Pensions and other benefit plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 28, 2026 |
Jun. 29, 2025 |
Jun. 28, 2026 |
Jun. 29, 2025 |
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| Retirement Plans | ||||
| Components of net periodic benefit cost | ||||
| Service cost | $ 235 | $ 219 | $ 471 | $ 433 |
| Interest cost | 360 | 356 | 720 | 707 |
| Expected return on plan assets | (638) | (599) | (1,277) | (1,186) |
| Amortization of prior service cost/(credit) | (46) | (46) | (92) | (92) |
| Recognized actuarial (gains)/losses | 70 | 85 | 139 | 168 |
| Curtailments and settlements | 0 | 1 | 0 | 1 |
| Net periodic benefit cost/(credit) | (19) | 16 | (39) | 31 |
| Other Benefit Plans | ||||
| Components of net periodic benefit cost | ||||
| Service cost | 80 | 72 | 160 | 144 |
| Interest cost | 52 | 53 | 104 | 107 |
| Expected return on plan assets | (2) | (1) | (4) | (3) |
| Amortization of prior service cost/(credit) | (1) | (1) | (1) | (1) |
| Recognized actuarial (gains)/losses | 26 | 15 | 52 | 31 |
| Curtailments and settlements | 0 | 0 | 0 | 0 |
| Net periodic benefit cost/(credit) | $ 155 | $ 138 | $ 311 | $ 278 |
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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