Consolidated Balance Sheets - Summit Materials Inc (Parenthetical) - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Accumulated depreciation, depletion and amortization	$ 1,352,008	$ 1,267,557
Accumulated amortization	17,321	15,503
Valuation allowance	$ 1,113	$ 1,113
Common Class A
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	118,886,274	118,408,655
Common stock, shares outstanding (in shares)	118,886,274	118,408,655
Common Class B
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	99	99
Common stock, shares outstanding (in shares)		99