Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 87,854,000		$ 7,181,000		$ 153,054,000		$ 78,980,000
Other comprehensive income (loss):
Unrecognized gain (loss) on equity investments	(160,000)		(258,000)		389,000		(86,000)
Unrecognized gain (loss) on cash flow hedges	432,000		472,000		872,000		943,000
Unrecognized gain (loss) on foreign currency translation	13,109,000		(20,751,000)		3,220,000		(43,457,000)
Total other comprehensive income (loss)	13,381,000		(20,537,000)		4,481,000		(42,600,000)
Total comprehensive income (loss), total	101,235,000		(13,356,000)		157,535,000		36,380,000
Total comprehensive income (loss) attributable to noncontrolling interests	6,277,000	[1]	(5,367,000)	[1]	(2,910,000)	[1]	(5,228,000)	[1]
Comprehensive income (loss) attributable to controlling interests	$ 94,958,000		$ (7,989,000)		$ 160,445,000		$ 41,608,000

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