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v3.26.1

Pension plans and other postretirement benefits - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Retirement Benefits [Abstract] |  |  |  |
Defined contribution pension and retirement savings plans total expense | $ 43 | $ 40 | $ 93 | $ 90

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- References No definition available. + Details
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- Definition Amount of cost (reversal of cost) for pension and other postretirement benefits. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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