Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Balances for Each Component of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 491,714	$ 666,901
Other comprehensive income (loss) before reclassifications	(134,547)	20,622
Amounts reclassified from accumulated other comprehensive income (loss)	(1,852)	670
Other Comprehensive (Loss) Income, Net of Tax	(136,399)	21,292
Ending balance	157,883	523,375
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(869,484)	(859,226)
Other Comprehensive (Loss) Income, Net of Tax	(136,399)	21,292
Ending balance	(1,005,883)	(837,934)
Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	11,041	11,411
Other comprehensive income (loss) before reclassifications	9,190	5,818
Amounts reclassified from accumulated other comprehensive income (loss)	(3,210)	(759)
Other Comprehensive (Loss) Income, Net of Tax	5,980	5,059
Ending balance	17,021	16,470
Available-for-Sale Security
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(8,260)	(6,547)
Other comprehensive income (loss) before reclassifications	195	1,877
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other Comprehensive (Loss) Income, Net of Tax	195	1,877
Ending balance	(8,065)	(4,670)
Employee Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(169,857)	(142,763)
Other comprehensive income (loss) before reclassifications	1,702	(1,206)
Amounts reclassified from accumulated other comprehensive income (loss)	1,358	1,429
Other Comprehensive (Loss) Income, Net of Tax	3,060	223
Ending balance	(166,797)	(142,540)
Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(702,408)	(721,327)
Other comprehensive income (loss) before reclassifications	(145,634)	14,133
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other Comprehensive (Loss) Income, Net of Tax	(145,634)	14,133
Ending balance	$ (848,042)	$ (707,194)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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 of other comprehensive income (loss) attributable to parent entity.

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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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