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Fair Value Measurements - Recurring (Details) - USD ($)
$ in Millions
3 Months Ended
Oct. 29, 2016
Jul. 29, 2017
Jan. 28, 2017
Jul. 30, 2016
Level 3 | Auction rate securities        
Liabilities        
Proceeds from Sale of Other Assets $ 2      
Fair Value, Measurements, Recurring [Member] | Level 1 | Money market funds        
Assets        
Cash and cash equivalents   $ 175 $ 290 $ 87
Other current assets   2 7 0
Fair Value, Measurements, Recurring [Member] | Level 1 | Marketable securities that fund deferred compensation        
Assets        
Other assets   97 96 95
Fair Value, Measurements, Recurring [Member] | Level 2 | Commercial paper        
Assets        
Cash and cash equivalents   60 0 0
Short-term investments   299 349 170
Other current assets   60 60 60
Fair Value, Measurements, Recurring [Member] | Level 2 | Time deposits        
Assets        
Cash and cash equivalents   16 15 169
Short-term investments   1,826 1,332 1,414
Other current assets   101 100 79
Fair Value, Measurements, Recurring [Member] | Level 2 | Corporate bonds        
Assets        
Short-term investments   0 0 6
Fair Value, Measurements, Recurring [Member] | Level 2 | Foreign currency derivative instruments        
Assets        
Other current assets   0 2 1
Liabilities        
Accrued liabilities   15 3 5
Fair Value, Measurements, Recurring [Member] | Level 2 | Interest Rate Swap [Member]        
Assets        
Other assets   16 13 27
Fair Value, Measurements, Recurring [Member] | Level 3 | Auction rate securities        
Assets        
Other assets   $ 0 $ 0 $ 2