Affiliated Companies - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Nov. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Oct. 31, 2019
Schedule of Equity Method Investments [Line Items]
Purchase in investment in affiliated companies in cash	$ 85.1	$ 0.0	$ 85.1	$ 0.0
Purchase of investment in affiliated companies	$ 4.9		4.9
Unremitted income of affiliated companies		98.2	82.4	75.8
Dividends received from affiliated companies		1.6	2.2	1.7
Purchases and royalty payments made to affiliates		143.3	115.1	86.3
Amount due and payable to affiliates		33.6	20.8
Sales to affiliates		9.7	9.2	9.6
Amount receivable from affiliates		1.4	1.9
Equity method investments		201.9	179.3
Aggregate carrying amount of investment in affiliated companies that are not accounted for under the equity method		$ 12.8	13.4
Daikyo
Schedule of Equity Method Investments [Line Items]
Ownership interest	49.00%	49.00%			25.00%
Equity in unrealized gains (losses) in securities available-for-sale and derivative instruments		$ 0.6	$ 0.4	$ 0.4