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Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value |  | $ 4,014 |  | $ 3,139 |  | $ 1,545 |
Items Included in Net Income |  | (417) |  | (437) |  | 650 |
Gains (Losses) in OCI and Other | [1] | 353 |  | (271) |  | 347 |
Issuances, Sales, Maturities, Settlements, Calls, Net |  | 2,013 | [2] | 2,045 |  | 410 |
Transfers Into or Out of Level 3, Net | [4] | (822) | [3] | (462) |  | 187 |
Ending Fair Value |  | 5,141 |  | 4,014 |  | 3,139 |
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 3,269 |  | 3,091 |  | 2,405 |
Items Included in Net Income | [5] | 3 |  | 10 |  | 19 |
Gains (Losses) in OCI and Other | [1],[5] | 180 |  | (199) |  | 198 |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 878 | [2] | 429 |  | 99 |
Transfers Into or Out of Level 3, Net | [4],[5] | (49) | [3] | (62) |  | 370 |
Ending Fair Value | [5] | 4,281 |  | 3,269 |  | 3,091 |
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member] | Liberty Transaction [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net |  | 67 |  |  |  |  |
ABS [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 134 |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] | 1 |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[5] | 619 |  |  |  |  |
Transfers Into or Out of Level 3, Net | [3],[4],[5] | (486) |  |  |  |  |
Ending Fair Value | [5] | 268 |  | 134 |  |  |
ABS [Member] | Fixed Maturity AFS Securities [Member] | Liberty Transaction [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net |  | 17 |  |  |  |  |
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] |  |  | 5 |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] |  |  | (5) |  |  |
Transfers Into or Out of Level 3, Net | [4] | 5 | [3] |  |  | 5 | [5]
Ending Fair Value |  | 5 |  |  |  | 5 | [5]
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 109 |  | 110 |  | 111 |
Items Included in Net Income | [5] |  |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] | 6 |  | (1) |  | (1) |
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[5] | (25) |  |  |  |  |
Transfers Into or Out of Level 3, Net | [3],[4],[5] |  |  |  |  |  |
Ending Fair Value | [5] | 90 |  | 109 |  | 110 |
RMBS [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 7 |  | 12 |  | 3 |
Items Included in Net Income | [5] |  |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 21 | [2] | 7 |  | 20 |
Transfers Into or Out of Level 3, Net | [4],[5] | (17) | [3] | (12) |  | (11) |
Ending Fair Value | [5] | 11 |  | 7 |  | 12 |
CMBS [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 2 |  | 6 |  | 7 |
Items Included in Net Income | [5] | 1 |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] |  |  |  |  | 1 |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 5 | [2] | 35 |  | 54 |
Transfers Into or Out of Level 3, Net | [4],[5] | (7) | [3] | (39) |  | (56) |
Ending Fair Value | [5] | 1 |  | 2 |  | 6 |
CLOs [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 134 |  | 118 |  | 101 |
Gains (Losses) in OCI and Other | [1],[5] |  |  | (1) |  | (1) |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] |  |  | 223 |  | 124 |
Transfers Into or Out of Level 3, Net | [4],[5] |  |  | (206) |  | (106) |
Ending Fair Value | [5] |  |  | 134 |  | 118 |
State And Municipal Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Items Included in Net Income |  |  |  |  |  | (1) |
Transfers Into or Out of Level 3, Net | [4] |  |  |  |  | 1 |
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 75 |  | 76 |  | 76 |
Gains (Losses) in OCI and Other | [1],[5] | 3 |  | (1) |  | 15 |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] |  |  |  |  | (1) |
Transfers Into or Out of Level 3, Net | [4],[5] |  |  |  |  | (14) |
Ending Fair Value | [5] | 78 |  | 75 |  | 76 |
Equity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] |  |  | 162 |  |  |
Transfers Into or Out of Level 3, Net | [4],[5] |  |  | (162) |  |  |
Ending Fair Value | [5] |  |  |  |  | 162 |
Trading Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 67 |  | 49 |  | 65 |
Items Included in Net Income | [5] | 17 |  | (5) |  | 3 |
Gains (Losses) in OCI and Other | [1],[5] |  |  |  |  | 8 |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 850 | [2] | 30 |  | (26) |
Transfers Into or Out of Level 3, Net | [4],[5] | (268) | [3] | (7) |  | (1) |
