Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Net Periodic Postretirement Benefit Cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Non-U.S. Plans
Net Periodic Postretirement Benefit Cost
Service cost	$ 7	$ 7
Interest cost	15	14
Expected returns on plan assets	(12)	(11)
Amortization of net actuarial loss	1	1
Amortization of prior service credit	(1)	(1)
Net periodic pension benefit cost	10	10
Defined benefit plan, contributions by employer	12
U.S. Plans
Net Periodic Postretirement Benefit Cost
Service cost	2	2
Interest cost	10	9
Expected returns on plan assets	(10)	(9)
Amortization of net actuarial loss	1	1
Net periodic pension benefit cost	$ 3	$ 3