Restructuring and Transaction Activities, Restructuring Accrual Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Oct. 01, 2022
Restructuring Accrual [Roll Forward]
Beginning balance	$ 5	$ 11
Charges	102	23
Non-cash items	(8)	0
Cash	(88)	(29)
Ending balance	11	5
Cumulative costs since 2021	105
Employee Severance and Benefits [Member]
Restructuring Accrual [Roll Forward]
Beginning balance	2	6
Charges	39	7
Non-cash items	0
Cash	(31)	(11)
Ending balance	10	2
Facility Exit Costs [Member]
Restructuring Accrual [Roll Forward]
Beginning balance	3	5
Charges	23	9
Non-cash items	0
Cash	(25)	(11)
Ending balance	1	3
Non-Cash Impairment Charges [Member]
Restructuring Accrual [Roll Forward]
Beginning balance	0	0
Charges	8	0
Non-cash items	(8)
Cash	0	0
Ending balance	0	0
Transaction Activities [Member]
Restructuring Accrual [Roll Forward]
Beginning balance	0	0
Charges	32	7
Non-cash items	0
Cash	(32)	(7)
Ending balance	$ 0	$ 0