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Deferred Policy Acquisition Costs (Tables) | 12 Months Ended
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Dec. 31, 2017
Deferred Policy Acquisition Costs Disclosures [Abstract] |
Deferred Policy Acquisition Costs Details | A progression of deferred policy acquisition costs is presented below (in millions):
| P&C |  |  | Annuity and Run-off Long-term Care and Life |  |  |
| Deferred |  |  | Deferred |  | Sales |  |  |  |  |  |  |  |  |  |  | Consolidated
| Costs |  |  | Costs |  | Inducements |  | PVFP |  | Subtotal |  | Unrealized (*) |  | Total |  |  | Total
Balance at December 31, 2014 | $ | 221 |  |  |  | $ | 925 |  |  | $ | 132 |  |  | $ | 74 |  |  | $ | 1,131 |  |  | $ | (531 | ) |  | $ | 600 |  |  |  | $ | 821 |
Additions | 519 |  |  |  | 224 |  |  | 11 |  |  | — |  |  | 235 |  |  | — |  |  | 235 |  |  |  | 754 |
Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Periodic amortization | (511 | ) |  |  | (162 | ) |  | (26 | ) |  | (11 | ) |  | (199 | ) |  | — |  |  | (199 | ) |  |  | (710 | )
Annuity unlocking | — |  |  |  | 31 |  |  | 4 |  |  | — |  |  | 35 |  |  | — |  |  | 35 |  |  |  | 35 |
Included in realized gains | — |  |  |  | 8 |  |  | 1 |  |  | — |  |  | 9 |  |  | — |  |  | 9 |  |  |  | 9 |
Sale of subsidiaries | — |  |  |  | (8 | ) |  | (3 | ) |  | (8 | ) |  | (19 | ) |  | — |  |  | (19 | ) |  |  | (19 | )
Foreign currency translation | (3 | ) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  | (3 | )
Change in unrealized | — |  |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 297 |  |  | 297 |  |  |  | 297 |
Balance at December 31, 2015 | 226 |  |  |  | 1,018 |  |  | 119 |  |  | 55 |  |  | 1,192 |  |  | (234 | ) |  | 958 |  |  |  | 1,184 |
Additions | 535 |  |  |  | 230 |  |  | 9 |  |  | — |  |  | 239 |  |  | — |  |  | 239 |  |  |  | 774 |
Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Periodic amortization | (520 | ) |  |  | (169 | ) |  | (24 | ) |  | (9 | ) |  | (202 | ) |  | — |  |  | (202 | ) |  |  | (722 | )
Annuity unlocking | — |  |  |  | 25 |  |  | 4 |  |  | — |  |  | 29 |  |  | — |  |  | 29 |  |  |  | 29 |
Included in realized gains | — |  |  |  | 6 |  |  | 2 |  |  | — |  |  | 8 |  |  | — |  |  | 8 |  |  |  | 8 |
Foreign currency translation | (3 | ) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  | (3 | )
Change in unrealized | — |  |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (31 | ) |  | (31 | ) |  |  | (31 | )
Balance at December 31, 2016 | 238 |  |  |  | 1,110 |  |  | 110 |  |  | 46 |  |  | 1,266 |  |  | (265 | ) |  | 1,001 |  |  |  | 1,239 |
Additions | 588 |  |  |  | 225 |  |  | 4 |  |  | — |  |  | 229 |  |  | — |  |  | 229 |  |  |  | 817 |
Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Periodic amortization | (556 | ) |  |  | (161 | ) |  | (19 | ) |  | (8 | ) |  | (188 | ) |  | — |  |  | (188 | ) |  |  | (744 | )
Annuity unlocking | — |  |  |  | 34 |  |  | 6 |  |  | 1 |  |  | 41 |  |  | — |  |  | 41 |  |  |  | 41 |
Included in realized gains | — |  |  |  | 9 |  |  | 1 |  |  | — |  |  | 10 |  |  | — |  |  | 10 |  |  |  | 10 |
Foreign currency translation | — |  |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  | — |
Other | — |  |  |  | — |  |  | — |  |  | 10 |  |  | 10 |  |  | — |  |  | 10 |  |  |  | 10 |
Change in unrealized | — |  |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (157 | ) |  | (157 | ) |  |  | (157 | )
Balance at December 31, 2017 | $ | 270 |  |  |  | $ | 1,217 |  |  | $ | 102 |  |  | $ | 49 |  |  | $ | 1,368 |  |  | $ | (422 | ) |  | $ | 946 |  |  |  | $ | 1,216 |
(*) | Unrealized adjustments to DPAC includes net unrealized gains/losses on securities and net unrealized gains/losses on cash flow hedges.

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