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Commitments, Contingencies, And Guarantees (Balance Sheet Locations, Fair Values In Asset Or (Liability) Position, And Notional Values/Payment Provisions Of Derivative Instruments) (Detail) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Foreign currency forward contracts |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount |  | $ 4,973 | $ 6,182
Options/Futures contracts on notes, bonds, and equities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount |  | 5,782 | 12,944
Convertible securities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount | [1] | 22 | 12
Total investment and embedded derivative instruments |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 165 | 69
Fair Value, Liability |  | (163) | (166)
Derivative, Notional Amount |  | 10,777 | 19,138
Futures contracts on equities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount | [2] | 772 | 905
Other |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount |  | 304 | 3
Other Derivative Instruments [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Notional Amount |  | 1,076 | 908
Guaranteed Minimum Income Benefit [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Asset, Fair Value, Gross Asset | [3] | 0 | 0
Derivative, Notional Amount | [3] | 2,086 | 1,432
Other Assets [Member] | Foreign currency forward contracts |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 67 | 25
Other Assets [Member] | Options/Futures contracts on notes, bonds, and equities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 81 | 33
Other Assets [Member] | Futures contracts on equities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Asset, Fair Value, Gross Asset | [2] | 39 | 0
Other Assets [Member] | Other |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 21 | 0
Other Assets [Member] | Other Derivative Instruments [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 60 | 0
Fixed Maturities [Member] | Convertible securities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Asset, Fair Value, Gross Asset | [1] | 17 | 11
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Foreign currency forward contracts |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair Value, Liability |  | (153) | (139)
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Options/Futures contracts on notes, bonds, and equities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair Value, Liability |  | (10) | (27)
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Futures contracts on equities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair Value, Liability | [2] | 0 | (16)
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Other |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair Value, Liability |  | 0 | 0
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Other Derivative Instruments [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair Value, Liability |  | 0 | (16)
Accounts Payable, Accrued Expenses, And Other Liabilities [Member] | Guaranteed Minimum Income Benefit [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair Value, Liability | [3] | (832) | (745)
Equity Securities [Member] | Convertible securities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair Value, Liability | [1] | $ 0 | $ 0
[1] | Includes fair value of embedded derivatives.
[2] | Related to GMDB and GLB book of business.
[3] | Note that the payment provision related to GLB is the net amount at risk. The concept of a notional value does not apply to the GLB reinsurance contracts.

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