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Derivatives - Derivative Balance Sheet Classification (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | $ 11,454 | $ 11,224
Fair Value | 86 | (42)
Asset Derivatives | 102 | 17
Liability Derivatives | (16) | (59)
Available-for-sale Securities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 539 | 413
Fair Value | 0 | 0
Asset Derivatives | 0 | 0
Liability Derivatives | 0 | 0
Other investments |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 942 | 1,452
Fair Value | 12 | 7
Asset Derivatives | 12 | 10
Liability Derivatives | 0 | (3)
Other liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 9,973 | 9,359
Fair Value | 74 | (49)
Asset Derivatives | 90 | 7
Liability Derivatives | (16) | (56)
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 8,760 | 8,447
Fair Value | (8) | (48)
Asset Derivatives | 7 | 6
Liability Derivatives | (15) | (54)
Interest rate swaps | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 2,155 | 2,340
Fair Value | 1 | 0
Asset Derivatives | 1 | 0
Liability Derivatives | 0 | 0
Interest rate swaps | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 6,600 | 7,200
Foreign currency swaps | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 539 | 437
Fair Value | 93 | 6
Asset Derivatives | 94 | 11
Liability Derivatives | (1) | (5)
Total cash flow hedges |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 2,694 | 2,777
Fair Value | 94 | 6
Asset Derivatives | 95 | 11
Liability Derivatives | (1) | (5)
Interest rate swaps and futures | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 8,002 | 7,567
Fair Value | (8) | (46)
Asset Derivatives | 3 | 3
Liability Derivatives | (11) | (49)
Foreign currency swaps and forwards | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 539 | 558
Fair Value | 0 | 0
Asset Derivatives | 0 | 0
Liability Derivatives | 0 | 0
Credit derivatives that purchase credit protection | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 11 | 112
Fair Value | 0 | (2)
Asset Derivatives | 0 | 0
Liability Derivatives | 0 | (2)
Credit derivatives in offsetting positions | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 208 | 210
Fair Value | 0 | 0
Asset Derivatives | 4 | 3
Liability Derivatives | $ (4) | $ (3)

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