Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Current Liabilities [Abstract]
Deferred income	$ 51.0	$ 27.5
Dividends payable	12.6	11.8	$ 11.3
Accrued commissions, rebates and royalties	10.0	9.7
Accrued retirement plans (excluding pension)	8.4	7.9
Accrued taxes other than income	15.4	6.5
Accrued professional services	3.7	5.9
Accrued interest	3.3	3.3
Restructuring and severance related charges	7.8	2.6
Short term derivative instruments	9.5	0.2
Other	21.9	15.9
Other current liabilities	$ 143.6	$ 91.3