontrolling interests — — — — — (12,761 ) (816 ) (13,577 ) Net income (loss) attributable to Noble Corporation (375,520 ) (326,090 ) 122,107 (66,017 ) 165,564 (437,468 ) 541,904 (375,520 ) Other comprehensive income (loss), net 1,786 — — — — 1,786 (1,786 ) 1,786 Comprehensive income (loss) attributable to Noble Corporation $ (373,734 ) $ (326,090 ) $ 122,107 $ (66,017 ) $ 165,564 $ (435,682 ) $ 540,118 $ (373,734 ) NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF INCOME and COMPREHENSIVE INCOME (LOSS) Three Months Ended June 30, 2016 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Operating revenues Contract drilling services $ — $ — $ 64,839 $ — $ — $ 838,984 $ (27,126 ) $ 876,697 Reimbursables — — 2,622 — — 15,311 — 17,933 Other — — — — — 253 — 253 Total operating revenues — — 67,461 — — 854,548 (27,126 ) 894,883 Operating costs and expenses Contract drilling services 972 4,318 11,960 19,290 — 232,820 (27,126 ) 242,234 Reimbursables — — 2,345 — — 11,953 — 14,298 Depreciation and amortization — — 22,309 — — 128,629 — 150,938 General and administrative 306 2,340 — 10,920 1 286 — 13,853 Loss on impairment — — — — — 16,616 — 16,616 Total operating costs and expenses 1,278 6,658 36,614 30,210 — 1 390,304 (27,126 ) 437,939 Operating income (loss) (1,278 ) (6,658 ) 30,847 (30,210 ) (1 ) 464,244 — 456,944 Other income (expense) Income (loss) of unconsolidated affiliates 245,695 (13,250 ) (44,699 ) 454,402 461,434 — (1,103,582 ) — Interest expense, net of amounts capitalized (5,228 ) (21,339 ) (2,816 ) (59,812 ) (4,189 ) (95,104 ) 131,182 (57,306 ) Gain on extinguishment of debt, net — — — 11,066 — — — 11,066 Interest income and other, net 91,659 54 3,427 4,039 693 30,107 (131,182 ) (1,203 ) Income (loss) from continuing operations before income taxes 330,848 (41,193 ) (13,241 ) 379,485 457,937 399,247 (1,103,582 ) 409,501 Income tax provision — (23,656 ) (173 ) — — (32,291 ) — (56,120 ) Net income (loss) 330,848 (64,849 ) (13,414 ) 379,485 457,937 366,956 (1,103,582 ) 353,381 Net (income) loss attributable to noncontrolling interests — — — — — (42,231 ) 19,698 (22,533 ) Net income (loss) attributable to Noble Corporation 330,848 (64,849 ) (13,414 ) 379,485 457,937 324,725 (1,083,884 ) 330,848 Other comprehensive income (loss), net (1,232 ) — — — — (1,232 ) 1,232 (1,232 ) Comprehensive income (loss) attributable to Noble Corporation $ 329,616 $ (64,849 ) $ (13,414 ) $ 379,485 $ 457,937 $ 323,493 $ (1,082,652 ) $ 329,616 NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF INCOME and COMPREHENSIVE INCOME (LOSS) Six Months Ended June 30, 2016 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Operating revenues Contract drilling services $ — $ — $ 117,046 $ — $ — $ 1,396,458 $ (45,440 ) $ 1,468,064 Reimbursables — — 3,368 — — 35,171 — 38,539 Other — — — — — 853 — 853 Total operating revenues — — 120,414 — — 1,432,482 (45,440 ) 1,507,456 Operating costs and expenses Contract drilling services 2,717 11,713 26,518 51,604 — 444,412 (45,440 ) 491,524 Reimbursables — — 2,887 — — 27,417 — 30,304 Depreciation and amortization — — 43,770 — — 256,841 — 300,611 General and administrative 725 5,655 — 25,465 1 (7,388 ) — 24,458 Loss on impairment — — — — — 16,616 — 16,616 Total operating costs and expenses 3,442 17,368 73,175 77,069 1 737,898 (45,440 ) 863,513 Operating income (loss) (3,442 ) (17,368 ) 47,239 (77,069 ) (1 ) 694,584 — 643,943 Other income (expense) Income (loss) of unconsolidated affiliates 380,787 40,605 (58,282 ) 630,756 598,805 — (1,592,671 ) — Interest income (expense), net of amounts capitalized (22,784 ) (22,666 ) (5,564 ) (121,221 ) (8,464 ) (99,503 ) 165,796 (114,406 ) Gain on extinguishment of debt, net — — — 11,066 — — — 11,066 Interest income and other, net 93,308 50 6,903 19,360 762 43,477 (165,796 ) (1,936 ) Income (loss) from continuing operations before income taxes 447,869 621 (9,704 ) 462,892 591,102 638,558 (1,592,671 ) 538,667 Income tax (provision) benefit — (33,738 ) (378 ) — — (15,501 ) — (49,617 ) Net income (loss) 447,869 (33,117 ) (10,082 ) 462,892 591,102 623,057 (1,592,671 ) 489,050 Net (income) loss attributable to noncontrolling interests — — — — — (65,047 ) 23,866 (41,181 ) Net income (loss) attributable to Noble Corporation 447,869 (33,117 ) (10,082 ) 462,892 591,102 558,010 (1,568,805 ) 447,869 Other comprehensive income (loss), net 1,305 — — — — 1,305 (1,305 ) 1,305 Comprehensive income (loss) attributable to Noble Corporation $ 449,174 $ (33,117 ) $ (10,082 ) $ 462,892 $ 591,102 $ 559,315 $ (1,570,110 ) $ 449,174 NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS Six Months Ended June 30, 2017 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Cash flows from operating activities Net cash provided by (used in) operating activities $ 18,027 $ 128,277 $ 94,821 $ (173,014 ) $ 109,339 $ 91,919 $ — $ 269,369 Cash flows from investing activities Capital expenditures — — (1,309 ) — — (66,299 ) — (67,608 ) Proceeds from disposal of assets — — 7 — — 307 — 314 Net cash used in investing activities — — (1,302 ) — — (65,992 ) — (67,294 ) Cash flows from financing activities Repayment of long-term debt — — — (300,000 ) — — — (300,000 ) Debt issuance costs on senior notes and credit facility — — — (42 ) — — — (42 ) Dividends paid to noncontrolling interests — — — — — (5,393 ) — (5,393 ) Distributions to parent company, net 51,705 — — — — — — 51,705 Advances (to) from affiliates (72,255 ) (128,277 ) (104,255 ) 473,423 (109,339 ) (59,297 ) — — Net cash provided by (used in) financing activities (20,550 ) (128,277 ) (104,255 ) 173,381 (109,339 ) (64,690 ) — (253,730 ) Net change in cash and cash equivalents (2,523 ) — (10,736 ) 367 — (38,763 ) — (51,655 ) Cash and cash equivalents, beginning of period 2,537 — 10,855 — — 640,441 — 653,833 Cash and cash equivalents, end of period $ 14 $ — $ 119 $ 367 $ — $ 601,678 $ — $ 602,178 NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS Six Months Ended June 30, 2016 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Cash flows from operating activities Net cash provided by (used in) operating activities $ 87,431 $ (72,611 ) $ 66,135 $ (179,793 ) $ (7,703 ) $ 985,834 $ — $ 879,293 Cash flows from investing activities Capital expenditures — — (44,139 ) — — (114,770 ) — (158,909 ) Proceeds from disposal of assets — — — — — 21,190 — 21,190 Net cash used in investing activities — — (44,139 ) — — (93,580 ) — (137,719 ) Cash flows from financing activities Repayment of long-term debt — — — (322,207 ) — — — (322,207 ) Premiums paid on early repayment of long-term debt — — — (1,781 ) — — — (1,781 ) Dividends paid to noncontrolling interests — — — — — (41,088 ) — (41,088 ) Distributions to parent company, net (65,316 ) — — — — — — (65,316 ) Advances (to) from affiliates (23,514 ) 72,611 (23,921 ) 503,781 7,703 (536,660 ) — — Net cash provided by (used in) financing activities (88,830 ) 72,611 (23,921 ) 179,793 7,703 (577,748 ) — (430,392 ) Net change in cash and cash equivalents (1,399 ) — (1,925 ) — — 314,506 — 311,182 Cash and cash equivalents, beginning of period 1,627 — 2,101 — — 508,067 — 511,795 Cash and cash equivalents, end of period $ 228 $ — $ 176 $ — $ — $ 822,573 $ — $ 822,977

Organization and Basis of Pre26

Organization and Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidation	The accompanying unaudited condensed consolidated financial statements of Noble-UK and Noble-Cayman have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) as they pertain to Quarterly Reports on Form 10-Q. Accordingly, certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. The unaudited financial statements reflect all adjustments which are, in the opinion of management, necessary for a fair statement of the financial position and results of operations for the interim periods, on a basis consistent with the annual audited condensed consolidated financial statements. All such adjustments are of a recurring nature. The December 31, 2016 Condensed Consolidated Balance Sheets presented herein are derived from the December 31, 2016 audited consolidated financial statements, but does not include all disclosures required by GAAP. These interim financial statements should be read in conjunction with the consolidated financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2016 , filed by both Noble-UK and Noble-Cayman. The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year.
New Accounting Pronouncements	In May 2014, the FASB issued ASU No. 2014-9, which creates Accounting Standards Codification (“ASC”) Topic 606, “Revenue from Contracts with Customers,” and supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition,” including most industry-specific revenue recognition guidance throughout the Industry Topics of the Codification. In addition, ASU No. 2014-9 supersedes the cost guidance in Subtopic 605-35, “Revenue Recognition—Construction-Type and Production-Type Contracts,” and creates new Subtopic 340-40, “Other Assets and Deferred Costs—Contracts with Customers.” In summary, the core principle of Topic 606 is to recognize revenue when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. The amendments in ASU No. 2014-9 are effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period, and early application is permitted for periods beginning after December 15, 2016. We have formed an implementation work team, completed training on ASC Topic 606 and have begun a project to review relevant contracts. We plan on adopting the new standard effective January 1, 2018 concurrently with ASU No. 2016-2, Leases (ASC Topic 842) as discussed below and applying it retrospectively to all comparative periods presented. Upon adoption of these two new standards, we expect to have a lease component and a service component of revenue related to our drilling contracts. In February 2016, the FASB issued ASU No. 2016-2, which creates ASC Topic 842, “Leases.” This update increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. This guidance is effective for interim and annual reporting periods beginning after December 15, 2018. Under the updated accounting standards, we have preliminarily determined that our drilling contracts contain a lease component, and our adoption, therefore, will require that we separately recognize revenues associated with the lease and services components. Our adoption, and the ultimate effect on our condensed consolidated financial statements, will be based on an evaluation of the contract-specific facts and circumstances. Due to the interaction with the issued accounting standard on revenue recognition, we expect to adopt ASC 842 effective January 1, 2018, concurrently with ASC 606. We expect to apply the modified retrospective approach to our adoption. Our adoption will have an impact on how our condensed consolidated financial statements and related disclosures will be presented. We are currently evaluating the impact ASC 842 will have on our condensed consolidated financial statements, and to complete that evaluation we have completed training on the ASU, formed an implementation team and started the review and documentation of contracts. In March 2016, the FASB issued ASU No. 2016-9, which amends ASC Topic 718, “Compensation – Stock Compensation.” This amendment simplifies several aspects of the 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 guidance is effective for interim and annual reporting periods beginning after December 15, 2016. Under the new provision, current period excess tax benefits related to stock compensation are now recognized in our Condensed Consolidated Statement of Operations in “Provision for income taxes,” rather than on our Condensed Consolidated Balance Sheet and Condensed Consolidated Statement of Cash Flows. This update has been applied on a prospective basis. Changes to our Condensed Consolidated Statement of Cash Flows related to the reclassification of prior period excess tax benefits and employee taxes paid for share-based payment arrangements have been implemented on a retrospective basis. In accordance with our adoption of this update, prior period excess tax benefits of approximately $5.5 million , previously classified as a financing activity in “Employee stock transactions” on the June 30, 2016 Condensed Consolidated Statement of Cash Flows, are now classified as an operating activity in “Net change in other assets and liabilities” on the accompanying Condensed Consolidated Statement of Cash Flows for the comparative period. Additionally, prior period employee taxes paid for share-based payment arrangements of approximately $3.2 million , previously classified as an operating activity in “Net change in other assets and liabilities” on the June 30, 2016 Condensed Consolidated Statement of Cash Flows, are now classified as a financing activity in “Employee stock transactions” on the accompanying Condensed Consolidated Statement of Cash Flows for the comparative period. In October 2016, the FASB issued ASU No. 2016-16 which amends ASC Topic 740, “Income Taxes.” The amendments in this update improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. This guidance is effective for interim and annual reporting periods beginning after December 15, 2017. We are evaluating what impact, if any, the adoption of this guidance will have on our financial condition, results of operations, cash flows or financial disclosures.

