Stockholders' Equity - Changes in AOCL (Details) $ in Millions	3 Months Ended
	Apr. 29, 2017 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at January 28, 2017	$ (1,053)
Balance at April 29, 2017	(497)
Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at January 28, 2017	(1,053)
Foreign currency translation adjustment	(16)
Divestiture of businesses (net of taxes of $12)	572
Taxes related to divestiture of businesses	12
Balance at April 29, 2017	(497)
Parent [Member] | Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at January 28, 2017	(761)
Foreign currency translation adjustment	(16)
Divestiture of businesses (net of taxes of $12)	282
Balance at April 29, 2017	(495)
Parent [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at January 28, 2017	(292)
Foreign currency translation adjustment	0
Divestiture of businesses (net of taxes of $12)	290
Balance at April 29, 2017	$ (2)