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Fair Value of Financial Instruments (Fair Value Measured On A Recurring Basis Reconciliation) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value |  | $ 3,476 |  | $ 2,324 | $ 3,139 |  | $ 1,545
Items Included in Net Income |  | 58 |  | 177 | 541 |  | 546
Gains (Losses) in OCI and Other | [1] | (86) |  | 46 | (252) |  | 270
Issuances, Sales, Maturities, Settlements, Calls, Net |  | 567 | [2] | (101) | 889 | [2] | 45
Transfers Into or Out of Level 3, Net | [3] | (148) |  | (7) | (450) | [4] | 33
Ending Fair Value |  | 3,867 |  | 2,439 | 3,867 |  | 2,439
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 3,181 |  | 2,517 | 3,091 |  | 2,405
Items Included in Net Income | [5] | 1 |  | 4 | 7 |  | 15
Gains (Losses) in OCI and Other | [1],[5] | (30) |  | 35 | (137) |  | 153
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 88 | [2] | (35) | 319 | [2] | (182)
Transfers Into or Out of Level 3, Net | [3],[5] | (31) |  | 59 | (71) | [4] | 189
Ending Fair Value | [5] | 3,209 |  | 2,580 | 3,209 |  | 2,580
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member] | Liberty Transaction [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net |  | 67 |  |  | 67 |  |
ABS [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 31 |  | 43 | 27 |  | 33
Items Included in Net Income | [5] |  |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] |  |  | (1) | (1) |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] |  | [2] |  | 5 | [2] |
Transfers Into or Out of Level 3, Net | [3],[5] |  |  | (15) |  |  | (6)
Ending Fair Value | [5] | 31 |  | 27 | 31 |  | 27
ABS [Member] | Fixed Maturity AFS Securities [Member] | Liberty Transaction [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net |  | 17 |  |  | 17 |  |
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] |  |  | 5 | 5 |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[5] |  |  |  | (5) |  |
Transfers Into or Out of Level 3, Net | [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] | 108 |  | 109 | 110 |  | 111
Items Included in Net Income | [5] |  |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] |  |  | 1 | (2) |  | (1)
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[5] |  |  |  |  |  |
Transfers Into or Out of Level 3, Net | [3],[5] |  |  |  |  |  |
Ending Fair Value | [5] | 108 |  | 110 | 108 |  | 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] | 7 | [2] | 6 | 7 | [2] | 10
Transfers Into or Out of Level 3, Net | [3],[5] |  |  |  | (12) | [4] |
Ending Fair Value | [5] | 7 |  | 13 | 7 |  | 13
CMBS [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 5 |  | 21 | 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] | 18 | [2] | (1) | 37 | [2] | 54
Transfers Into or Out of Level 3, Net | [3],[5] |  |  | (14) | (21) | [4] | (56)
Ending Fair Value | [5] | 23 |  | 6 | 23 |  | 6
CLOs [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 145 |  | 28 | 91 |  | 68
Items Included in Net Income | [5] |  |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 17 | [2] | 15 | 164 | [2] | 33
Transfers Into or Out of Level 3, Net | [3],[5] | (111) |  | (28) | (204) | [4] | (86)
Ending Fair Value | [5] | 51 |  | 15 | 51 |  | 15
State And Municipal Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Items Included in Net Income | [5] |  |  |  |  |  | (1)
Transfers Into or Out of Level 3, Net | [3],[5] |  |  |  |  |  | 1
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 78 |  | 82 | 76 |  | 76
Items Included in Net Income | [5] |  |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] | (1) |  | 3 | 1 |  | 14
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[5] |  |  |  |  |  |
Transfers Into or Out of Level 3, Net | [3],[5] |  |  | (9) |  |  | (14)
Ending Fair Value | [5] | 77 |  | 76 | 77 |  | 76
Equity AFS Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] |  |  | 183 | 162 |  | 177
Items Included in Net Income | [5] |  |  |  |  |  | 1
Gains (Losses) in OCI and Other | [1],[5] |  |  | (1) |  |  | (2)
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] |  |  | 9 |  |  | 15
Transfers Into or Out of Level 3, Net | [3],[5] |  |  | (1) | (162) | [4] | (1)
Ending Fair Value | [5] |  |  | 190 |  |  | 190
Trading Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 22 |  | 59 | 49 |  | 65
Items Included in Net Income | [5] |  |  |  | (5) |  | 2
Gains (Losses) in OCI and Other | [1],[5] |  |  |  |  |  | 8
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 2 | [2] | (10) | (20) | [2] | (26)
