Accumulated Other Comprehensive (Loss) / Income (Details) $ in Millions	9 Months Ended
	Nov. 03, 2018 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 11,651	[1]
Ending balance	11,080
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(14)
Other comprehensive income before reclassifications, net of tax	0
Amounts reclassified from AOCI, net of tax	1
Ending balance	(13)
Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(13)
Other comprehensive income before reclassifications, net of tax	(10)
Amounts reclassified from AOCI, net of tax	0
Ending balance	(23)
Pension
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(720)
Other comprehensive income before reclassifications, net of tax	0
Amounts reclassified from AOCI, net of tax	42
Ending balance	(678)
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(747)	[1]
Other comprehensive income before reclassifications, net of tax	(10)
Amounts reclassified from AOCI, net of tax	43
Ending balance	$ (714)

[1] Refer to Note 2 regarding the adoption of new accounting standards for revenue recognition, leases, and pensions, including impacts on previously reported results.