Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net Income (Loss) Attributable to Parent	$ 685,912	$ 865,195
Foreign currency translation adjustments	(62,011)	(36,402)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent	731	359
Net unrealized holding gains (losses) on available-for-sale investments net of tax expense	(327)	2,036
Total other comprehensive income (loss) net of tax	(61,607)	(34,007)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 624,305	$ 831,188