Benefit Plans, Defined Benefit Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	$ 317.4	$ 285.4
U.S. Plans [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	251.4	226.4	$ 293.8
International Plans [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	66.0	59.0	$ 87.6
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	261.3	234.9
Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	49.0	42.9
Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	7.1	7.6
Equity Securities [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	162.9	155.0
US Equities [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	142.5	135.7
US Equities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	142.5	135.7
US Equities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.0	0.0
US Equities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.0	0.0
Non-US Equities [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	20.4	19.3
Non-US Equities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	20.4	19.3
Non-US Equities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.0	0.0
Non-US Equities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.0	0.0
Fixed Income Securities [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	112.0	91.9
Corporate Debt Instruments [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	112.0	91.9
Corporate Debt Instruments [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	98.0	79.6
Corporate Debt Instruments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	14.0	12.3
Corporate Debt Instruments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.0	0.0
Real Estate [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.8	0.8
Real Estate [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.0	0.0
Real Estate [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.0	0.0
Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.8	0.8
Other [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	41.7	37.7
Other [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	0.4	0.3
Other [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	35.0	30.6
Other [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value of Plan Assets [Abstract]
Fair value of plan assets	$ 6.3	$ 6.8