CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Consolidated net income (loss)	$ 586,464	$ (200,168)	$ 721,574
Other comprehensive income (loss):
Foreign currency translation adjustment and other, net of taxes	185,952	19,948	(163,927)
Unrealized gain (loss) on foreign exchange contracts designated as net investment hedges, net of taxes	(13,488)	10,368	0
Unrealized gain (loss) on interest rate swaps designated as cash flow hedges, net of taxes	(9,000)	(7,787)	931
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	(2,864)	14,035	8,253
Other comprehensive income (loss)	160,600	36,564	(154,743)
Comprehensive income (loss)	747,064	(163,604)	566,831
Less: Comprehensive income attributable to noncontrolling interests	5,300	3,245	2,848
Comprehensive income (loss) attributable to shareholders	$ 741,764	$ (166,849)	$ 563,983