Income Taxes (Details2) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation Abstract
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate		$ 118.8	$ 44.0	$ 22.7
Income Tax Reconciliation State And Local Income Taxes		7.7	5.5	(0.6)
Tax Law Changes		0	5.8	0
Income Tax Reconciliation Foreign Income Tax Rate Differential		(7.6)	(4.8)	(0.4)
Tax reserve adjustments		(1.7)	(6.2)	1.6
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance		1.2	1.6	5.7
Income Tax Reconciliation Prior Year Income Taxes		(0.7)	(1.9)	(3.0)
Manufacturing deduction		(3.3)	0	0
Income Tax Reconciliation Other Reconciling Items		1.9	3.0	0.9
Income tax provision (benefit), Total		116.3	47.0	26.9
Medicare Part D	$ 5.3		$ 5.3