Pensions and other benefit plans - Projected Future Benefit Payments from Company's Retirement and Other Benefit Plans (Details) $ in Millions	Dec. 28, 2025 USD ($)
Retirement plans
Defined Benefit Plan Disclosure [Line Items]
2024	$ 1,678
2025	1,698
2026	1,798
2027	1,890
2028	1,996
2029-2033	11,386
Other benefit plans
Defined Benefit Plan Disclosure [Line Items]
2024	444
2025	401
2026	414
2027	427
2028	443
2029-2033	$ 2,425

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details