Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 354,741	$ 199,257	$ 730,961	$ 739,134
Other comprehensive income (loss):
Unrecognized gain (loss) on equity investments	5,908	(3,086)	(5,252)	(18,186)
Unrecognized gain (loss) on cash flow hedges	401	462	1,371	(1,235)
Unrecognized actuarial gain/(loss)	(2)	0	0	0
Unrecognized gain (loss) on foreign currency translation	516	(25,198)	(48,496)	(22,011)
Total other comprehensive income (loss)	6,823	(27,822)	(52,377)	(41,432)
Total comprehensive income (loss), total	361,564	171,435	678,584	697,702
Total comprehensive income (loss) attributable to noncontrolling interests	1,846	(14,271)	13,117	(19,416)
Comprehensive income (loss) attributable to controlling interests	$ 359,718	$ 185,706	$ 665,467	$ 717,118