Share Data (Tables)

Share Data (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share for Noble-UK	The following table presents the computation of basic and diluted earnings per share for Noble-UK: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Numerator: Basic Net income (loss) attributable to Noble-UK $ (93,350 ) $ 322,866 $ (395,044 ) $ 428,351 Net loss from discontinued operations, net of tax 1,486 — 1,486 — Earnings allocated to unvested share-based payment awards — (11,577 ) — (15,371 ) Net income (loss) from continuing operations to common shareholders - basic $ (91,864 ) $ 311,289 $ (393,558 ) $ 412,980 Diluted Net income (loss) attributable to Noble-UK $ (93,350 ) $ 322,866 $ (395,044 ) $ 428,351 Net loss from discontinued operations, net of tax 1,486 — 1,486 — Net income (loss) from continuing operations to common shareholders - diluted $ (91,864 ) $ 322,866 $ (393,558 ) $ 428,351 Denominator: Weighted average shares outstanding - basic 244,828 243,217 244,527 243,021 Incremental shares issuable from assumed exercise of stock options and outstanding unvested share-based payment awards — 9,045 — 9,045 Weighted average shares outstanding - diluted 244,828 252,262 244,527 252,066 Earnings per share Basic: Income (loss) from continuing operations $ (0.37 ) $ 1.28 $ (1.61 ) $ 1.70 Loss from discontinued operations (0.01 ) — (0.01 ) — Net income (loss) attributable to Noble-UK $ (0.38 ) $ 1.28 $ (1.62 ) $ 1.70 Diluted: Income (loss) from continuing operations $ (0.37 ) $ 1.28 $ (1.61 ) $ 1.70 Loss from discontinued operations (0.01 ) — (0.01 ) — Net income (loss) attributable to Noble-UK $ (0.38 ) $ 1.28 $ (1.62 ) $ 1.70 Dividends per share $ — $ 0.02 $ — $ 0.17

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment, at Cost	Property and equipment, at cost, as of June 30, 2017 and December 31, 2016 for Noble-UK consisted of the following: June 30, 2017 December 31, 2016 Drilling equipment and facilities $ 12,128,734 $ 12,048,571 Construction in progress 78,345 112,103 Other 203,778 204,214 Property and equipment, at cost $ 12,410,857 $ 12,364,888

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Schedule of Debt	Our total debt consisted of the following at June 30, 2017 and December 31, 2016 : June 30, 2017 December 31, 2016 Senior unsecured notes 2.50% Senior Notes due March 2017 $ — $ 299,992 5.75% Senior Notes due March 2018 249,864 249,771 7.50% Senior Notes due March 2019 201,695 201,695 4.90% Senior Notes due August 2020 167,600 167,576 4.625% Senior Notes due March 2021 208,552 208,538 3.95% Senior Notes due March 2022 125,503 125,488 7.75% Senior Notes due January 2024 981,187 980,117 7.70% Senior Notes due April 2025 448,958 448,909 6.20% Senior Notes due August 2040 399,899 399,898 6.05% Senior Notes due March 2041 397,779 397,758 5.25% Senior Notes due March 2042 498,384 498,369 8.70% Senior Notes due April 2045 394,636 394,613 Total debt 4,074,057 4,372,724 Less: Unamortized debt issuance costs (30,688 ) (32,613 ) Less: Current maturities of long-term debt (1) (249,475 ) (299,882 ) Long-term debt, net of debt issuance costs $ 3,793,894 $ 4,040,229 (1) Presented net of current portion of unamortized debt issuance costs of $0.4 million and $0.1 million at June 30, 2017 and December 31, 2016 , respectively.
Estimated Fair Value of Our Long-Term Debt, not Including Effect of Unamortized Debt Issuance Costs	The following table presents the estimated fair value of our total debt, not including the effect of unamortized debt issuance costs, as of June 30, 2017 and December 31, 2016 , respectively: June 30, 2017 December 31, 2016 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Senior unsecured notes: 2.50% Senior Notes due March 2017 $ — $ — $ 299,992 $ 299,128 5.75% Senior Notes due March 2018 249,864 250,682 249,771 249,808 7.50% Senior Notes due March 2019 201,695 204,378 201,695 209,524 4.90% Senior Notes due August 2020 167,600 153,912 167,576 167,329 4.625% Senior Notes due March 2021 208,552 171,182 208,538 196,416 3.95% Senior Notes due March 2022 125,503 99,223 125,488 112,791 7.75% Senior Notes due January 2024 981,187 793,560 980,117 945,317 7.70% Senior Notes due April 2025 448,958 348,899 448,909 423,267 6.20% Senior Notes due August 2040 399,899 244,636 399,898 280,221 6.05% Senior Notes due March 2041 397,779 236,908 397,758 273,854 5.25% Senior Notes due March 2042 498,384 281,715 498,369 325,814 8.70% Senior Notes due April 2045 394,636 292,756 394,613 328,608 Total debt $ 4,074,057 $ 3,077,851 $ 4,372,724 $ 3,812,077

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Pension Costs	Pension costs include the following components for the three months ended June 30, 2017 and 2016 : Three Months Ended June 30, 2017 2016 Non-U.S. U.S. Non-U.S. U.S. Service cost $ — $ — $ 799 $ 1,662 Interest cost 492 2,149 641 2,389 Return on plan assets (721 ) (2,941 ) (904 ) (3,097 ) Amortization of prior service cost — — 27 29 Recognized net actuarial loss 245 366 38 1,100 Net pension benefit cost (gain) $ 16 $ (426 ) $ 601 $ 2,083 Pension costs include the following components for the six months ended June 30, 2017 and 2016 : Six Months Ended June 30, 2017 2016 Non-U.S. U.S. Non-U.S. U.S. Service cost $ — $ — $ 1,574 $ 3,324 Interest cost 970 4,297 1,275 4,778 Return on plan assets (1,422 ) (5,882 ) (1,799 ) (6,194 ) Amortization of prior service cost — — 53 58 Recognized net actuarial loss 511 732 75 2,200 Net pension benefit cost (gain) $ 59 $ (853 ) $ 1,178 $ 4,166

Derivative Instruments and He31

Derivative Instruments and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summarization of Financial Statement Presentation and Fair Value of Derivative Positions	The following table, together with Note 12— Fair Value of Financial Instruments , summarizes the financial statement presentation and fair value of our derivative positions as of June 30, 2017 and December 31, 2016 : Estimated fair value Balance sheet classification June 30, December 31, Asset derivatives Cash flow hedges Foreign currency forward contracts Prepaid expenses and other current assets $ 739 $ — Non-designated derivatives FCX Settlement Prepaid expenses and other current assets $ — $ 14,400
Summarization of Recognized Gains and Losses of Cash Flow Hedges	To supplement the fair value disclosures in Note 12— Fair Value of Financial Instruments , the following table summarizes the recognized gains and losses of cash flow hedges and non-designated derivatives through AOCL or as “contract drilling services” revenue or expense for the three months ended June 30, 2017 and 2016 : Unrealized gain/(loss) recognized through AOCL Gain/(loss) reclassified from AOCL to "contract drilling services" expense Gain/(loss) recognized through "contract drilling services" revenue 2017 2016 2017 2016 2017 2016 Cash flow hedges Foreign currency forward contracts $ 849 $ (2,054 ) $ 210 $ 290 $ — $ — Non-designated derivatives FCX Settlement $ — $ — $ — $ — $ (6,500 ) $ 17,600 To supplement the fair value disclosures in Note 12— Fair Value of Financial Instruments , the following table summarizes the recognized gains and losses of cash flow hedges and non-designated derivatives through AOCL or as “contract drilling services” revenue or expense for the six months ended June 30, 2017 and 2016 : Unrealized gain/(loss) recognized through AOCL Gain/(loss) reclassified from AOCL to "contract drilling services" expense Gain/(loss) recognized through "contract drilling services" revenue 2017 2016 2017 2016 2017 2016 Cash flow hedges Foreign currency forward contracts $ 739 $ (1,068 ) $ — $ — $ 137 $ 382 Non-designated derivatives FCX Settlement $ — $ — $ — $ — $ (14,400 ) $ 17,600

Fair Value of Financial Instr32

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Carrying Amount and Estimated Fair Value of Financial Instruments	The following tables present the carrying amount and estimated fair value of our financial instruments recognized at fair value on a recurring basis: June 30, 2017 Estimated Fair Value Measurements Carrying Amount Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs(Level 2) Significant Unobservable Inputs (Level 3) Assets - Marketable securities $ 7,077 $ 7,077 $ — $ — Foreign currency forward contracts $ 739 $ — $ 739 $ — December 31, 2016 Estimated Fair Value Measurements Carrying Amount Quoted Prices in Active Markets(Level 1) Significant Other Observable Inputs(Level 2) Significant Unobservable Inputs (Level 3) Assets - Marketable securities $ 6,246 $ 6,246 $ — $ — FCX Settlement $ 14,400 $ — $ — $ 14,400
Schedule of Activity Related to FCX Settlement Asset	The following table details the activity related to the FCX Settlement asset classified within Level 3 of the valuation hierarchy for the periods indicated: Balance as of December 31, 2016 $ 14,400 Fair value recognized in earnings (7,900 ) Balance as of March 31, 2017 $ 6,500 Fair value recognized in earnings (6,500 ) Balance as of June 30, 2017 $ —

Accumulated Other Comprehensi33

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Changes in AOCL by Component	The following table presents the changes in the accumulated balances for each component of AOCL for the six months ended June 30, 2017 and 2016 . All amounts within the tables are shown net of tax. Unrealized Gains /(Losses) on Cash Flow Hedges (1) Defined Benefit Pension Items (2) Foreign Currency Items Total Balance at December 31, 2015 $ — $ (46,919 ) $ (16,256 ) $ (63,175 ) Activity during period: Other comprehensive income (loss) before reclassifications (1,068 ) — 806 (262 ) Amounts reclassified from AOCL — 1,567 — 1,567 Net other comprehensive income (loss) (1,068 ) 1,567 806 1,305 Balance at June 30, 2016 $ (1,068 ) $ (45,352 ) $ (15,450 ) $ (61,870 ) Balance at December 31, 2016 $ — $ (35,865 ) $ (16,275 ) $ (52,140 ) Activity during period: Other comprehensive income (loss) before reclassifications 739 — 280 1,019 Amounts reclassified from AOCL — 767 — 767 Net other comprehensive income (loss) 739 767 280 1,786 Balance at June 30, 2017 $ 739 $ (35,098 ) $ (15,995 ) $ (50,354 ) (1) Gains/(losses) on cash flow hedges are related to foreign currency forward contracts. Reclassifications from AOCL are recognized through “contract drilling services” expense on our Condensed Consolidated Statements of Operations. See Note 11— Derivative Instruments and Hedging Activities for additional information. (2) Defined benefit pension items relate to actuarial changes and the amortization of prior service costs. Reclassifications from AOCL are recognized as expense on our Condensed Consolidated Statements of Operations through either “Contract drilling services” or “General and administrative.” See Note 10— Employee Benefit Plans for additional information.

Supplemental Financial Inform34

Supplemental Financial Information (Tables)	6 Months Ended
	Jun. 30, 2017
Supplemental Financial Information [Abstract]
Effect of Changes in Other Assets and Liabilities on Cash Flows from Operating Activities	The net effect of changes in other assets and liabilities on cash flows from operating activities is as follows: Noble-UK Noble-Cayman Six Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Accounts receivable $ 76,495 $ 147,454 $ 76,495 $ 147,454 Other current assets 15,896 75,949 12,475 73,543 Other assets (40,078 ) 104,416 (47,166 ) 102,335 Accounts payable (8,881 ) (50,663 ) (8,754 ) (48,719 ) Other current liabilities (19,385 ) (74,247 ) (18,293 ) (67,843 ) Other liabilities 6,703 (38,590 ) 13,547 (39,933 ) $ 30,750 $ 164,319 $ 28,304 $ 166,837

