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Goodwill - Schedule of Change in Carrying Amount of Goodwill (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Goodwill [Line Items]    
Beginning Balance $ 785,305 $ 769,022
Acquisitions 645,100 16,283
Gypsum Divestiture (9,924)  
Ending Balance 3,270,192 $ 785,305
All Other Acquisitions    
Goodwill [Line Items]    
Acquisitions 743,207  
BMC Merger    
Goodwill [Line Items]    
Acquisitions $ 1,751,604