Summit Materials (SUM) 10-Q 3 Aug 23 2023 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jul. 01, 2023	Jul. 31, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jul. 01, 2023
Document Transition Report	false
Entity File Number	001-36873
Entity Registrant Name	SUMMIT MATERIALS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-1984212
Entity Address, Address Line One	1801 California Street
Entity Address, Address Line Two	Suite 3500
Entity Address, City or Town	Denver
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80202
City Area Code	303
Local Phone Number	893-0012
Title of 12(b) Security	Class A Common Stock (par value $.01 per share)
Trading Symbol	SUM
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001621563
Amendment Flag	false
Current Fiscal Year End Date	--12-30
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		118,929,412
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		99
Summit Materials, LLC
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jul. 01, 2023
Document Transition Report	false
Entity File Number	333-187556
Entity Registrant Name	SUMMIT MATERIALS, LLC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-4138486
Entity Address, Address Line One	1801 California Street
Entity Address, Address Line Two	Suite 3500
Entity Address, City or Town	Denver
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80202
Local Phone Number	893-0012
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001571371
Amendment Flag	false
Current Fiscal Year End Date	--12-30
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2

Consolidated Balance Sheets - S

Consolidated Balance Sheets - Summit Materials Inc - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 230,010	$ 520,451
Accounts receivable, net	370,504	256,669
Costs and estimated earnings in excess of billings	35,315	6,510
Inventories	246,275	212,491
Other current assets	22,336	20,787
Current assets held for sale	1,862	1,468
Total current assets	906,302	1,018,376
Property, plant and equipment, less accumulated depreciation, depletion and amortization (July 1, 2023 - $1,352,008 and December 31, 2022 - $1,267,557)	1,979,986	1,813,702
Goodwill	1,228,468	1,132,546
Intangible assets, less accumulated amortization (July 1, 2023 - $17,321 and December 31, 2022 - $15,503)	69,714	71,384
Deferred tax assets, less valuation allowance (July 1, 2023 - $1,113 and December 31, 2022 - $1,113)	126,817	136,986
Operating lease right-of-use assets	36,013	37,889
Other assets	48,187	44,809
Total assets	4,395,487	4,255,692
Current liabilities:
Current portion of debt	5,096	5,096
Current portion of acquisition-related liabilities	7,243	13,718
Accounts payable	171,221	104,031
Accrued expenses	148,660	119,967
Current operating lease liabilities	7,707	7,296
Billings in excess of costs and estimated earnings	7,054	5,739
Total current liabilities	346,981	255,847
Long-term debt	1,487,289	1,488,569
Acquisition-related liabilities	23,503	29,051
Tax receivable agreement liability	322,624	327,812
Noncurrent operating lease liabilities	33,563	35,737
Other noncurrent liabilities	107,563	106,686
Total liabilities	2,321,523	2,243,702
Commitments and contingencies (see note 12)
Stockholders’ equity:
Additional paid-in capital	1,409,364	1,404,122
Accumulated earnings	643,728	590,895
Accumulated other comprehensive income	6,326	3,084
Stockholders’ equity	2,060,608	1,999,286
Noncontrolling interest in Summit Holdings	13,356	12,704
Total stockholders’ equity	2,073,964	2,011,990
Total liabilities and members' interest	4,395,487	4,255,692
Common Class A
Stockholders’ equity:
Common stock	1,190	1,185
Common Class B
Stockholders’ equity:
Common stock	$ 0	$ 0

Consolidated Balance Sheets -_2

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

Consolidated Balance Sheets -_3

Consolidated Balance Sheets - Summit Materials LLC - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 230,010	$ 520,451
Accounts receivable, net	370,504	256,669
Cost and estimated earnings in excess of billings	35,315	6,510
Inventories	246,275	212,491
Other current assets	22,336	20,787
Current assets held for sale	1,862	1,468
Total current assets	906,302	1,018,376
Property, plant and equipment, less accumulated depreciation, depletion and amortization (July 1, 2023 - $1,352,008 and December 31, 2022 - $1,267,557)	1,979,986	1,813,702
Goodwill	1,228,468	1,132,546
Intangible assets, less accumulated amortization (July 1, 2023 - $17,321 and December 31, 2022 - $15,503)	69,714	71,384
Operating lease right-of-use assets	36,013	37,889
Other assets	48,187	44,809
Total assets	4,395,487	4,255,692
Current liabilities:
Current portion of debt	5,096	5,096
Current portion of acquisition-related liabilities	7,243	13,718
Accounts payable	171,221	104,031
Accrued expenses	148,660	119,967
Current operating lease liabilities	7,707	7,296
Billings in excess of costs and estimated earnings	7,054	5,739
Total current liabilities	346,981	255,847
Long-term debt	1,487,289	1,488,569
Acquisition-related liabilities	23,503	29,051
Noncurrent operating lease liabilities	33,563	35,737
Other noncurrent liabilities	107,563	106,686
Total liabilities	2,321,523	2,243,702
Commitments and contingencies (see note 11)
Stockholders’ equity:
Accumulated earnings	643,728	590,895
Accumulated other comprehensive loss	6,326	3,084
Total liabilities and members' interest	4,395,487	4,255,692
Summit Materials, LLC
Current assets:
Cash and cash equivalents	230,010	520,451
Accounts receivable, net	370,504	256,669
Cost and estimated earnings in excess of billings	35,315	6,510
Inventories	246,275	212,491
Other current assets	22,336	20,787
Current assets held for sale	1,862	1,468
Total current assets	906,302	1,018,376
Property, plant and equipment, less accumulated depreciation, depletion and amortization (July 1, 2023 - $1,352,008 and December 31, 2022 - $1,267,557)	1,979,986	1,813,702
Goodwill	1,229,468	1,133,546
Intangible assets, less accumulated amortization (July 1, 2023 - $17,321 and December 31, 2022 - $15,503)	69,714	71,384
Operating lease right-of-use assets	36,013	37,889
Other assets	48,187	44,809
Total assets	4,269,670	4,119,706
Current liabilities:
Current portion of debt	5,096	5,096
Current portion of acquisition-related liabilities	7,243	13,718
Accounts payable	171,076	104,430
Accrued expenses	144,745	120,708
Current operating lease liabilities	7,707	7,296
Billings in excess of costs and estimated earnings	7,054	5,739
Total current liabilities	342,921	256,987
Long-term debt	1,487,289	1,488,569
Acquisition-related liabilities	23,503	29,051
Noncurrent operating lease liabilities	33,563	35,737
Other noncurrent liabilities	167,090	166,212
Total liabilities	2,054,366	1,976,556
Commitments and contingencies (see note 11)
Stockholders’ equity:
Members' equity	1,430,448	1,425,278
Accumulated earnings	802,127	739,248
Accumulated other comprehensive loss	(17,271)	(21,376)
Total members' interest	2,215,304	2,143,150
Total liabilities and members' interest	$ 4,269,670	$ 4,119,706

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Operations - Summit Materials Inc - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Revenue:
Total revenue	$ 729,150	$ 686,554	$ 1,164,538	$ 1,107,501
Cost of revenue (excluding items shown separately below):
Total cost of revenue	492,403	484,205	846,440	837,585
General and administrative expenses	55,550	47,651	101,912	99,575
Depreciation, depletion, amortization and accretion	54,787	47,157	105,681	98,350
Gain on sale of property, plant and equipment	(3,223)	(3,695)	(3,653)	(4,950)
Operating income	129,633	111,236	114,158	76,941
Interest expense	27,902	20,599	55,322	40,748
Loss on debt financings	0	0	493	0
Tax receivable agreement expense	0	954	0	954
Gain on sale of businesses	0	(156,053)	0	(170,258)
Other income, net	(5,478)	(977)	(11,188)	(1,673)
Income from operations before taxes	107,209	246,713	69,531	207,170
Income tax expense	22,481	53,947	16,015	49,204
Net income	84,728	192,766	53,516	157,966
Net income attributable to noncontrolling interest in Summit Holdings	1,091	2,653	683	2,145
Net income attributable to Summit Inc.	$ 83,637	$ 190,113	$ 52,833	$ 155,821
Common Class A
Earnings per share of Class A common stock:
Basic (in usd per share)	$ 0.70	$ 1.58	$ 0.44	$ 1.29
Diluted (in usd per share)	$ 0.70	$ 1.58	$ 0.44	$ 1.28
Weighted average shares of Class A common stock:
Basic (in shares)	118,848,214	120,078,273	118,706,385	120,417,414
Diluted (in shares)	119,393,709	120,660,721	119,431,604	121,374,168
Common Class A And Restricted Stock
Earnings per share of Class A common stock:
Basic (in usd per share)	$ 0.70	$ 1.58	$ 0.44	$ 1.29
Weighted average shares of Class A common stock:
Basic (in shares)	118,931,914	120,222,094	118,805,785	120,569,387
Excluding delivery and subcontract revenue
Revenue:
Total revenue	$ 680,373	$ 631,918	$ 1,087,643	$ 1,024,413
Cost of revenue (excluding items shown separately below):
Total cost of revenue	443,626	429,569	769,545	754,497
Product
Revenue:
Total revenue	595,714	542,939	967,886	898,608
Cost of revenue (excluding items shown separately below):
Total cost of revenue	377,634	360,356	673,515	650,701
Service
Revenue:
Total revenue	84,659	88,979	119,757	125,805
Cost of revenue (excluding items shown separately below):
Total cost of revenue	65,992	69,213	96,030	103,796
Delivery and subcontract revenue
Revenue:
Total revenue	48,777	54,636	76,895	83,088
Cost of revenue (excluding items shown separately below):
Total cost of revenue	$ 48,777	$ 54,636	$ 76,895	$ 83,088

Unaudited Consolidated Statem_2

Unaudited Consolidated Statements of Operations - Summit Materials LLC - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Revenue:
Total revenue	$ 729,150	$ 686,554	$ 1,164,538	$ 1,107,501
Cost of revenue (excluding items shown separately below):
Total cost of revenue	492,403	484,205	846,440	837,585
General and administrative expenses	55,550	47,651	101,912	99,575
Depreciation, depletion, amortization and accretion	54,787	47,157	105,681	98,350
Gain on sale of property, plant and equipment	(3,223)	(3,695)	(3,653)	(4,950)
Operating income	129,633	111,236	114,158	76,941
Interest expense	27,902	20,599	55,322	40,748
Loss on debt financings	0	0	493	0
Gain on sale of businesses	0	(156,053)	0	(170,258)
Other income, net	(5,478)	(977)	(11,188)	(1,673)
Income from operations before taxes	107,209	246,713	69,531	207,170
Income tax expense	22,481	53,947	16,015	49,204
Net income attributable to Summit Inc.	83,637	190,113	52,833	155,821
Summit Materials, LLC
Revenue:
Total revenue	729,150	686,554	1,164,538	1,107,501
Cost of revenue (excluding items shown separately below):
Total cost of revenue	492,403	484,205	846,440	837,585
General and administrative expenses	55,550	47,651	101,912	99,575
Depreciation, depletion, amortization and accretion	54,787	47,157	105,681	98,350
Gain on sale of property, plant and equipment	(3,223)	(3,695)	(3,653)	(4,950)
Operating income	129,633	111,236	114,158	76,941
Interest expense	27,902	20,599	55,322	40,748
Loss on debt financings	0	0	493	0
Gain on sale of businesses	0	(156,053)	0	(170,258)
Other income, net	(5,478)	(977)	(11,188)	(1,673)
Income from operations before taxes	107,209	247,667	69,531	208,124
Income tax expense	7,119	5,566	6,652	12,410
Net income attributable to Summit Inc.	100,090	242,101	62,879	195,714
Excluding delivery and subcontract revenue
Revenue:
Total revenue	680,373	631,918	1,087,643	1,024,413
Cost of revenue (excluding items shown separately below):
Total cost of revenue	443,626	429,569	769,545	754,497
Excluding delivery and subcontract revenue | Summit Materials, LLC
Revenue:
Total revenue	680,373	631,918	1,087,643	1,024,413
Cost of revenue (excluding items shown separately below):
Total cost of revenue	443,626	429,569	769,545	754,497
Product
Revenue:
Total revenue	595,714	542,939	967,886	898,608
Cost of revenue (excluding items shown separately below):
Total cost of revenue	377,634	360,356	673,515	650,701
Product | Summit Materials, LLC
Revenue:
Total revenue	595,714	542,939	967,886	898,608
Cost of revenue (excluding items shown separately below):
Total cost of revenue	377,634	360,356	673,515	650,701
Service
Revenue:
Total revenue	84,659	88,979	119,757	125,805
Cost of revenue (excluding items shown separately below):
Total cost of revenue	65,992	69,213	96,030	103,796
Service | Summit Materials, LLC
Revenue:
Total revenue	84,659	88,979	119,757	125,805
Cost of revenue (excluding items shown separately below):
Total cost of revenue	65,992	69,213	96,030	103,796
Delivery and subcontract revenue
Revenue:
Total revenue	48,777	54,636	76,895	83,088
Cost of revenue (excluding items shown separately below):
Total cost of revenue	48,777	54,636	76,895	83,088
Delivery and subcontract revenue | Summit Materials, LLC
Revenue:
Total revenue	48,777	54,636	76,895	83,088
Cost of revenue (excluding items shown separately below):
Total cost of revenue	$ 48,777	$ 54,636	$ 76,895	$ 83,088

Unaudited Consolidated Statem_3

Unaudited Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Comprehensive income (loss)
Net income	$ 84,728	$ 192,766	$ 53,516	$ 157,966
Other comprehensive income (loss):
Foreign currency translation adjustment	3,902	(5,610)	4,105	(3,866)
Less tax effect of other comprehensive (loss) income items	(779)	1,353	(818)	934
Other comprehensive income (loss)	3,123	(4,257)	3,287	(2,932)
Comprehensive income	87,851	188,509	56,803	155,034
Less comprehensive income attributable to Summit Holdings	1,133	2,592	728	2,103
Comprehensive income attributable to Summit Inc.	$ 86,718	$ 185,917	$ 56,075	$ 152,931

Unaudited Consolidated Statem_4

Unaudited Consolidated Statements of Comprehensive Income - Summit Materials LLC - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Net income	$ 84,728	$ 192,766	$ 53,516	$ 157,966
Other comprehensive income (loss):
Foreign currency translation adjustment	3,902	(5,610)	4,105	(3,866)
Comprehensive income attributable to Summit Inc.	86,718	185,917	56,075	152,931
Summit Materials, LLC
Net income	100,090	242,101	62,879	195,714
Other comprehensive income (loss):
Foreign currency translation adjustment	3,902	(5,610)	4,105	(3,866)
Comprehensive income attributable to Summit Inc.	$ 103,992	$ 236,491	$ 66,984	$ 191,848

