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Investments and Derivative Instruments Level 4 Non-qualifying Strategies for Hedge Accounting (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
Non-qualifying Strategies for Hedge Accounting [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | $ 59,225 |  |  |  | $ 59,225 |  | $ 62,185
Derivative, Fair Value, Net |  | (984) |  |  |  | (984) |  | (926)
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (17) |  | $ (27) |  | (48) | $ (30) |
Derivative Liability, Fair Value, Amount Not Offset Against Collateral |  | 1,400 |  |  |  | 1,400 |  | 1,100
Gain (Loss) on Fair Value Hedges Recognized in Earnings |  | 1 |  | 2 |  | 1 | 2 |
Interest Rate Swap [Member] |  |  |  |  |  |  |  |
Non-qualifying Strategies for Hedge Accounting [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 12,400 |  |  |  | 12,400 |  | 12,900
UNITED STATES | GMWB Hedging Instruments [Member] |  |  |  |  |  |  |  |
Non-qualifying Strategies for Hedge Accounting [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 10,532 |  |  |  | 10,532 |  | 10,979
Derivative, Fair Value, Net |  | 203 |  |  |  | 203 |  | 158
JAPAN | Three Win Related Foreign Currency Swaps [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Change in Unrealized Gain (Loss) on Hedged Item in Foreign Currency Fair Value Hedge |  |  |  |  |  | (108) |  |
GMWB Derivatives, Net [Member] | UNITED STATES |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 3 |  | (4) |  | (14) | (3) |
Macro Hedge Program [Member] | UNITED STATES |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (20) |  | (23) |  | (34) | (27) |
Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Non-qualifying Strategies for Hedge Accounting [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 55,626 |  |  |  | 55,626 |  | 58,492
Derivative, Fair Value, Net |  | (1,080) |  |  |  | (1,080) |  | (924)
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 42 | [1] | (11) | [1] | 13 | (46) |
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 4 |  | 7 |  | (20) | (5) |
Not Designated as Hedging Instrument [Member] | Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (25) |  | 37 |  | (47) | 26 |
Not Designated as Hedging Instrument [Member] | Put Option [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (1) |  | (2) |  | (3) | (3) |
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 22 |  | 1 |  | 25 | 8 |
Not Designated as Hedging Instrument [Member] | Credit Default Swap, Buying Protection [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (2) |  | 0 |  | (7) | (2) |
Not Designated as Hedging Instrument [Member] | Credit Default Swap, Selling Protection [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 6 |  | (11) |  | 4 | (2) |
Not Designated as Hedging Instrument [Member] | Commodity Option [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 0 |  | (5) |  | 0 | (10) |
Not Designated as Hedging Instrument [Member] | Equity Contract [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (5) |  | 6 |  | 13 | 3 |
Not Designated as Hedging Instrument [Member] | UNITED KINGDOM |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 79 |  | (17) |  | 121 | (31) |
Not Designated as Hedging Instrument [Member] | UNITED KINGDOM | Foreign Exchange Contract [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 0 |  |  |  |  |  |
Not Designated as Hedging Instrument [Member] | UNITED STATES | GMWB Hedging Instruments [Member] |  |  |  |  |  |  |  |
Non-qualifying Strategies for Hedge Accounting [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 10,532 |  |  |  | 10,532 |  | 10,979
Derivative, Fair Value, Net |  | 203 |  |  |  | 203 |  | 158
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 32 |  | (66) |  | 82 | (53) |
Not Designated as Hedging Instrument [Member] | UNITED STATES | GMWB Product Derivatives [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (30) |  | 78 |  | (109) | 59 |
Not Designated as Hedging Instrument [Member] | UNITED STATES | GMWB Reinsurance [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 1 |  | (16) |  | 13 | (9) |
Not Designated as Hedging Instrument [Member] | UNITED STATES | Macro Hedge Program [Member] |  |  |  |  |  |  |  |
Non-qualifying Strategies for Hedge Accounting [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 4,699 |  |  |  | 4,699 |  | 4,548
Derivative, Fair Value, Net |  | 147 |  |  |  | 147 |  | 147
Not Designated as Hedging Instrument [Member] | JAPAN | Three Win Related Foreign Currency Swaps [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | [2] | 60 |  | (17) |  |  |  |
Not Designated as Hedging Instrument [Member] | JAPAN | Fixed Annuity Hedging Instruments [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | [2] |  |  |  |  | $ 96 | $ (31) |
Fair Value Hedging [Member] | JAPAN | Three Win Related Foreign Currency Swaps [Member] |  |  |  |  |  |  |  |
Derivative Non-Qualifying Strategy Gain (Loss) Recognized within Net Realized Capital Gains (Losses) [Abstract] |  |  |  |  |  |  |  |
Change in Unrealized Gain (Loss) on Hedged Item in Foreign Currency Fair Value Hedge |  | $ (64) |  | $ 16 |  |  |  | $ 16
[1] | Not included in this amount is the associated liability adjustment for changes in foreign exchange spot rates through realized capital gains (losses) of $(64) and $16 for the three months ended June 30, 2016 and 2015, respectively, and $(108) and $16 for the six months ended June 30, 2016 and 2015, respectively.
[2] | Not included in this amount is the associated transactional foreign currency revaluation related to changes in equity of a P&C runoff entity in the United Kingdom adjusted through realized capital gains (losses) of $(23) for the three and six months ended June 30, 2016.

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