Fair Value Measurements - Nonrecurring (Details) - Fair Value, Measurements, Nonrecurring [Member] - Level 3 - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges		$ 1	$ 3	$ 6	$ 15
Remaining net carrying value	[1]	0	0	0	0
Selling, General and Administrative Expenses [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges		1	3	6	8
Remaining net carrying value	[1]	0	0	0	0
Restructuring Charges [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	[2]	0	0	0	7
Remaining net carrying value	[1],[2]	$ 0	$ 0	$ 0	$ 0

[1] Remaining net carrying value approximates fair value. Because assets subject to long-lived asset impairment are not measured at fair value on a recurring basis, certain fair value measurements presented in the table may reflect values at earlier measurement dates and may no longer represent the fair values at July 29, 2017, and July 30, 2016.

[2] See Note 5, Restructuring Charges, for additional information.