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Reserve for Property-Liability Insurance Claims and Claims Expense (Tables) | 12 Months Ended
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Dec. 31, 2017
Reserve for Property-Liability Insurance Claims and Claims Expense |
Activity in the reserve for property-liability insurance claims and claims expense |
Rollforward of reserve for property and casualty insurance claims and claims expense
($ in millions) |  | 2017 |  | 2016 |  | 2015
Balance as of January 1 |  | $ | 25,250 |  |  | $ | 23,869 |  |  | $ | 22,923 |
Less reinsurance recoverables |  | 6,184 |  |  | 5,892 |  |  | 5,694 |
Net balance as of January 1 |  | 19,066 |  |  | 17,977 |  |  | 17,229 |
SquareTrade acquisition as of January 3, 2017 |  | 17 |  |  | — |  |  | — |
Incurred claims and claims expense related to: |  |  |  |  |  |
Current year |  | 22,432 |  |  | 22,238 |  |  | 20,953 |
Prior years |  | (503 | ) |  | (17 | ) |  | 81 |
Total incurred |  | 21,929 |  |  | 22,221 |  |  | 21,034 |
Claims and claims expense paid related to: |  |  |  |  |  |
Current year |  | 14,194 |  |  | 14,222 |  |  | 13,660 |
Prior years |  | 6,964 |  |  | 6,910 |  |  | 6,626 |
Total paid |  | 21,158 |  |  | 21,132 |  |  | 20,286 |
Net balance as of December 31 |  | 19,854 |  |  | 19,066 |  |  | 17,977 |
Plus reinsurance recoverables |  | 6,471 |  |  | 6,184 |  |  | 5,892 |
Balance as of December 31 |  | $ | 26,325 |  |  | $ | 25,250 |  |  | $ | 23,869 |
Incurred and paid claims and claims expense | The information about incurred and paid claims development for the 2013 to 2017 years, and the average annual percentage payout of incurred claims by age as of December 31, 2017, is presented as required supplementary information. Auto insurance – liability coverage
($ in millions, except number of reported claims) |  | Incurred claims and allocated claim adjustment expenses, net of reinsurance |  | IBNR reserves plus expected development on reported claims |  | Cumulative number of reported claims
|  | For the years ended December 31, |  | As of December 31, 2017
|  | (unaudited) |  | (unaudited) |  | (unaudited) |  | (unaudited) |  |  |
Accident year |  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |
2013 |  | $ | 7,461 |  |  | $ | 7,429 |  |  | $ | 7,446 |  |  | $ | 7,387 |  |  | $ | 7,317 |  |  | $ | 513 |  |  | 2,114,149 |
2014 |  | — |  |  | 7,889 |  |  | 7,955 |  |  | 7,882 |  |  | 7,785 |  |  | 951 |  |  | 2,194,476 |
2015 |  | — |  |  | — |  |  | 8,896 |  |  | 8,816 |  |  | 8,721 |  |  | 1,828 |  |  | 2,380,096 |
2016 |  | — |  |  | — |  |  | — |  |  | 9,169 |  |  | 8,926 |  |  | 3,149 |  |  | 2,387,023 |
2017 |  | — |  |  | — |  |  | — |  |  | — |  |  | 8,621 |  |  | 5,465 |  |  | 2,112,379 |
|  |  |  |  |  |  |  | Total |  |  | $ | 41,370 |  |  |  |  |
|  | Cumulative paid claims and allocated claims adjustment expenses, net of reinsurance |  |  |  |
|  | For the years ended December 31, |  |  |  |
|  | (unaudited) |  | (unaudited) |  | (unaudited) |  | (unaudited) |  |  |  |  |  |
Accident year |  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |  |  |  |
2013 |  | $ | 2,955 |  |  | $ | 4,993 |  |  | $ | 5,946 |  |  | $ | 6,493 |  |  | $ | 6,804 |  |  |  |  |
2014 |  | — |  |  | 3,177 |  |  | 5,322 |  |  | 6,265 |  |  | 6,834 |  |  |  |  |
2015 |  | — |  |  | — |  |  | 3,529 |  |  | 5,846 |  |  | 6,893 |  |  |  |  |
2016 |  | — |  |  | — |  |  | — |  |  | 3,491 |  |  | 5,777 |  |  |  |  |
2017 |  | — |  |  | — |  |  | — |  |  | — |  |  | 3,156 |  |  |  |  |
|  |  |  |  |  |  |  | Total |  |  | $ | 29,464 |  |  |  |  |
All outstanding liabilities before 2013, net of reinsurance |  | 1,275 |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance |  | $ | 13,181 |  |  |  |  |
Auto insurance – physical damage coverage
