CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net Loss	$ (210,741)	$ (176,296)
Other Comprehensive (Loss) Income, Net of Tax
Currency translation adjustments	(145,634)	14,133
Employee benefit plans adjustments	3,060	223
Net unrealized gains on available-for-sale security	195	1,877
Net unrealized gains on derivative instruments:
Unrealized holding gains	(134,547)	20,622
Amounts reclassified from accumulated other comprehensive loss	(1,852)	670
Net unrealized gains on derivative instruments	5,980	5,059
Other Comprehensive (Loss) Income, Net of Tax	(136,399)	21,292
Comprehensive Loss	$ (347,140)	$ (155,004)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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