Unaudited Consolidated Statem_5

Unaudited Consolidated Statements of Cash Flows - Summit Materials Inc - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022
Cash flows from operating activities:
Net income	$ 53,516	$ 157,966
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion, amortization and accretion	110,659	107,511
Share-based compensation expense	9,924	10,156
Net gain on asset and business disposals	(3,655)	(174,902)
Non-cash loss on debt financings	161	0
Change in deferred tax asset, net	9,350	44,160
Other	(21)	(357)
Decrease (increase) in operating assets, net of acquisitions and dispositions:
Accounts receivable, net	(101,119)	(57,797)
Inventories	(27,115)	(58,092)
Costs and estimated earnings in excess of billings	(28,760)	(36,165)
Other current assets	(1,070)	(2,130)
Other assets	1,732	(593)
(Decrease) increase in operating liabilities, net of acquisitions and dispositions:
Accounts payable	52,157	39,602
Accrued expenses	19,048	(11,108)
Billings in excess of costs and estimated earnings	1,299	(737)
Tax receivable agreement liability	(531)	954
Other liabilities	(1,533)	(2,214)
Net cash provided by operating activities	94,042	16,254
Cash flows from investing activities:
Acquisitions, net of cash acquired	(237,666)	(1,933)
Purchases of property, plant and equipment	(126,893)	(129,580)
Proceeds from the sale of property, plant and equipment	5,760	5,427
Proceeds from sale of businesses	0	341,741
Other	(1,852)	(1,098)
Net cash (used in) provided by investing activities	(360,651)	214,557
Cash flows from financing activities:
Debt issuance costs	(1,566)	0
Payments on debt	(6,720)	(86,821)
Payments on acquisition-related liabilities	(11,539)	(11,577)
Distributions from partnership	0	(25)
Repurchases of common stock	0	(47,509)
Proceeds from stock option exercises	84	123
Other	(4,838)	(187)
Net cash used in financing activities	(24,579)	(145,996)
Impact of foreign currency on cash	747	(461)
Net (decrease) increase in cash	(290,441)	84,354
Cash and cash equivalents – beginning of period	520,451	380,961
Cash and cash equivalents – end of period	$ 230,010	$ 465,315

Unaudited Consolidated Statem_6

Unaudited Consolidated Statements of Cash Flows - Summit Materials LLC - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022
Cash flows from operating activities:
Net income	$ 53,516	$ 157,966
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion, amortization and accretion	110,659	107,511
Share-based compensation expense	9,924	10,156
Net gain on asset and business disposals	(3,655)	(174,902)
Non-cash loss on debt financings	161	0
Change in deferred tax asset, net	9,350	44,160
Other	(21)	(357)
Decrease (increase) in operating assets, net of acquisitions and dispositions:
Accounts receivable, net	(101,119)	(57,797)
Inventories	(27,115)	(58,092)
Costs and estimated earnings in excess of billings	(28,760)	(36,165)
Other current assets	(1,070)	(2,130)
Other assets	1,732	(593)
(Decrease) increase in operating liabilities, net of acquisitions and dispositions:
Accounts payable	52,157	39,602
Accrued expenses	19,048	(11,108)
Billings in excess of costs and estimated earnings	1,299	(737)
Other liabilities	(1,533)	(2,214)
Net cash provided by operating activities	94,042	16,254
Cash flows from investing activities:
Acquisitions, net of cash acquired	(237,666)	(1,933)
Purchases of property, plant and equipment	(126,893)	(129,580)
Proceeds from the sale of property, plant and equipment	5,760	5,427
Proceeds from sale of businesses	0	341,741
Other	(1,852)	(1,098)
Net cash (used in) provided by investing activities	(360,651)	214,557
Cash flows from financing activities:
Debt issuance costs	(1,566)	0
Payments on debt	(6,720)	(86,821)
Payments on acquisition-related liabilities	(11,539)	(11,577)
Distributions	0	(25)
Other	(4,838)	(187)
Net cash used in financing activities	(24,579)	(145,996)
Impact of foreign currency on cash	747	(461)
Net (decrease) increase in cash	(290,441)	84,354
Cash and cash equivalents – beginning of period	520,451	380,961
Cash and cash equivalents – end of period	230,010	465,315
Summit Materials, LLC
Cash flows from operating activities:
Net income	62,879	195,714
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion, amortization and accretion	110,659	107,511
Share-based compensation expense	9,924	10,156
Net gain on asset and business disposals	(3,655)	(174,902)
Non-cash loss on debt financings	161	0
Change in deferred tax asset, net	0	7,366
Other	(21)	(357)
Decrease (increase) in operating assets, net of acquisitions and dispositions:
Accounts receivable, net	(101,119)	(57,797)
Inventories	(27,115)	(58,092)
Costs and estimated earnings in excess of billings	(28,760)	(36,165)
Other current assets	(1,070)	(2,130)
Other assets	1,732	(593)
(Decrease) increase in operating liabilities, net of acquisitions and dispositions:
Accounts payable	51,613	39,602
Accrued expenses	19,048	(11,108)
Billings in excess of costs and estimated earnings	1,299	(737)
Other liabilities	(1,533)	(2,214)
Net cash provided by operating activities	94,042	16,254
Cash flows from investing activities:
Acquisitions, net of cash acquired	(237,666)	(1,933)
Purchases of property, plant and equipment	(126,893)	(129,580)
Proceeds from the sale of property, plant and equipment	5,760	5,427
Proceeds from sale of businesses	0	341,741
Other	(1,852)	(1,098)
Net cash (used in) provided by investing activities	(360,651)	214,557
Cash flows from financing activities:
Capital (distributions to) contributions by member	84	(47,386)
Debt issuance costs	(1,566)	0
Payments on debt	(6,720)	(86,821)
Payments on acquisition-related liabilities	(11,539)	(11,577)
Distributions	0	(25)
Other	(4,838)	(187)
Net cash used in financing activities	(24,579)	(145,996)
Impact of foreign currency on cash	747	(461)
Net (decrease) increase in cash	(290,441)	84,354
Cash and cash equivalents – beginning of period	520,451	380,961
Cash and cash equivalents – end of period	$ 230,010	$ 465,315

Unaudited Consolidated Statem_7

Unaudited Consolidated Statements of Changes in Stockholders’ Equity - Summit Materials Inc - USD ($) $ in Thousands	Total	Common Class A	Common Class B	Accumulated Earnings	Accumulated Other Comprehensive Income	Common Stock Common Class A	Common Stock Common Class B	Additional Paid-in Capital	Noncontrolling Interest
Beginning balance at Jan. 01, 2022	$ 1,823,212			$ 478,956	$ 7,083	$ 1,188	$ 0	$ 1,326,340	$ 9,645
Beginning balance (in shares) at Jan. 01, 2022		120,684,322				118,705,108	99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(34,800)			(34,292)					(508)
Other comprehensive income, net of tax	1,325				1,306				19
Stock option exercises (in shares)						1,589
Stock option exercises	27					$ 0		27
Share-based compensation	5,422							5,422
Shares redeemed to settle taxes and other (in shares)						842,029
Shares redeemed to settle taxes and other	(1,180)					$ 8		(1,120)	(68)
Ending balance at Apr. 02, 2022	1,746,497			397,170	8,389	$ 1,181	$ 0	1,330,548	9,209
Ending balance (in shares) at Apr. 02, 2022						118,041,848	99
Beginning balance at Jan. 01, 2022	1,823,212			478,956	7,083	$ 1,188	$ 0	1,326,340	9,645
Beginning balance (in shares) at Jan. 01, 2022		120,684,322				118,705,108	99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	157,966
Other comprehensive income, net of tax	(2,932)
Stock option exercises (in shares)		6,518
Repurchases of common stock	(47,509)			(47,494)		$ (15)		(121)	(121)
Repurchases of common stock, (in shares)		(1,506,878)				(1,506,878)
Shares redeemed to settle taxes and other (in shares)		909,864
Ending balance at Jul. 02, 2022	1,940,802			587,283	4,193	$ 1,182	$ 0	1,336,375	11,769
Ending balance (in shares) at Jul. 02, 2022		120,093,826				118,114,612	99
Beginning balance at Apr. 02, 2022	1,746,497			397,170	8,389	$ 1,181	$ 0	1,330,548	9,209
Beginning balance (in shares) at Apr. 02, 2022						118,041,848	99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	192,766			190,113					2,653
Other comprehensive income, net of tax	(4,257)				(4,196)				(61)
Stock option exercises (in shares)						4,929
Stock option exercises	96					$ 0		96
Share-based compensation	4,734							4,734
Distributions from partnership	(25)								(25)
Shares redeemed to settle taxes and other (in shares)						67,835
Shares redeemed to settle taxes and other	991					$ 1		997	(7)
Ending balance at Jul. 02, 2022	1,940,802			587,283	4,193	$ 1,182	$ 0	1,336,375	11,769
Ending balance (in shares) at Jul. 02, 2022		120,093,826				118,114,612	99
Beginning balance at Dec. 31, 2022	2,011,990			590,895	3,084	$ 1,185	$ 0	1,404,122	12,704
Beginning balance (in shares) at Dec. 31, 2022		118,408,655	99			118,408,655	99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(31,212)			(30,804)					(408)
LP Unit exchanges (in shares)						2,000
LP Unit exchanges	0					$ 0		21	(21)
Other comprehensive income, net of tax	164				161				3
Stock option exercises (in shares)						902
Stock option exercises	15							15
Share-based compensation	4,708							4,708
Shares redeemed to settle taxes and other (in shares)						407,114
Shares redeemed to settle taxes and other	(5,719)					$ 4		(5,680)	(43)
Ending balance at Apr. 01, 2023	1,979,946			560,091	3,245	$ 1,189	$ 0	1,403,186	12,235
Ending balance (in shares) at Apr. 01, 2023						118,818,671	99
Beginning balance at Dec. 31, 2022	2,011,990			590,895	3,084	$ 1,185	$ 0	1,404,122	12,704
Beginning balance (in shares) at Dec. 31, 2022		118,408,655	99			118,408,655	99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	53,516
LP Unit exchanges (in shares)		2,000
Other comprehensive income, net of tax	3,287
Stock option exercises (in shares)		4,240
Shares redeemed to settle taxes and other (in shares)		471,379
Ending balance at Jul. 01, 2023	2,073,964			643,728	6,326	$ 1,190	$ 0	1,409,364	13,356
Ending balance (in shares) at Jul. 01, 2023		118,886,274	99			118,886,274	99
Beginning balance at Apr. 01, 2023	1,979,946			560,091	3,245	$ 1,189	$ 0	1,403,186	12,235
Beginning balance (in shares) at Apr. 01, 2023						118,818,671	99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	84,728			83,637					1,091
Other comprehensive income, net of tax	3,123				3,081				42
Stock option exercises (in shares)						3,338
Stock option exercises	69							69
Share-based compensation	5,216							5,216
Shares redeemed to settle taxes and other (in shares)						64,265
Shares redeemed to settle taxes and other	882					$ 1		893	(12)
Ending balance at Jul. 01, 2023	$ 2,073,964			$ 643,728	$ 6,326	$ 1,190	$ 0	$ 1,409,364	$ 13,356
Ending balance (in shares) at Jul. 01, 2023		118,886,274	99			118,886,274	99

Unaudited Consolidated Statem_8

Unaudited Consolidated Statements of Changes in Members' Interest - Summit Materials LLC - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jul. 01, 2023	Apr. 01, 2023	Jul. 02, 2022	Apr. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 84,728	$ (31,212)	$ 192,766	$ (34,800)	$ 53,516	$ 157,966
Other comprehensive (loss) income	3,123	164	(4,257)	1,325	3,287	(2,932)
Share-based compensation	5,216	4,708	4,734	5,422
Shares redeemed to settle taxes and other	882	(5,719)	991	(1,180)
Summit Materials, LLC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	2,105,146	2,143,150	1,797,061	1,884,944	2,143,150	1,884,944
Net contributed capital	69	15	96	(47,482)
Net income	100,090	(37,211)	242,101	(46,387)	62,879	195,714
Other comprehensive (loss) income	3,902	203	(5,610)	1,744
Distributions			(25)
Share-based compensation	5,216	4,708	4,734	5,422
Shares redeemed to settle taxes and other	881	(5,719)	991	(1,180)
Ending balance	2,215,304	2,105,146	2,039,348	1,797,061	2,215,304	2,039,348
Members' equity | Summit Materials, LLC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,424,282	1,425,278	1,464,619	1,507,859	1,425,278	1,507,859
Net contributed capital	69	15	96	(47,482)
Distributions			(25)
Share-based compensation	5,216	4,708	4,734	5,422
Shares redeemed to settle taxes and other	881	(5,719)	991	(1,180)
Ending balance	1,430,448	1,424,282	1,470,415	1,464,619	1,430,448	1,470,415
Accumulated earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	83,637	(30,804)	190,113	(34,292)
Accumulated earnings | Summit Materials, LLC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	702,037	739,248	346,724	393,111	739,248	393,111
Net income	100,090	(37,211)	242,101	(46,387)
Ending balance	802,127	702,037	588,825	346,724	802,127	588,825
Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive (loss) income	3,081	161	(4,196)	1,306
Accumulated other comprehensive loss | Summit Materials, LLC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(21,173)	(21,376)	(14,282)	(16,026)	(21,376)	(16,026)
Other comprehensive (loss) income	3,902	203	(5,610)	1,744
Ending balance	$ (17,271)	$ (21,173)	$ (19,892)	$ (14,282)	$ (17,271)	$ (19,892)

Consolidated Balance Sheets -_4

Consolidated Balance Sheets - Summit Materials LLC (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
Summit Materials, LLC
Accumulated depreciation, depletion and amortization	1,352,008	1,267,557
Accumulated amortization	$ 17,321	$ 15,503

