v3.26.1
GOODWILL AND OTHER INTANGIBLE ASSETS - ROLLFORWARD (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Gross Goodwill [Roll Forward]    
Goodwill, gross, beginning balance $ 3,796  
Divestiture (7)  
Foreign currency translation 16  
Goodwill, gross, ending balance 3,773  
Accumulated Impairment Loss [Roll Forward]    
Goodwill, Impaired, Accumulated Impairment Loss 2,117  
Foreign currency translation 8  
Goodwill, Impaired, Accumulated Impairment Loss 2,109  
Goodwill, net 1,664 $ 1,679
Roofing    
Gross Goodwill [Roll Forward]    
Goodwill, gross, beginning balance 661  
Divestiture 0  
Foreign currency translation 1  
Goodwill, gross, ending balance 660  
Accumulated Impairment Loss [Roll Forward]    
Goodwill, Impaired, Accumulated Impairment Loss 0  
Foreign currency translation 0  
Goodwill, Impaired, Accumulated Impairment Loss 0  
Goodwill, net 660  
Doors    
Gross Goodwill [Roll Forward]    
Goodwill, gross, beginning balance 1,515  
Divestiture (7)  
Foreign currency translation 3  
Goodwill, gross, ending balance 1,505  
Accumulated Impairment Loss [Roll Forward]    
Goodwill, Impaired, Accumulated Impairment Loss 1,135  
Foreign currency translation 0  
Goodwill, Impaired, Accumulated Impairment Loss 1,135  
Goodwill, net 370  
Insulation    
Gross Goodwill [Roll Forward]    
Goodwill, gross, beginning balance 1,620  
Divestiture 0  
Foreign currency translation 12  
Goodwill, gross, ending balance 1,608  
Accumulated Impairment Loss [Roll Forward]    
Goodwill, Impaired, Accumulated Impairment Loss 982  
Foreign currency translation 8  
Goodwill, Impaired, Accumulated Impairment Loss 974  
Goodwill, net $ 634