Acquisitions (Components Of Preliminary Identifiable Intangible Assets Acquired And Useful Lives) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Weighted Average Life	15 years 6 months	14 years 6 months
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Weighted Average Life	16 years 2 months 12 days
Fair value	$ 186.1
Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted Average Life	15 years 3 months 18 days	12 years 10 months 24 days
Customer Relationships [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Weighted Average Life	16 years 6 months
Fair value	$ 148.3
Trade Name [Member]
Business Acquisition [Line Items]
Weighted Average Life	16 years 10 months 24 days	18 years 10 months 24 days
Trade Name [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Weighted Average Life	15 years
Fair value	$ 36.6
Other Intangibles [Member]
Business Acquisition [Line Items]
Weighted Average Life	3 years 10 months 24 days	3 years 10 months 24 days
Non-Compete Agreement [Member]
Business Acquisition [Line Items]
Weighted Average Life	5 years 2 months 12 days	5 years 3 months 18 days
Non-Compete Agreement [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Weighted Average Life	5 years
Fair value	$ 1.2