Segments (Revenue by Reportable Segment and Product Category) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 11,853	$ 9,764	$ 30,325	$ 28,442
Domestic Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	10,850	8,964	27,893	26,266
Domestic Segment [Member] | Computing and Mobile Phones [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	5,059	4,238	13,130	12,006
Domestic Segment [Member] | Consumer Electronics [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	3,197	2,659	8,090	8,101
Domestic Segment [Member] | Appliances [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,478	1,071	3,703	3,170
Domestic Segment [Member] | Entertainment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	509	441	1,430	1,353
Domestic Segment [Member] | Services [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	578	519	1,461	1,526
Domestic Segment [Member] | Other [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	29	36	79	110
International Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,003	800	2,432	2,176
International Segment [Member] | Computing and Mobile Phones [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	531	407	1,211	1,020
International Segment [Member] | Consumer Electronics [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	265	229	663	663
International Segment [Member] | Appliances [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	93	67	243	209
International Segment [Member] | Entertainment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	50	37	156	109
International Segment [Member] | Services [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	51	50	119	138
International Segment [Member] | Other [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 13	$ 10	$ 40	$ 37