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Derivatives - Derivative Balance Sheet Classification (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | $ 7,081 | $ 12,363
Fair Value | 45 | 7
Asset Derivatives | 88 | 57
Liability Derivatives | (43) | (50)
Securities available-for-sale and other |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 647 | 645
Fair Value | 0 | 0
Asset Derivatives | 0 | 0
Liability Derivatives | 0 | 0
Other investments |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 3,011 | 1,662
Fair Value | 57 | (1)
Asset Derivatives | 66 | 18
Liability Derivatives | (9) | (19)
Other liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 3,423 | 10,056
Fair Value | (12) | 8
Asset Derivatives | 22 | 39
Liability Derivatives | (34) | (31)
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 2,210 | 8,269
Fair Value | 4 | (5)
Asset Derivatives | 36 | 27
Liability Derivatives | (32) | (32)
Interest rate swaps | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 4,225 | 3,450
Fair Value | 0 | (1)
Asset Derivatives | 0 | 1
Liability Derivatives | 0 | (2)
Interest rate swaps | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 344 | 6,600
Foreign currency swaps | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 646 | 644
Fair Value | 41 | 13
Asset Derivatives | 52 | 29
Liability Derivatives | (11) | (16)
Cash Flow Hedging |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 4,871 | 4,094
Fair Value | 41 | 12
Asset Derivatives | 52 | 30
Liability Derivatives | (11) | (18)
Interest rate swaps and futures | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 344 | 6,626
Fair Value | 0 | (5)
Asset Derivatives | 1 | 0
Liability Derivatives | (1) | (5)
Foreign currency swaps and forwards | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 647 | 645
Fair Value | 0 | 0
Asset Derivatives | 0 | 0
Liability Derivatives | 0 | 0
Credit derivatives in offsetting positions | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 986 | 998
Fair Value | 0 | 0
Asset Derivatives | 31 | 27
Liability Derivatives | (31) | (27)
Equity index options | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 233 | 0
Fair Value | 4 | 0
Asset Derivatives | 4 | 0
Liability Derivatives | $ 0 | $ 0

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