Fair Value Measurements (Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	Apr. 03, 2021	Oct. 03, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	$ 6	$ 16
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Netting	(163)	(53)
Total assets	601	510
Derivative Liability, Netting	(169)	(69)
Total liabilities	33	15
Fair Value, Recurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	12	19
Total liabilities	0	0
Fair Value, Recurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	699	491
Total liabilities	202	84
Fair Value, Recurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	53	53
Total liabilities	0	0
Other Current Assets [Member] | Fair Value, Recurring [Member] | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Assets	1	2
Derivative Asset, Netting	(2)	(2)
Other Current Assets [Member] | Fair Value, Recurring [Member] | Undesignated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Assets	95	45
Derivative Asset, Netting	(161)	(51)
Other Current Assets [Member] | Fair Value, Recurring [Member] | Level 1 | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Assets	0	0
Other Current Assets [Member] | Fair Value, Recurring [Member] | Level 1 | Undesignated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Assets	0	0
Other Current Assets [Member] | Fair Value, Recurring [Member] | Level 2 | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Assets	3	4
Other Current Assets [Member] | Fair Value, Recurring [Member] | Level 2 | Undesignated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Assets	256	96
Other Current Assets [Member] | Fair Value, Recurring [Member] | Level 3 | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Assets	0	0
Other Current Assets [Member] | Fair Value, Recurring [Member] | Level 3 | Undesignated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Assets	0	0
Other Assets [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for Sale Securities, Noncurrent	108	108
Deferred compensation assets	397	355
Other Assets [Member] | Fair Value, Recurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for Sale Securities, Noncurrent	0	0
Deferred compensation assets	12	19
Other Assets [Member] | Fair Value, Recurring [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for Sale Securities, Noncurrent	55	55
Deferred compensation assets	385	336
Other Assets [Member] | Fair Value, Recurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for Sale Securities, Noncurrent	53	53
Deferred compensation assets	0	0
Other Current Liabilities [Member] | Fair Value, Recurring [Member] | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Liabilities	0	0
Derivative Liability, Netting	(43)	(10)
Other Current Liabilities [Member] | Fair Value, Recurring [Member] | Undesignated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Liabilities	33	15
Derivative Liability, Netting	(126)	(59)
Other Current Liabilities [Member] | Fair Value, Recurring [Member] | Level 1 | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Liabilities	0	0
Other Current Liabilities [Member] | Fair Value, Recurring [Member] | Level 1 | Undesignated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Liabilities	0	0
Other Current Liabilities [Member] | Fair Value, Recurring [Member] | Level 2 | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Liabilities	43	10
Other Current Liabilities [Member] | Fair Value, Recurring [Member] | Level 2 | Undesignated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Liabilities	159	74
Other Current Liabilities [Member] | Fair Value, Recurring [Member] | Level 3 | Designated as hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Liabilities	0	0
Other Current Liabilities [Member] | Fair Value, Recurring [Member] | Level 3 | Undesignated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Financial Instruments, Liabilities	$ 0	$ 0