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Income Taxes Income Taxes - Effective Tax Rates Differing From Prevailing Federal Corporate Income Tax Rates (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Reconciliation of Effective Tax Rates [Line Items] |  |  |
Tax on income from continuing operations at statutory rate | $ 3 | $ 110 | $ 0
Tax on income from continuing operations at statutory rate,tax rate | 21.00% | 21.00% | 21.00%
Tax-exempt interest | $ 0 | $ (1) | $ (2)
Tax-exempt interest, tax rate | 0.00% | 0.00% | (114.00%)
Derivative, Gain (Loss) on Derivative, Net | $ (1) | $ 129 | $ 22
Valuation allowance | $ 2 | $ (131) | $ (4)
Valuation allowance, tax rate | 13.00% | (25.00%) | (230.00%)
Other, net | $ 4 | $ (4) | $ 1
Foreign taxes | $ 9 | $ 4 | $ 8
Foreign taxes, tax rate | 70.00% | 1.00% | 448.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | $ 0 | $ (1) | $ 14
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent | (1.00%) | 0.00% | 794.00%
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent | 118.00% | 0.00% | 0.00%
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount | $ 15 | $ 0 | $ 0
Other, net, tax rate | 35.00% | (1.00%) | 72.00%
Income tax expense (benefit) | $ 7 | $ 2 | $ 18
Effective Income Tax Rate Reconciliation, Percent | 60.00% | 1.00% | 991.00%
Effective Tax Rate Reconciliation, Variable Interest Entities | $ (24) | $ 25 |
Effective Tax Rate Reconciliation, Variable Interest Entities, Percent | (197.00%) | 5.00% |
Futures Contracts [Member] |  |  |
Reconciliation of Effective Tax Rates [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 0 | $ 62 | $ 9
Interest Rate Swaps [Member] |  |  |
Reconciliation of Effective Tax Rates [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | (1) | 65 | 13
Variable Interest Entity, Primary Beneficiary [Member] |  |  |
Reconciliation of Effective Tax Rates [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | (63) | 565 | (150)
Variable Interest Entity, Primary Beneficiary [Member] | Currency Swaps [Member] |  |  |
Reconciliation of Effective Tax Rates [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | (1) | 24 | 2
Variable Interest Entity, Primary Beneficiary [Member] | Interest Rate Swaps [Member] |  |  |
Reconciliation of Effective Tax Rates [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ (62) | $ 541 | $ (152)

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