Commitments and Contingencies Commitments and Contingencies - Fire (Details) $ in Millions	3 Months Ended	12 Months Ended
	Jan. 28, 2017 USD ($)	Jan. 28, 2017 USD ($)
Commitments and Contingencies [Line Items]
Gain recorded on partial settlement related to inventory	$ 73	$ 73
Fire [Member]
Commitments and Contingencies [Line Items]
Loss on inventory		86
Loss on property, plant, and equipment		12
Other fire-related costs		35
Total fire-related costs		133
Gain recorded on partial settlement related to inventory		73
Expected insurance Recoveries		206
Insurance Proceeds, Advance of Funds		(174)
Insurance Settlements Receivable	$ 32	$ 32