Quarterly report pursuant to Section 13 or 15(d)

Cash and Investments (Detail)

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Cash and Investments (Detail) - USD ($)
$ in Millions
Sep. 26, 2015
Dec. 27, 2014
Investments and Cash [Abstract]    
Available-for-sale investments $ 20,222 $ 13,038
Cash 741 805
Equity method investments 1,577 1,446
Loans receivable 800 971
Non-marketable cost method investments 3,003 1,769
Reverse repurchase agreements 3,318 718
Trading assets 6,659 9,063
Total cash and investments $ 36,320 $ 27,810