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Derivative Instrument Level 4 Derivative Balance Sheet Classification (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | $ 56,216 | $ 62,185
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 1,977 | 2,021
Derivative, Fair Value, Net | (1,001) | (926)
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 976 | 1,095
Derivative Asset, Fair Value, Gross Asset | 834 | 933
Derivative Liability, Fair Value, Gross Liability | 1,703 | 1,730
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset | 884 | 818
Derivative Liability, Fair Value, Amount Not Offset Against Collateral | 963 | 1,100
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | 670 | 756
Derivative Liability, Fair Value, Amount Offset Against Collateral | 56 | 23
Derivative, Collateral, Obligation to Return Cash | 344 | 176
Derivative Asset, Fair Value of Collateral | 103 | 100
Derivative Asset, Fair Value, Amount Offset Against Collateral | 61 | 77
Derivative, Collateral, Right to Reclaim Cash | (130) | (114)
Derivative Liability, Fair Value of Collateral | 763 | 889
Fixed Maturities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 322 | 425
Derivative, Fair Value, Net | 1 | (3)
Derivative Asset, Fair Value, Gross Asset | 1 | 0
Derivative Liability, Fair Value, Gross Liability | 0 | 3
Other Investments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 23,620 | 23,253
Derivative, Fair Value, Net | (180) | 1
Derivative Asset, Fair Value, Gross Asset | 377 | 409
Derivative Liability, Fair Value, Gross Liability | 557 | 408
Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 15,526 | 19,358
Derivative, Fair Value, Net | (689) | (798)
Derivative Asset, Fair Value, Gross Asset | 457 | 524
Derivative Liability, Fair Value, Gross Liability | 1,146 | 1,322
Reinsurance Recoverable [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 3,584 | 4,000
Derivative, Fair Value, Net | 141 | 162
Derivative Asset, Fair Value, Gross Asset | 141 | 162
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Other Policyholder Funds and Benefits Payable [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 13,164 | 15,149
Derivative, Fair Value, Net | (274) | (288)
Derivative Asset, Fair Value, Gross Asset | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 274 | 288
Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 52,537 | 58,492
Derivative, Fair Value, Net | (907) | (924)
Derivative Asset, Fair Value, Gross Asset | 954 | 1,038
Derivative Liability, Fair Value, Gross Liability | 1,861 | 1,962
Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets (Liabilities), at Fair Value, Net | (689) | (798)
Derivative Financial Instruments, Assets [Member] | Other Investments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets (Liabilities), at Fair Value, Net | (180) | 1
Three Win Related Foreign Currency Swaps [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 804 | 1,063
Derivative, Fair Value, Net | (263) | (357)
Derivative Asset, Fair Value, Gross Asset | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 263 | 357
Fair Value Hedging [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 0 | 23
Derivative, Fair Value, Net | 0 | 0
Derivative Asset, Fair Value, Gross Asset | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Interest Rate Contract [Member] | Other Investments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets (Liabilities), at Fair Value, Net | (427) | (227)
Interest Rate Contract [Member] | Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets (Liabilities), at Fair Value, Net | (542) |
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 11,743 | 14,290
Derivative, Fair Value, Net | (890) | (814)
Derivative Asset, Fair Value, Gross Asset | 264 | 297
Derivative Liability, Fair Value, Gross Liability | 1,154 | 1,111
Cash Flow Hedging [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 3,679 | 3,670
Derivative, Fair Value, Net | (94) | (2)
Derivative Asset, Fair Value, Gross Asset | 22 | 57
Derivative Liability, Fair Value, Gross Liability | 116 | 59
Currency Swap [Member] | Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Fair Value, Net | (15) |
Currency Swap [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 1,064 | 653
Derivative, Fair Value, Net | 68 | 17
Derivative Asset, Fair Value, Gross Asset | 70 | 17
Derivative Liability, Fair Value, Gross Liability | 2 | 0
Credit Default Swap, Buying Protection [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 209 | 423
Derivative, Fair Value, Net | (4) | 18
Derivative Asset, Fair Value, Gross Asset | 0 | 22
Derivative Liability, Fair Value, Gross Liability | 4 | 4
Credit Default Swap, Selling Protection [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 1,309 | 2,458
Derivative, Fair Value, Net | 10 | (13)
Derivative Asset, Fair Value, Gross Asset | 15 | 9
Derivative Liability, Fair Value, Gross Liability | 5 | 22
Credit Derivatives in Offsetting Positions [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 3,317 | 4,059
Derivative, Fair Value, Net | (1) | (2)
Derivative Asset, Fair Value, Gross Asset | 39 | 40
Derivative Liability, Fair Value, Gross Liability | 40 | 42
Equity Contract [Member] | Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets (Liabilities), at Fair Value, Net | 33 |
Equity Contract [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 105 | 419
Derivative, Fair Value, Net | 0 | 15
Derivative Asset, Fair Value, Gross Asset | 33 | 41
Derivative Liability, Fair Value, Gross Liability | 33 | 26
GMWB Product Derivatives [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 13,114 | 15,099
Derivative, Fair Value, Net | (241) | (262)
Derivative Asset, Fair Value, Gross Asset | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 241 | 262
GMWB Reinsurance [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 2,709 | 3,106
Derivative, Fair Value, Net | 73 | 83
Derivative Asset, Fair Value, Gross Asset | 73 | 83
Derivative Liability, Fair Value, Gross Liability | 0 | 0
GMWB Hedging Instruments [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 10,256 | 10,979
Derivative, Fair Value, Net | 94 | 158
Derivative Asset, Fair Value, Gross Asset | 190 | 264
Derivative Liability, Fair Value, Gross Liability | 96 | 106
Macro Hedge Program [Member] | Other Investments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets (Liabilities), at Fair Value, Net | 128 | 74
Macro Hedge Program [Member] | Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Assets (Liabilities), at Fair Value, Net | 50 | 73
Macro Hedge Program [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 6,532 | 4,548
Derivative, Fair Value, Net | 178 | 147
Derivative Asset, Fair Value, Gross Asset | 201 | 179
Derivative Liability, Fair Value, Gross Liability | 23 | 32
Put Option [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 500 | 500
Derivative, Fair Value, Net | 1 | 7
Derivative Asset, Fair Value, Gross Asset | 1 | 7
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Fair Value, Net | 68 | 79
Derivative Asset, Fair Value, Gross Asset | 68 | 79
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount |  | 895
Invested Assets Suppoting Modco | 875 | 895
Fair Value Hedging [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 0 | 23
Derivative, Fair Value, Net | 0 | 0
Derivative Asset, Fair Value, Gross Asset | 0 | 0
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Fair Value Hedging [Member] | Equity Contract [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Fair Value, Net | (27) | 2
Fair Value Hedging [Member] | GMWB Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Fair Value, Net | 94 | 158
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 3,440 | 3,527
Derivative, Fair Value, Net | (79) | 17
Derivative Asset, Fair Value, Gross Asset | 11 | 50
Derivative Liability, Fair Value, Gross Liability | 90 | 33
Cash Flow Hedging [Member] | Currency Swap [Member] | Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Notional Amount | 239 | 143
Derivative, Fair Value, Net |  | (19)
Derivative Asset, Fair Value, Gross Asset | 11 | 7
Derivative Liability, Fair Value, Gross Liability | $ 26 | $ 26

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- Definition Amount of invested assets supporting other policyholder fund liabilities under a modified coinsurance agreement. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, and obligation to return cash collateral under master netting arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226003-175313 + Details
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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=64830801&loc=SL51823488-111719 + Details
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