Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 11,420	$ 11,704	$ 9,620
Other comprehensive income, net of tax:
Change in net unrealized holding gains (losses) on available-for-sale investments	(710)	577	1,181
Change in deferred tax asset valuation allowance	(18)	(41)	(26)
Change in net unrealized holding gains (losses) on derivatives	157	(427)	(89)
Change in net prior service (costs) credits	7	(33)	18
Change in actuarial valuation	128	(402)	520
Change in net foreign currency translation adjustment	(170)	(251)	38
Other comprehensive income (loss)	(606)	(577)	1,642
Total comprehensive income	$ 10,814	$ 11,127	$ 11,262