Major Component of Discontinued Operations, Net of Tax (Detail) - Discontinued Operations, Held-for-Sale - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 24, 2016	Sep. 30, 2017	Sep. 24, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	$ 111	$ 583	$ 398	$ 1,886
Cost of goods sold and occupancy costs	89	462	322	1,489
Operating expenses	25	139	79	435
Asset impairments		90		90
Restructuring charges			2	10
Interest income			1
Interest expense				(4)
Other income (expense), net				(1)
Net (increase) reduction of loss on discontinued operations held for sale		(155)	45	(155)
Net gain on sale of discontinued operations	1		4
Income tax expense (benefit)	4	(126)	7	(123)
Discontinued operations, net of tax	$ (6)	$ (137)	$ 38	$ (175)