Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 9,601	$ 10,316	$ 11,420
Other comprehensive income, net of tax:
Net unrealized holding gains (losses) on available-for-sale investments	(436)	415	(710)
Net unrealized holding gains (losses) on available-for-sale investments	0	(8)	(18)
Net unrealized holding gains (losses) on derivatives	365	7	157
Actuarial valuation and other pension expenses	317	(364)	135
Net foreign currency translation adjustment	510	(4)	(170)
Other comprehensive income (loss)	756	46	(606)
Total comprehensive income	$ 10,357	$ 10,362	$ 10,814