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Derivative Instruments (Gains (Losses) On Derivative Instruments Recorded Within Income (Loss) From Continuing Operations) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Gains (losses) |  |  |
Gains (losses) |  | $ (216) | $ (605)
Designated as Hedging Instrument [Member] | Cash Flow Hedges [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) |  | 24 | 13
Designated as Hedging Instrument [Member] | Fair Value Hedges [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) |  | 36 | 11
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash Flow Hedges [Member] | Interest Rate Contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [1] | 4 | 4
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Cash Flow Hedges [Member] | Foreign currency contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [1] |  | 18
Designated as Hedging Instrument [Member] | Net Investment Income [Member] | Fair Value Hedges [Member] | Interest Rate Contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [1] | (14) | (23)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Cash Flow Hedges [Member] | Interest Rate Contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [2] | (7) | (18)
Designated as Hedging Instrument [Member] | Interest and Debt Expense [Member] | Fair Value Hedges [Member] | Interest Rate Contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [2] | 13 | 27
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Cash Flow Hedges [Member] | Foreign currency contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [3] | 27 | 9
Designated as Hedging Instrument [Member] | Realized Gain (Loss) [Member] | Fair Value Hedges [Member] | Interest Rate Contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [3] | 37 | 7
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Interest Rate Contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [3] | (150) | 103
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Foreign currency contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [3] | 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] | 444 | (1,427)
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Credit contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [3] |  | 1
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | GLB Embedded Derivatives [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [3] | (692) | 1,055
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Reinsurance Related [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [3] | 54 | 10
Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] | Realized Gain (Loss) [Member] | Indexed Annuity And IUL Contracts [Member] |  |  |
Gains (losses) |  |  |
Gains (losses) | [3] | 81 | (400)
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] | $ (18) | $ 29
[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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