Pensions and similar obligations - Summary of Net Liability for Post-employment and Long-term Employee Benefit Plans (Detail) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
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| Disclosure of defined benefit plans [abstract] | ||||
| Present value of funded obligations | $ (4,209) | $ (4,090) | ||
| Fair value of plan assets | 3,851 | 3,547 | ||
| Present value of net obligations for funded plans | (358) | (543) | ||
| Present value of unfunded obligations | (562) | (542) | ||
| Present value of net obligations | (920) | (1,085) | ||
| Unrecognized asset | (95) | (63) | $ (38) | $ (43) |
| Net liability | (1,015) | (1,148) | ||
| Other long term employee benefits | (110) | (106) | ||
| Net liability | (1,125) | (1,254) | ||
| Employee benefits amounts in the statement of financial position: | ||||
| Liabilities | (1,275) | (1,296) | ||
| Assets | 150 | 42 | ||
| Net liability | $ (1,125) | $ (1,254) |
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- Definition Defined benefit obligation excluding irrecoverable surplus. No definition available.
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- Definition Irrecoverable surplus. No definition available.
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- Definition net defined benefit liability (asset) recognized in balance sheet [abstract] No definition available.
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- Definition Surplus deficit in funded plan. No definition available.
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- Definition Surplus deficit in unfunded plan. No definition available.
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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of non-current net defined benefit asset. [Refer: Net defined benefit asset] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of non-current net defined benefit liability. [Refer: Net defined benefit liability] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of non-current provisions other than provisions for employee benefits. [Refer: Non-current provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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