v3.25.4

Equity method investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 50	$ 56
Income from equity method investments	$ 11	13	$ 13
Quality Concrete Inc.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	47.00%
Equity method investments	$ 22	20
Income from equity method investments	$ 3	3	2
Nelson Aggregate Co Partnership
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%
Equity method investments	$ 18	17
Income from equity method investments	5	6	6
Others
Schedule of Equity Method Investments [Line Items]
Equity method investments	10	19
Income from equity method investments	$ 3	$ 4	$ 5

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