Segments Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 9,320	$ 8,945	$ 26,788	$ 25,921
Domestic Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	8,491	8,192	24,675	23,910
International Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 829	$ 753	$ 2,113	$ 2,011