Other Long-Term Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015
Other Assets, Noncurrent Disclosure [Abstract]
Equity method investments	$ 1,328	$ 1,590
Non-marketable cost method investments	3,098	2,933
Non-current deferred tax assets	907	1,051
Pre-payments for property, plant and equipment	347	623
Loans receivable	236	642
Grants receivable	63	318
Reverse repurchase agreements	250	350
Other	930	658
Total other long-term assets	7,159	$ 8,165
Transfers From Other Long-Term Assets to Property, Plant, And Equipment Related To Prepaid Equipment	$ 326