v3.25.4

Fair value of assets held by international pension plans (Details) - Foreign Plan - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | $ 583 | $ 594
Level 1 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 5 | 1
Level 2 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 17 | 20
Level 3 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 561 | 565
Fair Value Measured at Net Asset Value Per Share |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 8
Cash and equivalents |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 8 | 0
Cash and equivalents | Level 1 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 4 | 0
Cash and equivalents | Level 2 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 4 | 0
Cash and equivalents | Level 3 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0
Cash and equivalents | Fair Value Measured at Net Asset Value Per Share |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0
Bond funds |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 4 | 11
Bond funds | Level 1 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0
Bond funds | Level 2 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 4 | 11
Bond funds | Level 3 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0
Bond funds | Fair Value Measured at Net Asset Value Per Share |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0
Real estate funds |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 8
Real estate funds | Level 1 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0
Real estate funds | Level 2 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0
Real estate funds | Level 3 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 0
Real estate funds | Fair Value Measured at Net Asset Value Per Share |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 0 | 8
Other Investments |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 571 | 575
Other Investments | Level 1 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 1 | 1
Other Investments | Level 2 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 9 | 9
Other Investments | Level 3 |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | 561 | 565
Other Investments | Fair Value Measured at Net Asset Value Per Share |  |
Defined Benefit Plan, Plan Assets, Allocation [Line Items] |  |
Defined Benefit Plan, Plan Assets, Amount | $ 0 | $ 0

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