Condensed Consolidating Finan35

Condensed Consolidating Financial Information (Tables)	6 Months Ended
	Jun. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Guarantor Obligations	Noble-Cayman, or one or more 100 percent owned subsidiaries of Noble-Cayman, is a co-issuer or full and unconditional guarantor or otherwise obligated as of June 30, 2017 as follows: Issuer Notes (Co-Issuer(s)) Guarantor $250 million 5.75% Senior Notes due 2018 NHIL Noble-Cayman $202 million 7.50% Senior Notes due 2019 NHUS Noble-Cayman Noble Drilling Holding, LLC ("NDH") Noble Drilling Services 6 LLC ("NDS6") $168 million 4.90% Senior Notes due 2020 NHIL Noble-Cayman $209 million 4.625% Senior Notes due 2021 NHIL Noble-Cayman $126 million 3.95% Senior Notes due 2022 NHIL Noble-Cayman $1 billion 7.75% Senior Notes due 2024 NHIL Noble-Cayman $450 million 7.70% Senior Notes due 2025 NHIL Noble-Cayman $400 million 6.20% Senior Notes due 2040 NHIL Noble-Cayman $400 million 6.05% Senior Notes due 2041 NHIL Noble-Cayman $500 million 5.25% Senior Notes due 2042 NHIL Noble-Cayman $400 million 8.70% Senior Notes due 2045 NHIL Noble-Cayman
Condensed Consolidating Balance Sheet	The following condensed consolidating financial statements of Noble-Cayman, NHUS, NDH, NHIL, NDS6 and all other subsidiaries present investments in both consolidated and unconsolidated affiliates using the equity method of accounting. NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET June 30, 2017 (in thousands) (Unaudited) Noble - NHUS NDH NHIL NDS6 Other Consolidating Total ASSETS Current assets Cash and cash equivalents $ 14 $ — $ 119 $ 367 $ — $ 601,678 $ — $ 602,178 Accounts receivable — — 31,008 — — 211,649 — 242,657 Taxes receivable — — — — — 18,169 — 18,169 Short-term notes receivable from affiliates — — 119,476 — 2,373,452 — (2,492,928 ) — Accounts receivable from affiliates 619,661 92,349 149,005 60,944 357,957 5,824,879 (7,104,795 ) — Prepaid expenses and other current assets 96 — 1,040 49 1 73,014 — 74,200 Total current assets 619,771 92,349 300,648 61,360 2,731,410 6,729,389 (9,597,723 ) 937,204 Property and equipment, at cost — — 1,070,746 — — 11,340,111 — 12,410,857 Accumulated depreciation — — (246,631 ) — — (2,325,931 ) — (2,572,562 ) Property and equipment, net — — 824,115 — — 9,014,180 — 9,838,295 Notes receivable from affiliates 3,177,248 — 1,053,783 — 3,943,299 1,171,304 (9,345,634 ) — Investments in affiliates 5,029,983 3,179,576 4,698,262 12,517,083 7,275,866 — (32,700,770 ) — Other assets 3,462 16,775 6,419 — — 222,138 — 248,794 Total assets $ 8,830,464 $ 3,288,700 $ 6,883,227 $ 12,578,443 $ 13,950,575 $ 17,137,011 $ (51,644,127 ) $ 11,024,293 LIABILITIES AND EQUITY Current liabilities Short-term notes payables to affiliates $ — $ 1,605,243 $ — $ — $ — $ 887,685 $ (2,492,928 ) $ — Current maturities of long-term debt — — — 249,475 — — — 249,475 Accounts payable — — 2,856 — — 83,558 — 86,414 Accrued payroll and related costs — — 4,848 — — 33,492 — 38,340 Accounts payable to affiliates 3,434,157 456,573 1,857,871 404,332 — 951,862 (7,104,795 ) — Taxes payable — 41,361 — — — 47,951 — 89,312 Interest payable 24 — — 95,184 4,454 — — 99,662 Other current liabilities 16 — 945 — — 83,517 — 84,478 Total current liabilities 3,434,197 2,103,177 1,866,520 748,991 4,454 2,088,065 (9,597,723 ) 647,681 Long-term debt — — — 3,592,411 201,483 — — 3,793,894 Notes payable to affiliates — 700,000 470,643 3,175,662 — 4,999,329 (9,345,634 ) — Deferred income taxes — — — — — 212,526 — 212,526 Other liabilities 19,929 — 11,010 — — 266,867 — 297,806 Total liabilities 3,454,126 2,803,177 2,348,173 7,517,064 205,937 7,566,787 (18,943,357 ) 4,951,907 Commitments and contingencies Total shareholder equity 5,376,338 485,523 4,535,054 5,061,379 13,744,638 8,471,145 (32,297,739 ) 5,376,338 Noncontrolling interests — — — — — 1,099,079 (403,031 ) 696,048 Total equity 5,376,338 485,523 4,535,054 5,061,379 13,744,638 9,570,224 (32,700,770 ) 6,072,386 Total liabilities and equity $ 8,830,464 $ 3,288,700 $ 6,883,227 $ 12,578,443 $ 13,950,575 $ 17,137,011 $ (51,644,127 ) $ 11,024,293 NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET December 31, 2016 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total ASSETS Current assets Cash and cash equivalents $ 2,537 $ — $ 10,855 $ — $ — $ 640,441 $ — $ 653,833 Accounts receivable — — 33,162 — — 285,990 — 319,152 Taxes receivable — 21,428 — — — 34,052 — 55,480 Short-term notes receivable from affiliates — — 243,915 — 1,349,708 52,611 (1,646,234 ) — Accounts receivable from affiliates 361,313 — 137,476 67,560 85,274 3,038,658 (3,690,281 ) — Prepaid expenses and other current assets 270 — 1,611 — — 86,868 — 88,749 Total current assets 364,120 21,428 427,019 67,560 1,434,982 4,138,620 (5,336,515 ) 1,117,214 Property and equipment, at cost — — 2,376,862 — — 9,988,026 — 12,364,888 Accumulated depreciation — — (428,308 ) — — (1,874,632 ) — (2,302,940 ) Property and equipment, net — — 1,948,554 — — 8,113,394 — 10,061,948 Notes receivable from affiliates 3,304,672 — 112,706 69,564 5,000 1,798,614 (5,290,556 ) — Investments in affiliates 2,848,855 2,007,016 1,411,874 8,369,728 6,129,082 — (20,766,555 ) — Other assets 4,292 — 5,687 — — 168,573 — 178,552 Total assets $ 6,521,939 $ 2,028,444 $ 3,905,840 $ 8,506,852 $ 7,569,064 $ 14,219,201 $ (31,393,626 ) $ 11,357,714 LIABILITIES AND EQUITY Current liabilities Short-term notes payables to affiliates $ — $ 171,925 $ — $ — $ — $ 1,474,309 $ (1,646,234 ) $ — Current maturities of long-term debt — — — 299,882 — — — 299,882 Accounts payable — — 4,228 — — 103,640 — 107,868 Accrued payroll and related costs — — 4,882 — — 43,437 — 48,319 Accounts payable to affiliates 818,737 111,801 1,995,788 123,642 — 640,313 (3,690,281 ) — Taxes payable — — — — — 46,561 — 46,561 Interest payable 48 — — 56,839 4,412 — — 61,299 Other current liabilities 12 — 4,296 — — 63,004 — 67,312 Total current liabilities 818,797 283,726 2,009,194 480,363 4,412 2,371,264 (5,336,515 ) 631,241 Long-term debt — — — 3,838,807 201,422 — — 4,040,229 Notes payable to affiliates — 700,000 467,139 744,181 — 3,379,236 (5,290,556 ) — Deferred income taxes — — 534 — — 1,550 — 2,084 Other liabilities 19,929 — 24,035 — — 248,219 — 292,183 Total liabilities 838,726 983,726 2,500,902 5,063,351 205,834 6,000,269 (10,627,071 ) 4,965,737 Commitments and contingencies Total shareholder equity 5,683,213 1,044,718 1,404,938 3,443,501 7,363,230 7,106,323 (20,362,710 ) 5,683,213 Noncontrolling interests — — — — — 1,112,609 (403,845 ) 708,764 Total equity 5,683,213 1,044,718 1,404,938 3,443,501 7,363,230 8,218,932 (20,766,555 ) 6,391,977 Total liabilities and equity $ 6,521,939 $ 2,028,444 $ 3,905,840 $ 8,506,852 $ 7,569,064 $ 14,219,201 $ (31,393,626 ) $ 11,357,714
Condensed Consolidating Statement of Income	NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS and COMPREHENSIVE INCOME (LOSS) Three Months Ended June 30, 2017 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Operating revenues Contract drilling services $ — $ — $ 39,988 $ — $ — $ 241,488 $ (9,944 ) $ 271,532 Reimbursables — — 892 — — 5,707 — 6,599 Other — — — — — 11 — 11 Total operating revenues — — 40,880 — — 247,206 (9,944 ) 278,142 Operating costs and expenses Contract drilling services (866 ) 3,362 12,687 (10,834 ) — 167,452 (9,944 ) 161,857 Reimbursables — — 472 — — 3,922 — 4,394 Depreciation and amortization — — 14,005 — — 120,628 — 134,633 General and administrative (442 ) 1,538 — (5,941 ) 5 18,071 — 13,231 Total operating costs and expenses (1,308 ) 4,900 27,164 (16,775 ) 5 310,073 (9,944 ) 314,115 Operating income (loss) 1,308 (4,900 ) 13,716 16,775 (5 ) (62,867 ) — (35,973 ) Other income (expense) Income (loss) of unconsolidated affiliates (85,274 ) (99,354 ) 39,114 48,476 5,647 — 91,391 — Income (loss) of unconsolidated affiliates - discontinued operations, net of tax 2,967 4,566 — — — — (7,533 ) — Interest income (expense), net of amounts capitalized (2,578 ) (6,345 ) (3,291 ) (107,686 ) (3,854 ) (23,134 ) 73,679 (73,209 ) Interest income and other, net 2,646 (26 ) 14,309 720 53,560 5,198 (73,679 ) 2,728 Income (loss) from continuing operations before income taxes (80,931 ) (106,059 ) 63,848 (41,715 ) 55,348 (80,803 ) 83,858 (106,454 ) Income tax benefit (provision) — 66,127 (835 ) — — (47,079 ) — 18,213 Net income (loss) from continuing operations (80,931 ) (39,932 ) 63,013 (41,715 ) 55,348 (127,882 ) 83,858 (88,241 ) Net income (loss) from discontinuing operations, net of tax — (1,598 ) — — — 4,565 — 2,967 Net Income (loss) (80,931 ) (41,530 ) 63,013 (41,715 ) 55,348 (123,317 ) 83,858 (85,274 ) Net (income) loss attributable to noncontrolling interests — — — — — 4,821 (478 ) 4,343 Net income (loss) attributable to Noble Corporation (80,931 ) (41,530 ) 63,013 (41,715 ) 55,348 (118,496 ) 83,380 (80,931 ) Other comprehensive income (loss), net 1,318 — — — — 1,318 (1,318 ) 1,318 Comprehensive income (loss) attributable to Noble Corporation $ (79,613 ) $ (41,530 ) $ 63,013 $ (41,715 ) $ 55,348 $ (117,178 ) $ 82,062 $ (79,613 ) NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS and COMPREHENSIVE INCOME (LOSS) Six Months Ended June 30, 2017 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Operating revenues Contract drilling services $ — $ — $ 87,092 $ — $ — $ 566,212 $ (27,113 ) $ 626,191 Reimbursables — — 2,028 — — 12,875 — 14,903 Other — — — — — 24 — 24 Total operating revenues — — 89,120 — — 579,111 (27,113 ) 641,118 Operating costs and expenses Contract drilling services 135 5,933 24,186 1,653 — 317,079 (27,113 ) 321,873 Reimbursables — — 1,292 — — 8,248 — 9,540 Depreciation and amortization — — 30,520 — — 239,831 — 270,351 General and administrative 71 2,845 — 892 9 18,478 — 22,295 Total operating costs and expenses 206 8,778 55,998 2,545 9 583,636 (27,113 ) 624,059 Operating income (loss) (206 ) (8,778 ) 33,122 (2,545 ) (9 ) (4,525 ) — 17,059 Other income (expense) Income (loss) of unconsolidated affiliates (380,376 ) (412,919 ) 41,483 145,293 56,266 — 550,253 — Income (loss) of unconsolidated affiliates - discontinued operations, net of tax 2,967 4,566 — — — — (7,533 ) — Interest income (expense), net of amounts capitalized (5,183 ) (23,856 ) (6,383 ) (213,688 ) (7,671 ) (80,447 ) 190,572 (146,656 ) Interest income and other, net 7,278 (91 ) 54,211 4,923 116,978 11,120 (190,572 ) 3,847 Income (loss) from continuing operations before income taxes (375,520 ) (441,078 ) 122,433 (66,017 ) 165,564 (73,852 ) 542,720 (125,750 ) Income tax benefit (provision) — 116,586 (326 ) — — (355,420 ) — (239,160 ) Net income (loss) from continuing operations (375,520 ) (324,492 ) 122,107 (66,017 ) 165,564 (429,272 ) 542,720 (364,910 ) Net income (loss) from discontinuing operations, net of tax — (1,598 ) — — — 4,565 — 2,967 Net Income (loss) (375,520 ) (326,090 ) 122,107 (66,017 ) 165,564 (424,707 ) 542,720 (361,943 ) Net income attributable to noncontrolling interests — — — — — (12,761 ) (816 ) (13,577 ) Net income (loss) attributable to Noble Corporation (375,520 ) (326,090 ) 122,107 (66,017 ) 165,564 (437,468 ) 541,904 (375,520 ) Other comprehensive income (loss), net 1,786 — — — — 1,786 (1,786 ) 1,786 Comprehensive income (loss) attributable to Noble Corporation $ (373,734 ) $ (326,090 ) $ 122,107 $ (66,017 ) $ 165,564 $ (435,682 ) $ 540,118 $ (373,734 ) NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF INCOME and COMPREHENSIVE INCOME (LOSS) Three Months Ended June 30, 2016 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Operating revenues Contract drilling services $ — $ — $ 64,839 $ — $ — $ 838,984 $ (27,126 ) $ 876,697 Reimbursables — — 2,622 — — 15,311 — 17,933 Other — — — — — 253 — 253 Total operating revenues — — 67,461 — — 854,548 (27,126 ) 894,883 Operating costs and expenses Contract drilling services 972 4,318 11,960 19,290 — 232,820 (27,126 ) 242,234 Reimbursables — — 2,345 — — 11,953 — 14,298 Depreciation and amortization — — 22,309 — — 128,629 — 150,938 General and administrative 306 2,340 — 10,920 1 286 — 13,853 Loss on impairment — — — — — 16,616 — 16,616 Total operating costs and expenses 1,278 6,658 36,614 30,210 — 1 390,304 (27,126 ) 437,939 Operating income (loss) (1,278 ) (6,658 ) 30,847 (30,210 ) (1 ) 464,244 — 456,944 Other income (expense) Income (loss) of unconsolidated affiliates 245,695 (13,250 ) (44,699 ) 454,402 461,434 — (1,103,582 ) — Interest expense, net of amounts capitalized (5,228 ) (21,339 ) (2,816 ) (59,812 ) (4,189 ) (95,104 ) 131,182 (57,306 ) Gain on extinguishment of debt, net — — — 11,066 — — — 11,066 Interest income and other, net 91,659 54 3,427 4,039 693 30,107 (131,182 ) (1,203 ) Income (loss) from continuing operations before income taxes 330,848 (41,193 ) (13,241 ) 379,485 457,937 399,247 (1,103,582 ) 409,501 Income tax provision — (23,656 ) (173 ) — — (32,291 ) — (56,120 ) Net income (loss) 330,848 (64,849 ) (13,414 ) 379,485 457,937 366,956 (1,103,582 ) 353,381 Net (income) loss attributable to noncontrolling interests — — — — — (42,231 ) 19,698 (22,533 ) Net income (loss) attributable to Noble Corporation 330,848 (64,849 ) (13,414 ) 379,485 457,937 324,725 (1,083,884 ) 330,848 Other comprehensive income (loss), net (1,232 ) — — — — (1,232 ) 1,232 (1,232 ) Comprehensive income (loss) attributable to Noble Corporation $ 329,616 $ (64,849 ) $ (13,414 ) $ 379,485 $ 457,937 $ 323,493 $ (1,082,652 ) $ 329,616 NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF INCOME and COMPREHENSIVE INCOME (LOSS) Six Months Ended June 30, 2016 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Operating revenues Contract drilling services $ — $ — $ 117,046 $ — $ — $ 1,396,458 $ (45,440 ) $ 1,468,064 Reimbursables — — 3,368 — — 35,171 — 38,539 Other — — — — — 853 — 853 Total operating revenues — — 120,414 — — 1,432,482 (45,440 ) 1,507,456 Operating costs and expenses Contract drilling services 2,717 11,713 26,518 51,604 — 444,412 (45,440 ) 491,524 Reimbursables — — 2,887 — — 27,417 — 30,304 Depreciation and amortization — — 43,770 — — 256,841 — 300,611 General and administrative 725 5,655 — 25,465 1 (7,388 ) — 24,458 Loss on impairment — — — — — 16,616 — 16,616 Total operating costs and expenses 3,442 17,368 73,175 77,069 1 737,898 (45,440 ) 863,513 Operating income (loss) (3,442 ) (17,368 ) 47,239 (77,069 ) (1 ) 694,584 — 643,943 Other income (expense) Income (loss) of unconsolidated affiliates 380,787 40,605 (58,282 ) 630,756 598,805 — (1,592,671 ) — Interest income (expense), net of amounts capitalized (22,784 ) (22,666 ) (5,564 ) (121,221 ) (8,464 ) (99,503 ) 165,796 (114,406 ) Gain on extinguishment of debt, net — — — 11,066 — — — 11,066 Interest income and other, net 93,308 50 6,903 19,360 762 43,477 (165,796 ) (1,936 ) Income (loss) from continuing operations before income taxes 447,869 621 (9,704 ) 462,892 591,102 638,558 (1,592,671 ) 538,667 Income tax (provision) benefit — (33,738 ) (378 ) — — (15,501 ) — (49,617 ) Net income (loss) 447,869 (33,117 ) (10,082 ) 462,892 591,102 623,057 (1,592,671 ) 489,050 Net (income) loss attributable to noncontrolling interests — — — — — (65,047 ) 23,866 (41,181 ) Net income (loss) attributable to Noble Corporation 447,869 (33,117 ) (10,082 ) 462,892 591,102 558,010 (1,568,805 ) 447,869 Other comprehensive income (loss), net 1,305 — — — — 1,305 (1,305 ) 1,305 Comprehensive income (loss) attributable to Noble Corporation $ 449,174 $ (33,117 ) $ (10,082 ) $ 462,892 $ 591,102 $ 559,315 $ (1,570,110 ) $ 449,174
Condensed Consolidating Statement of Cash Flows	NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS Six Months Ended June 30, 2017 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Cash flows from operating activities Net cash provided by (used in) operating activities $ 18,027 $ 128,277 $ 94,821 $ (173,014 ) $ 109,339 $ 91,919 $ — $ 269,369 Cash flows from investing activities Capital expenditures — — (1,309 ) — — (66,299 ) — (67,608 ) Proceeds from disposal of assets — — 7 — — 307 — 314 Net cash used in investing activities — — (1,302 ) — — (65,992 ) — (67,294 ) Cash flows from financing activities Repayment of long-term debt — — — (300,000 ) — — — (300,000 ) Debt issuance costs on senior notes and credit facility — — — (42 ) — — — (42 ) Dividends paid to noncontrolling interests — — — — — (5,393 ) — (5,393 ) Distributions to parent company, net 51,705 — — — — — — 51,705 Advances (to) from affiliates (72,255 ) (128,277 ) (104,255 ) 473,423 (109,339 ) (59,297 ) — — Net cash provided by (used in) financing activities (20,550 ) (128,277 ) (104,255 ) 173,381 (109,339 ) (64,690 ) — (253,730 ) Net change in cash and cash equivalents (2,523 ) — (10,736 ) 367 — (38,763 ) — (51,655 ) Cash and cash equivalents, beginning of period 2,537 — 10,855 — — 640,441 — 653,833 Cash and cash equivalents, end of period $ 14 $ — $ 119 $ 367 $ — $ 601,678 $ — $ 602,178 NOBLE CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS Six Months Ended June 30, 2016 (in thousands) (Unaudited) Noble- NHUS NDH NHIL NDS6 Other Consolidating Total Cash flows from operating activities Net cash provided by (used in) operating activities $ 87,431 $ (72,611 ) $ 66,135 $ (179,793 ) $ (7,703 ) $ 985,834 $ — $ 879,293 Cash flows from investing activities Capital expenditures — — (44,139 ) — — (114,770 ) — (158,909 ) Proceeds from disposal of assets — — — — — 21,190 — 21,190 Net cash used in investing activities — — (44,139 ) — — (93,580 ) — (137,719 ) Cash flows from financing activities Repayment of long-term debt — — — (322,207 ) — — — (322,207 ) Premiums paid on early repayment of long-term debt — — — (1,781 ) — — — (1,781 ) Dividends paid to noncontrolling interests — — — — — (41,088 ) — (41,088 ) Distributions to parent company, net (65,316 ) — — — — — — (65,316 ) Advances (to) from affiliates (23,514 ) 72,611 (23,921 ) 503,781 7,703 (536,660 ) — — Net cash provided by (used in) financing activities (88,830 ) 72,611 (23,921 ) 179,793 7,703 (577,748 ) — (430,392 ) Net change in cash and cash equivalents (1,399 ) — (1,925 ) — — 314,506 — 311,182 Cash and cash equivalents, beginning of period 1,627 — 2,101 — — 508,067 — 511,795 Cash and cash equivalents, end of period $ 228 $ — $ 176 $ — $ — $ 822,573 $ — $ 822,977

