CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated net income	$ 721,574	$ 407,376	$ 524,788
Foreign currency translation adjustment and other	(163,927)	248,317	(108,872)
Unrealized gain (loss) on investment securities, net of taxes	0	8,852	(2,439)
Unrealized gain (loss) on interest rate swaps designated as cash flow hedges, net of taxes	931	(2,359)	373
Employee benefit plan items, net of taxes	8,253	8,853	10,148
Other comprehensive income (loss)	(154,743)	263,663	(100,790)
Comprehensive income	566,831	671,039	423,998
Less: Comprehensive income attributable to noncontrolling interests	2,848	10,207	16
Comprehensive income attributable to shareholders	$ 563,983	$ 660,832	$ 423,982