Derivative Instruments - Additional Information (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014	Sep. 27, 2014
Derivative [Line Items]
Hedging Period for Foreign Currency Transactions, Maximum			4 years
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ 466,000,000
Net gains (losses) on foreign currency denominated assets and liabilities	0	(143,000,000)	0	(143,000,000)
Aggregate fair value of derivative instruments with credit-risk-related contingent features in a net liability position by counterparty	16,000,000		16,000,000		34,000,000
Foreign exchange | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Notional Amount	3,000,000,000		3,000,000,000		4,300,000,000
Interest Expense
Derivative [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	19,000,000	6,000,000	31,000,000	18,000,000
Interest Expense | Interest rate
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	24,000,000	22,000,000	49,000,000	44,000,000
Fair Value Hedging | Interest rate | Derivatives Designated as Hedges
Derivative [Line Items]
Derivative, Notional Amount	5,800,000,000		5,800,000,000		6,800,000,000
Cash Flow Hedging | Foreign exchange | Derivatives Designated as Hedges
Derivative [Line Items]
Derivative, Notional Amount	5,300,000,000		5,300,000,000		5,000,000,000
Venezuelan Bolívar Fuerte | SICAD 2 [Member]
Derivative [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities		$ 143,000,000