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Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plans
Total expenses		$ 13.6	$ 17.8	$ 18.4
Defined Benefit Plan
Defined benefit pension plan settlement charges	$ 109.8		109.8
Net Periodic Benefit Cost
Net periodic benefit cost			9.4	$ 4.4
Other Assets
Defined Benefit Plan
Restricted cash	18.4	14.6	18.4
Investments	$ 11.9	$ 7.4	$ 11.9

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