Income Taxes - Difference Between Actual Income Tax Expense and Tax Provision Computed by Applying Statutory Federal Income Tax Rate to Income Before Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income before income tax expense:
U.S.	$ (11,158)	$ 288,080	$ 537,635
Foreign	(370,190)	227,111	236,605
Worldwide	(381,348)	515,191	774,240
Expected income tax expense at federal statutory rate	(133,472)	180,317	270,984
Foreign earnings of foreign subsidiaries (not taxed at the statutory federal income tax rate) net of related foreign taxes	(5,518)	(46,163)	(102,359)
Foreign earnings of foreign subsidiaries for which U.S. federal income taxes have been provided	9	7,190	805
Foreign taxes of domestic and foreign subsidiaries for which U.S. federal income taxes have also been provided	27,193	38,358	45,428
Foreign tax credits	(26,590)	(39,843)	(46,524)
Interest capitalized by foreign subsidiaries	(5,708)	(16,492)	(18,391)
Impact of American Taxpayer Relief Act of 2012			(27,509)
Uncertain tax positions	1,169	(47,964)	66,085
Amortization of deferred charges associated with intercompany rig sales to other tax jurisdictions	38,466	44,301	30,894
Net expense (benefit) in connection with resolutions of tax issues and adjustments relating to prior years	(2,283)	7,775	4,804
Other	(329)	701	1,337
Income tax expense	$ (107,063)	$ 128,180	$ 225,554

No definition available.

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Foreign income tax expense of U.S. and non-U.S. subsidiaries of the entity for which U.S. federal income taxes are provided at the domestic federal statutory income tax rate.

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No definition available.

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Amount of amortization of previously recorded deferred tax related assets associated with the sale of drilling rigs between different tax jurisdictions.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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-Publisher FASB
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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit).

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies. Including, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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