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Condensed Consolidated Statements of Stockholders' Deficit (Parenthetical) (USD $)
In Millions, unless otherwise specified
 9 Months Ended
Nov. 29, 2014
Nov. 30, 2013
Other comprehensive income, tax $ (17)us-gaap_OtherComprehensiveIncomeLossTax $ 28us-gaap_OtherComprehensiveIncomeLossTax
Divestiture of New Albertsons, Inc.'s pension accumulated comprehensive loss, tax amount   31svu_DivestitureOfBusinessesAccumulatedOtherComprehensiveIncomeLossTaxPortion
Accumulated Other Comprehensive Loss [Member]    
Other comprehensive income, tax (17)us-gaap_OtherComprehensiveIncomeLossTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember		 28us-gaap_OtherComprehensiveIncomeLossTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Divestiture of New Albertsons, Inc.'s pension accumulated comprehensive loss, tax amount   31svu_DivestitureOfBusinessesAccumulatedOtherComprehensiveIncomeLossTaxPortion
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
SUPERVALU INC. Stockholders Deficit [Member]    
Other comprehensive income, tax (17)us-gaap_OtherComprehensiveIncomeLossTax
/ us-gaap_StatementEquityComponentsAxis
= svu_StockholdersDeficitMember		 28us-gaap_OtherComprehensiveIncomeLossTax
/ us-gaap_StatementEquityComponentsAxis
= svu_StockholdersDeficitMember
Divestiture of New Albertsons, Inc.'s pension accumulated comprehensive loss, tax amount   $ 31svu_DivestitureOfBusinessesAccumulatedOtherComprehensiveIncomeLossTaxPortion
/ us-gaap_StatementEquityComponentsAxis
= svu_StockholdersDeficitMember