Goodwill and Intangible Assets (Schedule of Intangible Assets Including Estimates of Assets Acquired) (Detail) (USD $) In Millions, unless otherwise specified	Apr. 03, 2015	Jan. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	$ 131	$ 122
Accumulated amortization	(100)	(98)
Net carrying value	31	24
Indefinite-lived intangible assets	4	13
Total intangible asset, gross	135	135
Total intangible assets, Net carrying value	35	37
In-Process Research And Development
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	0	9
Trade Names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	4	4
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	71	70
Accumulated amortization	(59)	(57)
Net carrying value	12	13
Software and Technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	60	52
Accumulated amortization	(41)	(41)
Net carrying value	$ 19	$ 11