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Schedule III - Supplementary Insurance Information | 12 Months Ended
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Dec. 31, 2017
Supplementary Insurance Information [Abstract] |
Schedule III — Supplementary Insurance Information | Schedule III — Supplementary Insurance Information
($ in millions) |  | As of December 31, |  | For the years ended December 31,
Segment |  | Deferred policy acquisition costs |  | Reserves for claims and claims expense, contract benefits and contractholder funds |  | Unearned premiums |  | Premium revenue and contract charges |  | Net investment income (1) |  | Claims and claims expense, contract benefits and interest credited to contractholders |  | Amortization of deferred policy acquisition costs |  | Other operating costs and expenses |  | Premiums written (excluding life)
2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property-Liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allstate Protection |  | $ | 1,510 |  |  | $ | 24,336 |  |  | $ | 11,409 |  |  | $ | 31,433 |  |  |  |  | $ | 21,470 |  |  | $ | 4,205 |  |  | $ | 3,647 |  |  | $ | 31,648 |
Discontinued Lines and Coverages |  | — |  |  | 1,893 |  |  | — |  |  | — |  |  |  |  | 96 |  |  | — |  |  | 3 |  |  | — |
Total Property-Liability |  | 1,510 |  |  | 26,229 |  |  | 11,409 |  |  | 31,433 |  |  | $ | 1,478 |  |  | 21,566 |  |  | 4,205 |  |  | 3,650 |  |  | 31,648 |
Service Businesses (2) |  | 954 |  |  | 96 |  |  | 2,052 |  |  | 977 |  |  | 16 |  |  | 369 |  |  | 296 |  |  | 506 |  |  | 1,094 |
Allstate Life |  | 1,152 |  |  | 10,244 |  |  | 4 |  |  | 1,280 |  |  | 489 |  |  | 1,047 |  |  | 134 |  |  | 240 |  |  | — |
Allstate Benefits |  | 541 |  |  | 1,869 |  |  | 8 |  |  | 1,084 |  |  | 72 |  |  | 599 |  |  | 142 |  |  | 269 |  |  | 919 |
Allstate Annuities |  | 34 |  |  | 19,870 |  |  | — |  |  | 14 |  |  | 1,305 |  |  | 967 |  |  | 7 |  |  | 35 |  |  | — |
Corporate and Other |  | — |  |  | — |  |  | — |  |  | — |  |  | 41 |  |  | — |  |  | — |  |  | 631 |  |  | — |
Intersegment Eliminations (2) |  | — |  |  | — |  |  | — |  |  | (110 | ) |  | — |  |  | (6 | ) |  | — |  |  | (104 | ) |  | — |
Total |  | $ | 4,191 |  |  | $ | 58,308 |  |  | $ | 13,473 |  |  | $ | 34,678 |  |  | $ | 3,401 |  |  | $ | 24,542 |  |  | $ | 4,784 |  |  | $ | 5,227 |  |  | $ | 33,661 |
2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property-Liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allstate Protection |  | $ | 1,432 |  |  | $ | 23,263 |  |  | $ | 11,160 |  |  | $ | 30,727 |  |  |  |  | $ | 21,863 |  |  | $ | 4,053 |  |  | $ | 3,484 |  |  | $ | 30,888 |
Discontinued Lines and Coverages |  | — |  |  | 1,953 |  |  | — |  |  | — |  |  |  |  | 105 |  |  | — |  |  | 2 |  |  | 3 |
Total Property-Liability |  | 1,432 |  |  | 25,216 |  |  | 11,160 |  |  | 30,727 |  |  | $ | 1,253 |  |  | 21,968 |  |  | 4,053 |  |  | 3,486 |  |  | 30,891 |
Service Businesses (2) |  | 756 |  |  | 34 |  |  | 1,411 |  |  | 685 |  |  | 13 |  |  | 258 |  |  | 214 |  |  | 223 |  |  | 709 |
Allstate Life |  | 1,200 |  |  | 10,042 |  |  | 4 |  |  | 1,250 |  |  | 482 |  |  | 1,027 |  |  | 131 |  |  | 226 |  |  | — |
Allstate Benefits |  | 526 |  |  | 1,821 |  |  | 8 |  |  | 1,011 |  |  | 71 |  |  | 545 |  |  | 145 |  |  | 240 |  |  | 855 |
