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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, 2022 | Mar. 31, 2021
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Into Level 3 | $ 196 | $ 23
Transfers Out of Level 3 | (126) | (101)
Total | 70 | (78)
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 | 196 | 10
Transfers Out of Level 3 | (62) | (38)
Total | 134 | (28)
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 | (3) |
Total | (3) |
ABS [Member] | Fixed Maturity AFS Securities [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Out of Level 3 | (42) | (58)
Total | (42) | (58)
Trading Securities [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Into Level 3 |  | 13
Transfers Out of Level 3 | (4) | (5)
Total | (4) | $ 8
Derivative Investments [Member] |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |
Transfers Out of Level 3 | (15) |
Total | $ (15) |

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=123874694&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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