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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, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
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 | $ 1,156 | $ 881 | $ 1,239 | $ 1,184
Deferred policy acquisition costs and present value of future profits, additions | 194 | 181 | 619 | 583
Deferred policy acquisition costs and present value of future profits, periodic amortization | (192) | (185) | (555) | (519)
Deferred policy acquisition costs and present value of future profits, change included in realized gains | 4 | 1 | 7 | 6
Deferred policy acquisition costs and present value of future profits, foreign currency translation | 1 | (1) | 2 | (2)
Deferred policy acquisition costs and present value of future profits, change in unrealized | (44) | (10) | (193) | (385)
Deferred policy acquisition costs and present value of future profits, ending balance | 1,119 | 867 | 1,119 | 867
P&C |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Deferred policy acquisition costs, beginning balance | 258 | 234 | 238 | 226
Deferred policy acquisition costs, additions | 149 | 132 | 439 | 403
Deferred policy acquisition costs, periodic amortization | (142) | (134) | (413) | (396)
Deferred policy acquisition costs, foreign currency translation | 1 | (1) | 2 | (2)
Deferred policy acquisition costs, ending balance | 266 | 231 | 266 | 231
Annuity and Run-off Long-term Care and Life |  |  |  |
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
Deferred policy acquisition costs, beginning balance | 1,167 | 1,089 | 1,110 | 1,018
Deferred policy acquisition costs, additions | 44 | 48 | 177 | 172
Deferred policy acquisition costs, periodic amortization | (44) | (42) | (122) | (99)
Deferred policy acquisition costs, change included in realized gains | 4 | 1 | 6 | 5
Deferred policy acquisition costs, ending balance | 1,171 | 1,096 | 1,171 | 1,096
Movement in Deferred Sales Inducements [Roll Forward] |  |  |  |
Deferred sales inducements, beginning balance | 103 | 116 | 110 | 119
Deferred sales inducements, additions | 1 | 1 | 3 | 8
Deferred sales inducements, periodic amortization | (4) | (6) | (14) | (17)
Deferred sales inducements, change included in realized gains | 0 | 0 | 1 | 1
Deferred sales inducements, ending balance | 100 | 111 | 100 | 111
Movement in Present Value of Future Insurance Profits [Roll Forward] |  |  |  |
Present value of future profits, beginning balance | 42 | 51 | 46 | 55
Present value of future profits, periodic amortization | (2) | (3) | (6) | (7)
Present value of future profits, ending balance | 40 | 48 | 40 | 48
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 | (414) | (609) | (265) | (234)
Unrealized investment gains (losses), change in unrealized | (44) | (10) | (193) | (385)
Unrealized investment gains (losses), ending balance | (458) | (619) | (458) | (619)
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 | 898 | 647 | 1,001 | 958
Deferred policy acquisition costs and present value of future profits, additions | 45 | 49 | 180 | 180
Deferred policy acquisition costs and present value of future profits, periodic amortization | (50) | (51) | (142) | (123)
Deferred policy acquisition costs and present value of future profits, change included in realized gains | 4 | 1 | 7 | 6
Deferred policy acquisition costs and present value of future profits, change in unrealized | (44) | (10) | (193) | (385)
Deferred policy acquisition costs and present value of future profits, ending balance | 853 | 636 | 853 | 636
Excluding Unrealized Gains | Annuity and Run-off Long-term Care and Life |  |  |  |
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 | 1,312 | 1,256 | 1,266 | 1,192
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 | $ 1,311 | $ 1,255 | $ 1,311 | $ 1,255

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- Definition Total amount of policy acquisition costs capitalized during the income statement period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35755530&loc=d3e11264-158415 + Details
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