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Derivatives - Derivative Balance Sheet Classification (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | $ 23,449 | $ 10,755
Fair Value | (35) | 47
Asset Derivatives | 53 | 62
Liability Derivatives | (88) | (15)
Available-for-sale Securities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 568 | 569
Fair Value | 0 | 0
Asset Derivatives | 0 | 0
Liability Derivatives | 0 | 0
Other investments |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 17,174 | 9,108
Fair Value | 6 | 34
Asset Derivatives | 10 | 38
Liability Derivatives | (4) | (4)
Other liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 5,707 | 1,078
Fair Value | (41) | 13
Asset Derivatives | 43 | 24
Liability Derivatives | (84) | (11)
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 19,231 | 8,032
Fair Value | (73) | (6)
Asset Derivatives | 6 | 5
Liability Derivatives | (79) | (11)
Interest rate swaps [1] | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 3,650 | 2,155
Fair Value | 0 | 0
Asset Derivatives | 0 | 0
Liability Derivatives | 0 | 0
Interest rate swaps [1] | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 13,100 | 6,600
Foreign currency swaps | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 568 | 568
Fair Value | 38 | 53
Asset Derivatives | 47 | 57
Liability Derivatives | (9) | (4)
Total cash flow hedges |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 4,218 | 2,723
Fair Value | 38 | 53
Asset Derivatives | 47 | 57
Liability Derivatives | (9) | (4)
Interest rate swaps and futures [1] | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 14,045 | 7,245
Fair Value | (2) | (6)
Asset Derivatives | 3 | 2
Liability Derivatives | (5) | (8)
Foreign currency swaps and forwards | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 568 | 569
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 | 4,411 | 11
Fair Value | (71) | 0
Asset Derivatives | 0 | 0
Liability Derivatives | (71) | 0
Credit derivatives in offsetting positions | Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 207 | 207
Fair Value | 0 | 0
Asset Derivatives | 3 | 3
Liability Derivatives | $ (3) | $ (3)

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