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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 4 Months Ended 12 Months Ended
Feb. 28, 2015
Nov. 29, 2014
Sep. 06, 2014
Feb. 22, 2014
Nov. 30, 2013
Sep. 07, 2013
Feb. 23, 2013
Dec. 01, 2012
Sep. 08, 2012
Jun. 14, 2014
Jun. 15, 2013
Jun. 16, 2012
Feb. 28, 2015
Segment
Feb. 22, 2014
Feb. 23, 2013
Significant Accounting Policies [Line Items]                              
Number of retail operating segments                         5svu_NumberOfRetailOperatingSegments    
Fiscal Period Duration 91 days 84 days 84 days 84 days 84 days 84 days 84 days 84 days 84 days 112 days 112 days 112 days 371 days 364 days 364 days
Net book overdrafts $ 145us-gaap_BankOverdrafts     $ 134us-gaap_BankOverdrafts                 $ 145us-gaap_BankOverdrafts $ 134us-gaap_BankOverdrafts  
Allowance for losses on receivables 18us-gaap_AllowanceForDoubtfulAccountsReceivable     19us-gaap_AllowanceForDoubtfulAccountsReceivable                 18us-gaap_AllowanceForDoubtfulAccountsReceivable 19us-gaap_AllowanceForDoubtfulAccountsReceivable  
Bad debt expense                         6us-gaap_ProvisionForLoanAndLeaseLosses 16us-gaap_ProvisionForLoanAndLeaseLosses 11us-gaap_ProvisionForLoanAndLeaseLosses
Percentage of inventory valued under LIFO 55.00%us-gaap_PercentageOfLIFOInventory     57.00%us-gaap_PercentageOfLIFOInventory                 55.00%us-gaap_PercentageOfLIFOInventory 57.00%us-gaap_PercentageOfLIFOInventory  
Percentage of LIFO inventory valued under replacement cost method 5.00%svu_PercentageOfLastInFirstOutInventoryValuedUnderReplacementCostMethod     5.00%svu_PercentageOfLastInFirstOutInventoryValuedUnderReplacementCostMethod                 5.00%svu_PercentageOfLastInFirstOutInventoryValuedUnderReplacementCostMethod 5.00%svu_PercentageOfLastInFirstOutInventoryValuedUnderReplacementCostMethod  
Percentage of LIFO inventory valued under retail inventory method and weighted average 50.00%svu_PercentageOfLastInFirstOutInventoryValuedUnderRetailInventoryMethodAndWeightedAverage     52.00%svu_PercentageOfLastInFirstOutInventoryValuedUnderRetailInventoryMethodAndWeightedAverage                 50.00%svu_PercentageOfLastInFirstOutInventoryValuedUnderRetailInventoryMethodAndWeightedAverage 52.00%svu_PercentageOfLastInFirstOutInventoryValuedUnderRetailInventoryMethodAndWeightedAverage  
Percentage of FIFO inventory valued under cost, weighted average cost and retail inventory method 26.00%svu_PercentageOfFirstInFirstOutInventoryValuedUnderCostWeightedAverageCostAndRetailInventoryMethod     25.00%svu_PercentageOfFirstInFirstOutInventoryValuedUnderCostWeightedAverageCostAndRetailInventoryMethod                 26.00%svu_PercentageOfFirstInFirstOutInventoryValuedUnderCostWeightedAverageCostAndRetailInventoryMethod 25.00%svu_PercentageOfFirstInFirstOutInventoryValuedUnderCostWeightedAverageCostAndRetailInventoryMethod  
Percentage Of First In First Out Inventory Valued Under Replacement Cost Method 19.00%svu_PercentageOfFirstInFirstOutInventoryValuedUnderReplacementCostMethod     18.00%svu_PercentageOfFirstInFirstOutInventoryValuedUnderReplacementCostMethod                 19.00%svu_PercentageOfFirstInFirstOutInventoryValuedUnderReplacementCostMethod 18.00%svu_PercentageOfFirstInFirstOutInventoryValuedUnderReplacementCostMethod  
Cost of sales decreased due to certain LIFO layers were reduced                           14us-gaap_EffectOfLIFOInventoryLiquidationOnIncome 6us-gaap_EffectOfLIFOInventoryLiquidationOnIncome
Value increase in inventory by changing the method from LIFO to FIFO 211svu_EstimatedIncreaseInValueOfInventoryDueToChangeInValuationMethod     202svu_EstimatedIncreaseInValueOfInventoryDueToChangeInValuationMethod                 211svu_EstimatedIncreaseInValueOfInventoryDueToChangeInValuationMethod 202svu_EstimatedIncreaseInValueOfInventoryDueToChangeInValuationMethod  
Impairment of long-lived assets related to store closures                             8us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Discount rate 3.80%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate     4.65%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate     4.25%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate           3.80%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate 4.65%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate 4.25%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Discount on self-insurance reserve 6svu_DiscountOnSelfInsuranceReserve     7svu_DiscountOnSelfInsuranceReserve                 6svu_DiscountOnSelfInsuranceReserve 7svu_DiscountOnSelfInsuranceReserve  
Cash proceeds from the issuance of shares                         7us-gaap_ProceedsFromIssuanceOfCommonStock 177us-gaap_ProceedsFromIssuanceOfCommonStock 0us-gaap_ProceedsFromIssuanceOfCommonStock
Reclassification of unrecognized tax benefits and other tax credits against deferred tax assets                         1us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability    
Self Insurance, Receivables 9svu_SelfInsuranceReceivables     18svu_SelfInsuranceReceivables                 9svu_SelfInsuranceReceivables 18svu_SelfInsuranceReceivables  
Symphony Investors                              
Significant Accounting Policies [Line Items]                              
Percentage on issued and outstanding common stock 30.00%svu_PercentageOfIssuedAndOutstandingStockUnderTenderOffer
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		                       30.00%svu_PercentageOfIssuedAndOutstandingStockUnderTenderOffer
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Common stock Purchase price (usd per share) $ 4.00svu_PriceToAcquireStockUnderTenderOffer
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		                       $ 4.00svu_PriceToAcquireStockUnderTenderOffer