Allstate Annuities |  | 40 |  |  | 20,636 |  |  | — |  |  | 14 |  |  | 1,181 |  |  | 1,011 |  |  | 7 |  |  | 32 |  |  | — |
Corporate and Other |  | — |  |  | — |  |  | — |  |  | — |  |  | 42 |  |  | — |  |  | — |  |  | 324 |  |  | — |
Intersegment Eliminations (2) |  | — |  |  | — |  |  | — |  |  | (105 | ) |  | — |  |  | (5 | ) |  | — |  |  | (100 | ) |  | — |
Total |  | $ | 3,954 |  |  | $ | 57,749 |  |  | $ | 12,583 |  |  | $ | 33,582 |  |  | $ | 3,042 |  |  | $ | 24,804 |  |  | $ | 4,550 |  |  | $ | 4,431 |  |  | $ | 32,455 |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property-Liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allstate Protection |  | $ | 1,410 |  |  | $ | 21,777 |  |  | $ | 10,979 |  |  | $ | 29,748 |  |  |  |  | $ | 20,718 |  |  | $ | 3,933 |  |  | $ | 3,476 |  |  | $ | 30,115 |
Discontinued Lines and Coverages |  | — |  |  | 2,062 |  |  | — |  |  | — |  |  |  |  | 53 |  |  | — |  |  | 2 |  |  | — |
Total Property-Liability |  | 1,410 |  |  | 23,839 |  |  | 10,979 |  |  | 29,748 |  |  | $ | 1,226 |  |  | 20,771 |  |  | 3,933 |  |  | 3,478 |  |  | 30,115 |
Service Businesses (2) |  | 619 |  |  | 30 |  |  | 1,210 |  |  | 603 |  |  | 11 |  |  | 277 |  |  | 169 |  |  | 164 |  |  | 756 |
Allstate Life |  | 1,271 |  |  | 9,895 |  |  | 4 |  |  | 1,223 |  |  | 490 |  |  | 1,031 |  |  | 133 |  |  | 213 |  |  | — |
Allstate Benefits |  | 514 |  |  | 1,760 |  |  | 9 |  |  | 921 |  |  | 71 |  |  | 488 |  |  | 124 |  |  | 222 |  |  | 777 |
Allstate Annuities |  | 47 |  |  | 21,887 |  |  | — |  |  | 14 |  |  | 1,323 |  |  | 1,045 |  |  | 5 |  |  | 37 |  |  | — |
Corporate and Other |  | — |  |  | — |  |  | — |  |  | — |  |  | 35 |  |  | — |  |  | — |  |  | 326 |  |  | — |
Intersegment Eliminations (2) |  | — |  |  | — |  |  | — |  |  | (42 | ) |  | — |  |  | (14 | ) |  | — |  |  | (28 | ) |  | — |
Total |  | $ | 3,861 |  |  | $ | 57,411 |  |  | $ | 12,202 |  |  | $ | 32,467 |  |  | $ | 3,156 |  |  | $ | 23,598 |  |  | $ | 4,364 |  |  | $ | 4,412 |  |  | $ | 31,648 |
(1) | A single investment portfolio supports both Allstate Protection and Discontinued Lines and Coverages segments.
(2) | Includes intersegment premiums and service fees and the related incurred losses and expenses that are eliminated in the consolidated financial statements.

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- Definition The entire disclosure for required supplementary insurance information giving segment detail in support of various balance sheet and income statement captions. The balance sheet information generally is presented as of the date of each audited balance sheet filed, and the income statement information generally is presented for each period for which an audited income statement is required to be filed. Supplementary insurance information table includes segment name; deferred policy acquisition costs; future policy benefits, losses, claims and loss expenses; unearned premiums; other policy claims and benefits payable; premium revenue; net investment income; benefits, claims, losses and settlement expenses; amortization of deferred policy acquisition costs; other operating expenses; and premiums written. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.7-05.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6879921&loc=d3e569147-122900 + Details
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