Income Taxes (Components of Income Tax Expense (Benefit)) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current tax expense:
Federal	$ (8.6)	$ (32.7)	$ (0.3)
State	(0.4)	(2.1)	1.2
Foreign	42.8	60.4	87.4
Deferred tax expense (benefit):
Federal	19.3	24.1	(16.7)
State	1.7	0.3	(1.1)
Foreign	(12.3)	(2.8)	(37.8)
Income Tax Expense (Benefit)	$ 42.5	$ 47.2	$ 32.7