Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income		$ 199,257,000	$ 152,771,000	$ 739,134,000	$ 305,825,000
Other comprehensive income (loss):
Unrecognized gain (loss) on equity investments		(3,086,000)	0	(18,186,000)	389,000
Unrecognized gain (loss) on cash flow hedges		462,000	455,000	(1,235,000)	1,327,000
Unrecognized gain (loss) on foreign currency translation		(25,198,000)	(42,664,000)	(22,011,000)	(39,444,000)
Total other comprehensive income (loss)		(27,822,000)	(42,209,000)	(41,432,000)	(37,728,000)
Total comprehensive income (loss), total		171,435,000	110,562,000	697,702,000	268,097,000
Total comprehensive income (loss) attributable to noncontrolling interests	[1]	(14,271,000)	(7,984,000)	(19,416,000)	(10,894,000)
Comprehensive income (loss) attributable to controlling interests		$ 185,706,000	$ 118,546,000	$ 717,118,000	$ 278,991,000

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