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Income Taxes (Components of Earnings Before Provision For Income Taxes) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 29, 2017
Jan. 31, 2016
Feb. 01, 2015
Components of Earnings before Provision for Income Taxes:      
United States $ 11,568 $ 10,207 $ 9,217
Foreign 923 814 759
EARNINGS BEFORE PROVISION FOR INCOME TAXES [1] $ 12,491 $ 11,021 $ 9,976
[1] Fiscal years ended January 29, 2017, January 31, 2016 and February 1, 2015 include 52 weeks.