Commitments and Contingencies (Liabilities for Estimated Product Warranty Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Total liabilities for estimated warranty
Accrued expenses	$ 30.8	$ 30.0
Other liabilities	71.8	71.1
Total warranty liability	102.6	$ 101.1
Minimum [Member]
Product Liability Contingency, Loss Exposure Not Accrued, Best Estimate	$ 0.9