Revenue Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ (91.4)
Retained Earnings
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ (91.5)
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Performance Obligation, Warranty, Term	18 months
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Performance Obligation, Warranty, Term	36 months
Transferred over Time [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue Recognized, Percent	82.40%