Fair Value Measurements (Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Mar. 29, 2014	Sep. 28, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets and liabilities posted cash collateral	$ 148	$ 79
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Exchange Forward Contracts, Assets	1	2
Available-for-Sale Securities, Current	2	1
Available for Sale Securities, Noncurrent	94	93
Deferred Compensation Assets	226	214
Total Assets	338	318
Foreign Exchange Forward Contracts, Liabilities	1	1
Total Liabilities	3	1
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Exchange Forward Contracts, Assets	0	0
Available-for-Sale Securities, Current	0	0
Available for Sale Securities, Noncurrent	3	4
Deferred Compensation Assets	12	23
Total Assets	15	27
Foreign Exchange Forward Contracts, Liabilities	0	0
Total Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Exchange Forward Contracts, Assets	1	3
Available-for-Sale Securities, Current	2	1
Available for Sale Securities, Noncurrent	24	24
Deferred Compensation Assets	214	191
Total Assets	291	248
Foreign Exchange Forward Contracts, Liabilities	1	1
Total Liabilities	186	102
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Exchange Forward Contracts, Assets	0	0
Available-for-Sale Securities, Current	0	0
Available for Sale Securities, Noncurrent	67	65
Deferred Compensation Assets	0	0
Total Assets	67	65
Foreign Exchange Forward Contracts, Liabilities	0	0
Total Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Netting [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Exchange Forward Contracts, Assets	0	(1)
Available-for-Sale Securities, Current	0	0
Available for Sale Securities, Noncurrent	0	0
Deferred Compensation Assets	0	0
Total Assets	(35)	(22)
Foreign Exchange Forward Contracts, Liabilities	0	0
Total Liabilities	(183)	(101)
Commodity [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commodity Derivatives	15	8
Derivative Financial Instruments, Liabilities	2	0
Commodity [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commodity Derivatives	0	0
Derivative Financial Instruments, Liabilities	0	0
Commodity [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commodity Derivatives	50	29
Derivative Financial Instruments, Liabilities	185	101
Commodity [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commodity Derivatives	0	0
Derivative Financial Instruments, Liabilities	0	0
Commodity [Member] | Fair Value, Measurements, Recurring [Member] | Netting [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commodity Derivatives	(35)	(21)
Derivative Financial Instruments, Liabilities	$ (183)	$ (101)