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STOCK (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
May 20, 1999
Preferred Shares        
Preferred Stock, Shares Authorized 5,000,000us-gaap_PreferredStockSharesAuthorized 5,000,000us-gaap_PreferredStockSharesAuthorized    
Preferred stock, shares available for issuance 2,000,000kr_PreferredStockSharesAvailable      
Preferred shares, per share (in dollars per share) $ 100us-gaap_PreferredStockParOrStatedValuePerShare $ 100us-gaap_PreferredStockParOrStatedValuePerShare    
Common Shares        
Common shares, shares authorized 1,000,000,000us-gaap_CommonStockSharesAuthorized 1,000,000,000us-gaap_CommonStockSharesAuthorized    
Common shares, par per share (in dollars per share) $ 1us-gaap_CommonStockParOrStatedValuePerShare $ 1us-gaap_CommonStockParOrStatedValuePerShare    
Common stock, amendment in authorized shares       2,000,000,000kr_CommonStockChangeInAuthorizedShares
Common Stock Repurchase Program        
Open market purchases under repurchase programs $ 1,129us-gaap_TreasuryStockValueAcquiredCostMethod $ 338us-gaap_TreasuryStockValueAcquiredCostMethod $ 1,165us-gaap_TreasuryStockValueAcquiredCostMethod  
Common stock repurchased from stock option proceeds $ 154kr_StockOptionsAndRestrictedStockExchangedValue $ 271kr_StockOptionsAndRestrictedStockExchangedValue $ 96kr_StockOptionsAndRestrictedStockExchangedValue