Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income		$ 330,459,000	$ 87,854,000	$ 539,880,000	$ 153,054,000
Other comprehensive income (loss):
Unrecognized gain (loss) on equity investments		(3,413,000)	(160,000)	(15,100,000)	389,000
Unrecognized gain (loss) on cash flow hedges		462,000	432,000	(1,697,000)	872,000
Unrecognized gain (loss) on foreign currency translation		32,384,000	13,109,000	3,187,000	3,220,000
Total other comprehensive income (loss)		29,433,000	13,381,000	(13,610,000)	4,481,000
Total comprehensive income (loss), total		359,892,000	101,235,000	526,270,000	157,535,000
Total comprehensive income (loss) attributable to noncontrolling interests	[1]	5,140,000	6,277,000	(5,145,000)	(2,910,000)
Comprehensive income (loss) attributable to controlling interests		$ 354,752,000	$ 94,958,000	$ 531,415,000	$ 160,445,000

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