Loss Contingency, Data Breach, Number of Incidents

No definition available.

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Namespace Prefix:	aci_
Data Type:	xbrli:integerItemType
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- 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

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- Definition

Number of claims dismissed.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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COMMITMENTS AND CONTINGENCIES AND OFF BALANCE SHEET ARRANGEMENTS - Legal Contingencies (Details) $ in Millions		9 Months Ended	12 Months Ended
	Aug. 29, 2018 claim	Nov. 30, 2019 USD ($) claim lawsuit	Feb. 23, 2019 USD ($) lawsuit store	Jan. 03, 2015 store claim	Feb. 27, 2016 incident
Loss Contingencies [Line Items]
Number of retail food and drug stores \| store			2,269
Security breach
Loss Contingencies [Line Items]
Number of retail food and drug stores \| store				800
Number of lawsuits dismissed				2
Security breach \| Threatened litigation
Loss Contingencies [Line Items]
Number of data breach incidents \| incident					2
Safeway's 401(k) Plan \| Pending litigation \| Safeway Inc
Loss Contingencies [Line Items]
Number of lawsuits filed against the company \| lawsuit		2	2
Qui Tam Lawsuits \| Pending litigation
Loss Contingencies [Line Items]
Number of lawsuits filed against the company \| lawsuit		2	2
Qui Tam Lawsuits \| Pending litigation \| Minimum
Loss Contingencies [Line Items]
Damages sought in a lawsuit \| $		$ 100	$ 100
Consolidated cases for multidistrict litigation
Loss Contingencies [Line Items]
Number of lawsuits filed against the company	1,623	2,000
Consolidated cases for multidistrict litigation \| Threatened litigation
Loss Contingencies [Line Items]
Number of new claims filed	10	70
Consolidated cases for multidistrict litigation \| Threatened litigation \| Blackfeet Tribe
Loss Contingencies [Line Items]
Number of new claims filed	1	1