Financing Receivables (Schedule Of Lease Receivables, Net Of Nonrecourse Debt, Associated With Leveraged Lease Portfolio Based On Counterparty Credit Rating) (Detail) - Energy Holdings [Member] - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Guarantor Obligations [Line Items]
Lease Receivables, Net of Non-Recourse Debt	$ 223	$ 249
Counterparties' Credit Rating (S&P), AA [Member]
Guarantor Obligations [Line Items]
Lease Receivables, Net of Non-Recourse Debt	7
Standard & Poor's, A- Rating [Member]
Guarantor Obligations [Line Items]
Lease Receivables, Net of Non-Recourse Debt	43
Counterparties' Credit Rating (S&P), BBB plus, BBB, BBB minus [Member]
Guarantor Obligations [Line Items]
Lease Receivables, Net of Non-Recourse Debt	$ 173