v3.22.4
Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Jan. 01, 2022
Jan. 02, 2021
Income Taxes [Line Items]      
Deferred tax assets subject to TRA $ 363,900,000    
Income tax expense 85,545,000 $ 44,356,000 $ (12,185,000)
Unrecognized tax benefits that if recognized would affect the annual effective tax rate 0 0  
Deferred tax asset, valuation allowance 1,113,000 1,675,000 1,675,000
Deferred tax asset, Investment in limited partnership 300,000 13,700,000  
Tax receivable agreement expense (benefit) 1,566,000 (6,779,000) (7,559,000)
Tax receivable agreement liability 327,812,000 326,548,000  
Penalties and interest expense 0 0 0
Summit Holdings LP      
Income Taxes [Line Items]      
Distributions to LP Unitholders 700,000 0  
Summit Materials, LLC      
Income Taxes [Line Items]      
Income tax expense 16,585,000 20,949,000 1,063,000
Net operating loss carryforwards 5,200,000    
Deferred tax asset, valuation allowance 1,113,000 1,675,000 $ 1,675,000
Penalties and interest expense 0 0  
Tax Receivable Agreement      
Income Taxes [Line Items]      
Tax receivable agreement liability $ 328,400,000 $ 326,500,000  
Tax Receivable Agreement | Summit Holdings LP      
Income Taxes [Line Items]      
Percentage of benefits to be paid on tax receivable agreement 85.00%    
Federal      
Income Taxes [Line Items]      
Net operating loss carryforwards $ 813,000,000    
Federal | Tax Receivable Agreement      
Income Taxes [Line Items]      
Net operating loss carryforwards $ 660,000,000