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Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
Oct. 31, 2015
Jan. 31, 2015
Nov. 01, 2014
Assets:      
Cash equivalents $ 174 $ 429 $ 241
Derivative financial instruments 84 157 98
Deferred compensation plan assets 41 40 40
Total 299 626 379
Liabilities:      
Derivative financial instruments 8 1 2
Fair Value, Inputs, Level 1 [Member]      
Assets:      
Cash equivalents 62 88 29
Derivative financial instruments 0 0 0
Deferred compensation plan assets 41 40 40
Total 103 128 69
Liabilities:      
Derivative financial instruments 0 0 0
Fair Value, Inputs, Level 2 [Member]      
Assets:      
Cash equivalents 112 341 212
Derivative financial instruments 84 157 98
Deferred compensation plan assets 0 0 0
Total 196 498 310
Liabilities:      
Derivative financial instruments 8 1 2
Fair Value, Inputs, Level 3 [Member]      
Assets:      
Cash equivalents 0 0 0
Derivative financial instruments 0 0 0
Deferred compensation plan assets 0 0 0
Total 0 0 0
Liabilities:      
Derivative financial instruments $ 0 $ 0 $ 0