Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 78.6	$ 54.2
Pension and retiree benefits accruals	46.4	34.2
Inventory	20.0	15.9
Depreciation and fixed assets	7.7	6.7
Tax credit carryforwards	6.5	6.9
Other liabilities	49.8	53.9
Valuation allowance	(77.8)	(40.0)
Total deferred tax assets	131.2	131.8
Convertible debt discount	147.7	131.2
Inventory	1.5	2.2
Depreciation and fixed assets	89.1	82.9
Intangibles	58.8	44.0
Other	6.3	18.6
Total deferred tax liabilities	303.4	278.9
Net deferred tax assets (liabilities)	$ (172.2)	$ (147.1)