Commitments and Contingencies Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Movement in Standard Product Warranty Accrual [Roll Forward]
Accrued warranty liability, beginning of period	$ 65.0
Accruals for warranties issued during the period	17.6
Settlements made	(17.4)
Accrued warranty liability, end of period	$ 65.2
Minimum [Member]
Loss Contingencies [Line Items]
Warranty Period	90 days