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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, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Gains (losses) |  |  |  |  |
Gains (losses) |  | $ (158) | $ (128) | $ (300) | $ (411)
Designated as Hedging Instrument [Member] | Cash Flow Hedges [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) |  | 4 | 1 | 15 | 7
Designated as Hedging Instrument [Member] | Fair Value Hedges [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) |  | 20 | 3 | 64 | 5
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash Flow Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [1] | 1 | 2 | 3 | 3
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash Flow Hedges [Member] | Foreign currency contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [1] | 7 | 4 | 18 | 12
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Fair Value Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [1] | (2) | (5) | (11) | (18)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Cash Flow Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [2] | (4) | (5) | (6) | (13)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Fair Value Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [2] | 5 | 6 | 11 | 21
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Cash Flow Hedges [Member] | Foreign currency contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] |  |  |  | 5
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Fair Value Hedges [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | 17 | 2 | 64 | 2
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Interest rate contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | (167) | 18 | (577) | 161
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
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Equity market contracts [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | (199) | (347) | (280) | (1,163)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | GLB Embedded Derivatives [Member] |  |  |  |  |
Gains (losses) |  |  |  |  |
Gains (losses) | [3] | 333 | 233 | 603 | 784
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] | 5 | 3 | 37 | 3
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] | (164) | (46) | (175) | (230)
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] | $ 10 | $ 6 | $ 11 | $ 21
[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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- References No definition available. + Details
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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 + Details
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