Accumulated Other Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent			$ 6,217,304
Net current period other comprehensive income (loss)	$ 146,742	$ (11,005)	(300,572)	$ 33,868
Stockholders' Equity Attributable to Parent	5,987,805		5,987,805
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent			(373,043)	(396,996)
OCI, before Reclassifications, Net of Tax, Attributable to Parent			(305,810)	28,363
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent			0	0
Net current period other comprehensive income (loss)			(305,810)	28,363
Stockholders' Equity Attributable to Parent	(678,853)	(368,633)	(678,853)	(368,633)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent			2,068	4,746
OCI, before Reclassifications, Net of Tax, Attributable to Parent			1,237	4,581
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent			2,891	4,263
Net current period other comprehensive income (loss)			(1,654)	318
Stockholders' Equity Attributable to Parent	414	5,064	414	5,064
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent			(345,919)	(309,977)
OCI, before Reclassifications, Net of Tax, Attributable to Parent			0	0
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent			(6,892)	(5,187)
Net current period other comprehensive income (loss)			6,892	5,187
Stockholders' Equity Attributable to Parent	(339,027)	(304,790)	(339,027)	(304,790)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent			(716,894)	(702,227)
OCI, before Reclassifications, Net of Tax, Attributable to Parent			(304,573)	32,944
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent			(4,001)	(924)
Net current period other comprehensive income (loss)			(300,572)	33,868
Stockholders' Equity Attributable to Parent	$ (1,017,466)	$ (668,359)	$ (1,017,466)	$ (668,359)

Accumulated Other Comprehensive Income (Loss) [Roll Forward]

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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