Derivative Instruments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015	Oct. 03, 2015
Derivative [Line Items]
Hedging Period for Foreign Currency Transactions, Maximum			4 years
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ 91
Aggregate fair value of derivative instruments with credit-risk-related contingent features in a net liability position by counterparty	$ 48		48		$ 7
Foreign exchange | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Notional Amount	3,700		3,700		3,300
Interest Expense | Interest rate
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	24	$ 23	73	$ 72
Fair Value Hedging | Interest rate | Derivatives Designated as Hedges
Derivative [Line Items]
Derivative, Notional Amount	7,500		7,500		6,400
Cash Flow Hedging | Foreign exchange | Derivatives Designated as Hedges
Derivative [Line Items]
Derivative, Notional Amount	$ 5,500		$ 5,500		$ 6,500