Employee Benefit Plans - Fair Value Measurement of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Allocation	100.00%	100.00%
Pension assets	$ 140.3	$ 131.7	$ 189.7
Cash/Money Markets
Defined Benefit Plan Disclosure [Line Items]
Allocation	2.00%	2.00%
Pension assets	$ 3.5	$ 3.0
Foreign Government/Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Allocation	7.00%	10.00%
Pension assets	$ 9.9	$ 13.4
Corporate Bonds, Debentures
Defined Benefit Plan Disclosure [Line Items]
Allocation	31.00%	26.00%
Pension assets	$ 43.2	$ 33.4
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Allocation	22.00%	23.00%
Pension assets	$ 31.3	$ 30.2
Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Allocation	9.00%	7.00%
Pension assets	$ 11.9	$ 9.3
Investment and Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Allocation	29.00%	32.00%
Pension assets	$ 40.5	$ 42.4
Level 1
Defined Benefit Plan Disclosure [Line Items]
Pension assets	13.4	16.4
Level 1 | Cash/Money Markets
Defined Benefit Plan Disclosure [Line Items]
Pension assets	3.5	3.0
Level 1 | Foreign Government/Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Pension assets	9.9	13.4
Level 1 | Corporate Bonds, Debentures
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 1 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 1 | Investment and Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 2
Defined Benefit Plan Disclosure [Line Items]
Pension assets	102.4	91.5
Level 2 | Cash/Money Markets
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 2 | Foreign Government/Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 2 | Corporate Bonds, Debentures
Defined Benefit Plan Disclosure [Line Items]
Pension assets	43.2	33.4
Level 2 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Pension assets	31.3	30.2
Level 2 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Pension assets	11.9	9.3
Level 2 | Investment and Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Pension assets	16.0	18.6
Level 3
Defined Benefit Plan Disclosure [Line Items]
Pension assets	24.5	23.8
Level 3 | Cash/Money Markets
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 3 | Foreign Government/Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 3 | Corporate Bonds, Debentures
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 3 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 3 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Pension assets	0.0	0.0
Level 3 | Investment and Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Pension assets	$ 24.5	$ 23.8	$ 50.6