SUMMARY OF ORGANIZATION AND SIG

SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
	Jul. 01, 2023
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES Summit Materials, Inc. (“Summit Inc.” and, together with its subsidiaries, “Summit,” “we,” “us,” “our” or the “Company”) is a vertically-integrated construction materials company. The Company is engaged in the production and sale of aggregates, cement, ready-mix concrete, asphalt paving mix and concrete products and owns and operates quarries, sand and gravel pits, two cement plants, cement distribution terminals, ready-mix concrete plants, asphalt plants and landfill sites. It is also engaged in paving and related services. The Company’s three operating and reporting segments are the West, East and Cement segments. Substantially all of the Company’s construction materials, products and services are produced, consumed and performed outdoors, primarily in the spring, summer and fall. Seasonal changes and other weather-related conditions can affect the production and sales volumes of its products and delivery of services. Therefore, the financial results for any interim period are typically not indicative of the results expected for the full year. Furthermore, the Company’s sales and earnings are sensitive to national, regional and local economic conditions, weather conditions and to cyclical changes in construction spending, among other factors. Summit Inc. is a holding corporation operating and controlling all of the business and affairs of Summit Materials Holdings L.P. (“Summit Holdings”) and its subsidiaries, and through Summit Holdings conducts its business. Summit Inc. owns the majority of the partnership interests of Summit Holdings (see Note 9, Stockholders’ Equity). Summit Materials, LLC (“Summit LLC”), an indirect wholly owned subsidiary of Summit Holdings, conducts the majority of our operations. Summit Materials Finance Corp. (“Summit Finance”), an indirect wholly owned subsidiary of Summit LLC, has jointly issued our Senior Notes as described below. Basis of Presentation —These unaudited consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures typically included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. These unaudited consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and the notes thereto as of and for the year ended December 31, 2022. The Company continues to follow the accounting policies set forth in those audited consolidated financial statements. Management believes that these consolidated interim financial statements include all adjustments, normal and recurring in nature, that are necessary to present fairly the financial position of the Company as of July 1, 2023, the results of operations for the three and six months ended July 1, 2023 and July 2, 2022 and cash flows for the six months ended July 1, 2023 and July 2, 2022. Principles of Consolidation —The consolidated financial statements include the accounts of Summit Inc. and its majority owned subsidiaries. All intercompany balances and transactions have been eliminated. For a summary of the changes in Summit Inc.’s ownership of Summit Holdings, see Note 9, Stockholders’ Equity. Use of Estimates —Preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, valuation of deferred tax assets, goodwill, intangibles and other long-lived assets, tax receivable agreement ("TRA") liability, pension and other postretirement obligations and asset retirement obligations. Estimates also include revenue earned on contracts and costs to complete contracts. Most of the Company’s paving and related services are performed under fixed unit-price contracts with state and local governmental entities. Management regularly evaluates its estimates and assumptions based on historical experience and other factors, including the current economic environment. As future events and their effects cannot be determined with precision, actual results can differ significantly from estimates made. Changes in estimates, including those resulting from continuing changes in the economic environment, are reflected in the Company’s consolidated financial statements when the change in estimate occurs. Business and Credit Concentrations— The Company’s operations are conducted primarily across 21 U.S. states and in British Columbia, Canada, with the most significant revenue generated in Texas, Utah, Kansas and Missouri. The Company’s accounts receivable consist primarily of amounts due from customers within these areas. Therefore, collection of these accounts is dependent on the economic conditions in the aforementioned states, as well as specific situations affecting individual customers. Credit granted within the Company’s trade areas has been granted to many customers, and management does not believe that a significant concentration of credit exists with respect to any individual customer or group of customers. No single customer accounted for more than 10% of the Company’s total revenue in the three and six months ended July 1, 2023 or July 2, 2022. Revenue Recognition— We earn revenue from the sale of products, which primarily include aggregates, cement, ready-mix concrete and asphalt, but also include concrete products and plastics components, and from the provision of services, which are primarily paving and related services, but also include landfill operations, the receipt and disposal of waste that is converted to fuel for use in our cement plants. Products: Revenue for product sales is recognized when the performance obligation is satisfied, which generally is when the product is shipped. Services: We earn revenue from the provision of services, which are primarily paving and related services, which are typically calculated using monthly progress based on a method similar to percentage of completion or a customer’s engineer review of progress. The majority of our construction service contracts are completed within one year, but may occasionally extend beyond this time frame. The majority of our construction service contracts are for work that occurs mostly during the spring, summer and fall. We generally measure progress toward completion on long-term paving and related services contracts based on the proportion of costs incurred to date relative to total estimated costs at completion. Estimating costs to be incurred for revenue recognition involves the use of various estimating techniques to project costs at completion, and in some cases includes estimates of recoveries asserted against the customer for changes in specifications or other disputes. Earnings per Share— The Company computes basic earnings per share attributable to stockholders by dividing income attributable to Summit Inc. by the weighted-average shares of Class A common stock outstanding. Diluted earnings per share reflects the potential dilution beyond shares for basic earnings per share that could occur if securities or other contracts to issue common stock were exercised, converted into common stock, or resulted in the issuance of common stock that would have shared in the Company’s earnings. Since the Class B common stock has no economic value, those shares are not included in the weighted-average common share amount for basic or diluted earnings per share. In addition, as the shares of Class A common stock are issued by Summit Inc., the earnings and equity interests of noncontrolling interests are not included in basic earnings per share.
Summit Materials, LLC
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES Summit Materials, LLC (“Summit LLC” and, together with its subsidiaries, “Summit,” “we,” “us,” “our” or the “Company”) is a vertically-integrated construction materials company. The Company is engaged in the production and sale of aggregates, cement, ready-mix concrete, asphalt paving mix and concrete products and owns and operates quarries, sand and gravel pits, two cement plants, cement distribution terminals, ready-mix concrete plants, asphalt plants and landfill sites. It is also engaged in paving and related services. The Company’s three operating and reporting segments are the West, East and Cement segments. Substantially all of the Company’s construction materials, products and services are produced, consumed and performed outdoors, primarily in the spring, summer and fall. Seasonal changes and other weather-related conditions can affect the production and sales volumes of its products and delivery of services. Therefore, the financial results for any interim period are typically not indicative of the results expected for the full year. Furthermore, the Company’s sales and earnings are sensitive to national, regional and local economic conditions, weather conditions and to cyclical changes in construction spending, among other factors. Summit LLC is a wholly owned indirect subsidiary of Summit Materials Holdings L.P. (“Summit Holdings”), whose primary owner is Summit Materials, Inc. (“Summit Inc.”). Summit Inc. was formed as a Delaware corporation on September 23, 2014. Its sole material asset is a controlling equity interest in Summit Holdings. Pursuant to a reorganization into a holding company structure (the “Reorganization”) consummated in connection with Summit Inc.’s March 2015 initial public offering, Summit Inc. became a holding corporation operating and controlling all of the business and affairs of Summit Holdings and its subsidiaries, including Summit LLC. Basis of Presentation —These unaudited consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures typically included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. These unaudited consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and the notes thereto as of and for the year ended December 31, 2022. The Company continues to follow the accounting policies set forth in those audited consolidated financial statements. Management believes that these consolidated interim financial statements include all adjustments, normal and recurring in nature, that are necessary to present fairly the financial position of the Company as of July 1, 2023, the results of operations for the three and six months ended July 1, 2023 and July 2, 2022 and cash flows for the six months ended July 1, 2023 and July 2, 2022. Use of Estimates —Preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, valuation of deferred tax assets, goodwill, intangibles and other long-lived assets, pension and other postretirement obligations and asset retirement obligations. Estimates also include revenue earned on contracts and costs to complete contracts. Most of the Company’s paving and related services are performed under fixed unit-price contracts with state and local governmental entities. Management regularly evaluates its estimates and assumptions based on historical experience and other factors, including the current economic environment. As future events and their effects cannot be determined with precision, actual results can differ significantly from estimates made. Changes in estimates, including those resulting from continuing changes in the economic environment, are reflected in the Company’s consolidated financial statements when the change in estimate occurs. Business and Credit Concentrations— The Company’s operations are conducted primarily across 21 U.S. states and in British Columbia, Canada, with the most significant revenue generated in Texas, Utah, Kansas and Missouri. The Company’s accounts receivable consist primarily of amounts due from customers within these areas. Therefore, collection of these accounts is dependent on the economic conditions in the aforementioned states, as well as specific situations affecting individual customers. Credit granted within the Company’s trade areas has been granted to many customers, and management does not believe that a significant concentration of credit exists with respect to any individual customer or group of customers. No single customer accounted for more than 10% of the Company’s total revenue in the three and six months ended July 1, 2023 or July 2, 2022. Revenue Recognition— We earn revenue from the sale of products, which primarily include aggregates, cement, ready-mix concrete and asphalt, but also include concrete products and plastics components, and from the provision of services, which are primarily paving and related services, but also include landfill operations, the receipt and disposal of waste that is converted to fuel for use in our cement plants. Products: Revenue for product sales is recognized when the performance obligation is satisfied, which generally is when the product is shipped. Services: We earn revenue from the provision of services, which are primarily paving and related services, which are typically calculated using monthly progress based on a method similar to percentage of completion or a customer’s engineer review of progress. The majority of our construction service contracts are completed within one year, but may occasionally extend beyond this time frame. The majority of our construction service contracts are for work that occurs mostly during the spring, summer and fall. We generally measure progress toward completion on long-term paving and related services contracts based on the proportion of costs incurred to date relative to total estimated costs at completion. Estimating costs to be incurred for revenue recognition involves the use of various estimating techniques to project costs at completion, and in some cases includes estimates of recoveries asserted against the customer for changes in specifications or other disputes.

ACQUISITIONS, DISPOSTIONS, GOOD

ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES	6 Months Ended
	Jul. 01, 2023
Business Acquisition [Line Items]
ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES	ACQUISITIONS, DISPOSITIONS, GOODWILL AND INTANGIBLES The financial results of each acquisition have been included in the Company’s consolidated results of operations beginning on the respective closing dates of the acquisitions. The Company measures all assets acquired and liabilities assumed at their acquisition-date fair value. Goodwill acquired during a business combination has an indefinite life and is not amortized. The following table summarizes the Company’s acquisitions by region and period: Six months ended Year ended July 1, 2023 December 31, 2022 West 3 — East 1 2 The purchase price allocation, primarily the valuation of property, plant and equipment for the acquisitions completed during the six months ended July 1, 2023, as well as the acquisitions completed during 2022 that occurred after July 2, 2022, have not yet been finalized due to the recent timing of the acquisitions, status of the valuation of property, plant and equipment and finalization of related tax returns. The following table summarizes aggregated information regarding the fair values of the assets acquired and liabilities assumed as of the respective acquisition dates: Six months ended Year ended July 1, 2023 December 31, 2022 Financial assets $ 13,104 $ 297 Inventories 6,521 161 Property, plant and equipment 137,394 30,041 Other assets 458 1,116 Financial liabilities (11,925) (1,120) Other long-term liabilities (768) (1,589) Net assets acquired 144,784 28,906 Goodwill 94,564 — Purchase price 239,348 28,906 Acquisition-related liabilities — (6,176) Other (1,682) — Net cash paid for acquisitions $ 237,666 $ 22,730 Changes in the carrying amount of goodwill, by reportable segment, from December 31, 2022 to July 1, 2023 are summarized as follows: West East Cement Total Balance—December 31, 2022 $ 566,389 $ 361,501 $ 204,656 $ 1,132,546 Acquisitions (1) 94,564 — — 94,564 Foreign currency translation adjustments 1,358 — — 1,358 Balance—July 1, 2023 $ 662,311 $ 361,501 $ 204,656 $ 1,228,468 _______________________________________________________________________ (1) Reflects goodwill from 2023 acquisitions. The Company’s intangible assets subject to amortization are primarily composed of operating permits, mineral lease agreements and reserve rights. Operating permits relate to permitting and zoning rights acquired outside of a business combination. The assets related to mineral lease agreements reflect the submarket royalty rates paid under agreements, primarily for extracting aggregates. The values were determined as of the respective acquisition dates by a comparison of market-royalty rates. The reserve rights relate to aggregate reserves to which the Company has certain rights of ownership, but does not own the reserves. The intangible assets are amortized on a straight-line basis over the lives of the leases or permits. The following table shows intangible assets by type and in total: July 1, 2023 December 31, 2022 Gross Accumulated Net Gross Accumulated Net Operating permits $ 38,677 $ (4,926) $ 33,751 $ 38,677 $ (4,109) $ 34,568 Mineral leases 17,778 (7,228) 10,550 18,091 (7,056) 11,035 Reserve rights 25,586 (4,608) 20,978 25,242 (3,872) 21,370 Other 4,994 (559) 4,435 4,877 (466) 4,411 Total intangible assets $ 87,035 $ (17,321) $ 69,714 $ 86,887 $ (15,503) $ 71,384 Amortization expense totaled $0.9 million and $1.8 million for the three and six months ended July 1, 2023, respectively, and $0.8 million and $1.8 million for the three and six months ended July 2, 2022, respectively. The estimated amortization expense for the intangible assets for each of the five years subsequent to July 1, 2023 is as follows: 2023 (six months) $ 1,999 2024 4,006 2025 3,965 2026 3,916 2027 3,904 2028 3,906 Thereafter 48,018 Total $ 69,714
Summit Materials, LLC
Business Acquisition [Line Items]
ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES	ACQUISITIONS, DISPOSITIONS, GOODWILL AND INTANGIBLES The financial results of each acquisition have been included in the Company’s consolidated results of operations beginning on the respective closing dates of the acquisitions. The Company measures all assets acquired and liabilities assumed at their acquisition-date fair value. Goodwill acquired during a business combination has an indefinite life and is not amortized. The following table summarizes the Company’s acquisitions by region and period: Six months ended Year ended July 1, 2023 December 31, 2022 West 3 — East 1 2 The purchase price allocation, primarily the valuation of property, plant and equipment for the acquisitions completed during the six months ended July 1, 2023, as well as the acquisitions completed during 2022 that occurred after July 2, 2022, have not yet been finalized due to the recent timing of the acquisitions, status of the valuation of property, plant and equipment and finalization of related tax returns. The following table summarizes aggregated information regarding the fair values of the assets acquired and liabilities assumed as of the respective acquisition dates: Six months ended Year ended July 1, 2023 December 31, 2022 Financial assets $ 13,104 $ 297 Inventories 6,521 161 Property, plant and equipment 137,394 30,041 Other assets 458 1,116 Financial liabilities (11,925) (1,120) Other long-term liabilities (768) (1,589) Net assets acquired 144,784 28,906 Goodwill 94,564 — Purchase price 239,348 28,906 Acquisition-related liabilities — (6,176) Other (1,682) — Net cash paid for acquisitions $ 237,666 $ 22,730 Changes in the carrying amount of goodwill, by reportable segment, from December 31, 2022 to July 1, 2023 are summarized as follows: West East Cement Total Balance—December 31, 2022 $ 567,389 $ 361,501 $ 204,656 $ 1,133,546 Acquisitions (1) 94,564 — — 94,564 Foreign currency translation adjustments 1,358 — — 1,358 Balance—July 1, 2023 $ 663,311 $ 361,501 $ 204,656 $ 1,229,468 _______________________________________________________________________ (1) Reflects goodwill from 2023 acquisitions. The Company’s intangible assets subject to amortization are primarily composed of operating permits, mineral lease agreements and reserve rights. Operating permits relate to permitting and zoning rights acquired outside of a business combination. The assets related to mineral lease agreements reflect the submarket royalty rates paid under agreements, primarily for extracting aggregates. The values were determined as of the respective acquisition dates by a comparison of market-royalty rates. The reserve rights relate to aggregate reserves to which the Company has certain rights of ownership, but does not own the reserves. The intangible assets are amortized on a straight-line basis over the lives of the leases or permits. The following table shows intangible assets by type and in total: July 1, 2023 December 31, 2022 Gross Accumulated Net Gross Accumulated Net Operating permits $ 38,677 $ (4,926) $ 33,751 $ 38,677 $ (4,109) $ 34,568 Mineral leases 17,778 (7,228) 10,550 18,091 (7,056) 11,035 Reserve rights 25,586 (4,608) 20,978 25,242 (3,872) 21,370 Other 4,994 (559) 4,435 4,877 (466) 4,411 Total intangible assets $ 87,035 $ (17,321) $ 69,714 $ 86,887 $ (15,503) $ 71,384 Amortization expense totaled $0.9 million and $1.8 million for the three and six months ended July 1, 2023, respectively, and $0.8 million and $1.8 million for the three and six months ended July 2, 2022, respectively The estimated amortization expense for the intangible assets for each of the five years subsequent to July 1, 2023 is as follows: 2023 (six months) $ 1,999 2024 4,006 2025 3,965 2026 3,916 2027 3,904 2028 3,906 Thereafter 48,018 Total $ 69,714

REVENUE RECOGNITION

REVENUE RECOGNITION	6 Months Ended
	Jul. 01, 2023
Revenue from External Customer [Line Items]
REVENUE RECOGNITION	REVENUE RECOGNITION We derive our revenue predominantly by selling construction materials, products and providing paving and related services. Construction materials consist of aggregates and cement. Products consist of related downstream products, including ready-mix concrete, asphalt paving mix and concrete products. Paving and related service revenue is generated primarily from the asphalt paving services that we provide. Revenue by product for the three and six months ended July 1, 2023 and July 2, 2022 is as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Revenue by product*: Aggregates $ 182,512 $ 161,480 $ 326,165 $ 284,873 Cement 103,607 86,815 152,620 129,369 Ready-mix concrete 199,570 183,357 338,348 340,920 Asphalt 91,809 94,141 118,444 111,279 Paving and related services 89,374 98,610 116,558 129,220 Other 62,278 62,151 112,403 111,840 Total revenue $ 729,150 $ 686,554 $ 1,164,538 $ 1,107,501 *Revenue from liquid asphalt terminals is included in asphalt revenue. Accounts receivable, net consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Trade accounts receivable $ 314,590 $ 215,766 Construction contract receivables 52,932 37,067 Retention receivables 10,461 11,048 Accounts receivable 377,983 263,881 Less: Allowance for doubtful accounts (7,479) (7,212) Accounts receivable, net $ 370,504 $ 256,669 Retention receivables are amounts earned by the Company but held by customers until paving and related service contracts and projects are near completion or fully completed. Amounts are generally billed and collected within one year.
Summit Materials, LLC
Revenue from External Customer [Line Items]
REVENUE RECOGNITION	REVENUE RECOGNITION We derive our revenue predominantly by selling construction materials, products and providing paving and related services. Construction materials consist of aggregates and cement. Products consist of related downstream products, including ready-mix concrete, asphalt paving mix and concrete products. Paving and related service revenue is generated primarily from the asphalt paving services that we provide. Revenue by product for the three and six months ended July 1, 2023 and July 2, 2022 is as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Revenue by product*: Aggregates $ 182,512 $ 161,480 $ 326,165 $ 284,873 Cement 103,607 86,815 152,620 129,369 Ready-mix concrete 199,570 183,357 338,348 340,920 Asphalt 91,809 94,141 118,444 111,279 Paving and related services 89,374 98,610 116,558 129,220 Other 62,278 62,151 112,403 111,840 Total revenue $ 729,150 $ 686,554 $ 1,164,538 $ 1,107,501 *Revenue from liquid asphalt terminals is included in asphalt revenue. Accounts receivable, net consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Trade accounts receivable $ 314,590 $ 215,766 Construction contract receivables 52,932 37,067 Retention receivables 10,461 11,048 Accounts receivable 377,983 263,881 Less: Allowance for doubtful accounts (7,479) (7,212) Accounts receivable, net $ 370,504 $ 256,669 Retention receivables are amounts earned by the Company but held by customers until paving and related service contracts and projects are near completion or fully completed. Amounts are generally billed and collected within one year.

INVENTORIES

INVENTORIES	6 Months Ended
	Jul. 01, 2023
Inventory [Line Items]
INVENTORIES	INVENTORIES Inventories consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Aggregate stockpiles $ 157,272 $ 148,347 Finished goods 55,877 33,622 Work in process 9,806 8,191 Raw materials 23,320 22,331 Total $ 246,275 $ 212,491
Summit Materials, LLC
Inventory [Line Items]
INVENTORIES	INVENTORIES Inventories consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Aggregate stockpiles $ 157,272 $ 148,347 Finished goods 55,877 33,622 Work in process 9,806 8,191 Raw materials 23,320 22,331 Total $ 246,275 $ 212,491

ACCRUED EXPENSES

ACCRUED EXPENSES	6 Months Ended
	Jul. 01, 2023
Schedule Of Accrued Expenses [Line Items]
ACCRUED EXPENSES	ACCRUED EXPENSES Accrued expenses consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Interest $ 36,037 $ 24,625 Payroll and benefits 40,602 34,485 Finance lease obligations 3,499 6,959 Insurance 21,314 18,127 Current portion of TRA liability and non-income taxes 13,976 4,360 Deferred asset purchase payments 5,824 5,131 Professional fees 1,755 924 Other (1) 25,653 25,356 Total $ 148,660 $ 119,967 (1) Consists primarily of current portion of asset retirement obligations and miscellaneous accruals.
Summit Materials, LLC
Schedule Of Accrued Expenses [Line Items]
ACCRUED EXPENSES	ACCRUED EXPENSES Accrued expenses consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Interest $ 36,037 $ 24,625 Payroll and benefits 40,602 34,485 Finance lease obligations 3,499 6,959 Insurance 21,314 18,127 Non-income taxes 10,061 5,101 Deferred asset purchase payments 5,824 5,131 Professional fees 1,755 924 Other (1) 25,653 25,356 Total $ 144,745 $ 120,708 _______________________________________________________________________ (1) Consists primarily of current portion of asset retirement obligations and miscellaneous accruals.

DEBT

DEBT	6 Months Ended
	Jul. 01, 2023
Debt Instrument [Line Items]
DEBT	DEBT Debt consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Term Loan, due 2027: $507.0 million and $509.6 million, net of $4.5 million and $5.0 million discount at July 1, 2023 and December 31, 2022, respectively $ 502,511 $ 504,549 6 1 ⁄ 2 % Senior Notes, due 2027 300,000 300,000 5 1 ⁄ 4 % Senior Notes, due 2029 700,000 700,000 Total 1,502,511 1,504,549 Current portion of long-term debt 5,096 5,096 Long-term debt $ 1,497,415 $ 1,499,453 The contractual payments of long-term debt, including current maturities, for the five years subsequent to July 1, 2023, are as follows: 2023 (six months) $ 2,548 2024 3,822 2025 6,369 2026 5,096 2027 789,177 2028 — Thereafter 700,000 Total 1,507,012 Less: Original issue net discount (4,501) Less: Capitalized loan costs (10,126) Total debt $ 1,492,385 Senior Notes — On August 11, 2020, Summit LLC and Summit Finance (together, the “Issuers”) issued $700.0 million in aggregate principal amount of 5.250% senior notes due January 15, 2029 (the “2029 Notes”). The 2029 Notes were issued at 100.0% of their par value with proceeds of $690.4 million, net of related fees and expenses. The 2029 Notes were issued under an indenture dated August 11, 2020 (the "2029 Notes Indenture"). The 2029 Notes Indenture contains covenants limiting, among other things, Summit LLC and its restricted subsidiaries’ ability to incur additional indebtedness or issue certain preferred shares, pay dividends, redeem stock or make other distributions, make certain investments, sell or transfer certain assets, create liens, consolidate, merge, sell or otherwise dispose of all or substantially all of its assets, enter into certain transactions with affiliates, and designate subsidiaries as unrestricted subsidiaries. The 2029 Notes Indenture also contains customary events of default. Interest on the 2029 Notes is payable semi-annually on January 15 and July 15 of each year commencing on January 15, 2021. On March 15, 2019, the Issuers issued $300.0 million in aggregate principal amount of 6.500% senior notes due March 15, 2027 (the “2027 Notes”). The 2027 Notes were issued at 100.0% of their par value with proceeds of $296.3 million, net of related fees and expenses. The 2027 Notes were issued under an indenture dated March 25, 2019, the terms of which are generally consistent with the 2029 Notes Indenture. Interest on the 2027 Notes is payable semi-annually on March 15 and September 15 of each year commencing on September 15, 2019. As of July 1, 2023 and December 31, 2022, the Company was in compliance with all covenants under the applicable indentures. Senior Secured Credit Facilities — Summit LLC has credit facilities that provide for term loans in an aggregate amount of $507.0 million and revolving credit commitments in an aggregate amount of $395.0 million (the “Senior Secured Credit Facilities”). Under the Senior Secured Credit Facilities, required principal repayments of 0.25% of the refinanced aggregate amount of term debt are due on the last business day of each March, June, September and December commencing with the March 2023 payment. The interest rate on the term loan is a variable rate, it was 8.49% as of July 1, 2023. In 2022, the Company repaid $95.6 million of its term loan under provisions related to divestitures of businesses. On December 14, 2022, Summit Materials, LLC entered into Amendment No. 5 to the credit agreement governing the Senior Secured Credit Facilities (the “Credit Agreement”), which among other things, (a) refinanced the existing $509.6 million of existing term loans with new term loans under the Term Loan Facility bearing interest, at Summit LLC’s option, based on either the base rate or Term Secured Overnight Financing Rate ("SOFR") rate and an applicable margin of (i) 2.00% per annum with respect to base rate borrowings and a floor of 1.00% per annum or (ii) 3.00% per annum with respect to Term SOFR borrowings, with a SOFR adjustment of 0.10% per annum and a floor of zero, and (b) extended the maturity date to December 14, 2027. On January 10, 2023, Summit Materials, LLC entered into Amendment No. 6 to the Credit Agreement, which among other things, increased the maximum amount available to $395.0 million and extended the maturity date to January 10, 2028. The revolving credit agreement bears interest per annum equal to a Term SOFR Rate with a SOFR adjustment of 0.10% per annum and a floor of zero. There were no outstanding borrowings under the revolving credit facility as of July 1, 2023 and December 31, 2022, with borrowing capacity of $374.1 million remaining as of July 1, 2023, which is net of $20.9 million of outstanding letters of credit. The outstanding letters of credit are renewed annually and support required bonding on construction projects, large leases, workers compensation claims and the Company’s insurance liabilities. Summit LLC’s Consolidated First Lien Net Leverage Ratio, as such term is defined in the Credit Agreement, should be no greater than 4.75:1.0 as of each quarter-end. As of July 1, 2023 and December 31, 2022, Summit LLC was in compliance with all financial covenants. Summit LLC’s wholly-owned domestic subsidiary companies, subject to certain exclusions and exceptions, are named as subsidiary guarantors of the Senior Notes and the Senior Secured Credit Facilities. In addition, Summit LLC has pledged substantially all of its assets as collateral, subject to certain exclusions and exceptions, for the Senior Secured Credit Facilities. The following table presents the activity for the deferred financing fees for the six months ended July 1, 2023 and July 2, 2022: Deferred financing fees Balance—December 31, 2022 $ 11,489 Loan origination fees 1,566 Amortization (1,227) Write off of deferred financing fees (160) Balance—July 1, 2023 $ 11,668 Balance—January 1, 2022 $ 13,049 Amortization (1,384) Balance—July 2, 2022 $ 11,665 Other —On January 15, 2015, the Company’s wholly-owned subsidiary in British Columbia, Canada entered into an agreement with HSBC Bank Canada, which was amended on November 30, 2020, for a (i) $6.0 million Canadian dollar (“CAD”) revolving credit commitment to be used for operating activities that bears interest per annum equal to the bank’s prime rate plus 0.20%, (ii) $0.5 million CAD revolving credit commitment to be used for capital equipment that bears interest per annum at the bank’s prime rate plus 0.20% and (iii) $1.5 million CAD revolving credit commitment to provide guarantees on behalf of that subsidiary and (iv) $10.0 million CAD revolving foreign exchange facility available to purchase foreign exchange forward contracts. There were no amounts outstanding under this agreement as of July 1, 2023 or December 31, 2022, which may be terminated upon demand.
Summit Materials, LLC
Debt Instrument [Line Items]
DEBT	DEBT Debt consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Term Loan, due 2027: $507.0 million and $509.6 million, net of $4.5 million and $5.0 million discount at July 1, 2023 and December 31, 2022, respectively $ 502,511 $ 504,549 6 1/2 % Senior Notes, due 2027 300,000 300,000 5 1/4 % Senior Notes, due 2029 700,000 700,000 Total 1,502,511 1,504,549 Current portion of long-term debt 5,096 5,096 Long-term debt $ 1,497,415 $ 1,499,453 The contractual payments of long-term debt, including current maturities, for the five years subsequent to July 1, 2023, are as follows: 2023 (six months) $ 2,548 2024 3,822 2025 6,369 2026 5,096 2027 789,177 2028 — Thereafter 700,000 Total 1,507,012 Less: Original issue net discount (4,501) Less: Capitalized loan costs (10,126) Total debt $ 1,492,385 Senior Notes —On August 11, 2020, Summit LLC and Summit Finance (together, the “Issuers”) issued $700.0 million in aggregate principal amount of 5.250% senior notes due January 15, 2029 (the “2029 Notes”). The 2029 Notes were issued at 100.0% of their par value with proceeds of $690.4 million, net of related fees and expenses. The 2029 Notes were issued under an indenture dated August 11, 2020 (the "2029 Notes Indenture"). The 2029 Notes Indenture contains covenants limiting, among other things, Summit LLC and its restricted subsidiaries’ ability to incur additional indebtedness or issue certain preferred shares, pay dividends, redeem stock or make other distributions, make certain investments, sell or transfer certain assets, create liens, consolidate, merge, sell or otherwise dispose of all or substantially all of its assets, enter into certain transactions with affiliates, and designate subsidiaries as unrestricted subsidiaries. The 2029 Notes Indenture also contains customary events of default. Interest on the 2029 Notes is payable semi-annually on January 15 and July 15 of each year commencing on January 15, 2021. On March 15, 2019, the Issuers issued $300.0 million in aggregate principal amount of 6.500% senior notes due March 15, 2027 (the “2027 Notes”). The 2027 Notes were issued at 100.0% of their par value with proceeds of $296.3 million, net of related fees and expenses. The 2027 Notes were issued under an indenture dated March 25, 2019, the terms of which are generally consistent with the 2029 Notes Indenture. Interest on the 2027 Notes is payable semi-annually on March 15 and September 15 of each year commencing on September 15, 2019. As of July 1, 2023 and December 31, 2022, the Company was in compliance with all covenants under the applicable indentures. Senior Secured Credit Facilities — Summit LLC has credit facilities that provide for term loans in an aggregate amount of $507.0 million and revolving credit commitments in an aggregate amount of $395.0 million (the “Senior Secured Credit Facilities”). Under the Senior Secured Credit Facilities, required principal repayments of 0.25% of the refinanced aggregate amount of term debt are due on the last business day of each March, June, September and December commencing with the March 2023 payment. The interest rate on the term loan is a variable rate, it was 8.49% as of July 1, 2023. In 2022, the Company repaid $95.6 million of its term loan under provisions related to divestitures of businesses. On December 14, 2022, Summit Materials, LLC entered into Amendment No. 5 to the credit agreement governing the Senior Secured Credit Facilities (the “Credit Agreement”), which among other things, (a) refinanced the existing $509.6 million of existing term loans with new term loans under the Term Loan Facility bearing interest, at Summit LLC’s option, based on either the base rate or Term Secured Overnight Financing Rate (“SOFR”) rate and an applicable margin of (i) 2.00% per annum with respect to base rate borrowings and a floor of 1.00% per annum or (ii) 3.00% per annum with respect to Term SOFR borrowings, with a SOFR adjustment of 0.10% per annum and a floor of zero, and (b) extended the maturity date to December 14, 2027. On January 10, 2023, Summit Materials, LLC entered into Amendment No. 6 to the Credit Agreement, which among other things, increased the maximum amount available to $395.0 million and extended the maturity date to January 10, 2028. The revolving credit agreement bears interest per annum equal to a Term SOFR Rate with a SOFR adjustment of 0.10% per annum and a floor of zero. There were no outstanding borrowings under the revolving credit facility as of July 1, 2023 and December 31, 2022, with borrowing capacity of $374.1 million remaining as of July 1, 2023, which is net of $20.9 million of outstanding letters of credit. The outstanding letters of credit are renewed annually and support required bonding on construction projects, large leases, workers compensation claims and the Company’s insurance liabilities. Summit LLC’s Consolidated First Lien Net Leverage Ratio, as such term is defined in the Credit Agreement, should be no greater than 4.75:1.0 as of each quarter-end. As of July 1, 2023 and December 31, 2022, Summit LLC was in compliance with all financial covenants. Summit LLC’s wholly-owned domestic subsidiary companies, subject to certain exclusions and exceptions, are named as subsidiary guarantors of the Senior Notes and the Senior Secured Credit Facilities. In addition, Summit LLC has pledged substantially all of its assets as collateral, subject to certain exclusions and exceptions, for the Senior Secured Credit Facilities. The following table presents the activity for the deferred financing fees for the six months ended July 1, 2023 and July 2, 2022: Deferred financing fees Balance—December 31, 2022 $ 11,489 Loan origination fees 1,566 Amortization (1,227) Write off of deferred financing fees (160) Balance—July 1, 2023 $ 11,668 Balance - January 1, 2022 $ 13,049 Amortization (1,384) Balance -July 2, 2022 $ 11,665 Other —On January 15, 2015, the Company’s wholly-owned subsidiary in British Columbia, Canada entered into an agreement with HSBC Bank Canada, which was amended on November 30, 2020, for a (i) $6.0 million Canadian dollar (“CAD”) revolving credit commitment to be used for operating activities that bears interest per annum equal to the bank’s prime rate plus 0.20%, (ii) $0.5 million CAD revolving credit commitment to be used for capital equipment that bears interest per annum at the bank’s prime rate plus 0.20% and (iii) $1.5 million CAD revolving credit commitment to provide guarantees on behalf of that subsidiary and (iv) $10.0 million CAD revolving foreign exchange facility available to purchase foreign exchange forward contracts. There were no amounts outstanding under this agreement as of July 1, 2023 or December 31, 2022, which may be terminated upon demand.

