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Financial Instruments (Narrative) (Details)
€ in Millions, $ in Millions
3 Months Ended
Apr. 29, 2017
USD ($)
Apr. 30, 2016
USD ($)
Apr. 29, 2017
EUR (€)
contract
Apr. 29, 2017
USD ($)
contract
Derivatives Designated as Hedging Instruments [Member] | Forward Foreign Exchange Contracts [Member]        
Derivative [Line Items]        
Notional value of contracts outstanding       $ 137
Increase (decrease) in fair value of hedge positions $ (1)      
Derivatives Designated as Non-Hedging Instruments [Member] | Forward Foreign Exchange Contracts [Member]        
Derivative [Line Items]        
Notional value of contracts outstanding       $ 2
Foreign exchange derivative NOT designated as cash flow hedges, gain (loss)   $ (1)    
Derivatives Designated as Non-Hedging Instruments [Member] | Foreign Currency Option Contracts [Member]        
Derivative [Line Items]        
Notional value of contracts outstanding | €     € 40  
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 2018-08      
Maximum [Member] | Derivatives Designated as Non-Hedging Instruments [Member] | Forward Foreign Exchange Contracts [Member]        
Derivative [Line Items]        
Derivative contracts maturity date 2017-05      
Maximum [Member] | Derivatives Designated as Non-Hedging Instruments [Member] | Foreign Currency Option Contracts [Member]        
Derivative [Line Items]        
Derivative contracts maturity date 2017-07