Transfers Into or Out of Level 3, Net | [3],[5] | (6) |  | 1 | (6) | [4] | 1
Ending Fair Value | [5] | 18 |  | 50 | 18 |  | 50
Equity Securities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 26 |  |  |  |  |
Items Included in Net Income | [5] |  |  |  |  |  |
Gains (Losses) in OCI and Other | [1],[5] |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[5] |  |  |  |  |  |
Transfers Into or Out of Level 3, Net | [3],[5] |  |  |  | 26 | [4] |
Ending Fair Value | [5] | 26 |  |  | 26 |  |
Derivative Investments [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [5] | 93 |  | 155 | 30 |  | (93)
Items Included in Net Income | [5] | (115) |  | (13) | 106 |  | (25)
Gains (Losses) in OCI and Other | [1],[5] | (55) |  | 9 | (113) |  | 97
Issuances, Sales, Maturities, Settlements, Calls, Net | [5] | 431 | [2] | (85) | 331 | [2] | 87
Transfers Into or Out of Level 3, Net | [3],[5] |  |  |  |  |  |
Ending Fair Value | [5] | 354 |  | 66 | 354 |  | 66
GLB Direct Embedded Derivatives [Member] | Other Assets [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | 1,248 |  | 298 | 903 |  |
Items Included in Net Income | [6] | 400 |  | 272 | 745 |  | 570
Gains (Losses) in OCI and Other | [1],[6] |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[6] |  |  |  |  |  |
Transfers Into or Out of Level 3, Net | [3],[6] |  |  |  |  |  |
Ending Fair Value | [6] | 1,648 |  | 570 | 1,648 |  | 570
GLB Direct Embedded Derivatives [Member] | Other Liabilities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] |  |  |  |  |  | (371)
Items Included in Net Income | [6] |  |  |  |  |  | 371
GLB Ceded Embedded Derivatives [Member] | Other Assets [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | 41 |  | 85 | 51 |  | 203
Items Included in Net Income | [6] | (6) |  | (32) | (16) |  | (150)
Gains (Losses) in OCI and Other | [1],[6] |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[6] |  |  |  |  |  |
Transfers Into or Out of Level 3, Net | [3],[6] |  |  |  |  |  |
Ending Fair Value | [6] | 35 |  | 53 | 35 |  | 53
GLB Ceded Embedded Derivatives [Member] | Other Liabilities [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | (131) |  |  | (67) |  |
Items Included in Net Income | [6] | (62) |  | (7) | (126) |  | (7)
Gains (Losses) in OCI and Other | [1],[6] |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [2],[6] |  |  |  |  |  |
Transfers Into or Out of Level 3, Net | [3],[6] |  |  |  |  |  |
Ending Fair Value | [6] | (193) |  | (7) | (193) |  | (7)
Indexed Annuity And Embedded Derivatives [Member] | Other Assets [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | 29 |  |  | 11 |  |
Items Included in Net Income | [6] | 4 |  |  | 4 |  |
Gains (Losses) in OCI and Other | [1],[6] |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [6] | 11 | [2] | 3 | 29 | [2] | 3
Transfers Into or Out of Level 3, Net | [3],[6] |  |  |  |  |  |
Ending Fair Value | [6] | 44 |  | 3 | 44 |  | 3
Indexed Annuity And Embedded Derivatives [Member] | Future Contract Benefits [Member] |  |  |  |  |  |  |
Level 3 Unobservable Input Reconciliation |  |  |  |  |  |  |
Beginning Fair Value | [6] | (1,400) |  | (1,268) | (1,418) |  | (1,139)
Items Included in Net Income | [6] | (164) |  | (47) | (175) |  | (230)
Gains (Losses) in OCI and Other | [1],[6] |  |  |  |  |  |
Issuances, Sales, Maturities, Settlements, Calls, Net | [6] | (7) | [2] | (3) | 22 | [2] | 51
Transfers Into or Out of Level 3, Net | [3],[6] |  |  |  |  |  |
Ending Fair Value | [6] | $ (1,571) |  | $ (1,318) | $ (1,571) |  | $ (1,318)
[1] | The changes in fair value of the interest rate swaps are offset by an adjustment to derivative investments (see Note 5).
[2] | Net issuances, sales, maturities, settlements, calls, net include financial instruments acquired from Liberty Life as follows: corporate bonds of $67 million and ABS of $17 million.
[3] | Transfers into or out of Level 3 for AFS and trading securities are displayed at amortized cost as of the beginning-of-year. For AFS and trading securities, the difference between beginning-of-period amortized cost and beginning-of-period fair value was included in OCI and earnings, respectively, in the prior period.
[4] | Transfers into or out of Level 3 for FHLB stock between equity securities and other investments at cost on our Consolidated Balance Sheets.
[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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