INCOME TAXES

INCOME TAXES	6 Months Ended
	Jul. 01, 2023
Income Taxes [Line Items]
INCOME TAXES	INCOME TAXES Summit Inc.’s tax provision includes its proportional share of Summit Holdings’ tax attributes. Summit Holdings’ subsidiaries are primarily limited liability companies but do include certain entities organized as C corporations and a Canadian subsidiary. The tax attributes related to the limited liability companies are passed on to Summit Holdings and then to its partners, including Summit Inc. The tax attributes associated with the C corporation and Canadian subsidiaries are fully reflected in the Company’s accounts. Our income tax expense was $22.5 million and $16.0 million in the three and six months ended July 1, 2023, respectively, and our income tax expense was $53.9 million and $49.2 million in the three and six months ended July 2, 2022, respectively. The effective tax rate for Summit Inc. differs from the federal statutory tax rate primarily due to (1) tax depletion expense in excess of the expense recorded under U.S. GAAP, (2) basis differences in assets divested, (3) state taxes, (4) the minority interest in the Summit Holdings partnership that is allocated outside of the Company and (5) various other items such as limitations on meals and entertainment, certain stock compensation and other costs. As of July 1, 2023 and December 31, 2022, Summit Inc. had a valuation allowance of $1.1 million in both periods, which relates to certain deferred tax assets in taxable entities where realization is not more likely than not. No material interest or penalties were recognized in income tax expense during the three and six months ended July 1, 2023 and July 2, 2022. Tax Receivable Agreement —The Company is party to a TRA with certain current and former holders of LP Units that provides for the payment by Summit Inc. to exchanging holders of LP Units of 85% of the benefits, if any, that Summit Inc. actually realizes (or, under certain circumstances such as an early termination of the TRA, is deemed to realize) as a result of increases in the tax basis of tangible and intangible assets of Summit Holdings and certain other tax benefits related to entering into the TRA, including tax benefits attributable to payments under the TRA. In the six months ended July 1, 2023, 2,000 LP Units were acquired by Summit Inc. in exchange for an equal number of newly-issued shares of Summit Inc.’s Class A common stock. As of July 1, 2023 and December 31, 2022, we had recorded $327.8 million and $328.4 million of TRA liability, respectively. Tax Distributions – The holders of Summit Holdings’ LP Units, including Summit Inc., incur U.S. federal, state and local income taxes on their share of any taxable income of Summit Holdings. The limited partnership agreement of Summit Holdings provides for pro rata cash distributions (“tax distributions”) to the holders of the LP Units in an amount generally
Summit Materials, LLC
Income Taxes [Line Items]
INCOME TAXES	INCOME TAXES Summit LLC is a limited liability company and passes its tax attributes for federal and state tax purposes to its parent company and is generally not subject to federal or state income tax. However, certain subsidiary entities file federal, state and Canadian income tax returns due to their status as taxable entities in the respective jurisdiction. The effective income tax rate for the C Corporations differs from the statutory federal rate primarily due to (1) tax depletion expense in excess of the expense recorded under U.S. GAAP, (2) basis differences in assets divested, (3) state income taxes and the effect of graduated tax rates and (4) various other items, such as limitations on meals and entertainment and other costs. The effective income tax rate for the Canadian subsidiary is not significantly different from its historical effective tax rate. No material interest or penalties were recognized in income tax expense during the three and six months ended July 1, 2023 and July 2, 2022.

EARNINGS PER SHARE

EARNINGS PER SHARE	6 Months Ended
	Jul. 01, 2023
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE Basic earnings per share is computed by dividing net earnings by the weighted average common shares outstanding and diluted net earnings is computed by dividing net earnings, adjusted for changes in the earnings allocated to Summit Inc. as a result of the assumed conversion of LP Units, by the weighted-average common shares outstanding assuming dilution. The following table shows the calculation of basic and diluted earnings per share: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Net income attributable to Summit Inc. $ 83,637 $ 190,113 $ 52,833 $ 155,821 Weighted average shares of Class A stock outstanding 118,848,214 120,078,273 118,706,385 120,417,414 Add: Nonvested restricted stock awards of retirement eligible shares 83,700 143,821 99,400 151,973 Weighted average shares outstanding 118,931,914 120,222,094 118,805,785 120,569,387 Basic earnings per share $ 0.70 $ 1.58 $ 0.44 $ 1.29 Diluted net income attributable to Summit Inc. $ 83,637 $ 190,113 $ 52,833 $ 155,821 Weighted average shares outstanding 118,931,914 120,222,094 118,805,785 120,569,387 Add: stock options 100,895 76,161 99,102 101,094 Add: warrants 13,194 10,413 12,978 12,844 Add: restricted stock units 193,011 257,454 340,958 533,242 Add: performance stock units 154,695 94,599 172,781 157,601 Weighted average dilutive shares outstanding 119,393,709 120,660,721 119,431,604 121,374,168 Diluted earnings per share $ 0.70 $ 1.58 $ 0.44 $ 1.28 Excluded from the above calculations were the shares noted below as they were antidilutive: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Antidilutive shares: LP Units 1,310,004 1,314,006 1,310,630 1,314,006

STOCKHOLDERS' EQUITY_MEMBERS' I

STOCKHOLDERS' EQUITY/MEMBERS' INTEREST	6 Months Ended
	Jul. 01, 2023
Schedule of Capitalization, Equity [Line Items]
STOCKHOLDERS' EQUITY	STOCKHOLDERS’ EQUITY During 2023, certain limited partners of Summit Holdings exchanged their LP Units for shares of Class A common stock of Summit Inc. In March 2022, our Board of Directors authorized a share repurchase program, whereby we can repurchase up to $250 million of our Class A common stock. As of July 1, 2023, there was $149.0 million available for purchase, upon which they will be retired. The following table summarizes the changes in our ownership of Summit Holdings: Summit Inc. LP Units Total Summit Inc. Balance — December 31, 2022 118,408,655 1,312,004 119,720,659 98.9 % Exchanges during period 2,000 (2,000) — Stock option exercises 4,240 — 4,240 Other equity transactions 471,379 — 471,379 Balance — July 1, 2023 118,886,274 1,310,004 120,196,278 98.9 % Balance — January 1, 2022 120,684,322 1,314,006 121,998,328 98.9 % Stock option exercises 6,518 — 6,518 Repurchases of common stock (1,506,878) — (1,506,878) Other equity transactions 909,864 — 909,864 Balance — July 2, 2022 120,093,826 1,314,006 121,407,832 98.9 % Summit Inc. is Summit Holdings’ primary beneficiary and thus consolidates Summit Holdings in its consolidated financial statements with a corresponding noncontrolling interest reclassification, which was 1.1% and 1.1% as of July 1, 2023 and December 31, 2022, respectively. Accumulated other comprehensive income (loss) —The changes in each component of accumulated other comprehensive income (loss) consisted of the following: Change in Foreign currency Accumulated Balance — December 31, 2022 $ 6,356 $ (3,272) $ 3,084 Foreign currency translation adjustment, net of tax — 3,242 3,242 Balance — July 1, 2023 $ 6,356 $ (30) $ 6,326 Balance — January 1, 2022 $ 1,508 $ 5,575 $ 7,083 Foreign currency translation adjustment, net of tax — (2,890) (2,890) Balance — July 2, 2022 $ 1,508 $ 2,685 $ 4,193
Summit Materials, LLC
Schedule of Capitalization, Equity [Line Items]
MEMBERS' INTEREST	MEMBERS’ INTEREST Accumulated other comprehensive income (loss) —The changes in each component of accumulated other comprehensive income (loss) consisted of the following: Accumulated Foreign currency other Change in translation comprehensive retirement plans adjustments (loss) income Balance — December 31, 2022 $ (762) $ (20,614) $ (21,376) Foreign currency translation adjustment — 4,105 4,105 Balance — July 1, 2023 $ (762) $ (16,509) $ (17,271) Balance — January 1, 2022 $ (7,243) $ (8,783) $ (16,026) Foreign currency translation adjustment — (3,866) (3,866) Balance — July 2, 2022 $ (7,243) $ (12,649) $ (19,892)

SUPPLEMENTAL CASH FLOW INFORMAT

SUPPLEMENTAL CASH FLOW INFORMATION	6 Months Ended
	Jul. 01, 2023
Schedule Of Cash Flow Supplemental [Line Items]
SUPPLEMENTAL CASH FLOW INFORMATION	SUPPLEMENTAL CASH FLOW INFORMATION Supplemental cash flow information is as follows: Six months ended July 1, 2023 July 2, 2022 Cash payments: Interest $ 38,107 $ 36,115 Payments for income taxes, net 6,941 8,503 Operating cash payments on operating leases 4,801 4,652 Operating cash payments on finance leases 282 646 Finance cash payments on finance leases 5,223 11,297 Non cash investing and financing activities: Accrued liabilities for purchases of property, plant and equipment $ 14,994 $ 20,225 Right of use assets obtained in exchange for operating lease obligations 2,050 9,312 Right of use assets obtained in exchange for finance leases obligations 413 258 Exchange of LP Units to shares of Class A common stock 60 —
Summit Materials, LLC
Schedule Of Cash Flow Supplemental [Line Items]
SUPPLEMENTAL CASH FLOW INFORMATION	SUPPLEMENTAL CASH FLOW INFORMATION Supplemental cash flow information is as follows: Six months ended July 1, 2023 July 2, 2022 Cash payments: Interest $ 38,107 $ 36,115 Payments for income taxes, net 6,941 8,503 Operating cash payments on operating leases 4,801 4,652 Operating cash payments on finance leases 282 646 Finance cash payments on finance leases 5,223 11,297 Non cash investing and financing activities: Accrued liabilities for purchases of property, plant and equipment $ 14,994 $ 20,225 Right of use assets obtained in exchange for operating lease obligations 2,050 9,312 Right of use assets obtained in exchange for finance leases obligations 413 258

