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Schedule III - Supplementary Insurance Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | $ 4,784 | $ 4,191 | $ 3,954
Reserves for claims and claims expense, contract benefits and contractholder funds | 58,002 | 58,308 | 57,749
Unearned premiums | 14,510 | 13,473 | 12,583
Premium revenue and contract charges | 36,513 | 34,678 | 33,582
Net investment income | 3,240 | 3,401 | 3,042
Claims and claims expense, contract benefits and interest credited to contractholders | 25,405 | 24,460 | 24,743
Amortization of deferred policy acquisition costs | 5,222 | 4,784 | 4,550
Other operating costs and expenses | 6,566 | 5,634 | 5,461
Premiums written (excluding life) | 35,966 | 33,661 | 32,455
Intersegment Eliminations (2) |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 0 | 0 | 0
Reserves for claims and claims expense, contract benefits and contractholder funds | 0 | 0 | 0
Unearned premiums | 0 | 0 | 0
Premium revenue and contract charges | (122) | (110) | (105)
Net investment income | 0 | 0 | 0
Claims and claims expense, contract benefits and interest credited to contractholders | (7) | (6) | (5)
Amortization of deferred policy acquisition costs | 0 | 0 | 0
Other operating costs and expenses | (115) | (104) | (100)
Premiums written (excluding life) | 0 | 0 | 0
Allstate Protection | Operating Segments |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 1,618 | 1,510 | 1,432
Reserves for claims and claims expense, contract benefits and contractholder funds | 25,495 | 24,336 | 23,263
Unearned premiums | 11,953 | 11,409 | 11,160
Premium revenue and contract charges | 32,950 | 31,433 | 30,727
Claims and claims expense, contract benefits and interest credited to contractholders | 22,348 | 21,388 | 21,802
Amortization of deferred policy acquisition costs | 4,475 | 4,205 | 4,053
Other operating costs and expenses | 4,522 | 4,239 | 4,083
Premiums written (excluding life) | 33,555 | 31,648 | 30,888
Discontinued Lines and Coverages | Operating Segments |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 0 | 0 | 0
Reserves for claims and claims expense, contract benefits and contractholder funds | 1,864 | 1,893 | 1,953
Unearned premiums | 0 | 0 | 0
Premium revenue and contract charges | 0 | 0 | 0
Claims and claims expense, contract benefits and interest credited to contractholders | 87 | 96 | 105
Amortization of deferred policy acquisition costs | 0 | 0 | 0
Other operating costs and expenses | 3 | 3 | 2
Premiums written (excluding life) | 0 | 0 | 3
Property-Liability | Operating Segments |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 1,618 | 1,510 | 1,432
Reserves for claims and claims expense, contract benefits and contractholder funds | 27,359 | 26,229 | 25,216
Unearned premiums | 11,953 | 11,409 | 11,160
Premium revenue and contract charges | 32,950 | 31,433 | 30,727
Net investment income | 1,464 | 1,478 | 1,253
Claims and claims expense, contract benefits and interest credited to contractholders | 22,435 | 21,484 | 21,907
Amortization of deferred policy acquisition costs | 4,475 | 4,205 | 4,053
Other operating costs and expenses | 4,525 | 4,242 | 4,085
Premiums written (excluding life) | 33,555 | 31,648 | 30,891
Service Businesses | Operating Segments |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 1,290 | 954 | 756
Reserves for claims and claims expense, contract benefits and contractholder funds | 64 | 96 | 34
Unearned premiums | 2,546 | 2,052 | 1,411
Premium revenue and contract charges | 1,220 | 977 | 685
Net investment income | 27 | 16 | 13
Claims and claims expense, contract benefits and interest credited to contractholders | 350 | 369 | 258
Amortization of deferred policy acquisition costs | 463 | 296 | 214
Other operating costs and expenses | 603 | 565 | 283
Premiums written (excluding life) | 1,431 | 1,094 | 709
Allstate Life | Operating Segments |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 1,300 | 1,152 | 1,200
Reserves for claims and claims expense, contract benefits and contractholder funds | 10,333 | 10,244 | 10,042
Unearned premiums | 3 | 4 | 4
Premium revenue and contract charges | 1,315 | 1,280 | 1,250
Net investment income | 505 | 489 | 482
Claims and claims expense, contract benefits and interest credited to contractholders | 1,094 | 1,047 | 1,027
Amortization of deferred policy acquisition costs | 132 | 134 | 131
Other operating costs and expenses | 364 | 344 | 332
Premiums written (excluding life) | 0 | 0 | 0
Allstate Benefits | Operating Segments |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 549 | 541 | 526
Reserves for claims and claims expense, contract benefits and contractholder funds | 1,905 | 1,869 | 1,821
Unearned premiums | 8 | 8 | 8
Premium revenue and contract charges | 1,135 | 1,084 | 1,011
Net investment income | 77 | 72 | 71
Claims and claims expense, contract benefits and interest credited to contractholders | 630 | 599 | 545
Amortization of deferred policy acquisition costs | 145 | 142 | 145
Other operating costs and expenses | 278 | 261 | 236
Premiums written (excluding life) | 980 | 919 | 855
Allstate Annuities | Operating Segments |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 27 | 34 | 40
Reserves for claims and claims expense, contract benefits and contractholder funds | 18,341 | 19,870 | 20,636
Unearned premiums | 0 | 0 | 0
Premium revenue and contract charges | 15 | 14 | 14
Net investment income | 1,096 | 1,305 | 1,181
Claims and claims expense, contract benefits and interest credited to contractholders | 903 | 967 | 1,011
Amortization of deferred policy acquisition costs | 7 | 7 | 7
Other operating costs and expenses | 31 | 34 | 31
Premiums written (excluding life) | 0 | 0 | 0
Corporate and Other | Operating Segments |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 0 | 0 | 0
Reserves for claims and claims expense, contract benefits and contractholder funds | 0 | 0 | 0
Unearned premiums | 0 | 0 | 0
Premium revenue and contract charges | 0 | 0 | 0
Net investment income | 71 | 41 | 42
Claims and claims expense, contract benefits and interest credited to contractholders | 0 | 0 | 0
Amortization of deferred policy acquisition costs | 0 | 0 | 0
Other operating costs and expenses | 880 | 292 | 594
Premiums written (excluding life) | $ 0 | $ 0 | $ 0

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- Definition Amount of reserves for future policy claims payable and loss expenses to be incurred, and the liability as of the balance sheet date to the policyholders for deposits held under the terms of insurance contracts. + References No definition available. + Details
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- Definition Amount of premium revenue earned. Also includes an amount that an insurer adds to a policy's premium, or deducts from a policy's cash value or contract holder's account, as compensation for services rendered (may include fees), after subtracting any amounts ceded to another insurer. + References No definition available. + Details
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