v3.26.1
Segment information - Schedule of Reconciliation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Total Revenues $ 2,178 $ 2,081
Cost of revenues: 1,967 1,859
Depreciation, depletion, accretion and amortization (236) (218)
Interest income 8 14
Interest expense (78) (132)
Acquisition and integration-related costs (23) (3)
Litigation-related costs (2) 0
Restructuring and other costs (3) 0
Spin-off and separation-related costs (4) (9)
Unallocated corporate costs (56) (30)
Other non-operating income (expense), net 1 1
Total reconciling items (393) (377)
Loss before income tax benefit (145) (133)
Operating Segments    
Segment Reporting Information [Line Items]    
Total Revenues 2,178 2,081
Cost of revenues: 1,742 1,645
Total other segment expenses 188 192
Total Segment Adjusted EBITDA 248 244
Building Materials | Operating Segments    
Segment Reporting Information [Line Items]    
Total Revenues 1,500 1,329
Cost of revenues: 1,231 1,118
Total other segment expenses 99 91
Total Segment Adjusted EBITDA 170 120
Building Envelope    
Segment Reporting Information [Line Items]    
Total Revenues 678 752
Building Envelope | Operating Segments    
Segment Reporting Information [Line Items]    
Total Revenues 678 752
Cost of revenues: 511 527
Total other segment expenses 89 101
Total Segment Adjusted EBITDA $ 78 $ 124