Property and Accumulated Depreciation - Summary (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2020	Feb. 01, 2019
Property, Plant and Equipment [Line Items]
Total cost	$ 35,945	$ 35,863
Accumulated depreciation	(17,276)	(17,431)
Property, less accumulated depreciation	18,669	18,432
Land
Property, Plant and Equipment [Line Items]
Total cost	7,200	7,196
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Total cost	$ 17,862	18,052
Buildings and building improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated depreciable lives, in years	5 years
Buildings and building improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated depreciable lives, in years	40 years
Equipment
Property, Plant and Equipment [Line Items]
Total cost	$ 10,377	10,090
Equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated depreciable lives, in years	2 years
Equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated depreciable lives, in years	15 years
Construction in progress
Property, Plant and Equipment [Line Items]
Total cost	$ 506	$ 525