Other Current and Non-Current Liabilities - Components of Other Current and Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Other current liabilities:
Accrued salaries, wages and related costs	$ 178.4	$ 209.2
Accrued operating expenses	189.7	192.1
Accrued customer volume rebates	93.7	83.3
Accrued interest	38.0	37.8
Accrued employee benefit liability	5.0	4.9
Total	504.8	527.3
Other non-current liabilities:
Accrued employee benefit liability	139.9	201.0
Other postretirement liability	35.3	38.3
Uncertain tax position liability	402.6	381.4
Other various liabilities	83.8	107.6
Total	$ 661.6	$ 728.3