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Pension and postretirement benefits - Components of Plan Benefit Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2023 | Jul. 01, 2023
Pension |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Multiemployer Plan, Employer Contribution, Cost (Credit) | $ 2 | $ 4
Nonpension postretirement |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Multiemployer Plan, Employer Contribution, Cost (Credit) | (9) | (18)
Gain (loss) recognized in cost of goods sold | Pension |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Multiemployer Plan, Employer Contribution, Cost (Credit) | 2 | 4
Gain (loss) recognized in cost of goods sold | Nonpension postretirement |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Multiemployer Plan, Employer Contribution, Cost (Credit) | 1 | 2
Gain (loss) recognized in other income (expense), net | Pension |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Multiemployer Plan, Employer Contribution, Cost (Credit) | 0 | 0
Gain (loss) recognized in other income (expense), net | Nonpension postretirement |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Multiemployer Plan, Employer Contribution, Cost (Credit) | $ (10) | $ (20)

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- Definition 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. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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