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Derivative Instruments (Gains (Losses) On Derivative Instruments Recorded Within Income (Loss) From Continuing Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Gains (losses) |  |  |  |  |
Gains (losses) |  | $ (128) | $ 30 | $ (411) | $ (610)
Designated as Hedging Instrument [Member] | Cash Flow Hedges [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) |  | 1 | 5 | 7 | 12
Designated as Hedging Instrument [Member] | Fair Value Hedges [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) |  | 3 | 5 | 5 | (79)
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash Flow Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [1] | 2 | 1 | 3 | 4
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash Flow Hedges [Member] | Foreign currency contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [1] | 4 | 4 | 12 | 7
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Fair Value Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [1] | (5) | (8) | (18) | (22)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Cash Flow Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [2] | (5) | (4) | (13) | (6)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Fair Value Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [2] | 6 | 8 | 21 | 24
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Cash Flow Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] |  | 1 |  | 1
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Cash Flow Hedges [Member] | Foreign currency contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] |  | 3 | 5 | 6
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Fair Value Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | 2 | 5 | 2 | (81)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | 18 | 19 | 161 | 1,609
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Foreign currency contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | 1 | (2) | 1 | (5)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Equity market contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | (347) | (519) | (1,163) | (1,100)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Credit contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] |  | 1 |  | (6)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Embedded derivatives - GLB [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | 233 | 581 | 784 | (924)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Embedded derivatives - Reinsurance related [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | 3 | (3) | 3 | (50)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Indexed annuity and embedded derivatives [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | (46) | (64) | (230) | (76)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Commissions and other expenses [Member] | Equity market contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [4] | $ 6 | $ 7 | $ 21 | $ 9
[1] | Reported in net investment income on our Consolidated Statements of Comprehensive Income (Loss).
[2] | Reported in interest and debt expense on our Consolidated Statements of Comprehensive Income (Loss).
[3] | Reported in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).
[4] | Reported in commissions and other expenses on our Consolidated Statements of Comprehensive Income (Loss).

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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