Goodwill And Other Intangible Assets (Schedule Of Finite Lived Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 81.6	$ 49.5
Accumulated Amortization	(16.7)	(12.4)
Total Net Carrying Amount	$ 64.9	$ 37.1
Weighted Average Life	14 years 10 months 24 days	14 years 6 months
Minimum
Finite-Lived Intangible Assets [Line Items]
Asset Life	3 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Asset Life	20 years
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 57.4	$ 30.5
Accumulated Amortization	(11.6)	(8.4)
Total Net Carrying Amount	$ 45.8	$ 22.1
Weighted Average Life	13 years 4 months 24 days	11 years 9 months 18 days
Customer Relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Asset Life	6 years	8 years
Customer Relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Asset Life	20 years	14 years
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 23.2	$ 18.2
Accumulated Amortization	(4.6)	(3.6)
Total Net Carrying Amount	$ 18.6	$ 14.6
Weighted Average Life	18 years 10 months 24 days	19 years 4 months 24 days
Trade Names | Minimum
Finite-Lived Intangible Assets [Line Items]
Asset Life	5 years	15 years
Trade Names | Maximum
Finite-Lived Intangible Assets [Line Items]
Asset Life	20 years	20 years
Noncompete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 0.9	$ 0.7
Accumulated Amortization	(0.4)	(0.3)
Total Net Carrying Amount	$ 0.5	$ 0.4
Weighted Average Life	5 years 6 months	5 years 7 months 6 days
Noncompete Agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Asset Life	3 years	3 years
Noncompete Agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Asset Life	7 years	7 years
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 0.1	$ 0.1
Accumulated Amortization	$ (0.1)	$ (0.1)
Asset Life	10 years
Weighted Average Life	10 years	10 years