Employee Retirement Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Defined Benefit Plan, Benefit Obligation, Payment for Settlement			$ 151.5
Defined Benefit Plan, Plan Assets, Administration Expense	$ 0.0	$ 1.2
Defined Benefit Plan, Funded (Unfunded) Status of Plan	$ 0.6