Operations and Summary of Significant Accounting Policies (Allowance For Credit Losses Roll forward) (Details) - Allowances for credit losses - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 31.3	$ 32.6	$ 36.4
Acquired Businesses	0.0	0.1	0.2
Charged (Credited) to Costs and Expenses	4.2	3.3	0.5
Write-offs	(4.6)	(3.2)	(2.8)
Foreign Currency Translation	1.0	(1.5)	(1.7)
Balance at End of Period	$ 31.9	$ 31.3	$ 32.6