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Validly tendered shares (shares)                         12svu_NumberOfSharesValidlyTendered
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Percentage on issued and outstanding common stock                         5.50%svu_PercentageOfIssuedAndOutstandingSharesValidlyTendered
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Tender offer expiration date                         Mar. 20, 2013    
Additional common stock issued (shares)                         42us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Percentage of outstanding shares 19.90%svu_PercentageOfAggregateIssuanceOfPrimarySharesUnderTenderOffer
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		                       19.90%svu_PercentageOfAggregateIssuanceOfPrimarySharesUnderTenderOffer
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Tender offer price per share (usd per share)                         $ 4.00svu_TenderOfferPricePerShare
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Cash proceeds from the issuance of shares                         170us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Ownership percentage after share issuance 21.20%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		                       21.20%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_CounterpartyNameAxis
= svu_SymphonyInvestorsMember		    
Asset under Construction                              
Significant Accounting Policies [Line Items]                              
Interest capitalized during period                         1us-gaap_InterestCostsCapitalized
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetUnderConstructionMember		 1us-gaap_InterestCostsCapitalized
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetUnderConstructionMember		 4us-gaap_InterestCostsCapitalized
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetUnderConstructionMember
Retail Food                              
Significant Accounting Policies [Line Items]                              
Number of geographic markets (markets)                         5svu_NumberOfGeographicMarket
/ us-gaap_StatementBusinessSegmentsAxis
= svu_RetailFoodMember		    
Corporate                              
Significant Accounting Policies [Line Items]                              
Number of individual corporate stores (stores)                         28svu_NumberOfIndividualCorporateStores
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		    
Number of Distribution Centers Without Corporate Stores                         2svu_NumberofDistributionCentersWithoutCorporateStores
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember		    
Retail Food and Save-A-Lot                              
Significant Accounting Policies [Line Items]                              
Retail food advertising expenses, net of cooperative adverting reimbursements                         69us-gaap_AdvertisingExpense
/ us-gaap_StatementBusinessSegmentsAxis
= svu_RetailFoodAndSaveaLotMember		 63us-gaap_AdvertisingExpense
/ us-gaap_StatementBusinessSegmentsAxis
= svu_RetailFoodAndSaveaLotMember		 86us-gaap_AdvertisingExpense
/ us-gaap_StatementBusinessSegmentsAxis
= svu_RetailFoodAndSaveaLotMember
Save-A-Lot                              
Significant Accounting Policies [Line Items]                              
Number of geographic markets (markets)                         13svu_NumberOfGeographicMarket
/ us-gaap_StatementBusinessSegmentsAxis
= svu_SaveLotMember		    
Impairment of long-lived assets related to store closures                             $ 16us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
/ us-gaap_StatementBusinessSegmentsAxis
= svu_SaveLotMember
Number of non-strategic stores closed (stores)                             22svu_NumberOfStoresClosed
/ us-gaap_StatementBusinessSegmentsAxis
= svu_SaveLotMember
Minimum                              
Significant Accounting Policies [Line Items]                              
Remaining Lease Term                         1 year    
Discount rate 0.30%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		     0.30%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		     0.40%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		           0.30%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		 0.30%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		 0.40%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Minimum | Building Improvements                              
Significant Accounting Policies [Line Items]                              
Estimated useful life                         10 years    
Minimum | Equipment                              
Significant Accounting Policies [Line Items]                              
Estimated useful life                         3 years    
Maximum                              
Significant Accounting Policies [Line Items]                              
Remaining Lease Term                         15 years    
Discount rate 5.10%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		     5.10%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		     5.10%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		           5.10%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		 5.10%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		 5.10%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Maximum | Building Improvements                              
Significant Accounting Policies [Line Items]                              
Estimated useful life                         40 years    
Maximum | Equipment                              
Significant Accounting Policies [Line Items]                              
Estimated useful life                         10 years