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Fair Value of Financial Instruments (Components Of The Transfers In And Out Of Level 3) (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Into Level 3 | $ 83 | $ 66
Transfers Out of Level 3 | (249) | (298)
Transfers Into or Out of Level 3, Net | (166) | (232)
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Into Level 3 | 83 | 40
Transfers Out of Level 3 | (100) | (33)
Transfers Into or Out of Level 3, Net | (17) | 7
RMBS [Member] | Fixed Maturity AFS Securities [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Out of Level 3 | (7) | (12)
Transfers Into or Out of Level 3, Net | (7) | (12)
CLOs [Member] | Fixed Maturity AFS Securities [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Out of Level 3 | (105) | (91)
Transfers Into or Out of Level 3, Net | (105) | (91)
Equity AFS Securities [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Out of Level 3 |  | (162)
Transfers Into or Out of Level 3, Net |  | (162)
Trading Securities [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Out of Level 3 | (37) |
Transfers Into or Out of Level 3, Net | $ (37) |
Equity Securities [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Into Level 3 |  | 26
Transfers Into or Out of Level 3, Net |  | $ 26

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- Definition Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
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- Definition Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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