Organization and Basis of Pre36

Organization and Basis of Presentation - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)VesselSegment	Jun. 30, 2016USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of jackups | Vessel	14
Number of drillships | Vessel	8
Number of semisubmersibles | Vessel	6
Number of reportable segments | Segment	1
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating activities in Consolidated Statement of Cash Flows | $	$ 254,285	$ 859,223
Accounting Standards Update 2016-09, Excess Tax Benefit Component [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating activities in Consolidated Statement of Cash Flows | $		5,500
Accounting Standards Update 2016-09, Statutory Tax Withholding Component [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating activities in Consolidated Statement of Cash Flows | $		$ (3,200)

Spin-off of Paragon Offshore 37

Spin-off of Paragon Offshore plc ("Paragon Offshore") - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	May 02, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net charges recognized relating to Paragon Offshore emergence from bankruptcy	$ 15,900		$ 15,900
Net loss from discontinued operations, net of tax	$ (1,486)	$ 0	$ (1,486)	$ 0
Paragon Offshore [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Litigation trust fund					$ 10,000

Consolidated Joint Ventures - A

Consolidated Joint Ventures - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)JointVentureRig	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Schedule Of Equity Method Investments [Line Items]
Percent of interest in joint ventures	50.00%
Number of joint ventures acquired | JointVenture	2
Number of bully class drillships | Rig	2
Percentage of dividends paid to joint venture partner	50.00%
Cash and cash equivalents	$ 602,977	$ 822,978	$ 725,722	$ 512,245
Bully Joint Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Dividends approved	52,600	82,200
Dividends paid	10,800	$ 82,200
Carrying amount of the drillships	1,400,000		1,400,000
Cash and cash equivalents	$ 83,300		$ 34,700

Share Data - Computation of Bas

Share Data - Computation of Basic and Diluted Earnings Per Share for Noble-UK (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Basic
Net income (loss) attributable to the company	$ (93,350)	$ 322,866	$ (395,044)	$ 428,351
Net loss from discontinued operations, net of tax	1,486	0	1,486	0
Earnings allocated to unvested share-based payment awards	0	(11,577)	0	(15,371)
Net income (loss) from continuing operations to common shareholders - basic	(91,864)	311,289	(393,558)	412,980
Diluted
Net income (loss) attributable to the company	(93,350)	322,866	(395,044)	428,351
Net income (loss) from continuing operations to common shareholders - diluted	$ (91,864)	$ 322,866	$ (393,558)	$ 428,351
Denominator:
Weighted average shares outstanding - basic	244,828	243,217	244,527	243,021
Incremental shares issuable from assumed exercise of stock options and outstanding unvested share-based payment awards	0	9,045	0	9,045
Weighted average shares outstanding - diluted	244,828	252,262	244,527	252,066
Basic:
Income (loss) from continuing operations (usd per share)	$ (0.37)	$ 1.28	$ (1.61)	$ 1.70
Loss from discontinued operations (usd per share)	(0.01)	0	(0.01)	0
Net income (loss) attributable to Noble Corporation plc (usd per share)	(0.38)	1.28	(1.62)	1.70
Diluted:
Income (loss) from continuing operations (usd per share)	(0.37)	1.28	(1.61)	1.70
Loss from discontinued operations (usd per share)	(0.01)	0	(0.01)	0
Net income (loss) attributable to Noble-UK (usd per share)	(0.38)	1.28	(1.62)	1.70
Dividends per share (usd per share)	$ 0	$ 0.02	$ 0	$ 0.17

Share Data - Additional Informa

Share Data - Additional Information (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Apr. 22, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares outstanding and trading	244,903,000		244,903,000	243,239,000
Additional conditionally authorized shares without additional shareholder approval	53,000,000		53,000,000
Current nominal value per share	$ 0.01		$ 0.01	$ 0.01
Repurchased shares					37,000,000
Stock repurchase expiration date			Apr. 22, 2016
Equity Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the diluted net income per share	1,300,000	1,600,000
Unvested Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the diluted net income per share	11,300,000		11,300,000

Contract Settlement and Termi41

Contract Settlement and Termination Agreement with Freeport-McMoRan Inc - Additional Information (Detail) - Noble Corp [Member] - FCX settlement [Member] $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2017USD ($)
Contract Settlement And Termination Agreement [Line Items]
Losses recognized related to contingent payments	$ (6.5)	$ (14.4)
Estimated fair value of contingent payments	$ 0	$ 0

Receivables from Customers - Ad

Receivables from Customers - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016
Accounts Notes And Loans Receivable [Line Items]
Receivables disputed by customer and written off	$ 15,900	$ 14,419	$ 0
Petroleos Mexicanos [Member] | Contract Drilling Costs [Member] | Uncollectible Receivables [Member]
Accounts Notes And Loans Receivable [Line Items]
Receivables disputed by customer and written off		14,400
Petroleos Mexicanos [Member] | Other Assets [Member]
Accounts Notes And Loans Receivable [Line Items]
Approximate receivable	$ 14,400	$ 14,400

Property and Equipment - Proper

Property and Equipment - Property and Equipment, at Cost (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 12,410,857	$ 12,364,888
Drilling Equipment and Facilities [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	12,128,734	12,048,571
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	78,345	112,103
Other [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 203,778	$ 204,214

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Abstract]
Capital expenditures		$ 48,957	$ 120,531
Capitalized interest on construction-in-progress	$ 3,600		$ 7,400

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Less: Unamortized debt issuance costs	$ (30,688)	$ (32,613)
Less: Current maturities of long-term debt	(249,475)	(299,882)
Long-term debt, net of debt issuance costs	3,793,894	4,040,229
Unamortized debt issuance expense, current	400	100
Senior Notes [Member]
Debt Instrument [Line Items]
Total debt	4,074,057	4,372,724
Senior Notes [Member] | 2.50% Senior Notes due March 2017 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	0	299,992
Senior Notes [Member] | 5.75% Senior Notes due March 2018 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	249,864	249,771
Senior Notes [Member] | 7.50% Senior Notes due March 2019 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	201,695	201,695
Senior Notes [Member] | 4.90% Senior Notes due August 2020 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	167,600	167,576
Senior Notes [Member] | 4.625% Senior Notes due March 2021 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	208,552	208,538
Senior Notes [Member] | 3.95% Senior Notes due March 2022 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	125,503	125,488
Senior Notes [Member] | 7.75% Senior Notes due January 2024 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	981,187	980,117
Senior Notes [Member] | 7.70% Senior Notes due April 2025 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	448,958	448,909
Senior Notes [Member] | 6.20% Senior Notes due August 2040 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	399,899	399,898
Senior Notes [Member] | 6.05% Senior Notes due March 2041 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	397,779	397,758
Senior Notes [Member] | 5.25% Senior Notes due March 2042 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	498,384	498,369
Senior Notes [Member] | 8.70% Senior Notes due April 2045 [Member]
Debt Instrument [Line Items]
Senior unsecured notes	$ 394,636	$ 394,613

Debt - Schedule of Debt (Supple

Debt - Schedule of Debt (Supplemental) (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
2.50% Senior Notes due March 2017 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes			2.50%
5.75% Senior Notes due March 2018 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	5.75%
Senior notes, maturity date	2,018
7.50% Senior Notes due March 2019 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.50%
Senior notes, maturity date	2,019
4.90% Senior Notes due August 2020 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.90%
Senior notes, maturity date	2,020
4.625% Senior Notes due March 2021 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.625%			4.625%
Senior notes, maturity date	2,021
3.95% Senior Notes due March 2022 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.95%
Senior notes, maturity date	2,022
7.75% Senior Notes due January 2024 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.75%
Senior notes, maturity date	2,024
7.70% Senior Notes due April 2025 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.70%
Senior notes, maturity date	2,025
6.20% Senior Notes due August 2040 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.20%
Senior notes, maturity date	2,040
6.05% Senior Notes due March 2041 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.05%
Senior notes, maturity date	2,041
5.25% Senior Notes due March 2042 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	5.25%
Senior notes, maturity date	2,042
8.70% Senior Notes due April 2045 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	8.70%
Senior notes, maturity date	2,045
Senior Notes [Member] | 2.50% Senior Notes due March 2017 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		2.50%
Senior notes, maturity date		2,017
Senior Notes [Member] | 5.75% Senior Notes due March 2018 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	5.75%
Senior notes, maturity date	2,018
Senior Notes [Member] | 7.50% Senior Notes due March 2019 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.50%
Senior notes, maturity date	2,019
Senior Notes [Member] | 4.90% Senior Notes due August 2020 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.90%	4.90%		4.90%
Senior notes, maturity date	2,020
Senior Notes [Member] | 4.625% Senior Notes due March 2021 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.625%	4.625%
Senior notes, maturity date	2,021
Senior Notes [Member] | 3.95% Senior Notes due March 2022 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.95%	3.95%
Senior notes, maturity date	2,022
Senior Notes [Member] | 7.75% Senior Notes due January 2024 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.75%
Senior notes, maturity date	2,024
Senior Notes [Member] | 7.70% Senior Notes due April 2025 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.70%
Senior notes, maturity date	2,025
Senior Notes [Member] | 6.20% Senior Notes due August 2040 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.20%
Senior notes, maturity date	2,040
Senior Notes [Member] | 6.05% Senior Notes due March 2041 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.05%
Senior notes, maturity date	2,041
Senior Notes [Member] | 5.25% Senior Notes due March 2042 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	5.25%
Senior notes, maturity date	2,042
Senior Notes [Member] | 8.70% Senior Notes due April 2045 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	8.70%
Senior notes, maturity date	2,045

