v3.25.4

Pension and other postretirement benefits - Level 3 Rollforward (Details) - Pension Plan - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
U.S. |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] |  |
Fair value of plan assets, beginning of year | $ 0 | $ 0
Fair value of plan assets, end of year | 0 | 0
Non-U.S. |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] |  |
Fair value of plan assets, beginning of year | 175 | 669
Fair value of plan assets, end of year | 246 | 175
Non-U.S. | Equity instruments |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] |  |
Fair value of plan assets, beginning of year | 28 |
Fair value of plan assets, end of year | 56 | 28
Non-U.S. | Insurance contracts |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] |  |
Fair value of plan assets, beginning of year | 93 |
Fair value of plan assets, end of year | 90 | 93
Non-U.S. | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] |  |
Fair value of plan assets, beginning of year | 95 | 494
Actual return on plan assets, relating to assets still held at reporting date | 1 | 23
Purchases, sales and settlements | (8) | (402)
Change due to exchange rate changes | 4 | (20)
Fair value of plan assets, end of year | 92 | 95
Non-U.S. | Level 3 | Equity instruments |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] |  |
Fair value of plan assets, beginning of year | 2 | 26
Actual return on plan assets, relating to assets still held at reporting date | 0 | 0
Purchases, sales and settlements | 0 | (24)
Change due to exchange rate changes | 0 | 0
Fair value of plan assets, end of year | 2 | 2
Non-U.S. | Level 3 | Insurance contracts |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] |  |
Fair value of plan assets, beginning of year | 93 | 468
Actual return on plan assets, relating to assets still held at reporting date | 1 | 23
Purchases, sales and settlements | (8) | (378)
Change due to exchange rate changes | 4 | (20)
Fair value of plan assets, end of year | $ 90 | $ 93

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- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(A) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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