Name:	all_LongTermDebtMaturitiesRepaymentsOfPrincipalDueAfterFiveYearsThroughTenYears
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of long-term debt due after one year through five years following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	all_LongTermDebtMaturitiesRepaymentsOfPrincipalDueAfterOneYearThroughFiveYears
Namespace Prefix:	all_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of long-term debt due after ten years through twenty years following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	all_LongTermDebtMaturitiesRepaymentsOfPrincipalDueAfterTenYearsThroughTwentyYears
Namespace Prefix:	all_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of long-term debt due after twenty years following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	all_LongTermDebtMaturitiesRepaymentsOfPrincipalDueAfterTwentyYears
Namespace Prefix:	all_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Article 5

Name:	us-gaap_DebtCurrent
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

No definition available.