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)	1 Months Ended			3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2018	Dec. 31, 2016	Apr. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Mar. 31, 2017	Dec. 28, 2016	Apr. 01, 2016	Mar. 31, 2016
Debt Instrument [Line Items]
Gain on extinguishment of debt, net			$ 11,066,000	$ 0	$ 11,066,000	$ 0	$ 11,066,000
Maximum debt to tangible capitalization covenant				60.00%		60.00%
Line of credit facility debt to tangible capitalization ratio				40.00%		40.00%
4.90% Senior Notes due August 2020 [Member]
Debt Instrument [Line Items]
Face value of senior notes				$ 168,000,000		$ 168,000,000						$ 500,000,000
Interest rate on senior notes				4.90%		4.90%
Senior notes, maturity date						2,020
4.625% Senior Notes due March 2021 [Member]
Debt Instrument [Line Items]
Face value of senior notes				$ 209,000,000		$ 209,000,000						$ 400,000,000
Interest rate on senior notes				4.625%		4.625%						4.625%
Senior notes, maturity date						2,021
4.90% Senior Notes and 4.625% Senior Notes due in August 2020 and March 2021 [Member]
Debt Instrument [Line Items]
Face value of senior notes											$ 36,000,000
Purchase of senior notes											$ 24,000,000
2.50% Senior Notes due March 2017 [Member]
Debt Instrument [Line Items]
Face value of senior notes									$ 300,000,000
Interest rate on senior notes									2.50%
5.75% Senior Notes due March 2018 [Member]
Debt Instrument [Line Items]
Face value of senior notes				$ 250,000,000		$ 250,000,000
Interest rate on senior notes				5.75%		5.75%
Senior notes, maturity date						2,018
5.75% Senior Notes due March 2018 [Member] | Forecast [Member]
Debt Instrument [Line Items]
Debt to be repaid with cash on hand	$ 250,000,000
3.95% Senior Notes due March 2022 [Member]
Debt Instrument [Line Items]
Face value of senior notes				$ 126,000,000		$ 126,000,000
Interest rate on senior notes				3.95%		3.95%
Senior notes, maturity date						2,022
Maximum [Member] | Senior Unsecured Note [Member]
Debt Instrument [Line Items]
Interest rate increase (decrease)						0.25%
Senior Notes [Member] | Senior Unsecured Note [Member]
Debt Instrument [Line Items]
Long-term debt, principal amount		$ 1,000,000,000						$ 1,000,000,000
Senior Notes [Member] | 4.90% Senior Notes due August 2020 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		4.90%		4.90%		4.90%		4.90%				4.90%
Senior notes, maturity date						2,020
Long-term debt, principal amount		$ 467,800,000						$ 467,800,000
Senior Notes [Member] | 4.625% Senior Notes due March 2021 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		4.625%		4.625%		4.625%		4.625%
Senior notes, maturity date						2,021
Long-term debt, principal amount		$ 396,600,000						$ 396,600,000
Senior Notes [Member] | 2.50% Senior Notes due March 2017 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		2.50%						2.50%
Senior notes, maturity date								2,017
Senior Notes [Member] | 5.75% Senior Notes due March 2018 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes				5.75%		5.75%
Senior notes, maturity date						2,018
Senior Notes [Member] | 3.95% Senior Notes due March 2022 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		3.95%		3.95%		3.95%		3.95%
Senior notes, maturity date						2,022
Long-term debt, principal amount		$ 400,000,000						$ 400,000,000
Senior Notes [Member] | Multiple senior notes
Debt Instrument [Line Items]
Purchase of senior notes										$ 762,300,000
Repurchase amount										$ 750,000,000
Gain on extinguishment of debt, net								6,700,000
Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Senior unsecured revolving credit facility maturity period						5 years
Maximum borrowing capacity under credit facilities				$ 2,400,000,000		$ 2,400,000,000
Unsecured Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage						10.00%
Unsecured Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage						35.00%
Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under credit facilities				$ 500,000,000		$ 500,000,000
NHIL [Member]
Debt Instrument [Line Items]
Gain on extinguishment of debt, net					$ 11,066,000		$ 11,066,000
NHIL [Member] | Senior Unsecured Note [Member]
Debt Instrument [Line Items]
Face value of senior notes		$ 1,000,000,000						$ 1,000,000,000
Interest rate on senior notes		7.75%						7.75%
Approximate net proceeds from senior notes issuance		$ 967,600,000

Debt - Estimated Fair Value of

Debt - Estimated Fair Value of Our Long-Term Debt, not Including Effect of Unamortized Debt Issuance Costs (Detail) - Senior Notes [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	$ 3,077,851	$ 3,812,077
Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	4,074,057	4,372,724
2.50% Senior Notes due March 2017 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	0	299,128
2.50% Senior Notes due March 2017 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	0	299,992
5.75% Senior Notes due March 2018 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	250,682	249,808
5.75% Senior Notes due March 2018 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	249,864	249,771
7.50% Senior Notes due March 2019 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	204,378	209,524
7.50% Senior Notes due March 2019 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	201,695	201,695
4.90% Senior Notes due August 2020 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	153,912	167,329
4.90% Senior Notes due August 2020 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	167,600	167,576
4.625% Senior Notes due March 2021 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	171,182	196,416
4.625% Senior Notes due March 2021 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	208,552	208,538
3.95% Senior Notes due March 2022 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	99,223	112,791
3.95% Senior Notes due March 2022 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	125,503	125,488
7.75% Senior Notes due January 2024 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	793,560	945,317
7.75% Senior Notes due January 2024 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	981,187	980,117
7.70% Senior Notes due April 2025 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	348,899	423,267
7.70% Senior Notes due April 2025 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	448,958	448,909
6.20% Senior Notes due August 2040 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	244,636	280,221
6.20% Senior Notes due August 2040 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	399,899	399,898
6.05% Senior Notes due March 2041 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	236,908	273,854
6.05% Senior Notes due March 2041 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	397,779	397,758
5.25% Senior Notes due March 2042 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	281,715	325,814
5.25% Senior Notes due March 2042 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	498,384	498,369
8.70% Senior Notes due April 2045 [Member] | Estimated Fair Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	292,756	328,608
8.70% Senior Notes due April 2045 [Member] | Carrying Value [Member]
Debt Instrument [Line Items]
Senior unsecured notes, Estimated Fair Value	$ 394,636	$ 394,613

Debt - Estimated Fair Value o49

Debt - Estimated Fair Value of Our Long-Term Debt, not Including Effect of Unamortized Debt Issuance Costs (Supplemental) (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
2.50% Senior Notes due March 2017 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes			2.50%
5.75% Senior Notes due March 2018 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	5.75%
Senior notes, maturity date	2,018
7.50% Senior Notes due March 2019 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.50%
Senior notes, maturity date	2,019
4.90% Senior Notes due August 2020 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.90%
Senior notes, maturity date	2,020
4.625% Senior Notes due March 2021 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.625%			4.625%
Senior notes, maturity date	2,021
3.95% Senior Notes due March 2022 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.95%
Senior notes, maturity date	2,022
7.75% Senior Notes due January 2024 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.75%
Senior notes, maturity date	2,024
6.20% Senior Notes due August 2040 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.20%
Senior notes, maturity date	2,040
6.05% Senior Notes due March 2041 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.05%
Senior notes, maturity date	2,041
5.25% Senior Notes due March 2042 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	5.25%
Senior notes, maturity date	2,042
8.70% Senior Notes due April 2045 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	8.70%
Senior notes, maturity date	2,045
Senior Notes [Member] | 2.50% Senior Notes due March 2017 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		2.50%
Senior notes, maturity date		2,017
Senior Notes [Member] | 5.75% Senior Notes due March 2018 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	5.75%
Senior notes, maturity date	2,018
Senior Notes [Member] | 7.50% Senior Notes due March 2019 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.50%
Senior notes, maturity date	2,019
Senior Notes [Member] | 4.90% Senior Notes due August 2020 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.90%	4.90%		4.90%
Senior notes, maturity date	2,020
Senior Notes [Member] | 4.625% Senior Notes due March 2021 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.625%	4.625%
Senior notes, maturity date	2,021
Senior Notes [Member] | 3.95% Senior Notes due March 2022 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.95%	3.95%
Senior notes, maturity date	2,022
Senior Notes [Member] | 7.75% Senior Notes due January 2024 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.75%
Senior notes, maturity date	2,024
Senior Notes [Member] | 6.20% Senior Notes due August 2040 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.20%
Senior notes, maturity date	2,040
Senior Notes [Member] | 6.05% Senior Notes due March 2041 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.05%
Senior notes, maturity date	2,041
Senior Notes [Member] | 5.25% Senior Notes due March 2042 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	5.25%
Senior notes, maturity date	2,042
Senior Notes [Member] | 8.70% Senior Notes due April 2045 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	8.70%
Senior notes, maturity date	2,045

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Reserves for uncertain tax positions net	$ 190.3	$ 172.5
Related tax benefits	1	$ 1
Reduction in the provision for income taxes, if reserves not realized	$ 184.1
Operational period	12 months
Non-cash discrete item included in income tax provision from internal tax restructuring	$ 260.7
Deferral of income tax expense included in Other assets	$ 147.5

Employee Benefit Plans - Pensio

Employee Benefit Plans - Pension Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 799	$ 0	$ 1,574
Interest cost	492	641	970	1,275
Return on plan assets	(721)	(904)	(1,422)	(1,799)
Amortization of prior service cost	0	27	0	53
Recognized net actuarial loss	245	38	511	75
Net pension benefit cost (gain)	16	601	59	1,178
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	1,662	0	3,324
Interest cost	2,149	2,389	4,297	4,778
Return on plan assets	(2,941)	(3,097)	(5,882)	(6,194)
Amortization of prior service cost	0	29	0	58
Recognized net actuarial loss	366	1,100	732	2,200
Net pension benefit cost (gain)	$ (426)	$ 2,083	$ (853)	$ 4,166

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Employer contributions	$ 0	$ 0.2

Derivative Instruments and He53

Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2017USD ($)payment$ / bbl
Derivative [Line Items]
Number of contingent payments | payment		2
Percentage of forecasted local currency requirements of forward contract, remainder of 2016		70.00%
FCX settlement [Member]
Derivative [Line Items]
Derivative contingent settlement period		12 months
FCX settlement [Member] | Noble Corp [Member]
Derivative [Line Items]
Losses recognized related to contingent payments	$ (6.5)	$ (14.4)
Estimated fair value of contingent payments	0	$ 0
FCX settlement [Member] | WTI Crude Oil Averages Price More than $50 Per Barrel [Member]
Derivative [Line Items]
Crude oil average price | $ / bbl		50
Non designated derivatives contingent payment		$ 25
FCX settlement [Member] | WTI Crude Oil Averages Price More than $65 Per Barrel [Member]
Derivative [Line Items]
Crude oil average price | $ / bbl		65
Non designated derivatives contingent payment		$ 50
Forward Contracts [Member]
Derivative [Line Items]
Total unrealized loss related to forward contracts and recorded as part of "Accumulated other comprehensive loss"	0.7	0.7
Price Risk Derivative [Member]
Derivative [Line Items]
Notional amount of forward contracts outstanding	$ 20.6	$ 20.6

Derivative Instruments and He54

Derivative Instruments and Hedging Activities - Summarization of Financial Statement Presentation and Fair Value of Derivative Positions (Detail) - Prepaid Expenses and Other Current Assets [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Short-Term Foreign Currency Forward Contracts [Member]
Asset derivatives
Foreign currency forward contracts	$ 739
Not Designated as Hedging Instrument [Member] | FCX settlement [Member]
Asset derivatives
Non-designated derivatives FCX settlement	$ 0	$ 14,400

Derivative Instruments and He55

Derivative Instruments and Hedging Activities - Summarization of Recognized Gains and Losses of Cash Flow Hedges (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Foreign Currency Forward Contracts [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gain/(loss) recognized through AOCL	$ 849	$ (2,054)	$ 739	$ (1,068)
Gain/(loss) recognized through contract drilling services revenue			137	382
Foreign Currency Forward Contracts [Member] | Contract Drilling Services [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) reclassified from AOCL to contract drilling services expense	210	290
Not Designated as Hedging Instrument [Member] | Contract Drilling Services [Member] | FCX settlement [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gain/(loss) recognized through AOCL			0	0
Gain/(loss) recognized through contract drilling services revenue	$ (6,500)	$ 17,600	$ (14,400)	$ 17,600

Fair Value of Financial Instr56

Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value of Financial Instruments (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Quoted Prices in Active Markets (Level 1) [Member]
Assets -
Marketable securities	$ 7,077	$ 6,246
Significant Other Observable Inputs (Level 2) [Member]
Assets -
Foreign currency forward contracts	739
Significant Unobservable Inputs (Level 3) [Member]
Assets -
FCX Settlement		14,400
Carrying Amount [Member]
Assets -
Marketable securities	7,077	6,246
Foreign currency forward contracts	$ 739
FCX Settlement		$ 14,400

Fair Value of Financial Instr57

Fair Value of Financial Instruments Fair Value of Financial Instruments - Settlement Asset from FCX (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2017	Mar. 31, 2017
Business Combination, Contingent Consideration, Asset [Roll Forward]
Beginning balance	$ 6,500	$ 14,400
Fair value recognized in earnings	(6,500)	(7,900)
Ending balance	$ 0	$ 6,500

Accumulated Other Comprehensi58

Accumulated Other Comprehensive Income (Loss) - Changes in AOCL by Component (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			$ 6,467,445	$ 7,422,230
Other comprehensive income (loss), net	$ 1,318	$ (1,232)	1,786	1,305
Ending Balance	6,072,417	7,819,781	6,072,417	7,819,781
Gains / (Losses) on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			0	0
Other comprehensive income (loss) before reclassifications			739	(1,068)
Amounts reclassified from AOCL			0	0
Other comprehensive income (loss), net			739	(1,068)
Ending Balance	739	(1,068)	739	(1,068)
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(35,865)	(46,919)
Other comprehensive income (loss) before reclassifications			0	0
Amounts reclassified from AOCL			767	1,567
Other comprehensive income (loss), net			767	1,567
Ending Balance	(35,098)	(45,352)	(35,098)	(45,352)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(16,275)	(16,256)
Other comprehensive income (loss) before reclassifications			280	806
Amounts reclassified from AOCL			0	0
Other comprehensive income (loss), net			280	806
Ending Balance	(15,995)	(15,450)	(15,995)	(15,450)
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(52,140)	(63,175)
Other comprehensive income (loss) before reclassifications			1,019	(262)
Amounts reclassified from AOCL			767	1,567
Other comprehensive income (loss), net			1,786	1,305
Ending Balance	$ (50,354)	$ (61,870)	$ (50,354)	$ (61,870)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	1 Months Ended		3 Months Ended			6 Months Ended
	Jan. 31, 2017Rig	Dec. 31, 2014USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)$ / Occurrence_Per_Year	Jun. 30, 2016USD ($)	May 02, 2017USD ($)
Other Commitments [Line Items]
Number of newbuild rigs allegedly infringing patent | Rig	5
Net charges recognized relating to Paragon Offshore emergence from bankruptcy			$ 15,900,000			$ 15,900,000
Receivables disputed by customer and written off			15,900,000			14,419,000	$ 0
Net loss from discontinued operations, net of tax			$ (1,486,000)		$ 0	$ (1,486,000)	$ 0
Amount of withholding after spin-off				$ 23,900,000
Physical damage deductible per occurrence on rigs range maximum | $ / Occurrence_Per_Year						25,000,000
Number of days waiting period						45 days
Protection and indemnity policy, standard deductible (per occurrence)						$ 10,000,000
Maximum liability coverage under protection and indemnity policy						$ 750,000,000
Years of effectiveness of employment agreements after the termination of employment						3 years
Paragon Offshore [Member]
Other Commitments [Line Items]
Litigation trust fund								$ 10,000,000
Mexico [Member] | Noble-Cayman [Member] | Foreign tax authority [Member]
Other Commitments [Line Items]
Aforementioned tax assessments				45,500,000
Brazil [Member] | Noble-Cayman [Member] | Foreign tax authority [Member]
Other Commitments [Line Items]
Aforementioned tax assessments				$ 46,500,000
U.S. Gulf of Mexico [Member]
Other Commitments [Line Items]
Windstorm coverage amount						$ 500,000,000
Minimum [Member]
Other Commitments [Line Items]
Percentage of uncertain tax positions likelihood of being sustained						50.00%
Loss of hire coverage applies only to rigs operating under dayrate						$ 200,000
Customs And Other Business Taxes [Member] | Mexico [Member] | Foreign tax authority [Member]
Other Commitments [Line Items]
Income Tax Examination, Estimate of Possible Loss						$ 51,300,000
Noble Discoverer And Kulluk [Member]
Other Commitments [Line Items]
Loss contingencies payments		$ 8,200,000
Environmental Compliance Plan, probationary period		4 years
Possible early probation period		3 years
Noble Discoverer And Kulluk [Member] | Community Service Payment [Member]
Other Commitments [Line Items]
Loss contingencies payments		$ 4,000,000

Accounting Pronouncements - Add

Accounting Pronouncements - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing activities in Consolidated Statement of Cash Flows	$ (309,736)	$ (410,771)
Operating activities in Consolidated Statement of Cash Flows	$ 254,285	859,223
Accounting Standards Update 2016-09, Excess Tax Benefit Component [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing activities in Consolidated Statement of Cash Flows		(5,500)
Operating activities in Consolidated Statement of Cash Flows		5,500
Accounting Standards Update 2016-09, Statutory Tax Withholding Component [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing activities in Consolidated Statement of Cash Flows		3,000
Operating activities in Consolidated Statement of Cash Flows		$ (3,200)

Supplemental Financial Inform61

Supplemental Financial Information - Additional Information (Detail) $ in Millions	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Jun. 30, 2016Rig	Apr. 30, 2015Rig
Schedule Of Supplemental Financial Information [Line Items]
Deferred revenues under drilling contracts	$ 122.8	$ 134.4
Deferred expenses under drilling contracts	47.3	53.8
Aramco [Member]
Schedule Of Supplemental Financial Information [Line Items]
Number of rigs | Rig			4	5
Aramco [Member] | Prepaid Expenses and Other Current Assets or Other Assets [Member]
Schedule Of Supplemental Financial Information [Line Items]
Revenues recorded in excess of billings	$ 15.1	$ 17.9

Supplemental Financial Inform62

Supplemental Financial Information - Effect of Changes in Other Assets and Liabilities on Cash Flows from Operating Activities (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Capital [Line Items]
Net change in other assets and liabilities	$ 30,750	$ 164,319
Noble U-K [Member]
Operating Capital [Line Items]
Accounts receivable	76,495	147,454
Other current assets	15,896	75,949
Other assets	(40,078)	104,416
Accounts payable	(8,881)	(50,663)
Other current liabilities	(19,385)	(74,247)
Other liabilities	6,703	(38,590)
Net change in other assets and liabilities	30,750	164,319
Noble-Cayman [Member]
Operating Capital [Line Items]
Accounts receivable	76,495	147,454
Other current assets	12,475	73,543
Other assets	(47,166)	102,335
Accounts payable	(8,754)	(48,719)
Other current liabilities	(18,293)	(67,843)
Other liabilities	13,547	(39,933)
Net change in other assets and liabilities	$ 28,304	$ 166,837

Condensed Consolidating Finan63

Condensed Consolidating Financial Information - Guarantor Obligations (Detail)	6 Months Ended
	Jun. 30, 2017
5.75% Senior Notes due March 2018 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
7.50% Senior Notes due March 2019 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHUS
Guarantor	Noble-Cayman
7.50% Senior Notes due March 2019 [Member] | NDH [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	Noble Drilling Holding, LLC ("NDH")
Guarantor
7.50% Senior Notes due March 2019 [Member] | NDS6 [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	Noble Drilling Services 6 LLC ("NDS6")
Guarantor
4.90% Senior Notes due August 2020 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
4.625% Senior Notes due March 2021 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
3.95% Senior Notes due March 2022 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
7.75% Senior Notes due January 2024 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
7.70% Senior Notes due April 2025 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
6.20% Senior Notes due August 2040 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
6.05% Senior Notes due March 2041 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
5.25% Senior Notes due March 2042 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman
8.70% Senior Notes due April 2045 [Member] | Noble-Cayman [Member]
Guarantor Obligations [Line Items]
Issuer (Co-Issuer(s))	NHIL
Guarantor	Noble-Cayman

- Guarantor Obligations (Supple

- Guarantor Obligations (Supplemental) (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2017	Mar. 31, 2016
5.75% Senior Notes due March 2018 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 250,000,000
Interest rate on senior notes	5.75%
Senior notes, maturity date	2,018
7.50% Senior Notes due March 2019 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 202,000,000
Interest rate on senior notes	7.50%
Senior notes, maturity date	2,019
4.90% Senior Notes due August 2020 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 168,000,000	$ 500,000,000
Interest rate on senior notes	4.90%
Senior notes, maturity date	2,020
4.625% Senior Notes due March 2021 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 209,000,000	$ 400,000,000
Interest rate on senior notes	4.625%	4.625%
Senior notes, maturity date	2,021
3.95% Senior Notes due March 2022 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 126,000,000
Interest rate on senior notes	3.95%
Senior notes, maturity date	2,022
7.75% Senior Notes due January 2024 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 1,000,000,000
Interest rate on senior notes	7.75%
Senior notes, maturity date	2,024
7.70% Senior Notes due April 2025 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 450,000,000
Interest rate on senior notes	7.70%
Senior notes, maturity date	2,025
6.20% Senior Notes due August 2040 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 400,000,000
Interest rate on senior notes	6.20%
Senior notes, maturity date	2,040
6.05% Senior Notes due March 2041 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 400,000,000
Interest rate on senior notes	6.05%
Senior notes, maturity date	2,041
5.25% Senior Notes due March 2042 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 500,000,000
Interest rate on senior notes	5.25%
Senior notes, maturity date	2,042
8.70% Senior Notes due April 2045 [Member]
Guarantor Obligations [Line Items]
Face value of senior notes	$ 400,000,000
Interest rate on senior notes	8.70%
Senior notes, maturity date	2,045

