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Goodwill (Tables)
 3 Months Ended
Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The changes in the carrying amount of goodwill were:
in $ millionsAmericas Materials SolutionsAmericas Building SolutionsInternational SolutionsTotal
Carrying value, December 31, 20256,9643,3282,80713,099
Acquisitions19–2443
Foreign currency translation adjustment(9)(2)(23)(34)
Impairment charge––(48)(48)
Reclassified as held for sale–(300)(168)(468)
Reallocation–(14)14–
Carrying value, March 31, 20266,9743,0122,60612,592
in $ millionsAmericas Materials SolutionsAmericas Building SolutionsInternational SolutionsTotal
Carrying value, December 31, 20245,8033,0702,18811,061
Acquisitions1,1441884881,820
Foreign currency translation adjustment2470134228
Divestitures(7)–(3)(10)
Carrying value, December 31, 20256,9643,3282,80713,099
in $ millionsAmericas Materials SolutionsAmericas Building SolutionsInternational SolutionsTotal
Carrying value, December 31, 20245,8033,0702,18811,061
Acquisitions18414214340
Foreign currency translation adjustment217174
Carrying value, March 31, 20255,9893,2132,27311,475