Goodwill and intangible assets, net - Schedule of Changes in Goodwill (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Goodwill [Roll Forward] | ||
| Goodwill, beginning balance | $ 8,917 | $ 8,970 |
| Acquisitions | 17 | 103 |
| Foreign currency translation adjustment and other | 86 | (156) |
| Goodwill, ending balance | 9,020 | 8,917 |
| Building Materials | ||
| Goodwill [Roll Forward] | ||
| Goodwill, beginning balance | 4,891 | 5,042 |
| Acquisitions | 17 | 5 |
| Foreign currency translation adjustment and other | 86 | (156) |
| Goodwill, ending balance | 4,994 | 4,891 |
| Building Envelope | ||
| Goodwill [Roll Forward] | ||
| Goodwill, beginning balance | 4,026 | 3,928 |
| Acquisitions | 0 | 98 |
| Foreign currency translation adjustment and other | 0 | 0 |
| Goodwill, ending balance | $ 4,026 | $ 4,026 |
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- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of increase (decrease) from foreign currency translation and measurement period adjustments of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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