Ending Fair Value | [5] | 666 |  | 67 |  | 49 |
Equity Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 25 |  | 162 |  | 177 |
Items Included in Net Income |  | (12) | [5] | (1) |  | 1 | [5]
Gains (Losses) in OCI and Other | [1],[5] |  |  |  |  | (2) |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 17 | [2] |  |  | (13) |
Transfers Into or Out of Level 3, Net | [4] |  |  | 26 |  | (1) | [5]
Ending Fair Value | [5] | 30 |  | 25 |  | 162 |
Derivative Investments [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 534 |  | 30 |  | (93) |
Items Included in Net Income | [5] | 10 |  | 170 |  | (27) |
Gains (Losses) in OCI and Other | [1],[5] | 163 |  | (69) |  | 129 |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 161 | [2] | 403 |  | 21 |
Ending Fair Value | [5] | 868 |  | 534 |  | 30 |
GLB Direct Embedded Derivatives [Member] | Other Assets [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | 123 |  | 903 |  |  |
Items Included in Net Income |  | 327 | [6] | (780) | [6] | 903 |
Ending Fair Value | [6] | 450 |  | 123 |  | 903 |
GLB Direct Embedded Derivatives [Member] | Other Liabilities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] |  |  | (67) |  |  |
Items Included in Net Income | [6] |  |  | 67 |  | (67) |
Ending Fair Value | [6] |  |  |  |  | (67) |
GLB Ceded Embedded Derivatives [Member] | Other Assets [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value |  | 72 | [6] | 51 | [6] | 203 |
Items Included in Net Income |  | (12) | [6] | 21 | [6] | (152) |
Ending Fair Value | [6] | 60 |  | 72 |  | 51 |
GLB Ceded Embedded Derivatives [Member] | Other Liabilities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Items Included in Net Income | [6] | (9) |  |  |  |  |
Ending Fair Value | [6] | (9) |  |  |  |  |
Indexed Annuity And IUL Contracts [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | 902 |  |  |  |  |
Items Included in Net Income | [6] | 158 |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[6] | (133) |  |  |  |  |
Ending Fair Value | [6] | 927 |  | 902 |  |  |
Indexed Annuity And IUL Contracts [Member] | Other Assets [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | 902 |  | 11 |  |  |
Items Included in Net Income | [6] |  |  | (117) |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net |  |  |  | 1,008 | [6] | 11 |
Ending Fair Value | [6] |  |  | 902 |  | 11 |
Indexed Annuity And IUL Contracts [Member] | Future Contract Benefits [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | (1,305) |  | (1,418) |  | (1,139) |
Items Included in Net Income | [6] | (900) |  | 198 |  | (400) |
Issuances, Sales, Maturities, Settlements, Calls, Net | [6] | (380) | [2] | (85) |  | 121 |
Ending Fair Value | [6] | $ (2,585) |  | $ (1,305) |  | (1,418) |
Credit Default Swaps [Member] | Other Liabilities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value |  |  |  |  |  | (371) |
Items Included in Net Income |  |  |  |  |  | $ 371 |
[1] | The changes in fair value of the interest rate swaps are offset by an adjustment to derivative investments (see Note 6).
[2] | Issuances, sales, maturities, settlements, calls, net, includes financial instruments acquired in the Liberty Life transaction as follows: corporate bonds of $67 million and ABS of $17 million.
[3] | Transfers into or out of Level 3 for FHLB stock between equity securities and other investments are reported at cost on our Consolidated Balance Sheets.
[4] | Transfers into or out of Level 3 for fixed maturity AFS and trading securities are reported at amortized cost as of the beginning-of-year. For fixed maturity AFS and trading securities, the difference between beginning-of-year amortized cost and beginning-of-year fair value was included in OCI and earnings, respectively, in the prior years.
[5] | Amortization and accretion of premiums and discounts are included in net investment income on our Consolidated Statements of Comprehensive Income (Loss). Gains (losses) from sales, maturities, settlements and calls and OTTI are included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).
[6] | Gains (losses) from sales, maturities, settlements and calls are included in realized gain (loss) on our Consolidated Statements of Comprehensive Income (Loss).

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