LEASES

LEASES	6 Months Ended
	Jul. 01, 2023
Lessee, Lease, Description [Line Items]
LEASES	LEASES We lease construction and office equipment, distribution facilities and office space. Leases with an initial term of 12 months or less, including month to month leases, are not recorded on the balance sheet. Lease expense for short-term leases is recognized on a straight line basis over the lease term. For lease agreements we have entered into or reassessed we combine lease and nonlease components. While we also own mineral leases for mining operations, those leases are outside the scope of Accounting Standards Update No. 2016-2, Leases (Topic 842). Assets acquired under finance leases are included in property, plant and equipment. Many of our leases include options to purchase the leased equipment. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
LEASES	LEASES We lease construction and office equipment, distribution facilities and office space. Leases with an initial term of 12 months or less, including month to month leases, are not recorded on the balance sheet. Lease expense for short-term leases is recognized on a straight line basis over the lease term. For lease agreements we have entered into or reassessed we combine lease and nonlease components. While we also own mineral leases for mining operations, those leases are outside the scope of Accounting Standards Update No. 2016-2, Leases (Topic 842). Assets acquired under finance leases are included in property, plant and equipment. Many of our leases include options to purchase the leased equipment. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
Summit Materials, LLC
Lessee, Lease, Description [Line Items]
LEASES	LEASES We lease construction and office equipment, distribution facilities and office space. Leases with an initial term of 12 months or less, including month to month leases, are not recorded on the balance sheet. Lease expense for short-term leases is recognized on a straight line basis over the lease term. For lease agreements we have entered into or reassessed, we combine lease and nonlease components. While we also own mineral leases for mining operations, those leases are outside the scope of Accounting Standards Update No. 2016-2, Leases (Topic 842). Assets acquired under finance leases are included in property, plant and equipment. Many of our leases include options to purchase the leased equipment. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
LEASES	LEASES We lease construction and office equipment, distribution facilities and office space. Leases with an initial term of 12 months or less, including month to month leases, are not recorded on the balance sheet. Lease expense for short-term leases is recognized on a straight line basis over the lease term. For lease agreements we have entered into or reassessed, we combine lease and nonlease components. While we also own mineral leases for mining operations, those leases are outside the scope of Accounting Standards Update No. 2016-2, Leases (Topic 842). Assets acquired under finance leases are included in property, plant and equipment. Many of our leases include options to purchase the leased equipment. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jul. 01, 2023
Loss Contingencies [Line Items]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES The Company is party to certain legal actions arising from the ordinary course of business activities. Accruals are recorded when the outcome is probable and can be reasonably estimated. While the ultimate results of claims and litigation cannot be predicted with certainty, management expects that the ultimate resolution of all current pending or threatened claims and litigation will not have a material effect on the Company’s consolidated financial position, results of operations or liquidity. The Company records legal fees as incurred. In March 2018, we were notified of an investigation by the Canadian Competition Bureau (the “CCB”) into pricing practices by certain asphalt paving contractors in British Columbia, including Winvan Paving, Ltd. (“Winvan”). We believe the investigation is focused on time periods prior to our April 2017 acquisition of Winvan and we are cooperating with the CCB. Although we currently do not believe this matter will have a material adverse effect on our business, financial condition or results of operations, we are currently not able to predict the ultimate outcome or cost of the investigation. Environmental Remediation and Site Restoration —The Company’s operations are subject to and affected by federal, state, provincial and local laws and regulations relating to the environment, health and safety and other regulatory matters. These operations require environmental operating permits, which are subject to modification, renewal and revocation. The Company regularly monitors and reviews its operations, procedures and policies for compliance with these laws and regulations. Despite these compliance efforts, risk of environmental liability is inherent in the operation of the Company’s business, as it is with other companies engaged in similar businesses and there can be no assurance that environmental liabilities or noncompliance will not have a material adverse effect on the Company’s consolidated financial condition, results of operations or liquidity. The Company has asset retirement obligations arising from regulatory and contractual requirements to perform reclamation activities at the time certain quarries and landfills are closed. As of July 1, 2023 and December 31, 2022, $36.6 million and $36.3 million, respectively, were included in other noncurrent liabilities on the consolidated balance sheets and $4.9 million and $4.0 million, respectively, were included in accrued expenses for future reclamation costs. The total undiscounted anticipated costs for site reclamation as of July 1, 2023 and December 31, 2022 were $125.2 million and $124.9 million, respectively. Other —The Company is obligated under various firm purchase commitments for certain raw materials and services that are in the ordinary course of business. Management does not expect any significant changes in the market value of these goods and services during the commitment period that would have a material adverse effect on the financial condition, results of operations and cash flows of the Company. The terms of the purchase commitments generally approximate one year.
Summit Materials, LLC
Loss Contingencies [Line Items]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES The Company is party to certain legal actions arising from the ordinary course of business activities. Accruals are recorded when the outcome is probable and can be reasonably estimated. While the ultimate results of claims and litigation cannot be predicted with certainty, management expects that the ultimate resolution of all current pending or threatened claims and litigation will not have a material effect on the Company’s consolidated financial position, results of operations or liquidity. The Company records legal fees as incurred. In March 2018, we were notified of an investigation by the Canadian Competition Bureau (the “CCB”) into pricing practices by certain asphalt paving contractors in British Columbia, including Winvan Paving, Ltd. (“Winvan”). We believe the investigation is focused on time periods prior to our April 2017 acquisition of Winvan and we are cooperating with the CCB. Although we currently do not believe this matter will have a material adverse effect on our business, financial condition or results of operations, we are currently not able to predict the ultimate outcome or cost of the investigation. Environmental Remediation and Site Restoration —The Company’s operations are subject to and affected by federal, state, provincial and local laws and regulations relating to the environment, health and safety and other regulatory matters. These operations require environmental operating permits, which are subject to modification, renewal and revocation. The Company regularly monitors and reviews its operations, procedures and policies for compliance with these laws and regulations. Despite these compliance efforts, risk of environmental liability is inherent in the operation of the Company’s business, as it is with other companies engaged in similar businesses and there can be no assurance that environmental liabilities or noncompliance will not have a material adverse effect on the Company’s consolidated financial condition, results of operations or liquidity. The Company has asset retirement obligations arising from regulatory and contractual requirements to perform reclamation activities at the time certain quarries and landfills are closed. As of July 1, 2023 and December 31, 2022, $36.6 million and $36.3 million, respectively, were included in other noncurrent liabilities on the consolidated balance sheets and $4.9 million and $4.0 million, respectively, were included in accrued expenses for future reclamation costs. The total undiscounted anticipated costs for site reclamation as of July 1, 2023 and December 31, 2022 were $125.2 million and $124.9 million, respectively. Other —The Company is obligated under various firm purchase commitments for certain raw materials and services that are in the ordinary course of business. Management does not expect any significant changes in the market value of these goods and services during the commitment period that would have a material adverse effect on the financial condition, results of operations and cash flows of the Company. The terms of the purchase commitments generally approximate one year.

FAIR VALUE

FAIR VALUE	6 Months Ended
	Jul. 01, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
FAIR VALUE	FAIR VALUE Fair Value Measurements— Certain acquisitions made by the Company require the payment of contingent amounts of purchase consideration. These payments are contingent on specified operating results being achieved in periods subsequent to the acquisition and will only be made if earn-out thresholds are achieved. Contingent consideration obligations are measured at fair value each reporting period. Any adjustments to fair value are recognized in earnings in the period identified. The fair value of contingent consideration as of July 1, 2023 and December 31, 2022 was: July 1, 2023 December 31, 2022 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 336 $ 336 Acquisition-related liabilities and Other noncurrent liabilities: Contingent consideration $ 5,102 $ 4,981 The fair value of contingent consideration was based on unobservable, or Level 3, inputs, including projected probability-weighted cash payments and a 10.0% discount rate, which reflects a market discount rate. Changes in fair value may occur as a result of a change in actual or projected cash payments, the probability weightings applied by the Company to projected payments or a change in the discount rate. Significant increases or decreases in any of these inputs in isolation could result in a lower, or higher, fair value measurement. There were no material valuation adjustments to contingent consideration as of July 1, 2023 and July 2, 2022. Financial Instruments —The Company’s financial instruments include debt and certain acquisition-related liabilities (deferred consideration and noncompete obligations). The carrying value and fair value of these financial instruments as of July 1, 2023 and December 31, 2022 was: July 1, 2023 December 31, 2022 Fair Value Carrying Value Fair Value Carrying Value Level 1 Long-term debt(1) $ 1,456,913 $ 1,502,511 $ 1,447,673 $ 1,504,549 Level 3 Current portion of deferred consideration and noncompete obligations(2) 6,907 6,907 13,382 13,382 Long term portion of deferred consideration and noncompete obligations(3) 18,401 18,401 24,070 24,070 (1) $5.1 million was included in current portion of debt as of July 1, 2023 and December 31, 2022. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets. The fair value of debt was determined based on observable, or Level 1, inputs, such as interest rates, bond yields and quoted prices in inactive markets. The fair values of the deferred consideration and noncompete obligations were determined based on unobservable, or Level 3, inputs, including the cash payment terms in the purchase agreements and a discount rate reflecting the Company’s credit risk. The discount rate used is generally consistent with that used when the obligations were initially recorded. Securities with a maturity of three months or less are considered cash equivalents and the fair value of these assets approximates their carrying value.
Summit Materials, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
FAIR VALUE	FAIR VALUE Fair Value Measurements— Certain acquisitions made by the Company require the payment of contingent amounts of purchase consideration. These payments are contingent on specified operating results being achieved in periods subsequent to the acquisition and will only be made if earn-out thresholds are achieved. Contingent consideration obligations are measured at fair value each reporting period. Any adjustments to fair value are recognized in earnings in the period identified. The fair value of contingent consideration as of July 1, 2023 and December 31, 2022 was: July 1, 2023 December 31, 2022 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 336 $ 336 Acquisition-related liabilities and Other noncurrent liabilities: Contingent consideration $ 5,102 $ 4,981 The fair value of contingent consideration was based on unobservable, or Level 3, inputs, including projected probability-weighted cash payments and a 10.0% discount rate, which reflects a market discount rate. Changes in fair value may occur as a result of a change in actual or projected cash payments, the probability weightings applied by the Company to projected payments or a change in the discount rate. Significant increases or decreases in any of these inputs in isolation could result in a lower, or higher, fair value measurement. There were no material valuation adjustments to contingent consideration as of July 1, 2023 and July 2, 2022. Financial Instruments —The Company’s financial instruments include debt and certain acquisition-related liabilities (deferred consideration and noncompete obligations). The carrying value and fair value of these financial instruments as of July 1, 2023 and December 31, 2022 was: July 1, 2023 December 31, 2022 Fair Value Carrying Value Fair Value Carrying Value Level 1 Long-term debt(1) $ 1,456,913 $ 1,502,511 $ 1,447,673 $ 1,504,549 Level 3 Current portion of deferred consideration and noncompete obligations(2) 6,907 6,907 13,382 13,382 Long term portion of deferred consideration and noncompete obligations(3) 18,401 18,401 24,070 24,070 (1) $5.1 million was included in current portion of debt as of July 1, 2023 and December 31, 2022. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets. The fair value of debt was determined based on observable, or Level 2, inputs, such as interest rates, bond yields and quoted prices in inactive markets. The fair values of the deferred consideration and noncompete obligations were determined based on unobservable, or Level 3, inputs, including the cash payment terms in the purchase agreements and a discount rate reflecting the Company’s credit risk. The discount rate used is generally consistent with that used when the obligations were initially recorded. Securities with a maturity of three months or less are considered cash equivalents and the fair value of these assets approximates their carrying value.

SEGMENT INFORMATION

SEGMENT INFORMATION	6 Months Ended
	Jul. 01, 2023
Segment Reporting Information [Line Items]
SEGMENT INFORMATION	SEGMENT INFORMATION The Company has three operating segments: West, East and Cement, which are its reporting segments. These segments are consistent with the Company’s management reporting structure. The operating results of each segment are regularly reviewed and evaluated by the Chief Executive Officer, our Company’s Chief Operating Decision Maker (“CODM”). The CODM primarily evaluates the performance of the Company’s segments and allocates resources to them based on a segment profit metric that we call Adjusted EBITDA, which is computed as earnings from operations before interest, taxes, depreciation, depletion, amortization, accretion, and share-based compensation, as well as various other non-recurring, non-cash amounts. The West and East segments have several subsidiaries that are engaged in various activities including quarry mining, aggregate production and contracting. The Cement segment is engaged in the production of Portland cement. Assets employed by each segment include assets directly identified with those operations. Corporate assets consist primarily of cash, property, plant and equipment for corporate operations and other assets not directly identifiable with a reportable business segment. The accounting policies applicable to each segment are consistent with those used in the consolidated financial statements. The following tables display selected financial data for the Company’s reportable business segments as of July 1, 2023 and December 31, 2022 and for the three and six months ended July 1, 2023 and July 2, 2022: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Revenue*: West $ 430,738 $ 383,750 $ 681,620 $ 635,982 East 186,537 209,153 316,926 331,643 Cement 111,875 93,651 165,992 139,876 Total revenue $ 729,150 $ 686,554 $ 1,164,538 $ 1,107,501 *Intercompany sales are immaterial and the presentation above only reflects sales to external customers. Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Income from operations before taxes $ 107,209 $ 246,713 $ 69,531 $ 207,170 Interest expense 27,902 20,599 55,322 40,748 Depreciation, depletion and amortization 54,042 46,455 104,230 96,934 Accretion 745 702 1,451 1,416 Loss on debt financings — — 493 — Tax receivable agreement expense — 954 — 954 Gain on sale of businesses — (156,053) — (170,258) Non-cash compensation 5,216 4,734 9,924 10,156 Other (3,369) (70) (8,005) 177 Total Adjusted EBITDA $ 191,745 $ 164,034 $ 232,946 $ 187,297 Total Adjusted EBITDA by Segment: West $ 104,517 $ 84,644 $ 137,195 $ 117,336 East 47,617 46,694 66,469 54,830 Cement 52,872 43,241 52,882 37,422 Corporate and other (13,261) (10,545) (23,600) (22,291) Total Adjusted EBITDA $ 191,745 $ 164,034 $ 232,946 $ 187,297 Six months ended July 1, 2023 July 2, 2022 Purchases of property, plant and equipment West $ 70,687 $ 58,137 East 30,378 45,910 Cement 19,477 19,875 Total reportable segments 120,542 123,922 Corporate and other 6,351 5,658 Total purchases of property, plant and equipment $ 126,893 $ 129,580 Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Depreciation, depletion, amortization and accretion: West $ 28,144 $ 22,012 $ 54,517 $ 46,587 East 15,718 14,915 31,253 33,210 Cement 9,891 9,460 17,889 17,034 Total reportable segments 53,753 46,387 103,659 96,831 Corporate and other 1,034 770 2,022 1,519 Total depreciation, depletion, amortization and accretion $ 54,787 $ 47,157 $ 105,681 $ 98,350 July 1, 2023 December 31, 2022 Total assets: West $ 1,919,824 $ 1,565,776 East 1,181,536 1,151,223 Cement 924,766 873,604 Total reportable segments 4,026,126 3,590,603 Corporate and other 369,361 665,089 Total $ 4,395,487 $ 4,255,692
Summit Materials, LLC
Segment Reporting Information [Line Items]
SEGMENT INFORMATION	SEGMENT INFORMATION The Company has three operating segments: West, East and Cement, which are its reporting segments. These segments are consistent with the Company’s management reporting structure. The operating results of each segment are regularly reviewed and evaluated by the Chief Executive Officer, our Company’s Chief Operating Decision Maker (“CODM”). The CODM primarily evaluates the performance of the Company’s segments and allocates resources to them based on a segment profit metric that we call Adjusted EBITDA, which is computed as earnings from operations before interest, taxes, depreciation, depletion, amortization, accretion and share-based compensation, as well as various other non-recurring, non-cash amounts. The West and East segments have several subsidiaries that are engaged in various activities including quarry mining, aggregate production and contracting. The Cement segment is engaged in the production of Portland cement. Assets employed by each segment include assets directly identified with those operations. Corporate assets consist primarily of cash, property, plant and equipment for corporate operations and other assets not directly identifiable with a reportable business segment. The accounting policies applicable to each segment are consistent with those used in the consolidated financial statements. The following tables display selected financial data for the Company’s reportable business segments as of July 1, 2023 and December 31, 2022 and for the three and six months ended July 1, 2023 and July 2, 2022: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Revenue*: West $ 430,738 $ 383,750 $ 681,620 $ 635,982 East 186,537 209,153 316,926 331,643 Cement 111,875 93,651 165,992 139,876 Total revenue $ 729,150 $ 686,554 $ 1,164,538 $ 1,107,501 *Intercompany sales are immaterial and the presentation above only reflects sales to external customers. Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Income from operations before taxes $ 107,209 $ 247,667 $ 69,531 $ 208,124 Interest expense 27,902 20,599 55,322 40,748 Depreciation, depletion and amortization 54,042 46,455 104,230 96,934 Accretion 745 702 1,451 1,416 Loss on debt financings — — 493 — Gain on sale of businesses — (156,053) — (170,258) Non-cash compensation 5,216 4,734 9,924 10,156 Other (3,369) (70) (8,005) 177 Total Adjusted EBITDA $ 191,745 $ 164,034 $ 232,946 $ 187,297 Total Adjusted EBITDA by Segment: West $ 104,517 $ 84,644 $ 137,195 $ 117,336 East 47,617 46,694 66,469 54,830 Cement 52,872 43,241 52,882 37,422 Corporate and other (13,261) (10,545) (23,600) (22,291) Total Adjusted EBITDA $ 191,745 $ 164,034 $ 232,946 $ 187,297 Six months ended July 1, 2023 July 2, 2022 Purchases of property, plant and equipment West $ 70,687 $ 58,137 East 30,378 45,910 Cement 19,477 19,875 Total reportable segments 120,542 123,922 Corporate and other 6,351 5,658 Total purchases of property, plant and equipment $ 126,893 $ 129,580 Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Depreciation, depletion, amortization and accretion: West $ 28,144 $ 22,012 $ 54,517 $ 46,587 East 15,718 14,915 31,253 33,210 Cement 9,891 9,460 17,889 17,034 Total reportable segments 53,753 46,387 103,659 96,831 Corporate and other 1,034 770 2,022 1,519 Total depreciation, depletion, amortization and accretion $ 54,787 $ 47,157 $ 105,681 $ 98,350 July 1, 2023 December 31, 2022 Total assets: West $ 1,919,824 $ 1,565,776 East 1,181,536 1,151,223 Cement 924,766 873,604 Total reportable segments 4,026,126 3,590,603 Corporate and other 243,544 529,103 Total $ 4,269,670 $ 4,119,706

