Benefit Plans - Allocation of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	100.00%	100.00%
Fair value of plan assets	$ 29.4	$ 249.2
Pension plan assets in the fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	29.4	49.5
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.7	1.6
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	28.7	47.9
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Pension plan assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	199.7
Cash | Pension plan assets in the fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.7	1.6
Cash | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.7	1.6
Cash | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Cash | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0.0	$ 0.0
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	28.00%	12.00%
Equity securities | United States
Defined Benefit Plan Disclosure [Line Items]
Target allocation	27.00%
Equity securities | Pension plan assets in the fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 8.2	$ 21.2
Equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8.2	21.2
Equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0.0	$ 0.0
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	68.00%	86.00%
Debt securities | United States
Defined Benefit Plan Disclosure [Line Items]
Target allocation	68.00%
Other
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	4.00%	2.00%
Other | United States
Defined Benefit Plan Disclosure [Line Items]
Target allocation	5.00%
Mutual funds | Pension plan assets in the fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 20.4	$ 22.1
Mutual funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Mutual funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	20.4	22.1
Mutual funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Other mutual funds | Pension plan assets in the fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.1	4.6
Other mutual funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
Other mutual funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.1	4.6
Other mutual funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0.0	$ 0.0
Minimum | Equity securities | United States
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	25.00%
Minimum | Debt securities | United States
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	63.00%
Minimum | Other | United States
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	2.00%
Maximum | Equity securities | United States
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	30.00%
Maximum | Debt securities | United States
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	68.00%
Maximum | Other | United States
Defined Benefit Plan Disclosure [Line Items]
Weighted average asset allocations	7.00%