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Income Taxes (Effective Income Tax Rate Reconciliation) (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 03, 2019
Jan. 28, 2018
Jan. 29, 2017
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Combined federal, state and foreign effective tax rate 23.60% 37.00% 36.30%
Federal statutory rate 21.00% 34.00% 35.00%
Reconciliation of the Provision for Income Taxes:      
Income taxes at federal statutory rate $ 3,057 $ 4,648 $ 4,372
State income taxes, net of federal income tax benefit 443 369 309
Effective Income Tax Rate Reconciliation, Adjustment to Tax on Repatriation of Earnings, Amount (62)    
Tax on mandatory deemed repatriation   400 0
Other, net (3) (349) (147)
Provision for income taxes $ 3,435 $ 5,068 $ 4,534