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Expected Annual Amortization Expense Related to Acquired Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 27, 2014
Sep. 28, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2015 $ 1,204  
2016 1,083  
2017 825  
2018 592  
2019 175  
Thereafter 163  
Definite-lived and amortizable acquired intangible assets, Net Carrying Amount $ 4,042 $ 4,079