Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	Jun. 27, 2015	Sep. 27, 2014
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	$ 48	$ 100
Other Liabilities	(198)	(198)
Total	664	444
Fair Value, Measurements, Recurring \| Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	95	117
Derivative Liabilities	(44)	(75)
Fair Value, Measurements, Recurring \| Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	1,072	621
Derivatives Liability	(247)	(121)
Fair Value, Measurements, Recurring \| Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	2
Derivative Liabilities	(64)
Fair Value, Measurements, Recurring \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	48	100
Other Liabilities	0	0
Total	48	100
Fair Value, Measurements, Recurring \| Level 1 \| Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring \| Level 1 \| Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	0	0
Derivatives Liability	0	0
Fair Value, Measurements, Recurring \| Level 1 \| Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0
Derivative Liabilities	0
Fair Value, Measurements, Recurring \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Other Liabilities	0	0
Total	814	542
Fair Value, Measurements, Recurring \| Level 2 \| Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	95	117
Derivative Liabilities	(44)	(75)
Fair Value, Measurements, Recurring \| Level 2 \| Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	1,072	621
Derivatives Liability	(247)	(121)
Fair Value, Measurements, Recurring \| Level 2 \| Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	2
Derivative Liabilities	(64)
Fair Value, Measurements, Recurring \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0	0
Other Liabilities	(198)	(198)
Total	(198)	(198)
Fair Value, Measurements, Recurring \| Level 3 \| Interest rate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring \| Level 3 \| Foreign exchange
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivatives assets	0	0
Derivatives Liability	0	0
Fair Value, Measurements, Recurring \| Level 3 \| Other Derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Asset	0
Derivative Liabilities	0
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Borrowings disclosed at fair value	15,598	15,275
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	14,834	14,374
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	$ 764	$ 901

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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