- Condensed Consolidating Balan

- Condensed Consolidating Balance Sheet (Unaudited) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 602,977	$ 725,722	$ 822,978	$ 512,245
Accounts receivable	242,657	319,152
Taxes receivable	18,169	55,480
Prepaid expenses and other current assets	74,290	92,260
Total current assets	938,093	1,192,614
Property and equipment, at cost	12,410,857	12,364,888
Accumulated depreciation	(2,572,562)	(2,302,940)
Property and equipment, net	9,838,295	10,061,948
Other assets	248,709	185,555
Total assets	11,025,097	11,440,117
Current liabilities
Current maturities of long-term debt	249,475	299,882
Accounts payable	86,643	108,224
Accrued payroll and related costs	38,326	48,383
Taxes payable	89,738	46,561
Interest payable	99,662	61,299
Other current liabilities	84,610	68,944
Total current liabilities	648,454	633,293
Long-term debt	3,793,894	4,040,229
Deferred income taxes	212,526	2,084
Other liabilities	297,806	297,066
Total liabilities	4,952,680	4,972,672
Commitments and contingencies
Total shareholder equity	5,376,369	5,758,681
Noncontrolling interests	696,048	708,764
Total equity	6,072,417	6,467,445	7,819,781	7,422,230
Total liabilities and equity	11,025,097	11,440,117
Consolidating Adjustments [Member]
Current assets
Cash and cash equivalents	0	0	0	0
Accounts receivable	0	0
Taxes receivable	0	0
Short-term notes receivable from affiliates	(2,492,928)	(1,646,234)
Accounts receivable from affiliates	(7,104,795)	(3,690,281)
Prepaid expenses and other current assets	0	0
Total current assets	(9,597,723)	(5,336,515)
Property and equipment, at cost	0	0
Accumulated depreciation	0	0
Property and equipment, net	0	0
Notes receivable from affiliates	(9,345,634)	(5,290,556)
Investments in affiliates	(32,700,770)	(20,766,555)
Other assets	0	0
Total assets	(51,644,127)	(31,393,626)
Current liabilities
Short-term notes payables from affiliates	(2,492,928)	(1,646,234)
Current maturities of long-term debt	0	0
Accounts payable	0	0
Accrued payroll and related costs	0	0
Accounts payable to affiliates	(7,104,795)	(3,690,281)
Taxes payable	0	0
Interest payable	0	0
Other current liabilities	0	0
Total current liabilities	(9,597,723)	(5,336,515)
Long-term debt	0	0
Notes payable to affiliates	(9,345,634)	(5,290,556)
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	(18,943,357)	(10,627,071)
Commitments and contingencies
Total shareholder equity	(32,297,739)	(20,362,710)
Noncontrolling interests	(403,031)	(403,845)
Total equity	(32,700,770)	(20,766,555)
Total liabilities and equity	(51,644,127)	(31,393,626)
Noble-Cayman [Member]
Current assets
Cash and cash equivalents	14	2,537	228	1,627
Accounts receivable	0	0
Taxes receivable	0	0
Short-term notes receivable from affiliates	0	0
Accounts receivable from affiliates	619,661	361,313
Prepaid expenses and other current assets	96	270
Total current assets	619,771	364,120
Property and equipment, at cost	0	0
Accumulated depreciation	0	0
Property and equipment, net	0	0
Notes receivable from affiliates	3,177,248	3,304,672
Investments in affiliates	5,029,983	2,848,855
Other assets	3,462	4,292
Total assets	8,830,464	6,521,939
Current liabilities
Short-term notes payables from affiliates	0	0
Current maturities of long-term debt	0	0
Accounts payable	0	0
Accrued payroll and related costs	0	0
Accounts payable to affiliates	3,434,157	818,737
Taxes payable	0	0
Interest payable	24	48
Other current liabilities	16	12
Total current liabilities	3,434,197	818,797
Long-term debt	0	0
Notes payable to affiliates	0	0
Deferred income taxes	0	0
Other liabilities	19,929	19,929
Total liabilities	3,454,126	838,726
Commitments and contingencies
Total shareholder equity	5,376,338	5,683,213
Noncontrolling interests	0	0
Total equity	5,376,338	5,683,213
Total liabilities and equity	8,830,464	6,521,939
NHUS [Member]
Current assets
Cash and cash equivalents	0	0	0	0
Accounts receivable	0	0
Taxes receivable	0	21,428
Short-term notes receivable from affiliates	0	0
Accounts receivable from affiliates	92,349	0
Prepaid expenses and other current assets	0	0
Total current assets	92,349	21,428
Property and equipment, at cost	0	0
Accumulated depreciation	0	0
Property and equipment, net	0	0
Notes receivable from affiliates	0	0
Investments in affiliates	3,179,576	2,007,016
Other assets	16,775	0
Total assets	3,288,700	2,028,444
Current liabilities
Short-term notes payables from affiliates	1,605,243	171,925
Current maturities of long-term debt	0	0
Accounts payable	0	0
Accrued payroll and related costs	0	0
Accounts payable to affiliates	456,573	111,801
Taxes payable	41,361	0
Interest payable	0	0
Other current liabilities	0	0
Total current liabilities	2,103,177	283,726
Long-term debt	0	0
Notes payable to affiliates	700,000	700,000
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	2,803,177	983,726
Commitments and contingencies
Total shareholder equity	485,523	1,044,718
Noncontrolling interests	0	0
Total equity	485,523	1,044,718
Total liabilities and equity	3,288,700	2,028,444
NDH [Member]
Current assets
Cash and cash equivalents	119	10,855	176	2,101
Accounts receivable	31,008	33,162
Taxes receivable	0	0
Short-term notes receivable from affiliates	119,476	243,915
Accounts receivable from affiliates	149,005	137,476
Prepaid expenses and other current assets	1,040	1,611
Total current assets	300,648	427,019
Property and equipment, at cost	1,070,746	2,376,862
Accumulated depreciation	(246,631)	(428,308)
Property and equipment, net	824,115	1,948,554
Notes receivable from affiliates	1,053,783	112,706
Investments in affiliates	4,698,262	1,411,874
Other assets	6,419	5,687
Total assets	6,883,227	3,905,840
Current liabilities
Short-term notes payables from affiliates	0	0
Current maturities of long-term debt	0	0
Accounts payable	2,856	4,228
Accrued payroll and related costs	4,848	4,882
Accounts payable to affiliates	1,857,871	1,995,788
Taxes payable	0	0
Interest payable	0	0
Other current liabilities	945	4,296
Total current liabilities	1,866,520	2,009,194
Long-term debt	0	0
Notes payable to affiliates	470,643	467,139
Deferred income taxes	0	534
Other liabilities	11,010	24,035
Total liabilities	2,348,173	2,500,902
Commitments and contingencies
Total shareholder equity	4,535,054	1,404,938
Noncontrolling interests	0	0
Total equity	4,535,054	1,404,938
Total liabilities and equity	6,883,227	3,905,840
NHIL [Member]
Current assets
Cash and cash equivalents	367	0	0	0
Accounts receivable	0	0
Taxes receivable	0	0
Short-term notes receivable from affiliates	0	0
Accounts receivable from affiliates	60,944	67,560
Prepaid expenses and other current assets	49	0
Total current assets	61,360	67,560
Property and equipment, at cost	0	0
Accumulated depreciation	0	0
Property and equipment, net	0	0
Notes receivable from affiliates	0	69,564
Investments in affiliates	12,517,083	8,369,728
Other assets	0	0
Total assets	12,578,443	8,506,852
Current liabilities
Short-term notes payables from affiliates	0	0
Current maturities of long-term debt	249,475	299,882
Accounts payable	0	0
Accrued payroll and related costs	0	0
Accounts payable to affiliates	404,332	123,642
Taxes payable	0	0
Interest payable	95,184	56,839
Other current liabilities	0	0
Total current liabilities	748,991	480,363
Long-term debt	3,592,411	3,838,807
Notes payable to affiliates	3,175,662	744,181
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	7,517,064	5,063,351
Commitments and contingencies
Total shareholder equity	5,061,379	3,443,501
Noncontrolling interests	0	0
Total equity	5,061,379	3,443,501
Total liabilities and equity	12,578,443	8,506,852
NDS6 [Member]
Current assets
Cash and cash equivalents	0	0	0	0
Accounts receivable	0	0
Taxes receivable	0	0
Short-term notes receivable from affiliates	2,373,452	1,349,708
Accounts receivable from affiliates	357,957	85,274
Prepaid expenses and other current assets	1	0
Total current assets	2,731,410	1,434,982
Property and equipment, at cost	0	0
Accumulated depreciation	0	0
Property and equipment, net	0	0
Notes receivable from affiliates	3,943,299	5,000
Investments in affiliates	7,275,866	6,129,082
Other assets	0	0
Total assets	13,950,575	7,569,064
Current liabilities
Short-term notes payables from affiliates	0	0
Current maturities of long-term debt	0	0
Accounts payable	0	0
Accrued payroll and related costs	0	0
Accounts payable to affiliates	0	0
Taxes payable	0	0
Interest payable	4,454	4,412
Other current liabilities	0	0
Total current liabilities	4,454	4,412
Long-term debt	201,483	201,422
Notes payable to affiliates	0	0
Deferred income taxes	0	0
Other liabilities	0	0
Total liabilities	205,937	205,834
Commitments and contingencies
Total shareholder equity	13,744,638	7,363,230
Noncontrolling interests	0	0
Total equity	13,744,638	7,363,230
Total liabilities and equity	13,950,575	7,569,064
Other Non-guarantor Subsidiaries of Noble [Member]
Current assets
Cash and cash equivalents	601,678	640,441	822,573	508,067
Accounts receivable	211,649	285,990
Taxes receivable	18,169	34,052
Short-term notes receivable from affiliates	0	52,611
Accounts receivable from affiliates	5,824,879	3,038,658
Prepaid expenses and other current assets	73,014	86,868
Total current assets	6,729,389	4,138,620
Property and equipment, at cost	11,340,111	9,988,026
Accumulated depreciation	(2,325,931)	(1,874,632)
Property and equipment, net	9,014,180	8,113,394
Notes receivable from affiliates	1,171,304	1,798,614
Investments in affiliates	0	0
Other assets	222,138	168,573
Total assets	17,137,011	14,219,201
Current liabilities
Short-term notes payables from affiliates	887,685	1,474,309
Current maturities of long-term debt	0	0
Accounts payable	83,558	103,640
Accrued payroll and related costs	33,492	43,437
Accounts payable to affiliates	951,862	640,313
Taxes payable	47,951	46,561
Interest payable	0	0
Other current liabilities	83,517	63,004
Total current liabilities	2,088,065	2,371,264
Long-term debt	0	0
Notes payable to affiliates	4,999,329	3,379,236
Deferred income taxes	212,526	1,550
Other liabilities	266,867	248,219
Total liabilities	7,566,787	6,000,269
Commitments and contingencies
Total shareholder equity	8,471,145	7,106,323
Noncontrolling interests	1,099,079	1,112,609
Total equity	9,570,224	8,218,932
Total liabilities and equity	17,137,011	14,219,201
Noble Corp [Member]
Current assets
Cash and cash equivalents	602,178	653,833	822,977	511,795
Accounts receivable	242,657	319,152
Taxes receivable	18,169	55,480
Short-term notes receivable from affiliates	0	0
Accounts receivable from affiliates	0	0
Prepaid expenses and other current assets	74,200	88,749
Total current assets	937,204	1,117,214
Property and equipment, at cost	12,410,857	12,364,888
Accumulated depreciation	(2,572,562)	(2,302,940)
Property and equipment, net	9,838,295	10,061,948
Notes receivable from affiliates	0	0
Investments in affiliates	0	0
Other assets	248,794	178,552
Total assets	11,024,293	11,357,714
Current liabilities
Short-term notes payables from affiliates	0	0
Current maturities of long-term debt	249,475	299,882
Accounts payable	86,414	107,868
Accrued payroll and related costs	38,340	48,319
Accounts payable to affiliates	0	0
Taxes payable	89,312	46,561
Interest payable	99,662	61,299
Other current liabilities	84,478	67,312
Total current liabilities	647,681	631,241
Long-term debt	3,793,894	4,040,229
Notes payable to affiliates	0	0
Deferred income taxes	212,526	2,084
Other liabilities	297,806	292,183
Total liabilities	4,951,907	4,965,737
Commitments and contingencies
Total shareholder equity	5,376,338	5,683,213
Noncontrolling interests	696,048	708,764
Total equity	6,072,386	6,391,977	$ 7,816,075	$ 7,414,471
Total liabilities and equity	$ 11,024,293	$ 11,357,714

- Condensed Consolidating State

- Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) (Unaudited) (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating revenues
Contract drilling services		$ 271,532	$ 876,697	$ 626,191	$ 1,468,064
Reimbursables		6,599	17,933	14,903	38,539
Other		11	153	24	153
Total operating revenues		278,142	894,783	641,118	1,506,756
Operating costs and expenses
Contract drilling services		162,371	244,176	322,756	495,424
Reimbursables		4,394	14,298	9,540	30,304
Depreciation and amortization		136,594	150,946	272,312	300,665
General and administrative		18,658	19,033	34,538	38,573
Loss on impairment		0	16,616	0	16,616
Total operating costs and expenses		322,017	445,069	639,146	881,582
Operating income (loss)		(43,875)	449,714	1,972	625,174
Other income (expense)
Interest income (expense), net of amounts capitalized		(73,209)	(57,306)	(146,656)	(114,406)
Gain on extinguishment of debt, net	$ 11,066	0	11,066	0	11,066
Interest income and other, net		2,664	(1,253)	3,897	(1,983)
Income (loss) from continuing operations before income taxes		(114,420)	402,221	(140,787)	519,851
Income tax benefit (provision)		18,213	(56,822)	(239,194)	(50,319)
Net income (loss) from continuing operations		(96,207)	345,399	(379,981)	469,532
Net income (loss) from discontinuing operations, net of tax		(1,486)	0	(1,486)	0
Net income (loss)		(97,693)	345,399	(381,467)	469,532
Net income attributable to noncontrolling interests		4,343	(22,533)	(13,577)	(41,181)
Net income (loss) attributable to the company		(93,350)	322,866	(395,044)	428,351
Other comprehensive income, net		1,318	(1,232)	1,786	1,305
Comprehensive income (loss) attributable to the company		(92,032)	321,634	(393,258)	429,656
Consolidating Adjustments [Member]
Operating revenues
Contract drilling services		(9,944)	(27,126)	(27,113)	(45,440)
Reimbursables		0	0	0	0
Other		0	0	0	0
Total operating revenues		(9,944)	(27,126)	(27,113)	(45,440)
Operating costs and expenses
Contract drilling services		(9,944)	(27,126)	(27,113)	(45,440)
Reimbursables		0	0	0	0
Depreciation and amortization		0	0	0	0
General and administrative		0	0	0	0
Loss on impairment			0		0
Total operating costs and expenses		(9,944)	(27,126)	(27,113)	(45,440)
Operating income (loss)		0	0	0	0
Other income (expense)
Income (loss) of unconsolidated affiliates		91,391	(1,103,582)	550,253	(1,592,671)
Income (loss) of unconsolidated affiliates - discontinued operations, net of tax		(7,533)		(7,533)
Interest income (expense), net of amounts capitalized		73,679	131,182	190,572	165,796
Gain on extinguishment of debt, net			0		0
Interest income and other, net		(73,679)	(131,182)	(190,572)	(165,796)
Income (loss) from continuing operations before income taxes		83,858	(1,103,582)	542,720	(1,592,671)
Income tax benefit (provision)		0	0	0	0
Net income (loss) from continuing operations		83,858		542,720
Net income (loss) from discontinuing operations, net of tax		0		0
Net income (loss)		83,858	(1,103,582)	542,720	(1,592,671)
Net income attributable to noncontrolling interests		(478)	19,698	(816)	23,866
Net income (loss) attributable to the company		83,380	(1,083,884)	541,904	(1,568,805)
Other comprehensive income, net		(1,318)	1,232	(1,786)	(1,305)
Comprehensive income (loss) attributable to the company		82,062	(1,082,652)	540,118	(1,570,110)
Noble-Cayman [Member]
Operating revenues
Contract drilling services		0	0	0	0
Reimbursables		0	0	0	0
Other		0	0	0	0
Total operating revenues		0	0	0	0
Operating costs and expenses
Contract drilling services		(866)	972	135	2,717
Reimbursables		0	0	0	0
Depreciation and amortization		0	0	0	0
General and administrative		(442)	306	71	725
Loss on impairment			0		0
Total operating costs and expenses		(1,308)	1,278	206	3,442
Operating income (loss)		1,308	(1,278)	(206)	(3,442)
Other income (expense)
Income (loss) of unconsolidated affiliates		(85,274)	245,695	(380,376)	380,787
Income (loss) of unconsolidated affiliates - discontinued operations, net of tax		2,967		2,967
Interest income (expense), net of amounts capitalized		(2,578)	(5,228)	(5,183)	(22,784)
Gain on extinguishment of debt, net			0		0
Interest income and other, net		2,646	91,659	7,278	93,308
Income (loss) from continuing operations before income taxes		(80,931)	330,848	(375,520)	447,869
Income tax benefit (provision)		0	0	0	0
Net income (loss) from continuing operations		(80,931)		(375,520)
Net income (loss) from discontinuing operations, net of tax		0		0
Net income (loss)		(80,931)	330,848	(375,520)	447,869
Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to the company		(80,931)	330,848	(375,520)	447,869
Other comprehensive income, net		1,318	(1,232)	1,786	1,305
Comprehensive income (loss) attributable to the company		(79,613)	329,616	(373,734)	449,174
NHUS [Member]
Operating revenues
Contract drilling services		0	0	0	0
Reimbursables		0	0	0	0
Other		0	0	0	0
Total operating revenues		0	0	0	0
Operating costs and expenses
Contract drilling services		3,362	4,318	5,933	11,713
Reimbursables		0	0	0	0
Depreciation and amortization		0	0	0	0
General and administrative		1,538	2,340	2,845	5,655
Loss on impairment			0		0
Total operating costs and expenses		4,900	6,658	8,778	17,368
Operating income (loss)		(4,900)	(6,658)	(8,778)	(17,368)
Other income (expense)
Income (loss) of unconsolidated affiliates		(99,354)	(13,250)	(412,919)	40,605
Income (loss) of unconsolidated affiliates - discontinued operations, net of tax		4,566		4,566
Interest income (expense), net of amounts capitalized		(6,345)	(21,339)	(23,856)	(22,666)
Gain on extinguishment of debt, net			0		0
Interest income and other, net		(26)	54	(91)	50
Income (loss) from continuing operations before income taxes		(106,059)	(41,193)	(441,078)	621
Income tax benefit (provision)		66,127	(23,656)	116,586	(33,738)
Net income (loss) from continuing operations		(39,932)		(324,492)
Net income (loss) from discontinuing operations, net of tax		(1,598)		(1,598)
Net income (loss)		(41,530)	(64,849)	(326,090)	(33,117)
Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to the company		(41,530)	(64,849)	(326,090)	(33,117)
Other comprehensive income, net		0	0	0	0
Comprehensive income (loss) attributable to the company		(41,530)	(64,849)	(326,090)	(33,117)
NDH [Member]
Operating revenues
Contract drilling services		39,988	64,839	87,092	117,046
Reimbursables		892	2,622	2,028	3,368
Other		0	0	0	0
Total operating revenues		40,880	67,461	89,120	120,414
Operating costs and expenses
Contract drilling services		12,687	11,960	24,186	26,518
Reimbursables		472	2,345	1,292	2,887
Depreciation and amortization		14,005	22,309	30,520	43,770
General and administrative		0	0	0	0
Loss on impairment			0		0
Total operating costs and expenses		27,164	36,614	55,998	73,175
Operating income (loss)		13,716	30,847	33,122	47,239
Other income (expense)
Income (loss) of unconsolidated affiliates		39,114	(44,699)	41,483	(58,282)
Income (loss) of unconsolidated affiliates - discontinued operations, net of tax		0		0
Interest income (expense), net of amounts capitalized		(3,291)	(2,816)	(6,383)	(5,564)
Gain on extinguishment of debt, net			0		0
Interest income and other, net		14,309	3,427	54,211	6,903
Income (loss) from continuing operations before income taxes		63,848	(13,241)	122,433	(9,704)
Income tax benefit (provision)		(835)	(173)	(326)	(378)
Net income (loss) from continuing operations		63,013		122,107
Net income (loss) from discontinuing operations, net of tax		0		0
Net income (loss)		63,013	(13,414)	122,107	(10,082)
Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to the company		63,013	(13,414)	122,107	(10,082)
Other comprehensive income, net		0	0	0	0
Comprehensive income (loss) attributable to the company		63,013	(13,414)	122,107	(10,082)
NHIL [Member]
Operating revenues
Contract drilling services		0	0	0	0
Reimbursables		0	0	0	0
Other		0	0	0	0
Total operating revenues		0	0	0	0
Operating costs and expenses
Contract drilling services		(10,834)	19,290	1,653	51,604
Reimbursables		0	0	0	0
Depreciation and amortization		0	0	0	0
General and administrative		(5,941)	10,920	892	25,465
Loss on impairment			0		0
Total operating costs and expenses		(16,775)	30,210	2,545	77,069
Operating income (loss)		16,775	(30,210)	(2,545)	(77,069)
Other income (expense)
Income (loss) of unconsolidated affiliates		48,476	454,402	145,293	630,756
Income (loss) of unconsolidated affiliates - discontinued operations, net of tax		0		0
Interest income (expense), net of amounts capitalized		(107,686)	(59,812)	(213,688)	(121,221)
Gain on extinguishment of debt, net			11,066		11,066
Interest income and other, net		720	4,039	4,923	19,360
Income (loss) from continuing operations before income taxes		(41,715)	379,485	(66,017)	462,892
Income tax benefit (provision)		0	0	0	0
Net income (loss) from continuing operations		(41,715)		(66,017)
Net income (loss) from discontinuing operations, net of tax		0		0
Net income (loss)		(41,715)	379,485	(66,017)	462,892
Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to the company		(41,715)	379,485	(66,017)	462,892
Other comprehensive income, net		0	0	0	0
Comprehensive income (loss) attributable to the company		(41,715)	379,485	(66,017)	462,892
NDS6 [Member]
Operating revenues
Contract drilling services		0	0	0	0
Reimbursables		0	0	0	0
Other		0	0	0	0
Total operating revenues		0	0	0	0
Operating costs and expenses
Contract drilling services		0	0	0	0
Reimbursables		0	0	0	0
Depreciation and amortization		0	0	0	0
General and administrative		5	1	9	1
Loss on impairment			0		0
Total operating costs and expenses		5	1	9	1
Operating income (loss)		(5)	(1)	(9)	(1)
Other income (expense)
Income (loss) of unconsolidated affiliates		5,647	461,434	56,266	598,805
Income (loss) of unconsolidated affiliates - discontinued operations, net of tax		0		0
Interest income (expense), net of amounts capitalized		(3,854)	(4,189)	(7,671)	(8,464)
Gain on extinguishment of debt, net			0		0
Interest income and other, net		53,560	693	116,978	762
Income (loss) from continuing operations before income taxes		55,348	457,937	165,564	591,102
Income tax benefit (provision)		0	0	0	0
Net income (loss) from continuing operations		55,348		165,564
Net income (loss) from discontinuing operations, net of tax		0		0
Net income (loss)		55,348	457,937	165,564	591,102
Net income attributable to noncontrolling interests		0	0	0	0
Net income (loss) attributable to the company		55,348	457,937	165,564	591,102
Other comprehensive income, net		0	0	0	0
Comprehensive income (loss) attributable to the company		55,348	457,937	165,564	591,102
Other Non-guarantor Subsidiaries of Noble [Member]
Operating revenues
Contract drilling services		241,488	838,984	566,212	1,396,458
Reimbursables		5,707	15,311	12,875	35,171
Other		11	253	24	853
Total operating revenues		247,206	854,548	579,111	1,432,482
Operating costs and expenses
Contract drilling services		167,452	232,820	317,079	444,412
Reimbursables		3,922	11,953	8,248	27,417
Depreciation and amortization		120,628	128,629	239,831	256,841
General and administrative		18,071	286	18,478	(7,388)
Loss on impairment			16,616		16,616
Total operating costs and expenses		310,073	390,304	583,636	737,898
Operating income (loss)		(62,867)	464,244	(4,525)	694,584
Other income (expense)
Income (loss) of unconsolidated affiliates		0	0	0	0
Income (loss) of unconsolidated affiliates - discontinued operations, net of tax		0		0
Interest income (expense), net of amounts capitalized		(23,134)	(95,104)	(80,447)	(99,503)
Gain on extinguishment of debt, net			0		0
Interest income and other, net		5,198	30,107	11,120	43,477
Income (loss) from continuing operations before income taxes		(80,803)	399,247	(73,852)	638,558
Income tax benefit (provision)		(47,079)	(32,291)	(355,420)	(15,501)
Net income (loss) from continuing operations		(127,882)		(429,272)
Net income (loss) from discontinuing operations, net of tax		4,565		4,565
Net income (loss)		(123,317)	366,956	(424,707)	623,057
Net income attributable to noncontrolling interests		4,821	(42,231)	(12,761)	(65,047)
Net income (loss) attributable to the company		(118,496)	324,725	(437,468)	558,010
Other comprehensive income, net		1,318	(1,232)	1,786	1,305
Comprehensive income (loss) attributable to the company		(117,178)	323,493	(435,682)	559,315
Noble Corp [Member]
Operating revenues
Contract drilling services		271,532	876,697	626,191	1,468,064
Reimbursables		6,599	17,933	14,903	38,539
Other		11	253	24	853
Total operating revenues		278,142	894,883	641,118	1,507,456
Operating costs and expenses
Contract drilling services		161,857	242,234	321,873	491,524
Reimbursables		4,394	14,298	9,540	30,304
Depreciation and amortization		134,633	150,938	270,351	300,611
General and administrative		13,231	13,853	22,295	24,458
Loss on impairment		0	16,616	0	16,616
Total operating costs and expenses		314,115	437,939	624,059	863,513
Operating income (loss)		(35,973)	456,944	17,059	643,943
Other income (expense)
Income (loss) of unconsolidated affiliates		0	0	0	0
Income (loss) of unconsolidated affiliates - discontinued operations, net of tax		0		0
Interest income (expense), net of amounts capitalized		(73,209)	(57,306)	(146,656)	(114,406)
Gain on extinguishment of debt, net		0	11,066	0	11,066
Interest income and other, net		2,728	(1,203)	3,847	(1,936)
Income (loss) from continuing operations before income taxes		(106,454)	409,501	(125,750)	538,667
Income tax benefit (provision)		18,213	(56,120)	(239,160)	(49,617)
Net income (loss) from continuing operations		(88,241)	353,381	(364,910)	489,050
Net income (loss) from discontinuing operations, net of tax		2,967	0	2,967	0
Net income (loss)		(85,274)	353,381	(361,943)	489,050
Net income attributable to noncontrolling interests		4,343	(22,533)	(13,577)	(41,181)
Net income (loss) attributable to the company		(80,931)	330,848	(375,520)	447,869
Other comprehensive income, net		1,318	(1,232)	1,786	1,305
Comprehensive income (loss) attributable to the company		$ (79,613)	$ 329,616	$ (373,734)	$ 449,174

