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Debt (Recourse Debt Net Principal Amounts Due Over Five Years) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Debt Details [Line Items] |  |
Recourse Debt Total | $ 3,894 | $ 3,754
Debt Maturity Year One [Member] |  |
Debt Details [Line Items] |  |
Recourse Debt Total | 0 |
Debt Maturity Year Two [Member] |  |
Debt Details [Line Items] |  |
Recourse Debt Total | 200 |
Debt Maturity Year Three [Member] |  |
Debt Details [Line Items] |  |
Recourse Debt Total | 900 |
Debt Maturity Year Four [Member] |  |
Debt Details [Line Items] |  |
Recourse Debt Total | 800 |
Debt Maturity Year Five [Member] |  |
Debt Details [Line Items] |  |
Recourse Debt Total | 325 |
Thereafter |  |
Debt Details [Line Items] |  |
Recourse Debt Total | 1,700 |
Unamortized (discounts)/premiums & debt issuance (costs) |  |
Debt Details [Line Items] |  |
Recourse Debt Total | $ (31) | $ (36)

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- Definition Recourse debt is direct borrowings by the Parent Company that is structurally subordinate to the affiliates non-recourse debt. + References No definition available. + Details
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