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Income Taxes (Summary Of The Tax Years By Jurisdiction That Remain Subject To Examination By Taxing Authorities) (Details)	12 Months Ended
	Dec. 31, 2022
Minimum [Member] \| United States Federal [Member]
Tax years open	2015
Maximum [Member] \| United States Federal [Member]
Tax years open	2022
Various U.S. States [Member] \| Minimum [Member]
Tax years open	2018
Various U.S. States [Member] \| Maximum [Member]
Tax years open	2022
Canada [Member] \| Minimum [Member]
Tax years open	2006
Canada [Member] \| Maximum [Member]
Tax years open	2022