Accumulated Other Comprehensive (Loss) / Income (Details) $ in Millions	6 Months Ended
	Aug. 03, 2019 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 11,297
Ending balance	11,836
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(13)
Other comprehensive income before reclassifications, net of tax	0
Amounts reclassified from AOCI, net of tax	0
Ending balance	(13)
Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(20)
Other comprehensive income before reclassifications, net of tax	3
Amounts reclassified from AOCI, net of tax	0
Ending balance	(17)
Pension
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(772)
Other comprehensive income before reclassifications, net of tax	0
Amounts reclassified from AOCI, net of tax	20
Ending balance	(752)
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(805)
Other comprehensive income before reclassifications, net of tax	3
Amounts reclassified from AOCI, net of tax	20
Ending balance	$ (782)