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Financial Instruments (Narrative) (Details)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 29, 2016
USD ($)
contract
Oct. 31, 2015
USD ($)
Oct. 29, 2016
USD ($)
contract
Oct. 31, 2015
USD ($)
Jan. 30, 2016
USD ($)
Derivative [Line Items]          
Cash flow hedges $ 6 $ (2) $ 6 $ (2) $ 2
Derivatives Designated as Hedging Instruments [Member] | Forward Foreign Exchange Contracts [Member]          
Derivative [Line Items]          
Notional value of contracts outstanding 105   105    
Amount of hedge gain (loss) included in AOCI     6    
Increase (decrease) in fair value of hedge positions 1 2 4 1  
Derivatives Designated as Non-Hedging Instruments [Member] | Forward Foreign Exchange Contracts [Member]          
Derivative [Line Items]          
Notional value of contracts outstanding 12   $ 12    
Foreign exchange derivative NOT designated as cash flow hedges, gain (loss) $ 1 $ (3)   $ (1)  
Derivatives Designated as Non-Hedging Instruments [Member] | Foreign Currency Option Contracts [Member]          
Derivative [Line Items]          
Number of contracts outstanding | contract 0   0    
Derivatives Designated as Non-Hedging Instruments [Member] | Diesel Fuel Forward Contracts [Member]          
Derivative [Line Items]          
Number of contracts outstanding | contract 0   0    
Maximum [Member] | Derivatives Designated as Hedging Instruments [Member] | Forward Foreign Exchange Contracts [Member]          
Derivative [Line Items]          
Derivative contracts maturity date     2018-01    
Maximum [Member] | Derivatives Designated as Non-Hedging Instruments [Member] | Forward Foreign Exchange Contracts [Member]          
Derivative [Line Items]          
Derivative contracts maturity date     2016-12