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Fair Value Measurements (Fair Value, Assets And Liabilities Measured On Recurring Basis) (Details) - USD ($)
$ in Millions
Aug. 04, 2018
Feb. 03, 2018
Jul. 29, 2017
Assets:      
Cash and Cash Equivalents $ 843 $ 1,515 $ 1,360
Available-for-sale Securities 11 17 6
Foreign Currency Cash Flow Hedge Asset at Fair Value 3   8
Interest Rate Fair Value Hedges     2
Liabilities:      
Foreign Currency Cash Flow Hedge Liability at Fair Value 1 9 11
Fair Value, Inputs, Level 1 [Member]      
Assets:      
Cash and Cash Equivalents 843 1,515 1,360
Available-for-sale Securities 11 17 6
Foreign Currency Cash Flow Hedge Asset at Fair Value 0   0
Interest Rate Fair Value Hedges     0
Liabilities:      
Foreign Currency Cash Flow Hedge Liability at Fair Value 0 0 0
Fair Value, Inputs, Level 2 [Member]      
Assets:      
Cash and Cash Equivalents 0 0 0
Available-for-sale Securities 0 0 0
Foreign Currency Cash Flow Hedge Asset at Fair Value 3   8
Interest Rate Fair Value Hedges     2
Liabilities:      
Foreign Currency Cash Flow Hedge Liability at Fair Value 1 9 11
Fair Value, Inputs, Level 3 [Member]      
Assets:      
Cash and Cash Equivalents 0 0 0
Available-for-sale Securities 0 0 0
Foreign Currency Cash Flow Hedge Asset at Fair Value 0   0
Interest Rate Fair Value Hedges     0
Liabilities:      
Foreign Currency Cash Flow Hedge Liability at Fair Value $ 0 $ 0 $ 0