Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Currently payable
U.K.	$ 2.0	$ (0.2)	$ 0.7
International	5.4	2.3	2.9
Total current taxes	7.4	2.1	3.6
Deferred
U.K.	(1.1)	2.1	4.5
International	(0.9)	2.7	(0.5)
Total deferred taxes	(2.0)	4.8	4.0
Total provision for income taxes	$ 5.4	$ 6.9	$ 7.6

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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