Summary of Significant Accounting Policies (Schedule of Supplementary Cash Flow Information) (Detail) - USD ($) $ in Millions	9 Months Ended
	Oct. 02, 2015	Oct. 31, 2014
Accounting Policies [Abstract]
Vested stock issued as settlement of annual bonus accruals	$ 1	$ 1
Stock issued in lieu of cash dividends	2	2
Accrued dividends declared	25	0
Capital lease obligation	6	0
Promissory note received for disposition of business	73	0
Cash paid for interest (including discontinued operations)	33	41
Cash paid for income taxes, net of refunds (including discontinued operations)	$ 50	$ 22