XML 161 R114.htm IDEA: XBRL DOCUMENT
v3.25.4

Derivative Financial Instruments and Off-balance Sheet Financial Instruments - Schedule of OTC Cash and Securities Collateral Pledged (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Derivative Financial Instruments and Off-balance sheet Financial Instruments |  |
Pledged by the Company | $ 18 |
Pledged to the Company | 0 |
Collateral posted under MNAs for contracts containing credit-risk contingent features | $ 14 | $ 0

X
- Definition This element represents cash and securities pledged as collateral from counterparties. + References No definition available. + Details
Name: | all_CashAndSecuritiesPledgedAsCollateralFromCounterparties
Namespace Prefix: | all_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | all_DerivativeFinancialInstrumentsAndOffBalanceSheetFinancialInstrumentsDisclosureAbstract
Namespace Prefix: | all_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents securities pledged to counterparties as collateral for credit exposure. + References No definition available. + Details
Name: | all_SecuritiesPledgedAsCollateralToCounterparties
Namespace Prefix: | all_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 185 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-185 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4H -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H + Details
Name: | us-gaap_CollateralAlreadyPostedAggregateFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant