Fair Value Measurements (Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions		Jun. 27, 2020	Sep. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		$ 85	$ 95
Derivative, Collateral, Obligation to Return Cash			0
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Netting	[1]	(82)	(8)
Total assets		485	497
Derivative Liability, Netting	[1]	(167)	(103)
Total liabilities		14	7
Fair Value, Recurring [Member] | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		17	7
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		502	446
Total liabilities		181	110
Fair Value, Recurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		48	52
Total liabilities		0	0
Other Current Assets [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale Securities, Current		2	1
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		16	23
Derivative Asset, Netting		(32)	(3)
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		26	53
Derivative Asset, Netting		(50)	(5)
Other Current 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, Current		0	0
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
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale Securities, Current		1	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		48	26
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		76	58
Other Current 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, Current		1	1
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		105	102
Deferred compensation assets		336	318
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		17	7
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		58	51
Deferred compensation assets		319	311
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		47	51
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		2	4
Derivative Liability, Netting		(5)	(13)
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		12	3
Derivative Liability, Netting		(162)	(90)
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		7	17
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		174	93
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

[1] Our derivative assets and liabilities are presented in our Consolidated Condensed Balance Sheets on a net basis when a legally enforceable master netting arrangement exists between the counterparty to a derivative contract and us. Additionally, at June 27, 2020, and September 28, 2019, we had $85 million and $95 million, respectively, of net cash collateral with various counterparties where master netting arrangements exist