Schedule of Reconciliation of Provision for Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jan. 30, 2015	Jan. 31, 2014	Jan. 31, 2013
Income Tax Disclosure [Abstract]
Amount computed at the statutory federal income tax rate (35%)	$ (99)	$ 31	$ 121
State income taxes, net of federal tax benefit	3	0	10
Taxable conversion of subsidiary	(116)	0	0
Change in valuation allowance for deferred tax assets	105	0	0
Change in accruals for uncertain tax positions	2	(5)	(1)
CityTime uncertain tax liability	0	0	(96)
Research and development credits	(4)	(3)	(5)
Dividends paid to employee stock ownership plan	(4)	(22)	(9)
U.S. manufacturing activity benefit	0	(3)	(1)
Non-deductible penalties	0	4	0
Non-deductible goodwill	156	0	0
Other	4	2	3
Total	$ 47us-gaap_IncomeTaxExpenseBenefit	$ 4us-gaap_IncomeTaxExpenseBenefit	$ 22us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate	(16.60%)	4.50%	6.40%
Statutory federal income tax rate	35.00%	35.00%	35.00%

Effective Income Tax Rate Reconciliation Taxable Conversion of Subsidiary from Corporation to Limited Liability Company

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