Description of Business and Summary of Significant Accounting Policies (Depreciation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Property, Plant and Equipment [Line Items]
Depreciation	$ 302.0	$ 290.2	$ 273.3
Selling, General and Administrative Expense, Depreciation	24.1	23.0	19.6
Research and Development Expense, Depreciation	$ 4.3	$ 4.5	$ 5.6