Segment information - Additions to long-lived assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment information - Consolidated Balance Sheet
Total property, plant and equipment and intangible asset additions	$ 2,878	$ 2,705	$ 1,878
Americas Materials Solutions
Segment information - Consolidated Balance Sheet
Total property, plant and equipment and intangible asset additions	1,148	1,151	854
Americas Building Solutions
Segment information - Consolidated Balance Sheet
Total property, plant and equipment and intangible asset additions	507	480	360
International Solutions
Segment information - Consolidated Balance Sheet
Total property, plant and equipment and intangible asset additions	$ 1,223	$ 1,074	$ 664