Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Allowance for doubtful receivables [Member]
Valuation Allowances And Reserves, Disclosure [Roll Forward]
Valuation Allowances And Reserves, Beginning Balance	$ 38	$ 38	$ 38
Valuation Allowances And Reserves, Additions Charged to Expenses/Other Accounts	12	10	5
Valuation Allowances And Reserves, Net (Deductions) Recoveries	(10)	(10)	(5)
Valuation Allowances And Reserves, Ending Balance	40	38	38
Valuation allowance for deferred tax assets [Member]
Valuation Allowances And Reserves, Disclosure [Roll Forward]
Valuation Allowances And Reserves, Beginning Balance	595	456	389
Valuation Allowances And Reserves, Additions Charged to Expenses/Other Accounts	190	128	88
Valuation Allowances And Reserves, Net (Deductions) Recoveries	(84)	11	(21)
Valuation Allowances And Reserves, Ending Balance	$ 701	$ 595	$ 456