Income Taxes Components of Noncurrent Deferred Tax Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets, Net, Noncurrent	$ 366.1	$ 20.1
Deferred Tax Liabilities, Undistributed Foreign Earnings	(85.2)	(105.6)
Deferred Tax Liabilities, Property, Plant and Equipment	(9.5)	(9.7)
Deferred Tax Assets (Liabilities), Net, Noncurrent	356.6	12.4
Deferred Tax Assets, Noncurrent [Member]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	200.7	222.0
Deferred Tax Assets, Operating Loss Carryforwards	177.4	109.0
Deferred Tax Assets, Tax Credit Carryforwards	79.0	60.0
Other Tax Carryforward, Deferred Tax Asset	17.9	21.1
Deferred Tax Assets, Fixed Assets	9.0	0
Deferred Tax Assets, Deferred Income	20.0	30.1
Deferred Tax Assets, Noncurrent, Capitalized Expenditures	99.3	78.8
Deferred Tax Assets, Other	4.0	11.7
Deferred Tax Assets, Valuation Allowance, Noncurrent	(156.0)	(405.0)
Deferred Tax Assets, Net, Noncurrent	451.3	127.7
Deferred Tax Assets, Current [Member]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	16.9	15.3
Deferred Tax Assets, Other	$ 15.5	$ 11.8