COMMITMENTS AND CONTINGENCIES (Details) (Ralphs Grocery Company and Subsidiaries tax litigation, USD $) In Millions, unless otherwise specified	3 Months Ended
May 21, 2011
Ralphs Grocery Company and Subsidiaries tax litigation
Commitments and Contingencies
Maximum period of filing the appeal (in days)	90
Estimated liability upon an adverse decision	$ 527

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant