Pensions - Schedule of Defined Benefit Plans Disclosures (Details) - USD ($) $ in Millions	Dec. 28, 2025	Dec. 29, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 572	$ 526	$ 535
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	81	52
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	52	315
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	431	151
Assets Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Plan assets	8	8
Debt instruments
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11	223
Debt instruments \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Debt instruments \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11	223
Debt instruments \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Debt instruments \| Assets Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1	8
Equity securities \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1	8
Equity securities \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Equity securities \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Equity securities \| Assets Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Buy-in annuity policies
Defined Benefit Plan Disclosure [Line Items]
Plan assets	256
Buy-in annuity policies \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0
Buy-in annuity policies \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0
Buy-in annuity policies \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	256	0
Buy-in annuity policies \| Assets Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0
Other Assets
Defined Benefit Plan Disclosure [Line Items]
Plan assets	255	195
Other Assets \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	80	44
Other Assets \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Other Assets \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	175	151
Other Assets \| Assets Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Commingled Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	49	100
Commingled Funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Commingled Funds \| Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	41	92
Commingled Funds \| Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Commingled Funds \| Assets Measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 8	$ 8