Affiliated Companies (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Nov. 01, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Carrying amount, equity-method investments	$ 186.2		$ 186.2		$ 179.3
Carrying amount, investments not accounted for under the equity method	13.4		13.4		13.4
Purchase of investment in affiliated companies in cash			85.1
Purchase of investment in affiliated companies			4.9
Purchases and royalty payments made to affiliates	27.9	$ 27.6	60.4	$ 52.2
Amount due and payable to affiliates	18.1		18.1		20.8
Sales to affiliates	2.8	$ 2.5	5.0	$ 4.7
Amount receivable from affiliates	$ 1.8		$ 1.8		$ 1.9
Daikyo Seiko, Ltd. (Daikyo)
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage						49.00%	25.00%