GUARANTOR AND NON-GUARANTOR FIN

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION	6 Months Ended
	Jul. 01, 2023
Summit Materials, LLC
Guarantor and Non-Guarantor Financial Information	GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION Summit LLC’s domestic wholly-owned subsidiary companies other than Finance Corp. are named as guarantors (collectively, the “Guarantors”) of the Senior Notes. Finance Corp. does not and will not have any assets or operations other than as may be incidental to its activities as a co-issuer of the Senior Notes and other indebtedness. Certain other partially-owned subsidiaries and a non-U.S. entity do not guarantee the Senior Notes (collectively, the “Non-Guarantors”). The Guarantors provide a joint and several, full and unconditional guarantee of the Senior Notes. There are no significant restrictions on Summit LLC’s ability to obtain funds from any of the Guarantors in the form of dividends or loans. Additionally, there are no significant restrictions on a Guarantor’s ability to obtain funds from Summit LLC or its direct or indirect subsidiaries. The following condensed consolidating balance sheets, statements of operations and cash flows are provided for the Issuers, the Guarantors and the Non-Guarantors. Earnings from subsidiaries are included in other income in the condensed consolidated statements of operations below. The financial information may not necessarily be indicative of the financial position, results of operations or cash flows had the Guarantors or Non-Guarantors operated as independent entities. Condensed Consolidating Balance Sheets July 1, 2023 Non- Issuers Guarantors Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 197,481 $ 5,698 $ 32,206 $ (5,375) $ 230,010 Accounts receivable, net 603 341,501 28,491 (91) 370,504 Intercompany receivables 311,267 1,985,385 — (2,296,652) — Cost and estimated earnings in excess of billings — 33,533 1,782 — 35,315 Inventories — 239,848 6,427 — 246,275 Other current assets 11,596 11,143 1,459 — 24,198 Total current assets 520,947 2,617,108 70,365 (2,302,118) 906,302 Property, plant and equipment, net 27,660 1,871,238 81,088 — 1,979,986 Goodwill — 1,171,500 57,968 — 1,229,468 Intangible assets, net — 65,279 4,435 — 69,714 Operating lease right-of-use assets 4,225 27,149 4,639 — 36,013 Other assets 5,016,546 216,720 810 (5,185,889) 48,187 Total assets $ 5,569,378 $ 5,968,994 $ 219,305 $ (7,488,007) $ 4,269,670 Liabilities and Members' Interest Current liabilities: Current portion of debt $ 5,096 $ — $ — $ — $ 5,096 Current portion of acquisition-related liabilities — 7,243 — — 7,243 Accounts payable 5,622 153,815 11,730 (91) 171,076 Accrued expenses 64,653 82,359 3,108 (5,375) 144,745 Current operating lease liabilities 946 6,099 662 — 7,707 Intercompany payables 1,776,656 516,160 3,836 (2,296,652) — Billings in excess of costs and estimated earnings — 6,313 741 — 7,054 Total current liabilities 1,852,973 771,989 20,077 (2,302,118) 342,921 Long-term debt 1,487,289 — — — 1,487,289 Acquisition-related liabilities — 23,503 — — 23,503 Noncurrent operating lease liabilities 8,315 21,355 3,893 — 33,563 Other noncurrent liabilities 5,497 208,578 117,436 (164,421) 167,090 Total liabilities 3,354,074 1,025,425 141,406 (2,466,539) 2,054,366 Total members' interest 2,215,304 4,943,569 77,899 (5,021,468) 2,215,304 Total liabilities and members' interest $ 5,569,378 $ 5,968,994 $ 219,305 $ (7,488,007) $ 4,269,670 Condensed Consolidating Balance Sheets December 31, 2022 Non- Issuers Guarantors Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 498,307 $ 2,864 $ 26,298 $ (7,018) $ 520,451 Accounts receivable, net 1,528 233,039 22,127 (25) 256,669 Intercompany receivables 329,744 1,937,390 — (2,267,134) — Cost and estimated earnings in excess of billings — 5,861 649 — 6,510 Inventories — 206,418 6,073 — 212,491 Other current assets 4,755 16,341 1,159 — 22,255 Total current assets 834,334 2,401,913 56,306 (2,274,177) 1,018,376 Property, plant and equipment, net 21,306 1,710,972 81,424 — 1,813,702 Goodwill — 1,076,935 56,611 — 1,133,546 Intangible assets, net — 66,972 4,412 — 71,384 Operating lease right-of-use assets 4,665 28,310 4,914 — 37,889 Other assets 4,599,488 204,644 1,220 (4,760,543) 44,809 Total assets $ 5,459,793 $ 5,489,746 $ 204,887 $ (7,034,720) $ 4,119,706 Liabilities and Members' Interest Current liabilities: Current portion of debt $ 5,096 $ — $ — $ — $ 5,096 Current portion of acquisition-related liabilities — 13,718 — — 13,718 Accounts payable 3,553 93,096 7,806 (25) 104,430 Accrued expenses 54,417 70,433 2,876 (7,018) 120,708 Current operating lease liabilities 921 5,637 738 — 7,296 Intercompany payables 1,750,352 513,494 3,288 (2,267,134) — Billings in excess of costs and estimated earnings — 4,956 783 — 5,739 Total current liabilities 1,814,339 701,334 15,491 (2,274,177) 256,987 Long-term debt 1,488,569 — — — 1,488,569 Acquisition-related liabilities — 29,051 — — 29,051 Noncurrent operating lease liabilities 8,726 22,871 4,140 — 35,737 Other noncurrent liabilities 5,009 208,185 117,439 (164,421) 166,212 Total liabilities 3,316,643 961,441 137,070 (2,438,598) 1,976,556 Total members' interest 2,143,150 4,528,305 67,817 (4,596,122) 2,143,150 Total liabilities and members' interest $ 5,459,793 $ 5,489,746 $ 204,887 $ (7,034,720) $ 4,119,706 Condensed Consolidating Statements of Operations For the three months ended July 1, 2023 Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 695,912 $ 34,801 $ (1,563) $ 729,150 Cost of revenue (excluding items shown separately below) — 469,869 24,097 (1,563) 492,403 General and administrative expenses 18,653 32,007 1,667 — 52,327 Depreciation, depletion, amortization and accretion 1,034 50,918 2,835 — 54,787 Operating (loss) income (19,687) 143,118 6,202 — 129,633 Other income, net (160,703) (1,271) (601) 157,097 (5,478) Interest expense (income) 40,430 (13,898) 1,370 — 27,902 Income from operation before taxes 100,586 158,287 5,433 (157,097) 107,209 Income tax expense 496 5,146 1,477 — 7,119 Net income attributable to Summit LLC $ 100,090 $ 153,141 $ 3,956 $ (157,097) $ 100,090 Comprehensive income attributable to member of Summit Materials, LLC $ 103,992 $ 153,141 $ 54 $ (153,195) $ 103,992 Condensed Consolidating Statements of Operations For the six months ended July 1, 2023 Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 1,104,334 $ 62,562 $ (2,358) $ 1,164,538 Cost of revenue (excluding items shown separately below) — 805,079 43,719 (2,358) 846,440 General and administrative expenses 33,873 60,955 3,431 — 98,259 Depreciation, depletion, amortization and accretion 2,022 98,071 5,588 — 105,681 Operating (loss) income (35,895) 140,229 9,824 — 114,158 Other income, net (179,850) (1,547) (1,109) 171,811 (10,695) Interest expense (income) 80,276 (27,694) 2,740 — 55,322 Income from operation before taxes 63,679 169,470 8,193 (171,811) 69,531 Income tax expense 800 3,635 2,217 — 6,652 Net income attributable to Summit LLC $ 62,879 $ 165,835 $ 5,976 $ (171,811) $ 62,879 Comprehensive income attributable to member of Summit Materials, LLC $ 66,984 $ 165,835 $ 1,871 $ (167,706) $ 66,984 Condensed Consolidating Statements of Operations For the three months ended July 2, 2022 Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 656,952 $ 33,762 $ (4,160) $ 686,554 Cost of revenue (excluding items shown separately below) — 464,383 23,982 (4,160) 484,205 General and administrative expenses 15,919 26,426 1,611 — 43,956 Depreciation, depletion, amortization and accretion 769 43,342 3,046 — 47,157 Operating (loss) income (16,688) 122,801 5,123 — 111,236 Other (income) loss, net (166,798) (433) 96 166,158 (977) Interest expense (income) 33,579 (14,350) 1,370 — 20,599 Gain on sale of business (126,601) (29,452) — — (156,053) Income from operation before taxes 243,132 167,036 3,657 (166,158) 247,667 Income tax expense 1,031 3,548 987 — 5,566 Net income attributable to Summit LLC $ 242,101 $ 163,488 $ 2,670 $ (166,158) $ 242,101 Comprehensive income attributable to member of Summit Materials, LLC $ 236,491 $ 163,488 $ 8,280 $ (171,768) $ 236,491 Condensed Consolidating Statements of Operations For the six months ended July 2, 2022 Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 1,052,132 $ 60,859 $ (5,490) $ 1,107,501 Cost of revenue (excluding items shown separately below) — 798,647 44,428 (5,490) 837,585 General and administrative expenses 33,223 58,099 3,303 — 94,625 Depreciation, depletion, amortization and accretion 1,518 90,839 5,993 — 98,350 Operating (loss) income (34,741) 104,547 7,135 — 76,941 Other (income) loss, net (172,716) (986) 89 171,940 (1,673) Interest expense (income) 67,481 (29,473) 2,740 — 40,748 Gain on sale of business (126,601) (43,657) — — (170,258) Income from operation before taxes 197,095 178,663 4,306 (171,940) 208,124 Income tax expense 1,381 9,866 1,163 — 12,410 Net income attributable to Summit LLC $ 195,714 $ 168,797 $ 3,143 $ (171,940) $ 195,714 Comprehensive income attributable to member of Summit Materials, LLC $ 191,848 $ 168,797 $ 7,009 $ (175,806) $ 191,848 Condensed Consolidating Statements of Cash Flows For the six months ended July 1, 2023 Non- Issuers Guarantors Guarantors Eliminations Consolidated Net cash (used in) provided by operating activities $ (62,840) $ 146,620 $ 10,262 $ — $ 94,042 Cash flow from investing activities: Acquisitions, net of cash acquired — (237,666) — — (237,666) Purchase of property, plant and equipment (6,350) (117,310) (3,233) — (126,893) Proceeds from the sale of property, plant, and equipment — 5,435 325 — 5,760 Other — (1,852) — — (1,852) Net cash used in investing activities (6,350) (351,393) (2,908) — (360,651) Cash flow from financing activities: Capital distributions to member (239,264) 239,348 — — 84 Loans received from and payments made on loans from other Summit Companies 13,332 (12,997) (1,978) 1,643 — Payments on long-term debt (2,548) (4,172) — — (6,720) Payments on acquisition-related liabilities — (11,539) — — (11,539) Debt issuance costs (1,566) — — — (1,566) Other (1,590) (3,033) (215) — (4,838) Net cash (used in) provided by financing activities (231,636) 207,607 (2,193) 1,643 (24,579) Impact of cash on foreign currency — — 747 — 747 Net (decrease) increase in cash (300,826) 2,834 5,908 1,643 (290,441) Cash — Beginning of period 498,307 2,864 26,298 (7,018) 520,451 Cash — End of period $ 197,481 $ 5,698 $ 32,206 $ (5,375) $ 230,010 Condensed Consolidating Statements of Cash Flows For the six months ended July 2, 2022 Non- Issuers Guarantors Guarantors Eliminations Consolidated Net cash (used in) provided by operating activities $ (63,758) $ 73,145 $ 6,867 $ — $ 16,254 Cash flow from investing activities: Acquisitions, net of cash acquired — (1,933) — — (1,933) Purchase of property, plant and equipment (5,657) (121,589) (2,334) — (129,580) Proceeds from the sale of property, plant, and equipment — 5,182 245 — 5,427 Proceeds from the sale of a business — 341,741 — — 341,741 Other — (1,098) — — (1,098) Net cash (used in) provided by investing activities (5,657) 222,303 (2,089) — 214,557 Cash flow from financing activities: Capital distributions to member (49,319) 1,933 — — (47,386) Loans received from and payments made on loans from other Summit Companies 275,632 (273,262) (2,991) 621 — Payments on long-term debt (75,553) (11,268) — — (86,821) Payments on acquisition-related liabilities — (11,577) — — (11,577) Distributions from partnership (25) — — — (25) Other (187) — — — (187) Net cash provided by (used in) financing activities 150,548 (294,174) (2,991) 621 (145,996) Impact of cash on foreign currency — — (461) — (461) Net increase in cash 81,133 1,274 1,326 621 84,354 Cash — Beginning of period 365,044 2,264 18,337 (4,684) 380,961 Cash — End of period $ 446,177 $ 3,538 $ 19,663 $ (4,063) $ 465,315

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 83,637	$ 190,113	$ 52,833	$ 155,821

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jul. 01, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

