Assets and Liabilities Measured at Fair Value (Details) (USD $) In Millions, unless otherwise specified	Mar. 29, 2014		Sep. 28, 2013
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	$ 106		$ 305
Total	168		447
Fair Value, Measurements, Recurring | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	146	[1]	170	[1]
Derivatives liabilities	(85)	[1]	(94)	[1]
Fair Value, Measurements, Recurring | Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	276	[1]	267	[1]
Derivatives liabilities	(275)	[1]	(201)	[1]
Fair Value, Measurements, Recurring | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	106		305
Total	106		305
Fair Value, Measurements, Recurring | Level 1 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	0	[1]	0	[1]
Derivatives liabilities	0	[1]	0	[1]
Fair Value, Measurements, Recurring | Level 1 | Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	0	[1]	0	[1]
Derivatives liabilities	0	[1]	0	[1]
Fair Value, Measurements, Recurring | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0		0
Total	62		142
Fair Value, Measurements, Recurring | Level 2 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	146	[1]	170	[1]
Derivatives liabilities	(85)	[1]	(94)	[1]
Fair Value, Measurements, Recurring | Level 2 | Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	276	[1]	267	[1]
Derivatives liabilities	(275)	[1]	(201)	[1]
Fair Value, Measurements, Recurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0		0
Total	0		0
Fair Value, Measurements, Recurring | Level 3 | Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	0	[1]	0	[1]
Derivatives liabilities	0	[1]	0	[1]
Fair Value, Measurements, Recurring | Level 3 | Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	0	[1]	0	[1]
Derivatives liabilities	0	[1]	0	[1]
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Borrowings disclosed at fair value	15,972		14,544
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Borrowings disclosed at fair value	0		0
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Borrowings disclosed at fair value	15,044		13,630
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Borrowings disclosed at fair value	$ 928		$ 914

[1] The Company has master netting arrangements by counterparty with respect to certain derivative contracts. Contracts in a liability position totaling $211 million and $171 million have been netted against contracts in an asset position in the Condensed Consolidated Balance Sheets at March 29, 2014 and September 28, 2013, respectively.