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Derivative Instruments (Outstanding Derivative Instruments With Off-Balance-Sheet Risks) (Details) - USD ($) $ in Millions | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts |  | $ 108,855 |
Interest rate contracts [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [1] | 77,292 |
Foreign currency contracts [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [2] | 1,604 |
Equity market contracts [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts |  | 29,959 |
Credit contracts [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts |  |  |
Total Derivative Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts |  | 108,855 | $ 104,926
Asset Fair Value |  | 2,309 | 2,005
Liability Fair Value |  | 2,324 | 3,194
Derivative investments [Member] | Interest rate contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [3] | 72,319 | 70,290
Asset Fair Value | [3] | 752 | 985
Liability Fair Value | [3] | 142 | 701
Derivative investments [Member] | Foreign currency contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [3] | 25 | 14
Derivative investments [Member] | Equity market contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [3] | 29,959 | 28,315
Asset Fair Value | [3] | 534 | 541
Liability Fair Value | [3] | 471 | 616
Derivative investments [Member] | Credit contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [3] |  | 66
Derivative investments [Member] | Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts |  | 5,103 | 4,729
Asset Fair Value |  | 136 | 221
Liability Fair Value |  | 143 | 132
Derivative investments [Member] | Cash Flow Hedges [Member] | Interest rate contracts [Member] | Designated as Hedging Instrument [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [3] | 3,524 | 3,552
Asset Fair Value | [3] | 37 | 68
Liability Fair Value | [3] | 97 | 122
Derivative investments [Member] | Cash Flow Hedges [Member] | Foreign currency contracts [Member] | Designated as Hedging Instrument [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [3] | 1,579 | 1,177
Asset Fair Value | [3] | 99 | 153
Liability Fair Value | [3] | 46 | 10
Derivative investments [Member] | Fair Value Hedges [Member] | Interest rate contracts [Member] | Designated as Hedging Instrument [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Notional Amounts | [3] | 1,449 | 1,512
Asset Fair Value | [3] | 261 | 258
Liability Fair Value | [3] | 180 | 182
Other assets [Member] | Embedded derivatives - GLB [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Asset Fair Value | [4],[5] | 570 |
Liability Fair Value | [4],[5] |  | 371
Other liabilities [Member] | Embedded derivatives - GLB [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Asset Fair Value | [4],[5] | 53 |
Liability Fair Value | [4],[5] | 7 |
Reinsurance related embedded derivatives [Member] | Embedded derivatives - Reinsurance related [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Liability Fair Value | [6] | 63 | 53
Future contract benefits [Member] | Indexed annuity and embedded derivatives [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] |  |  |
Outstanding derivative instruments with off-balance-sheet risks |  |  |
Asset Fair Value | [4],[7] | 3 |
Liability Fair Value | [4],[7] | $ 1,318 | $ 1,139
[1] | As of September 30, 2017, the latest maturity date for which we were hedging our exposure to the variability in future cash flows for these instruments was April 2067.
[2] | As of September 30, 2017, the latest maturity date for which we were hedging our exposure to the variability in future cash flows for these instruments was September 2049.
[3] | Reported in derivative investments and other liabilities on our Consolidated Balance Sheets.
[4] | Reported in other assets on our Consolidated Balance Sheets.
[5] | Reported in other liabilities on our Consolidated Balance Sheets.
[6] | Reported in reinsurance related embedded derivatives on our Consolidated Balance Sheets.
[7] | Reported in future contract benefits on our Consolidated Balance Sheets.

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