Benefit Plans, Defined Benefit Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair value of plan assets [Abstract]
Fair value of plan assets	$ 381.3	$ 358.2
U.S. Plans [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	293.7	271.6	$ 261.5
International Plans [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	87.6	86.6	$ 78.5
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	303.5	280.7
Significant Other Observable Inputs (Level 2) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	71.8	69.2
Significant Unobservable Inputs (Level 3) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	6.0	8.3
Equity Securities [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	206.7	200.0
US Equities [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	182.7	182.0
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	182.7	182.0
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	24.0	18.0
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	24.0	18.0
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	116.5	99.7
Corporate Debt Instruments [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	116.5	99.7
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	96.4	80.4
Corporate Debt Instruments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	20.1	19.3
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	1.0	1.0
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	1.0	1.0
Other [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	57.1	57.5
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	51.7	49.9
Other [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of plan assets [Abstract]
Fair value of plan assets	$ 5.0	$ 7.3