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Fair Value of Assets and Liabilities (Details 3) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | $ 842 | $ 1,019 | $ 735 | $ 973
Total gains (losses) included in: net income | 3 | 4 | 23 | (14)
Total gains (losses) included in: OCI | 4 | 4 | 13 | 21
Transfers into Level 3 | 0 | 0 | 60 | 60
Transfers out of Level 3 | (173) | (286) | (322) | (383)
Purchases | 83 | 221 | 371 | 382
Sales | (5) | (21) | (106) | (46)
Issues | 0 | 0 | 0 | 0
Settlements | (13) | (32) | (33) | (84)
Balance at end of period | 741 | 909 | 741 | 909
Fair Value Liabilities Measured on Recurring Basis Unobservable Input Reconciliation Calculation |  |  |  |
Balance at the beginning of the period | (285) | (304) | (290) | (299)
Total gains (losses) included in: net income | 9 | 3 | 6 | 11
Total gains (losses) included in: OCI | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issues | 0 | (1) | (1) | (2)
Settlements | 2 | 1 | 5 | 5
Balance at the end of the period | (292) | (307) | (292) | (307)
Fair value assets and liabilities measured on recurring basis, gain (loss) included in earnings |  |  |  |
Total realized and unrealized gains (losses) included in net income, recurring Level 3 assets and liabilities | (6) | 1 | 17 | (25)
Free-standing derivatives | 1 | 1 | 1 | 1
Free-standing derivatives, liabilities |  | 4 |  | 4
Realized capital gains and losses |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Total gains (losses) included in: net income |  | 1 | 7 | (24)
Fair value assets and liabilities measured on recurring basis, gain (loss) included in earnings |  |  |  |
Change in unrealized gain (loss) | (3) | 1 | (3) | (37)
(Loss) gain reclassified from AOCI into income (net investment income) |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Total gains (losses) included in: net income | 3 | 3 | 17 | 10
Fair value assets and liabilities measured on recurring basis, gain (loss) included in earnings |  |  |  |
Change in unrealized gain (loss) | 3 | 3 | 17 | 11
Interest credited to contractholder funds |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Total gains (losses) included in: net income | (5) | (6) | (11) | (12)
Fair value assets and liabilities measured on recurring basis, gain (loss) included in earnings |  |  |  |
Change in unrealized gain (loss) | (5) | (6) | (11) | (12)
Life and annuity contract benefits |  |  |  |
Fair value assets and liabilities measured on recurring basis, gain (loss) included in earnings |  |  |  |
Change in unrealized gain (loss) | (4) | 3 | 4 | 1
Fixed income securities |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 675 | 907 | 558 | 846
Total gains (losses) included in: net income | 1 | 1 | 6 | 15
Total gains (losses) included in: OCI | 3 | 4 | 9 | 13
Transfers into Level 3 | 0 | 0 | 60 | 60
Transfers out of Level 3 | (172) | (286) | (318) | (383)
Purchases | 83 | 178 | 343 | 330
Sales | (5) | (21) | (53) | (46)
Issues | 0 | 0 | 0 | 0
Settlements | (13) | (32) | (33) | (84)
Balance at end of period | 572 | 751 | 572 | 751
U.S. government and agencies |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period |  |  |  | 5
Total gains (losses) included in: net income |  |  |  | 0
Total gains (losses) included in: OCI |  |  |  | 0
Transfers into Level 3 |  |  |  | 0
Transfers out of Level 3 |  |  |  | (4)
Purchases |  |  |  | 0
Sales |  |  |  | 0
Issues |  |  |  | 0
Settlements |  |  |  | (1)
Balance at end of period |  | 0 |  | 0
Municipal |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 114 | 149 | 125 | 161
Total gains (losses) included in: net income | 0 | 1 | (1) | 11
Total gains (losses) included in: OCI | 0 | (1) | 6 | (6)
Transfers into Level 3 | 0 | 0 | 0 | 6
Transfers out of Level 3 | (4) | 0 | (5) | 0
Purchases | 1 | 22 | 6 | 22
Sales | (3) | (11) | (23) | (33)
Issues | 0 | 0 | 0 | 0
Settlements | (1) | 0 | (1) | (1)
Balance at end of period | 107 | 160 | 107 | 160
Corporate - public |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 60 | 74 | 78 | 46
Total gains (losses) included in: net income | 0 | 0 | 0 | 0
Total gains (losses) included in: OCI | 0 | 0 | 0 | 1
Transfers into Level 3 | 0 | 0 | 0 | 25
Transfers out of Level 3 | (4) | (6) | (20) | (13)
Purchases | 51 | 40 | 50 | 47
Sales | (1) | (10) | 0 | (6)
Issues | 0 | 0 | 0 | 0
Settlements | (2) | 0 | (4) | (2)
Balance at end of period | 104 | 98 | 104 | 98
Corporate - privately placed |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 266 | 585 | 263 | 502
