v3.22.4
Consolidated Statements of Changes in Member's Interest - Summit Materials LLC - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Jan. 01, 2022
Jan. 02, 2021
Increase (Decrease) In Stockholders' Equity [Rollforward]      
Net income $ 275,943 $ 154,281 $ 141,240
Other comprehensive income (loss), net of tax (4,059) 1,942 1,813
Share-based compensation 18,347 19,705 28,857
Shares redeemed to settle taxes and other (8) (1,435) (1,458)
Accumulated Deficit      
Increase (Decrease) In Stockholders' Equity [Rollforward]      
Net income 272,145 152,184 137,967
Accumulated Other Comprehensive Income (Loss)      
Increase (Decrease) In Stockholders' Equity [Rollforward]      
Other comprehensive income (loss), net of tax (3,999) 1,880 1,755
Summit Materials, LLC      
Increase (Decrease) In Stockholders' Equity [Rollforward]      
Beginning balance members' interest 1,884,944 1,662,768 1,513,150
Net contributed capital (41,508) 32,451 1,043
Net income 346,137 170,971 120,737
Other comprehensive income (loss), net of tax (5,350) 2,557 2,388
Distributions (59,392) (2,500) (2,500)
Share-based compensation 18,347 19,705 28,857
Shares redeemed to settle taxes and other (28) (1,008) (907)
Ending balance members' interest 2,143,150 1,884,944 1,662,768
Summit Materials, LLC | Members' equity      
Increase (Decrease) In Stockholders' Equity [Rollforward]      
Beginning balance members' interest 1,507,859 1,459,211 1,432,718
Net contributed capital (41,508) 32,451 1,043
Distributions (59,392) (2,500) (2,500)
Share-based compensation 18,347 19,705 28,857
Shares redeemed to settle taxes and other (28) (1,008) (907)
Ending balance members' interest 1,425,278 1,507,859 1,459,211
Summit Materials, LLC | Accumulated Deficit      
Increase (Decrease) In Stockholders' Equity [Rollforward]      
Beginning balance members' interest 393,111 222,140 101,403
Net income 346,137 170,971 120,737
Ending balance members' interest 739,248 393,111 222,140
Summit Materials, LLC | Accumulated Other Comprehensive Income (Loss)      
Increase (Decrease) In Stockholders' Equity [Rollforward]      
Beginning balance members' interest (16,026) (18,583) (20,971)
Other comprehensive income (loss), net of tax (5,350) 2,557 2,388
Ending balance members' interest $ (21,376) $ (16,026) $ (18,583)