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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
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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 |

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