Retirement Plans - Schedule of Defined Benefit Pension Plan by Major Asset Categories (Details) - USD ($) $ in Millions	Oct. 03, 2025	Sep. 27, 2024	Sep. 29, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	$ 305	$ 315	$ 281	$ 271
Carrying Value
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	242	134
Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	59	134
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	183
Investments measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	63	181
Cash and cash equivalents | Carrying Value
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	9	6
Cash and cash equivalents | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	9	6
Cash and cash equivalents | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0
Fixed income funds | Carrying Value
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	233	128
Fixed income funds | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	50	128
Fixed income funds | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	183
Common collective funds - debt | Investments measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	0	87
Diversified and equity funds | Investments measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount	$ 63	$ 94