Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 53.0	$ 41.3
Pension and retiree benefits accruals	34.2	25.3
Inventory	15.8	17.6
Depreciation and fixed assets	6.7	7.9
Tax credit carryforwards	6.9	9.3
Other liabilities	52.8	43.6
Valuation allowance	(37.1)	(36.1)
Total deferred tax assets	132.3	108.9
Convertible debt discount	131.2	116.6
Inventory	1.9	5.1
Depreciation and fixed assets	83.4	78.8
Intangibles	44.0	55.5
Other	18.8	11.3
Total deferred tax liabilities	279.3	267.3
Net deferred tax assets (liabilities)	$ (147.0)	$ (158.4)