Income Taxes Components of Provision for Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current Federal Tax Expense (Benefit)	$ (24.7)	$ 6.0	$ 6.0
Current State and Local Tax Expense (Benefit)	(0.2)	1.4	0.5
Current Foreign Tax Expense (Benefit)	9.9	5.5	17.3
Current Income Tax Expense (Benefit)	(15.0)	12.9	23.8
Deferred Federal Income Tax Expense (Benefit)	22.3	(6.0)	(64.7)
Deferred State and Local Income Tax Expense (Benefit)	(1.4)	0.5	(0.6)
Deferred Foreign Income Tax Expense (Benefit)	(4.9)	(3.1)	(2.3)
Deferred Income Tax Expense (Benefit)	16.0	(8.6)	(67.6)
Income Tax Expense (Benefit)	$ 1.0	$ 4.3	$ (43.8)