XML 96 R54.htm IDEA: XBRL DOCUMENT
v3.20.1

Investments - Carrying value for limited partnership interests (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | $ 7,087 | $ 8,078
EMA limited partnerships |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 5,370 | 6,264
Limited partnership interests |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 1,717 | 1,814
Private equity |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 5,781 | 6,131
Private equity | EMA limited partnerships |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 4,204 | 4,463
Private equity | Limited partnership interests |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 1,577 | 1,668
Other investments |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 216 | 906
Other investments | EMA limited partnerships |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 212 | 902
Other investments | Limited partnership interests |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 4 | 4
Real estate |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 1,090 | 1,041
Real estate | EMA limited partnerships |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | 954 | 899
Real estate | Limited partnership interests |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Limited partnership interests | $ 136 | $ 142

X
- Definition Amount of investment in equity method investee and investment in and advance to affiliate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_EquityMethodInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=srt_PartnershipInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=all_PrivateEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_RealEstateLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |