Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Trade receivable allowances
Valuation and Qualifying Accounts and Reserves
Balance at Beginning of Period	$ 4.9	$ 6.2	$ 4.5
Charged to Costs and Expenses	3.0	1.3	2.0
Deductions and Other	(2.4)	(2.6)	(0.3)
Balance at End of Period	5.5	4.9	6.2
Inventory obsolescence reserve
Valuation and Qualifying Accounts and Reserves
Balance at Beginning of Period	34.2	34.9	29.8
Charged to Costs and Expenses	13.1	5.3	7.5
Deductions and Other	(8.0)	(6.0)	(2.4)
Balance at End of Period	39.3	34.2	34.9
Tax valuation allowances
Valuation and Qualifying Accounts and Reserves
Balance at Beginning of Period	5.5	5.3	11.6
Charged to Costs and Expenses	1.0	0.2	(6.3)
Deductions and Other	0.0	0.0	0.0
Balance at End of Period	$ 6.5	$ 5.5	$ 5.3