Assets and Liabilities Measured at Fair Value (Details) (USD $) In Millions, unless otherwise specified	Jun. 29, 2013		Sep. 29, 2012
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 190		$ 86
Total	638		480
Fair Value, Measurements, Recurring | Interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	181	[1]	239	[1]
Derivatives liabilities	(103)	[1]
Fair Value, Measurements, Recurring | Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	457	[1]	390	[1]
Derivatives liabilities	(87)	[1]	(235)	[1]
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	190		86
Total	190		86
Fair Value, Measurements, Recurring | Level 1 | Interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	0	[1]	0	[1]
Derivatives liabilities	0	[1]
Fair Value, Measurements, Recurring | Level 1 | Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	0	[1]	0	[1]
Derivatives liabilities	0	[1]	0	[1]
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0		0
Total	448		394
Fair Value, Measurements, Recurring | Level 2 | Interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	181	[1]	239	[1]
Derivatives liabilities	(103)	[1]
Fair Value, Measurements, Recurring | Level 2 | Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	457	[1]	390	[1]
Derivatives liabilities	(87)	[1]	(235)	[1]
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0		0
Total	0		0
Fair Value, Measurements, Recurring | Level 3 | Interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	0	[1]	0	[1]
Derivatives liabilities	0	[1]
Fair Value, Measurements, Recurring | Level 3 | Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	0	[1]	0	[1]
Derivatives liabilities	0	[1]	0	[1]
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Borrowings disclosed at fair value	15,330		15,146
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Borrowings disclosed at fair value	0		0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Borrowings disclosed at fair value	13,815		13,493
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Borrowings disclosed at fair value	$ 1,515		$ 1,653

[1] The Company has master netting arrangements by counterparty with respect to certain derivative contracts. Contracts in a liability position totaling $110 million and $153 million have been netted against contracts in an asset position in the Condensed Consolidated Balance Sheets at June 29, 2013 and September 29, 2012, respectively.