XML 127 R108.htm IDEA: XBRL DOCUMENT
v3.19.1

Reserve for Property-Liability Insurance Claims and Claims Expense - Reconciliation of total claims and claims expense incurred and paid by coverage (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Increase (decrease) in claims and claims expense |  |  |
Incurred | $ 22,778 | $ 21,847 | $ 22,160
Paid | (22,364) | $ (21,076) | $ (21,071)
Claims incurred and paid from before 2014 |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | (68) |  |
Paid | (398) |  |
Auto insurance - liability coverage |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 8,413 |  |
Paid | (7,535) |  |
Auto insurance - physical damage coverage |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 5,088 |  |
Paid | (5,134) |  |
Homeowners |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 4,817 |  |
Paid | (4,714) |  |
Auto and Homeowners Insurance |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 18,318 |  |
Paid | (17,383) |  |
Other personal lines |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 1,081 |  |
Paid | (1,055) |  |
Commercial lines |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 545 |  |
Paid | (369) |  |
Service Businesses |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 313 |  |
Paid | (325) |  |
Unallocated loss adjustment expenses (“ULAE”) |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 2,479 |  |
Paid | (2,574) |  |
Other |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 37 |  |
Paid | (169) |  |
Discontinued Lines and Coverages |  |  |
Increase (decrease) in claims and claims expense |  |  |
Incurred | 73 |  |
Paid | $ (91) |  |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_CausesOfIncreaseDecreaseInLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred and costs incurred in the claim settlement process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437 + Details
Name: | us-gaap_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after effects of reinsurance, of payments to settle insured claims and pay costs incurred in the claims settlement process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
Name: | us-gaap_PaymentsForLossesAndLossAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ShortdurationInsuranceContractsAccidentYearAxis=all_ShortdurationInsuranceContractsAccidentYearBefore2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=all_AutoInsuranceLiabilityCoverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=all_AutoInsurancePhysicalDamageCoverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=all_HomeOwnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=all_AutoandHomeownersInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=all_OtherPersonalLinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=all_ServiceBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=all_UnallocatedLossAdjustmentExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_OtherInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=all_DiscontinuedLinesAndCoveragesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |