Income Taxes (Schedule of Reconciliation of Provision for Income Taxes) (Detail) - USD ($) $ in Millions	11 Months Ended		12 Months Ended
	Jan. 01, 2016	Jan. 02, 2015	Jan. 30, 2015	Jan. 31, 2014
Income Tax Disclosure [Abstract]
Amount computed at the statutory federal income tax rate (35%)	$ 124		$ (99)	$ 31
State income taxes, net of federal tax benefit	14		3	0
Taxable conversion of subsidiary	0		(116)	0
Change in valuation allowance for deferred tax assets	(21)		105	0
Change in accruals for uncertain tax positions	(4)		2	(5)
Research and development credits	(4)		(4)	(3)
Dividends paid to employee stock ownership plan	(3)		(4)	(22)
U.S. manufacturing activity benefit	0		0	(3)
Non-deductible penalties	0		0	4
Non-deductible goodwill	0		156	0
Other	6		4	2
Total	$ 112	$ 67	$ 47	$ 4
Effective income tax rate	31.50%		(16.60%)	4.50%