($ in millions, except number of reported claims) |  | Incurred claims and allocated claim adjustment expenses, net of reinsurance |  | IBNR reserves plus expected development on reported claims |  | Cumulative number of reported claims
|  | For the years ended December 31, |  | As of December 31, 2017
|  | (unaudited) |  | (unaudited) |  | (unaudited) |  | (unaudited) |  |  |
Accident year |  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |
2013 |  | $ | 3,894 |  |  | $ | 3,866 |  |  | $ | 3,854 |  |  | $ | 3,844 |  |  | $ | 3,842 |  |  | $ | 1 |  |  | 3,777,287 |
2014 |  | — |  |  | 4,308 |  |  | 4,296 |  |  | 4,270 |  |  | 4,273 |  |  | 3 |  |  | 4,144,310 |
2015 |  | — |  |  | — |  |  | 4,663 |  |  | 4,688 |  |  | 4,676 |  |  | 11 |  |  | 4,388,829 |
2016 |  | — |  |  | — |  |  | — |  |  | 5,136 |  |  | 5,058 |  |  | 19 |  |  | 4,426,714 |
2017 |  | — |  |  | — |  |  | — |  |  | — |  |  | 5,131 |  |  | 278 |  |  | 4,075,755 |
|  |  |  |  |  |  |  | Total |  |  | $ | 22,980 |  |  |  |  |
|  | Cumulative paid claims and allocated claims adjustment expenses, net of reinsurance |  |  |  |
|  | For the years ended December 31, |  |  |  |
|  | (unaudited) |  | (unaudited) |  | (unaudited) |  | (unaudited) |  |  |  |  |  |
Accident year |  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |  |  |  |
2013 |  | $ | 3,718 |  |  | $ | 3,848 |  |  | $ | 3,841 |  |  | $ | 3,841 |  |  | $ | 3,841 |  |  |  |  |
2014 |  | — |  |  | 4,148 |  |  | 4,281 |  |  | 4,273 |  |  | 4,270 |  |  |  |  |
2015 |  | — |  |  | — |  |  | 4,513 |  |  | 4,679 |  |  | 4,665 |  |  |  |  |
2016 |  | — |  |  | — |  |  | — |  |  | 4,895 |  |  | 5,039 |  |  |  |  |
2017 |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,853 |  |  |  |  |
|  |  |  |  |  |  |  | Total |  |  | $ | 22,668 |  |  |  |  |
All outstanding liabilities before 2013, net of reinsurance |  | 9 |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance |  | $ | 321 |  |  |  |  |
Homeowners insurance
($ in millions, except number of reported claims) |  | Incurred claims and allocated claim adjustment expenses, net of reinsurance |  | IBNR reserves plus expected development on reported claims |  | Cumulative number of reported claims
|  | For the years ended December 31, |  | As of December 31, 2017
|  | (unaudited) |  | (unaudited) |  | (unaudited) |  | (unaudited) |  |  |
Accident year |  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |
2013 |  | $ | 3,098 |  |  | $ | 3,170 |  |  | $ | 3,163 |  |  | $ | 3,142 |  |  | $ | 3,121 |  |  | $ | 51 |  |  | 682,873 |
2014 |  | — |  |  | 3,608 |  |  | 3,651 |  |  | 3,653 |  |  | 3,621 |  |  | 88 |  |  | 765,001 |
2015 |  | — |  |  | — |  |  | 3,572 |  |  | 3,622 |  |  | 3,560 |  |  | 158 |  |  | 720,102 |
2016 |  | — |  |  | — |  |  | — |  |  | 3,972 |  |  | 4,001 |  |  | 319 |  |  | 809,045 |
2017 |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,490 |  |  | 1,260 |  |  | 840,254 |
|  |  |  |  |  |  |  | Total |  |  | $ | 18,793 |  |  |  |  |
|  | Cumulative paid claims and allocated claims adjustment expenses, net of reinsurance |  |  |  |
|  | For the years ended December 31, |  |  |  |
|  | (unaudited) |  | (unaudited) |  | (unaudited) |  | (unaudited) |  |  |  |  |  |
Accident year |  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |  |  |  |
2013 |  | $ | 2,288 |  |  | $ | 2,885 |  |  | $ | 2,998 |  |  | $ | 3,045 |  |  | $ | 3,070 |  |  |  |  |
2014 |  | — |  |  | 2,736 |  |  | 3,365 |  |  | 3,481 |  |  | 3,533 |  |  |  |  |
2015 |  | — |  |  | — |  |  | 2,589 |  |  | 3,299 |  |  | 3,402 |  |  |  |  |
2016 |  | — |  |  | — |  |  | — |  |  | 2,950 |  |  | 3,682 |  |  |  |  |
2017 |  | — |  |  | — |  |  | — |  |  | — |  |  | 3,230 |  |  |  |  |
|  |  |  |  |  |  |  | Total |  |  | $ | 16,917 |  |  |  |  |
All outstanding liabilities before 2013, net of reinsurance |  | 173 |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance |  | $ | 2,049 |  |  |  |  |
Average annual percentage payout of incurred claims by age, net of reinsurance |
