Supplementary Financial Information (Schedule Of Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Supplementary Financial Information [Abstract]
Interest	$ 296	$ 285
Less capitalized interest	(12)	(10)
Interest payments (net of amounts capitalized)	284	275
Federal	76	48
State	24	23
Total payments in lieu of income taxes	100	71
Construction expenditures financed through accounts payable (investing)	201	197
ROU assets obtained in exchange for operating lease obligations	30	41
Transfer of title to assets constructed for and prepaid by LP&L		$ 150
Donation of property	$ 1

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Transfer Of Title To Assets Constructed For And Prepaid By LpL

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Future cash outflow to pay for construction in progress expenditures that have occurred.

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