Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Contribution Plans
Total expenses		$ 18.4	$ 20.0	$ 20.0
Defined Benefit Plan
Fair value of plan assets		280.6	237.1
Benefit obligation		$ 240.7	$ 248.5
Discount rate assumption		1.66%	2.66%
Prepaid pension costs		$ 39.9
Unfunded pension obligations			$ 11.4
Net Periodic Benefit Cost
Net periodic benefit cost		4.4	4.1	$ 3.3
Company contributions to the Plan		0.0	$ 0.0
Estimated future company contributions in 2021		0.0
Estimated Undiscounted Future Benefit Payments
Expected future benefit payments, 2021		25.9
Expected future benefit payments, 2022		24.2
Expected future benefit payments, 2023		22.5
Expected future benefit payments, 2024		20.9
Expected future benefit payments, 2025		19.3
Expected future benefit payments, 2026 through 2030		$ 73.9
Forecast
Net Periodic Benefit Cost
Expected long-term return on plan assets assumption	2.00%