Accrued Liabilities - Accrued Product Warranty Liability (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 40.4	$ 37.6	$ 41.1	$ 19.1
Product warranty accruals	5.4	3.0	9.8	7.6
Acquired warranty	0.0	0.0	0.1	19.8
Settlements	(4.1)	(2.5)	(8.9)	(7.9)
Charged to other accounts	0.3	0.6	(0.1)	0.1
Balance at end of period	$ 42.0	$ 38.7	$ 42.0	$ 38.7