- Condensed Consolidating Sta67

- Condensed Consolidating Statement of Cash Flows (Unaudited) (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net cash provided by operating activities	$ 254,285	$ 859,223
Cash flows from investing activities
Proceeds from disposal of assets	314	21,190
Net cash used in investing activities	(67,294)	(137,719)
Cash flows from financing activities
Repayment of long-term debt	(300,000)	(322,207)
Debt issuance costs on senior notes and credit facility	(42)	0
Premiums paid on early repayment of long-term debt	0	(1,781)
Dividends paid to noncontrolling interests	(5,393)	(41,088)
Net cash used in financing activities	(309,736)	(410,771)
Net increase (decrease) in cash and cash equivalents	(122,745)	310,733
Cash and cash equivalents, beginning of period	725,722	512,245
Cash and cash equivalents, end of period	602,977	822,978
Consolidating Adjustments [Member]
Cash flows from operating activities
Net cash provided by operating activities	0	0
Cash flows from investing activities
Capital expenditures	0	0
Proceeds from disposal of assets	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities
Repayment of long-term debt	0	0
Debt issuance costs on senior notes and credit facility	0
Premiums paid on early repayment of long-term debt		0
Dividends paid to noncontrolling interests	0	0
Contributions (distributions) from (to) parent company, net	0
Contributions (distributions) from (to) parent company, net		0
Advances (to) from affiliates	0	0
Net cash used in financing activities	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
Noble-Cayman [Member]
Cash flows from operating activities
Net cash provided by operating activities	18,027	87,431
Cash flows from investing activities
Capital expenditures	0	0
Proceeds from disposal of assets	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities
Repayment of long-term debt	0	0
Debt issuance costs on senior notes and credit facility	0
Premiums paid on early repayment of long-term debt		0
Dividends paid to noncontrolling interests	0	0
Contributions (distributions) from (to) parent company, net	51,705
Contributions (distributions) from (to) parent company, net		(65,316)
Advances (to) from affiliates	(72,255)	(23,514)
Net cash used in financing activities	(20,550)	(88,830)
Net increase (decrease) in cash and cash equivalents	(2,523)	(1,399)
Cash and cash equivalents, beginning of period	2,537	1,627
Cash and cash equivalents, end of period	14	228
NHUS [Member]
Cash flows from operating activities
Net cash provided by operating activities	128,277	(72,611)
Cash flows from investing activities
Capital expenditures	0	0
Proceeds from disposal of assets	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities
Repayment of long-term debt	0	0
Debt issuance costs on senior notes and credit facility	0
Premiums paid on early repayment of long-term debt		0
Dividends paid to noncontrolling interests	0	0
Contributions (distributions) from (to) parent company, net	0
Contributions (distributions) from (to) parent company, net		0
Advances (to) from affiliates	(128,277)	72,611
Net cash used in financing activities	(128,277)	72,611
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
NDH [Member]
Cash flows from operating activities
Net cash provided by operating activities	94,821	66,135
Cash flows from investing activities
Capital expenditures	(1,309)	(44,139)
Proceeds from disposal of assets	7	0
Net cash used in investing activities	(1,302)	(44,139)
Cash flows from financing activities
Repayment of long-term debt	0	0
Debt issuance costs on senior notes and credit facility	0
Premiums paid on early repayment of long-term debt		0
Dividends paid to noncontrolling interests	0	0
Contributions (distributions) from (to) parent company, net	0
Contributions (distributions) from (to) parent company, net		0
Advances (to) from affiliates	(104,255)	(23,921)
Net cash used in financing activities	(104,255)	(23,921)
Net increase (decrease) in cash and cash equivalents	(10,736)	(1,925)
Cash and cash equivalents, beginning of period	10,855	2,101
Cash and cash equivalents, end of period	119	176
NHIL [Member]
Cash flows from operating activities
Net cash provided by operating activities	(173,014)	(179,793)
Cash flows from investing activities
Capital expenditures	0	0
Proceeds from disposal of assets	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities
Repayment of long-term debt	(300,000)	(322,207)
Debt issuance costs on senior notes and credit facility	(42)
Premiums paid on early repayment of long-term debt		(1,781)
Dividends paid to noncontrolling interests	0	0
Contributions (distributions) from (to) parent company, net	0
Contributions (distributions) from (to) parent company, net		0
Advances (to) from affiliates	473,423	503,781
Net cash used in financing activities	173,381	179,793
Net increase (decrease) in cash and cash equivalents	367	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	367	0
NDS6 [Member]
Cash flows from operating activities
Net cash provided by operating activities	109,339	(7,703)
Cash flows from investing activities
Capital expenditures	0	0
Proceeds from disposal of assets	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities
Repayment of long-term debt	0	0
Debt issuance costs on senior notes and credit facility	0
Premiums paid on early repayment of long-term debt		0
Dividends paid to noncontrolling interests	0	0
Contributions (distributions) from (to) parent company, net	0
Contributions (distributions) from (to) parent company, net		0
Advances (to) from affiliates	(109,339)	7,703
Net cash used in financing activities	(109,339)	7,703
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
Other Non-guarantor Subsidiaries of Noble [Member]
Cash flows from operating activities
Net cash provided by operating activities	91,919	985,834
Cash flows from investing activities
Capital expenditures	(66,299)	(114,770)
Proceeds from disposal of assets	307	21,190
Net cash used in investing activities	(65,992)	(93,580)
Cash flows from financing activities
Repayment of long-term debt	0	0
Debt issuance costs on senior notes and credit facility	0
Premiums paid on early repayment of long-term debt		0
Dividends paid to noncontrolling interests	(5,393)	(41,088)
Contributions (distributions) from (to) parent company, net	0
Contributions (distributions) from (to) parent company, net		0
Advances (to) from affiliates	(59,297)	(536,660)
Net cash used in financing activities	(64,690)	(577,748)
Net increase (decrease) in cash and cash equivalents	(38,763)	314,506
Cash and cash equivalents, beginning of period	640,441	508,067
Cash and cash equivalents, end of period	601,678	822,573
Noble Corp [Member]
Cash flows from operating activities
Net cash provided by operating activities	269,369	879,293
Cash flows from investing activities
Capital expenditures	(67,608)	(158,909)
Proceeds from disposal of assets	314	21,190
Net cash used in investing activities	(67,294)	(137,719)
Cash flows from financing activities
Repayment of long-term debt	(300,000)	(322,207)
Debt issuance costs on senior notes and credit facility	(42)	0
Premiums paid on early repayment of long-term debt	0	(1,781)
Dividends paid to noncontrolling interests	(5,393)	(41,088)
Contributions (distributions) from (to) parent company, net	51,705
Contributions (distributions) from (to) parent company, net		(65,316)
Advances (to) from affiliates	0	0
Net cash used in financing activities	(253,730)	(430,392)
Net increase (decrease) in cash and cash equivalents	(51,655)	311,182
Cash and cash equivalents, beginning of period	653,833	511,795
Cash and cash equivalents, end of period	$ 602,178	$ 822,977