Average annual percentage payout of incurred claims by age, net of reinsurance, as of December 31, 2017
|  | 1 year |  | 2 years |  | 3 years |  | 4 years |  | 5 years
Auto insurance – physical damage coverage |  | 96.6 | % |  | 3.2 | % |  | (0.2 | )% |  | — | % |  | — | %
Average annual percentage payout of incurred claims by age, net of reinsurance, as of December 31, 2017
|  | 1 year |  | 2 years |  | 3 years |  | 4 years |  | 5 years
Auto insurance – liability coverage |  | 40.2 | % |  | 27.4 | % |  | 12.5 | % |  | 8.0 | % |  | 4.7 | %
Average annual percentage payout of incurred claims by age, net of reinsurance, as of December 31, 2017
|  | 1 year |  | 2 years |  | 3 years |  | 4 years |  | 5 years
Homeowners insurance |  | 74.6 | % |  | 18.6 | % |  | 2.9 | % |  | 1.3 | % |  | 0.7 | %
Reconciliation of the net incurred claims and claims expense development |
Reconciliation of the net incurred and paid claims development tables above to the reserve for property and casualty insurance claims and claims expense
($ in millions) |  | As of December 31, 2017
Net outstanding liabilities: |  |
Allstate Protection |  |
Auto insurance - Liability coverage |  | $ | 13,181 |
Auto insurance - Physical damage coverage |  | 321 |
Homeowners insurance |  | 2,049 |
Other personal lines |  | 1,311 |
Commercial lines |  | 593 |
Service Businesses |  | 86 |
Discontinued Lines and Coverages (1) |  | 1,335 |
Unallocated loss adjustment expenses |  | 978 |
Net reserve for property and casualty insurance claims and claims expense |  | 19,854 |
Reinsurance recoverable: |  |
Allstate Protection |  |
Auto insurance - Liability coverage |  | 5,715 |
Auto insurance - Physical damage coverage |  | — |
Homeowners insurance |  | 23 |
Other personal lines |  | 214 |
Commercial lines |  | 20 |
Service Businesses |  | 10 |
Discontinued Lines and Coverages |  | 485 |
Unallocated loss adjustment expenses |  | 4 |
Total reinsurance recoverable |  | 6,471 |
Gross reserve for property and casualty insurance claims and claims expense |  | $ | 26,325 |
(1) | Discontinued Lines and Coverages includes business in run-off. All of the claims primarily relate to accident years more than 30 years ago. IBNR reserves represent $733 million of the total reserves as of December 31, 2017.

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- Definition Tabular disclosure of the activity in the reserve for settling insured claims and expenses incurred in the claims settlement process for the period. The estimated liability includes the amount of money that will be required for future payments of (a) claims that have been reported to the insurer, (b) claims related to insured events that have occurred but that have not been reported to the insurer as of the date the liability is estimated, and (c) claim adjustment expenses. Claim adjustment expenses include costs incurred in the claim settlement process such as legal fees; outside adjuster fees; and costs to record, process, and adjust claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437 + Details
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- Definition Tabular disclosure of undiscounted information about claims development by accident year for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671311-158438 + Details
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- Definition Tabular disclosure for the reconciliation of claims development to the liability for unpaid claims and claim adjustment expense for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671315-158438 + Details
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- Definition Tabular disclosure of average annual percentage payout of incurred claims by age, after reinsurance, for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671329-158438 + Details
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