Major Component of Discontinued Operations, Net of Tax (Detail) - Discontinued Operations, Held-for-Sale - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jun. 25, 2016	Jul. 01, 2017	Jun. 25, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	$ 119	$ 635	$ 287	$ 1,303
Cost of goods sold and occupancy costs	97	501	233	1,027
Operating expenses	26	146	52	296
Restructuring charges	1	6	2	11
Interest income				1
Interest expense		(2)		(4)
Net (increase) reduction of loss on discontinued operations held for sale	(2)		45
Net gain on sale of discontinued operations	13		3
Income tax expense	3	2	3	4
Discontinued operations, net of tax	$ 3	$ (22)	$ 45	$ (38)