v2.4.0.8
Pre-Tax Effect of Derivative Instruments Designated as Cash Flow, Net Investment and Fair Value Hedges (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 29, 2012
Cash flow hedges
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains/ (Losses) Recognized in OCI - Effective Portion $ 1,735 $ 903 $ (175)
Gains/ (Losses) Reclassified from AOCI into Net Income - Effective Portion (170) 670 607
Cash flow hedges | Foreign exchange contracts
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains/ (Losses) Recognized in OCI - Effective Portion 1,750 891 (175)
Gains/ (Losses) Reclassified from AOCI into Net Income - Effective Portion (154) 676 607
Cash flow hedges | Interest rate contracts
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains/ (Losses) Recognized in OCI - Effective Portion (15) 12 0
Gains/ (Losses) Reclassified from AOCI into Net Income - Effective Portion (16) (6) 0
Net investment hedges | Foreign exchange contracts
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains/ (Losses) Recognized in OCI - Effective Portion 53 143 (5)
Gains/ (Losses) Reclassified from AOCI into Net Income - Effective Portion 0 0 0
Fair Value Hedges | Interest rate contracts
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains/ (Losses) On Derivative Instruments 39 0 0
Gains/ (Losses) Related to Hedged Items $ (39) $ 0 $ 0