CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated net income	$ 407,162	$ 524,723	$ 500,486
Other comprehensive income:
Foreign currency translation adjustment and other	248,510	(109,187)	(223,268)
Unrealized gain (loss) on investment securities, net	8,852	(2,439)	814
Unrealized gain (loss) on interest rate swaps designated as cash flow hedges, net	(2,359)	373	871
Employee benefit plan items, net	8,853	10,148	2,947
Other comprehensive income (loss)	263,856	(101,105)	(218,636)
Comprehensive income	671,018	423,618	281,850
Less: Comprehensive income attributable to noncontrolling interests	10,207	16	4,213
Comprehensive income attributable to shareholders	$ 660,811	$ 423,602	$ 277,637