Equity (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Reconciliation of equity attributable to non-controlling interests
Noncontrolling interests, beginning of period	$ 2,400,000	$ 79,100,000	$ 1,488,000	$ 52,900,000
Net income (loss) attributable to noncontrolling interests, net of tax	0	1,900,000	0	32,300,000
Currency translation adjustment	0	(800,000)	100,000	4,900,000
Deconsolidation of noncontrolling interest	0	0	(500,000)	0
Distributions to noncontrolling interests	0	(14,100,000)	1,300,000	(24,000,000)
Acquisition of noncontrolling interests	0	(61,700,000)	0	(61,700,000)
Noncontrolling interests, end of period	$ 2,388,000	$ 4,400,000	$ 2,388,000	$ 4,400,000