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Derivatives - Fair Value Hedges - Non-qualifying Strategies (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 13 | $ (108) | $ 46
Foreign Exchange Forward [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | 0 | 5
Interest rate swaps and futures |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 8 | (3) | 25
Credit derivatives | Credit derivatives that purchase credit protection |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 0 | (105) | 4
Equity index options |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 5 | 0 | (2)
Commodity Option |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 0 | $ 0 | $ 14

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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