Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016		Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 210,749	$ 330,459	$ 376,223		$ 539,880
Other comprehensive income (loss):
Unrecognized gain (loss) on equity investments	(3,611)	(3,413)	(11,160)		(15,100)
Unrecognized gain (loss) on cash flow hedges	487	462	970		(1,697)
Unrecognized actuarial gain/(loss)	0	0	2		0
Unrecognized gain (loss) on foreign currency translation	(50,384)	32,384	(49,012)		3,187
Total other comprehensive income (loss)	(53,508)	29,433	(59,200)		(13,610)
Total comprehensive income (loss), total	157,241	359,892	317,023		526,270
Total comprehensive income (loss) attributable to noncontrolling interests	(4,000)	5,140	11,271	[1]	(5,145)
Comprehensive income (loss) attributable to controlling interests	$ 161,241	$ 354,752	$ 305,752		$ 531,415

[1] (1) Includes amounts attributable to redeemable noncontrolling interests.