Net Sales (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 03, 2019	Oct. 28, 2018	Nov. 03, 2019	Oct. 28, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 27,223	$ 26,302	$ 84,443	$ 81,712
Products
Disaggregation of Revenue [Line Items]
Net sales	25,887	24,922	80,599	77,733
Services
Disaggregation of Revenue [Line Items]
Net sales	1,336	1,380	3,844	3,979
Building Materials
Disaggregation of Revenue [Line Items]
Net sales	10,299	10,243	30,198	30,224
Décor
Disaggregation of Revenue [Line Items]
Net sales	9,383	8,919	28,178	26,985
Hardlines
Disaggregation of Revenue [Line Items]
Net sales	7,541	7,140	26,067	24,503
In the U.S.
Disaggregation of Revenue [Line Items]
Net sales	24,995	24,083	77,634	74,978
Outside the U.S.
Disaggregation of Revenue [Line Items]
Net sales	$ 2,228	$ 2,219	$ 6,809	$ 6,734