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Income Taxes - Components of Income from Operations Before Income Taxes and Related Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income from continuing operations before income taxes:
United States	$ 224,979	$ 42,491	$ 90,401
Foreign	222,646	85,486	69,067
Income from continuing operations before income taxes	447,625	127,977	159,468
Current taxes:
United States	77,023	17,693	15,813
State	6,149	2,359	2,927
Foreign	30,152	41,938	18,021
Current taxes, Total	113,324	61,990	36,761
Deferred taxes:
United States			(862)
State and Foreign	11,419	(15,218)	1,272
Deferred taxes, Total	(4,831)	(38,822)	410
Provision for income taxes	$ 108,493	$ 23,168	$ 37,171

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- Definition

The component of total income tax expense for the period comprised of the increase (decrease) in the entity's state, local and foreign deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws.

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Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

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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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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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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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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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