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Segment information - Schedule of gain or loss on disposal of business (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment information - Consolidated Balance Sheet
Total (loss) gain on divestitures	$ 0	$ (99)	$ 78
Americas Materials Solutions
Segment information - Consolidated Balance Sheet
Total (loss) gain on divestitures		0	104
Americas Building Solutions
Segment information - Consolidated Balance Sheet
Total (loss) gain on divestitures		0	(25)
Europe Materials Solutions
Segment information - Consolidated Balance Sheet
Total (loss) gain on divestitures		(99)	3
Europe Building Solutions
Segment information - Consolidated Balance Sheet
Total (loss) gain on divestitures		$ 0	$ (4)

X

- Definition

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-1B

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