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Deferred Policy Acquisition Costs - Progression of deferred policy acquisition costs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward] |  |  |  |
Deferred policy acquisition costs and present value of future profits, beginning balance | $ 818 | $ 1,203 | $ 1,037 | $ 1,682
Deferred policy acquisition costs and present value of future profits, additions | 175 | 232 | 561 | 734
Deferred policy acquisition costs and present value of future profits, periodic amortization | (212) | (227) | (597) | (622)
Deferred policy acquisition costs and present value of future profits, annuity unlocking | (114) | (77) | (114) | (77)
Deferred policy acquisition costs and present value of future profits, change included in realized gains | (2) | 3 | 7 | 6
Deferred policy acquisition costs and present value of future profits, foreign currency translation | 1 | (1) | (1) | (1)
Deferred policy acquisition costs and present value of future profits, change in unrealized | (169) | (169) | (396) | (758)
Deferred policy acquisition costs and present value of future profits, ending balance | 497 | 964 | 497 | 964
P&C |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Deferred policy acquisition costs, beginning balance | 296 | 330 | 322 | 299
Deferred policy acquisition costs, additions | 142 | 188 | 448 | 569
Deferred policy acquisition costs, periodic amortization | (170) | (194) | (500) | (544)
Deferred policy acquisition costs, foreign currency translation | 1 | (1) | (1) | (1)
Deferred policy acquisition costs, ending balance | 269 | 323 | 269 | 323
Annuity and Other |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Deferred policy acquisition costs, beginning balance | 1,342 | 1,373 | 1,303 | 1,285
Deferred policy acquisition costs, additions | 33 | 43 | 112 | 163
Deferred policy acquisition costs, periodic amortization | (39) | (29) | (87) | (63)
Deferred policy acquisition cost, annuity unlocking | (118) | (76) | (118) | (76)
Deferred policy acquisition costs, change included in realized gains | (2) | 3 | 6 | 5
Deferred policy acquisition costs, ending balance | 1,216 | 1,314 | 1,216 | 1,314
Movement in Deferred Sales Inducements [Roll Forward] |  |  |  |
Deferred sales inducements, beginning balance | 73 | 81 | 75 | 86
Deferred sales inducements, additions | 0 | 1 | 1 | 2
Deferred sales inducements, periodic amortization | (2) | (3) | (6) | (10)
Deferred sales inducements, annuity unlocking | 4 | (1) | 4 | (1)
Deferred sales inducements, change included in realized gains | 0 | 0 | 1 | 1
Deferred sales inducements, ending balance | 75 | 78 | 75 | 78
Movement in Present Value of Future Insurance Profits [Roll Forward] |  |  |  |
Present value of future profits, beginning balance | 33 | 38 | 36 | 42
Present value of future profits, periodic amortization | (1) | (1) | (4) | (5)
Present value of future insurance profits, annuity unlocking | 0 | 0 | 0 | 0
Present value of future profits, ending balance | 32 | 37 | 32 | 37
Movement in Unrealized Gains (Losses) Related to Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward] |  |  |  |
Unrealized investment gains (losses), beginning balance | (926) | (619) | (699) | (30)
Unrealized investment gains (losses), change in unrealized | (169) | (169) | (396) | (758)
Unrealized investment gains (losses), ending balance | (1,095) | (788) | (1,095) | (788)
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward] |  |  |  |
Deferred policy acquisition costs and present value of future profits, beginning balance | 522 | 873 | 715 | 1,383
Deferred policy acquisition costs and present value of future profits, additions | 33 | 44 | 113 | 165
Deferred policy acquisition costs and present value of future profits, periodic amortization | (42) | (33) | (97) | (78)
Deferred policy acquisition costs and present value of future profits, annuity unlocking | (114) | (77) | (114) | (77)
Deferred policy acquisition costs and present value of future profits, change included in realized gains | (2) | 3 | 7 | 6
Deferred policy acquisition costs and present value of future profits, change in unrealized | (169) | (169) | (396) | (758)
Deferred policy acquisition costs and present value of future profits, ending balance | 228 | 641 | 228 | 641
Excluding Unrealized Gains | Annuity and Other |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs and Present Value of Future Profits [Roll Forward] |  |  |  |
Deferred policy acquisition costs and present value of future profits, beginning balance | 1,448 | 1,492 | 1,414 | 1,413
Deferred policy acquisition costs and present value of future profits, change in unrealized | 0 | 0 | 0 | 0
Deferred policy acquisition costs and present value of future profits, ending balance | $ 1,323 | $ 1,429 | $ 1,323 | $ 1,429

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