Revenue - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Revenue Recognition [Line Items]
Revenue recognition, description of timing	As our production cycle is typically six months or less, it is expected that goods related to the revenue represented in that adjustment will be shipped and billed within the current year.
Contract assets recorded for revenue, unbilled	$ 50.5	$ 38.1
Reduction in inventory	(25.2)	$ 2.3	$ 10.8
Accounting Standards Update No. 2014-09
Revenue Recognition [Line Items]
Contract assets recorded for revenue, unbilled				$ 38.1
Offset recorded to opening balance of retained earnings, taxes	1.3
Increase in revenue	12.4
Increase in gross margin	0.3
Reduction in inventory	45.8
Accounting Standards Update No. 2014-09 | Retained Earnings
Revenue Recognition [Line Items]
Reduction in inventory associated with revenue recorded to retained earnings	$ 33.0