Retirement Plans (Level 3 Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	$ 346.2
Fair Value of Plan Assets at End of Period	367.7	$ 346.2
Level 3
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	20.9
Acquisition	4.3
Net Sales	(0.8)
Net Gains (Losses)	2.7
Translation	0.9
Fair Value of Plan Assets at End of Period	28.0	20.9
Level 3 | Other
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	0.0
Acquisition	4.3
Net Sales	0.0
Net Gains (Losses)	0.0
Translation	0.0
Fair Value of Plan Assets at End of Period	4.3	0.0
Level 3 | Insurance Contracts
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	20.9	34.0
Acquisition	0.0	0.0
Net Sales	(0.8)	(0.2)
Net Gains (Losses)	2.7	(10.7)
Translation	0.9	(2.2)
Fair Value of Plan Assets at End of Period	$ 23.7	$ 20.9