Post Employment Plans - Changes in Fair Value of Level 3 Pension Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of period	$ 189.1
Fair value of plan assets at end of period	181.7	$ 189.1
Level 3
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of period	64.2	56.1
Actual return on plan assets	1.9	1.9
Purchases, sales and settlements, net	1.1	1.2
Foreign exchange	(3.9)	5.0
Fair value of plan assets at end of period	$ 63.3	$ 64.2