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Schedule III - Supplementary Insurance Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | $ 4,700 | $ 4,699 | $ 4,784
Reserves for claims and claims expense, contract benefits and contractholder funds | 57,591 | 57,704 | 58,002
Unearned premiums | 15,949 | 15,343 | 14,510
Premium revenue and contract charges | 39,517 | 38,577 | 36,513
Net investment income | 2,853 | 3,159 | 3,240
Claims and claims expense, contract benefits and interest credited to contractholders | 24,882 | 26,655 | 25,405
Amortization of deferred policy acquisition costs | 5,630 | 5,533 | 5,222
Other operating costs and expenses | 7,324 | 6,404 | 6,566
Premiums written (excluding life) | 38,584 | 37,942 | 35,966
Intersegment Eliminations |  |  |
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 | (147) | (154) | (122)
Net investment income | 0 | 0 | 0
Claims and claims expense, contract benefits and interest credited to contractholders | (11) | (9) | (7)
Amortization of deferred policy acquisition costs | 0 | 0 | 0
Other operating costs and expenses | (136) | (145) | (115)
Premiums written (excluding life) | 0 | 0 | 0
Allstate Protection | Other revenue |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 1,608 | 1,624 | 1,618
Reserves for claims and claims expense, contract benefits and contractholder funds | 25,679 | 25,843 | 25,495
Unearned premiums | 12,772 | 12,567 | 11,953
Premium revenue and contract charges | 35,580 | 34,843 | 32,950
Claims and claims expense, contract benefits and interest credited to contractholders | 21,485 | 23,517 | 22,348
Amortization of deferred policy acquisition costs | 4,642 | 4,649 | 4,475
Other operating costs and expenses | 5,623 | 4,506 | 4,522
Premiums written (excluding life) | 35,768 | 35,419 | 33,555
Discontinued Lines and Coverages | Other revenue |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 0 | 0 | 0
Reserves for claims and claims expense, contract benefits and contractholder funds | 1,888 | 1,818 | 1,864
Unearned premiums | 0 | 0 | 0
Premium revenue and contract charges | 0 | 0 | 0
Claims and claims expense, contract benefits and interest credited to contractholders | 141 | 105 | 87
Amortization of deferred policy acquisition costs | 0 | 0 | 0
Other operating costs and expenses | 3 | 3 | 3
Premiums written (excluding life) | 0 | 0 | 0
Property and casualty | Other revenue |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 1,608 | 1,624 | 1,618
Reserves for claims and claims expense, contract benefits and contractholder funds | 27,567 | 27,661 | 27,359
Unearned premiums | 12,772 | 12,567 | 11,953
Premium revenue and contract charges | 35,580 | 34,843 | 32,950
Net investment income | 1,421 | 1,533 | 1,464
Claims and claims expense, contract benefits and interest credited to contractholders | 21,626 | 23,622 | 22,435
Amortization of deferred policy acquisition costs | 4,642 | 4,649 | 4,475
Other operating costs and expenses | 5,626 | 4,509 | 4,525
Premiums written (excluding life) | 35,768 | 35,419 | 33,555
Protection Services | Other revenue |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 1,696 | 1,449 | 1,290
Reserves for claims and claims expense, contract benefits and contractholder funds | 43 | 51 | 64
Unearned premiums | 3,167 | 2,765 | 2,546
Premium revenue and contract charges | 1,640 | 1,387 | 1,220
Net investment income | 44 | 42 | 27
Claims and claims expense, contract benefits and interest credited to contractholders | 386 | 363 | 350
Amortization of deferred policy acquisition costs | 658 | 543 | 463
Other operating costs and expenses | 760 | 838 | 603
Premiums written (excluding life) | 1,890 | 1,535 | 1,431
Allstate Life | Other revenue |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 909 | 1,079 | 1,300
Reserves for claims and claims expense, contract benefits and contractholder funds | 10,768 | 10,541 | 10,333
Unearned premiums | 3 | 3 | 3
Premium revenue and contract charges | 1,340 | 1,343 | 1,315
Net investment income | 502 | 514 | 505
Claims and claims expense, contract benefits and interest credited to contractholders | 1,293 | 1,154 | 1,094
Amortization of deferred policy acquisition costs | 149 | 173 | 132
Other operating costs and expenses | 335 | 356 | 364
Premiums written (excluding life) | 0 | 0 | 0
Allstate Benefits | Other revenue |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 470 | 527 | 549
Reserves for claims and claims expense, contract benefits and contractholder funds | 1,885 | 1,950 | 1,905
Unearned premiums | 7 | 8 | 8
Premium revenue and contract charges | 1,094 | 1,145 | 1,135
Net investment income | 78 | 83 | 77
Claims and claims expense, contract benefits and interest credited to contractholders | 549 | 635 | 630
Amortization of deferred policy acquisition costs | 177 | 161 | 145
Other operating costs and expenses | 323 | 285 | 278
Premiums written (excluding life) | 926 | 988 | 980
Allstate Annuities | Other revenue |  |  |
Supplementary Insurance Information |  |  |
Deferred policy acquisition costs | 17 | 20 | 27
Reserves for claims and claims expense, contract benefits and contractholder funds | 17,328 | 17,501 | 18,341
Unearned premiums | 0 | 0 | 0
Premium revenue and contract charges | 10 | 13 | 15
Net investment income | 761 | 917 | 1,096
Claims and claims expense, contract benefits and interest credited to contractholders | 1,039 | 890 | 903
Amortization of deferred policy acquisition costs | 4 | 7 | 7
Other operating costs and expenses | 27 | 30 | 31
Premiums written (excluding life) | 0 | 0 | 0
Corporate and Other | Other revenue |  |  |
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 | 47 | 70 | 71
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 | 389 | 531 | 880
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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