Total gains (losses) included in: net income | 1 | 0 | 7 | 4
Total gains (losses) included in: OCI | 2 | 2 | 0 | 15
Transfers into Level 3 | 0 | 0 | 30 | 16
Transfers out of Level 3 | (34) | (280) | (34) | (363)
Purchases | 18 | 38 | 22 | 181
Sales | (1) | 0 | (30) | 0
Issues | 0 | 0 | 0 | 0
Settlements | (2) | (29) | (8) | (39)
Balance at end of period | 250 | 316 | 250 | 316
ABS - CDO |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 91 | 33 | 27 | 61
Total gains (losses) included in: net income | 0 | 0 | 0 | 0
Total gains (losses) included in: OCI | 1 | 3 | 3 | 5
Transfers into Level 3 | 0 | 0 | 30 | 10
Transfers out of Level 3 | (68) | 0 | (190) | (3)
Purchases | 0 | 40 | 160 | 40
Sales | 0 | 0 | 0 | (2)
Issues | 0 | 0 | 0 | 0
Settlements | (5) | (2) | (11) | (37)
Balance at end of period | 19 | 74 | 19 | 74
ABS - consumer and other |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 120 | 45 | 42 | 50
Total gains (losses) included in: net income | 0 | 0 | 0 | 0
Total gains (losses) included in: OCI | 0 | 0 | 0 | (2)
Transfers into Level 3 | 0 | 0 | 0 | 3
Transfers out of Level 3 | (62) | 0 | (69) | 0
Purchases | 10 | 35 | 99 | 35
Sales | 0 | 0 | 0 | (5)
Issues | 0 | 0 | 0 | 0
Settlements | (2) | (1) | (6) | (2)
Balance at end of period | 66 | 79 | 66 | 79
Residential mortgage-backed securities (“RMBS”) |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period |  | 1 | 1 | 1
Total gains (losses) included in: net income |  | 0 | 0 | 0
Total gains (losses) included in: OCI |  | 0 | 0 | 0
Transfers into Level 3 |  | 0 | 0 | 0
Transfers out of Level 3 |  | 0 | 0 | 0
Purchases |  | 0 | 0 | 0
Sales |  | 0 | 0 | 0
Issues |  | 0 | 0 | 0
Settlements |  | 0 | (1) | 0
Balance at end of period | 0 | 1 | 0 | 1
Commercial mortgage-backed securities (“CMBS”) |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 24 | 20 | 22 | 20
Total gains (losses) included in: net income | 0 | 0 | 0 | 0
Total gains (losses) included in: OCI | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Purchases | 3 | 3 | 6 | 5
Sales | 0 | 0 | 0 | 0
Issues | 0 | 0 | 0 | 0
Settlements | (1) | 0 | (2) | (2)
Balance at end of period | 26 | 23 | 26 | 23
Equity securities |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 166 | 118 | 163 | 133
Total gains (losses) included in: net income | 2 | (1) | 15 | (33)
Total gains (losses) included in: OCI | 1 | 0 | 4 | 8
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | (1) | 0 | (4) | 0
Purchases | 0 | 43 | 3 | 52
Sales | 0 | 0 | (13) | 0
Issues | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Balance at end of period | 168 | 160 | 168 | 160
Short-term investments |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period |  |  | 15 |
Total gains (losses) included in: net income |  |  | 0 |
Total gains (losses) included in: OCI |  |  | 0 |
Transfers into Level 3 |  |  | 0 |
Transfers out of Level 3 |  |  | 0 |
Purchases |  |  | 25 |
Sales |  |  | (40) |
Issues |  |  | 0 |
Settlements |  |  | 0 |
Balance at end of period | 0 |  | 0 |
Free-standing derivatives, net |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period | 1 | (7) | (2) | (7)
Total gains (losses) included in: net income | 0 | 4 | 3 | 4
Total gains (losses) included in: OCI | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issues | 0 | 0 | 0 | 0
Settlements | 0 | 0 | 0 | 0
Balance at end of period | 1 | (3) | 1 | (3)
Other assets |  |  |  |
Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation Calculation Rollforward |  |  |  |
Balance at beginning of period |  | 1 | 1 | 1
Total gains (losses) included in: net income |  | 0 | (1) | 0
Total gains (losses) included in: OCI |  | 0 | 0 | 0
Transfers into Level 3 |  | 0 | 0 | 0
Transfers out of Level 3 |  | 0 | 0 | 0
Purchases |  | 0 | 0 | 0
Sales |  | 0 | 0 | 0
Issues |  | 0 | 0 | 0
Settlements |  | 0 | 0 | 0
Balance at end of period | 0 | 1 | 0 | 1
Derivatives embedded in life and annuity contracts |  |  |  |
Fair Value Liabilities Measured on Recurring Basis Unobservable Input Reconciliation Calculation |  |  |  |
Balance at the beginning of the period | (285) | (304) | (290) | (299)
Total gains (losses) included in: net income | 9 | 3 | 6 | 11
Total gains (losses) included in: OCI | 0 | 0 | 0 | 0
Transfers into Level 3 | 0 | 0 | 0 | 0
Transfers out of Level 3 | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Sales | 0 | 0 | 0 | 0
Issues | 0 | (1) | (1) | (2)
Settlements | 2 | 1 | 5 | 5
Balance at the end of the period | $ (292) | $ (307) | $ (292) | $ (307)

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