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Accrued Mining and Landfill Reclamation (Tables)
12 Months Ended
Dec. 30, 2023
Asset Retirement Obligations [Line Items]  
Activity for Asset Retirement Obligations The following table presents the activity for the asset retirement obligations for the years ended December 30, 2023 and December 31, 2022: 
 20232022
Beginning balance$40,259 $45,051 
Acquired obligations802 739 
Change in cost estimate8,316 (1,238)
Settlement of reclamation obligations(2,295)(2,756)
Dispositions(309)(4,150)
Accretion expense3,132 2,613 
Ending balance$49,905 $40,259 
Summit Materials, LLC  
Asset Retirement Obligations [Line Items]  
Activity for Asset Retirement Obligations The following table presents the activity for the asset retirement obligations for the years ended December 30, 2023 and December 31, 2022:
 20232022
Beginning balance$40,259 $45,051 
Acquired obligations802 739 
Change in cost estimate8,316 (1,238)
Settlement of reclamation obligations(2,295)(2,756)
Dispositions(309)(4,150)
Accretion expense3,132 2,613 
Ending balance$49,905 $40,259