v2.4.1.9
Other Income/(Expense), Net (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Other Income Expense [Line Items]    
Interest and dividend income $ 654us-gaap_InvestmentIncomeInterestAndDividend $ 427us-gaap_InvestmentIncomeInterestAndDividend
Interest expense (131)us-gaap_InterestExpense (84)us-gaap_InterestExpense
Other expense, net (353)us-gaap_OtherNonoperatingIncomeExpense (97)us-gaap_OtherNonoperatingIncomeExpense
Total other income/(expense), net $ 170us-gaap_NonoperatingIncomeExpense $ 246us-gaap_NonoperatingIncomeExpense