SUMMARY OF ORGANIZATION AND S_2

SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES - (Policies)	6 Months Ended
	Jul. 01, 2023
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Basis of Presentation	Basis of Presentation —These unaudited consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures typically included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. These unaudited consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and the notes thereto as of and for the year ended December 31, 2022. The Company continues to follow the accounting policies set forth in those audited consolidated financial statements. Management believes that these consolidated interim financial statements include all adjustments, normal and recurring in nature, that are necessary to present fairly the financial position of the Company as of July 1, 2023, the results of operations for the three and six months ended July 1, 2023 and July 2, 2022 and cash flows for the six months ended July 1, 2023 and July 2, 2022.
Principles of Consolidation	Principles of Consolidation —The consolidated financial statements include the accounts of Summit Inc. and its majority owned subsidiaries. All intercompany balances and transactions have been eliminated. For a summary of the changes in Summit Inc.’s ownership of Summit Holdings, see Note 9, Stockholders’ Equity.
Use of Estimates	Use of Estimates —Preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, valuation of deferred tax assets, goodwill, intangibles and other long-lived assets, tax receivable agreement ("TRA") liability, pension and other postretirement obligations and asset retirement obligations. Estimates also include revenue earned on contracts and costs to complete contracts. Most of the Company’s paving and related services are performed under fixed unit-price contracts with state and local governmental entities. Management regularly evaluates its estimates and assumptions based on historical experience and other factors, including the current economic environment. As future events and their effects cannot be determined with precision, actual results can differ significantly from estimates made. Changes in estimates, including
Business and Credit Concentrations	Business and Credit Concentrations—The Company’s operations are conducted primarily across 21 U.S. states and in British Columbia, Canada, with the most significant revenue generated in Texas, Utah, Kansas and Missouri. The Company’s accounts receivable consist primarily of amounts due from customers within these areas. Therefore, collection of these accounts is dependent on the economic conditions in the aforementioned states, as well as specific situations affecting individual customers. Credit granted within the Company’s trade areas has been granted to many customers, and management does not believe that a significant concentration of credit exists with respect to any individual customer or group of customers.
Revenue Recognition	Revenue Recognition— We earn revenue from the sale of products, which primarily include aggregates, cement, ready-mix concrete and asphalt, but also include concrete products and plastics components, and from the provision of services, which are primarily paving and related services, but also include landfill operations, the receipt and disposal of waste that is converted to fuel for use in our cement plants. Products: Revenue for product sales is recognized when the performance obligation is satisfied, which generally is when the product is shipped. Services: We earn revenue from the provision of services, which are primarily paving and related services, which are typically calculated using monthly progress based on a method similar to percentage of completion or a customer’s engineer review of progress. The majority of our construction service contracts are completed within one year, but may occasionally extend beyond this time frame. The majority of our construction service contracts are for work that occurs mostly during the spring, summer and fall. We generally measure progress toward completion on long-term paving and related services contracts based on the proportion of costs incurred to date relative to total estimated costs at completion. Estimating costs to be incurred for revenue recognition involves the use of various estimating techniques to project costs at completion, and in some cases includes estimates of recoveries asserted against the customer for changes in specifications or other disputes.
Earnings per Share	Earnings per Share— The Company computes basic earnings per share attributable to stockholders by dividing income attributable to Summit Inc. by the weighted-average shares of Class A common stock outstanding. Diluted earnings per share reflects the potential dilution beyond shares for basic earnings per share that could occur if securities or other contracts to issue common stock were exercised, converted into common stock, or resulted in the issuance of common stock that would have shared in the Company’s earnings. Since the Class B common stock has no economic value, those shares are not included in the weighted-average common share amount for basic or diluted earnings per share. In addition, as the shares of Class A common stock are issued by Summit Inc., the earnings and equity interests of noncontrolling interests are not included in basic earnings per share.
Leases	We lease construction and office equipment, distribution facilities and office space. Leases with an initial term of 12 months or less, including month to month leases, are not recorded on the balance sheet. Lease expense for short-term leases is recognized on a straight line basis over the lease term. For lease agreements we have entered into or reassessed we combine lease and nonlease components. While we also own mineral leases for mining operations, those leases are outside the scope of Accounting Standards Update No. 2016-2, Leases (Topic 842). Assets acquired under finance leases are included in property, plant and equipment.Many of our leases include options to purchase the leased equipment. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants.
Summit Materials, LLC
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Basis of Presentation	Basis of Presentation —These unaudited consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures typically included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. These unaudited consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and the notes thereto as of and for the year ended December 31, 2022. The Company continues to follow the accounting policies set forth in those audited consolidated financial statements. Management believes that these consolidated interim financial statements include all adjustments, normal and recurring in nature, that are necessary to present fairly the financial position of the Company as of July 1, 2023, the results of operations for the three and six months ended July 1, 2023 and July 2, 2022 and cash flows for the six months ended July 1, 2023 and July 2, 2022.
Use of Estimates	Use of Estimates —Preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenue and expenses. Such estimates include the valuation of accounts receivable, inventories, valuation of deferred tax assets, goodwill, intangibles and other long-lived assets, pension and other postretirement obligations and asset retirement obligations. Estimates also include revenue earned on contracts and costs to complete contracts. Most of the Company’s paving and related services are performed under fixed unit-price contracts with state and local governmental entities. Management regularly evaluates its estimates and assumptions based on historical experience and other factors, including the current economic environment. As future events and their effects cannot be determined with precision, actual results can differ significantly from estimates made. Changes in estimates, including those resulting from continuing changes in the economic environment, are reflected in the Company’s consolidated financial statements when the change in estimate occurs.
Business and Credit Concentrations	Business and Credit Concentrations— The Company’s operations are conducted primarily across 21 U.S. states and in British Columbia, Canada, with the most significant revenue generated in Texas, Utah, Kansas and Missouri. The Company’s accounts receivable consist primarily of amounts due from customers within these areas. Therefore, collection of these accounts is dependent on the economic conditions in the aforementioned states, as well as specific situations affecting individual customers. Credit granted within the Company’s trade areas has been granted to many customers, and management does not believe that a significant concentration of credit exists with respect to any individual customer or group of customers. No single customer accounted for more than 10% of the Company’s total revenue in the three and six months ended July 1, 2023 or July 2, 2022.
Revenue Recognition	Revenue Recognition— We earn revenue from the sale of products, which primarily include aggregates, cement, ready-mix concrete and asphalt, but also include concrete products and plastics components, and from the provision of services, which are primarily paving and related services, but also include landfill operations, the receipt and disposal of waste that is converted to fuel for use in our cement plants. Products: Revenue for product sales is recognized when the performance obligation is satisfied, which generally is when the product is shipped. Services: We earn revenue from the provision of services, which are primarily paving and related services, which are typically calculated using monthly progress based on a method similar to percentage of completion or a customer’s engineer review of progress. The majority of our construction service contracts are completed within one year, but may occasionally extend beyond this time frame. The majority of our construction service contracts are for work that occurs mostly during the spring, summer and fall. We generally measure progress toward completion on long-term paving and related services contracts based on the proportion of costs incurred to date relative to total estimated costs at completion. Estimating costs to be incurred for revenue recognition involves the use of various estimating techniques to project costs at completion, and in some cases includes estimates of recoveries asserted against the customer for changes in specifications or other disputes.
Leases	We lease construction and office equipment, distribution facilities and office space. Leases with an initial term of 12 months or less, including month to month leases, are not recorded on the balance sheet. Lease expense for short-term leases is recognized on a straight line basis over the lease term. For lease agreements we have entered into or reassessed, we combine lease and nonlease components. While we also own mineral leases for mining operations, those leases are outside the scope of Accounting Standards Update No. 2016-2, Leases (Topic 842). Assets acquired under finance leases are included in property, plant and equipment. Many of our leases include options to purchase the leased equipment. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of

ACQUISITIONS, DISPOSTIONS, GO_2

ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES - (Tables)	6 Months Ended
	Jul. 01, 2023
Business Acquisition [Line Items]
Schedule Of Acquisitions By Region	The following table summarizes the Company’s acquisitions by region and period: Six months ended Year ended July 1, 2023 December 31, 2022 West 3 — East 1 2
Schedule of Assets Acquired and Liabilities Assumed	The following table summarizes aggregated information regarding the fair values of the assets acquired and liabilities assumed as of the respective acquisition dates: Six months ended Year ended July 1, 2023 December 31, 2022 Financial assets $ 13,104 $ 297 Inventories 6,521 161 Property, plant and equipment 137,394 30,041 Other assets 458 1,116 Financial liabilities (11,925) (1,120) Other long-term liabilities (768) (1,589) Net assets acquired 144,784 28,906 Goodwill 94,564 — Purchase price 239,348 28,906 Acquisition-related liabilities — (6,176) Other (1,682) — Net cash paid for acquisitions $ 237,666 $ 22,730
Schedule of Goodwill by Reportable Segment and in Total	Changes in the carrying amount of goodwill, by reportable segment, from December 31, 2022 to July 1, 2023 are summarized as follows: West East Cement Total Balance—December 31, 2022 $ 566,389 $ 361,501 $ 204,656 $ 1,132,546 Acquisitions (1) 94,564 — — 94,564 Foreign currency translation adjustments 1,358 — — 1,358 Balance—July 1, 2023 $ 662,311 $ 361,501 $ 204,656 $ 1,228,468 _______________________________________________________________________ (1) Reflects goodwill from 2023 acquisitions.
Schedule of Intangible Assets by Type and in Total	The following table shows intangible assets by type and in total: July 1, 2023 December 31, 2022 Gross Accumulated Net Gross Accumulated Net Operating permits $ 38,677 $ (4,926) $ 33,751 $ 38,677 $ (4,109) $ 34,568 Mineral leases 17,778 (7,228) 10,550 18,091 (7,056) 11,035 Reserve rights 25,586 (4,608) 20,978 25,242 (3,872) 21,370 Other 4,994 (559) 4,435 4,877 (466) 4,411 Total intangible assets $ 87,035 $ (17,321) $ 69,714 $ 86,887 $ (15,503) $ 71,384
Schedule of Estimated Amortization Expense for Intangible Assets	The estimated amortization expense for the intangible assets for each of the five years subsequent to July 1, 2023 is as follows: 2023 (six months) $ 1,999 2024 4,006 2025 3,965 2026 3,916 2027 3,904 2028 3,906 Thereafter 48,018 Total $ 69,714
Summit Materials, LLC
Business Acquisition [Line Items]
Schedule Of Acquisitions By Region	The following table summarizes the Company’s acquisitions by region and period: Six months ended Year ended July 1, 2023 December 31, 2022 West 3 — East 1 2
Schedule of Assets Acquired and Liabilities Assumed	The following table summarizes aggregated information regarding the fair values of the assets acquired and liabilities assumed as of the respective acquisition dates: Six months ended Year ended July 1, 2023 December 31, 2022 Financial assets $ 13,104 $ 297 Inventories 6,521 161 Property, plant and equipment 137,394 30,041 Other assets 458 1,116 Financial liabilities (11,925) (1,120) Other long-term liabilities (768) (1,589) Net assets acquired 144,784 28,906 Goodwill 94,564 — Purchase price 239,348 28,906 Acquisition-related liabilities — (6,176) Other (1,682) — Net cash paid for acquisitions $ 237,666 $ 22,730
Schedule of Goodwill by Reportable Segment and in Total	Changes in the carrying amount of goodwill, by reportable segment, from December 31, 2022 to July 1, 2023 are summarized as follows: West East Cement Total Balance—December 31, 2022 $ 567,389 $ 361,501 $ 204,656 $ 1,133,546 Acquisitions (1) 94,564 — — 94,564 Foreign currency translation adjustments 1,358 — — 1,358 Balance—July 1, 2023 $ 663,311 $ 361,501 $ 204,656 $ 1,229,468 _______________________________________________________________________ (1) Reflects goodwill from 2023 acquisitions.
Schedule of Intangible Assets by Type and in Total	The following table shows intangible assets by type and in total: July 1, 2023 December 31, 2022 Gross Accumulated Net Gross Accumulated Net Operating permits $ 38,677 $ (4,926) $ 33,751 $ 38,677 $ (4,109) $ 34,568 Mineral leases 17,778 (7,228) 10,550 18,091 (7,056) 11,035 Reserve rights 25,586 (4,608) 20,978 25,242 (3,872) 21,370 Other 4,994 (559) 4,435 4,877 (466) 4,411 Total intangible assets $ 87,035 $ (17,321) $ 69,714 $ 86,887 $ (15,503) $ 71,384
Schedule of Estimated Amortization Expense for Intangible Assets	The estimated amortization expense for the intangible assets for each of the five years subsequent to July 1, 2023 is as follows: 2023 (six months) $ 1,999 2024 4,006 2025 3,965 2026 3,916 2027 3,904 2028 3,906 Thereafter 48,018 Total $ 69,714

REVENUE RECOGNITION - (Tables)

REVENUE RECOGNITION - (Tables)	6 Months Ended
	Jul. 01, 2023
Revenue from External Customer [Line Items]
Schedule of Revenue by Product	Revenue by product for the three and six months ended July 1, 2023 and July 2, 2022 is as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Revenue by product*: Aggregates $ 182,512 $ 161,480 $ 326,165 $ 284,873 Cement 103,607 86,815 152,620 129,369 Ready-mix concrete 199,570 183,357 338,348 340,920 Asphalt 91,809 94,141 118,444 111,279 Paving and related services 89,374 98,610 116,558 129,220 Other 62,278 62,151 112,403 111,840 Total revenue $ 729,150 $ 686,554 $ 1,164,538 $ 1,107,501 *Revenue from liquid asphalt terminals is included in asphalt revenue.
Schedule of Accounts Receivable, Net	Accounts receivable, net consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Trade accounts receivable $ 314,590 $ 215,766 Construction contract receivables 52,932 37,067 Retention receivables 10,461 11,048 Accounts receivable 377,983 263,881 Less: Allowance for doubtful accounts (7,479) (7,212) Accounts receivable, net $ 370,504 $ 256,669
Summit Materials, LLC
Revenue from External Customer [Line Items]
Schedule of Revenue by Product	Revenue by product for the three and six months ended July 1, 2023 and July 2, 2022 is as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Revenue by product*: Aggregates $ 182,512 $ 161,480 $ 326,165 $ 284,873 Cement 103,607 86,815 152,620 129,369 Ready-mix concrete 199,570 183,357 338,348 340,920 Asphalt 91,809 94,141 118,444 111,279 Paving and related services 89,374 98,610 116,558 129,220 Other 62,278 62,151 112,403 111,840 Total revenue $ 729,150 $ 686,554 $ 1,164,538 $ 1,107,501 *Revenue from liquid asphalt terminals is included in asphalt revenue.
Schedule of Accounts Receivable, Net	Accounts receivable, net consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Trade accounts receivable $ 314,590 $ 215,766 Construction contract receivables 52,932 37,067 Retention receivables 10,461 11,048 Accounts receivable 377,983 263,881 Less: Allowance for doubtful accounts (7,479) (7,212) Accounts receivable, net $ 370,504 $ 256,669

INVENTORIES - (Tables)

INVENTORIES - (Tables)	6 Months Ended
	Jul. 01, 2023
Inventory [Line Items]
Schedule of Components of Inventories	Inventories consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Aggregate stockpiles $ 157,272 $ 148,347 Finished goods 55,877 33,622 Work in process 9,806 8,191 Raw materials 23,320 22,331 Total $ 246,275 $ 212,491
Summit Materials, LLC
Inventory [Line Items]
Schedule of Components of Inventories	Inventories consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Aggregate stockpiles $ 157,272 $ 148,347 Finished goods 55,877 33,622 Work in process 9,806 8,191 Raw materials 23,320 22,331 Total $ 246,275 $ 212,491

ACCRUED EXPENSES - (Tables)

ACCRUED EXPENSES - (Tables)	6 Months Ended
	Jul. 01, 2023
Schedule Of Accrued Expenses [Line Items]
Schedule of Components of Accrued Expenses	Accrued expenses consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Interest $ 36,037 $ 24,625 Payroll and benefits 40,602 34,485 Finance lease obligations 3,499 6,959 Insurance 21,314 18,127 Current portion of TRA liability and non-income taxes 13,976 4,360 Deferred asset purchase payments 5,824 5,131 Professional fees 1,755 924 Other (1) 25,653 25,356 Total $ 148,660 $ 119,967 (1) Consists primarily of current portion of asset retirement obligations and miscellaneous accruals.
Summit Materials, LLC
Schedule Of Accrued Expenses [Line Items]
Schedule of Components of Accrued Expenses	Accrued expenses consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Interest $ 36,037 $ 24,625 Payroll and benefits 40,602 34,485 Finance lease obligations 3,499 6,959 Insurance 21,314 18,127 Non-income taxes 10,061 5,101 Deferred asset purchase payments 5,824 5,131 Professional fees 1,755 924 Other (1) 25,653 25,356 Total $ 144,745 $ 120,708 _______________________________________________________________________ (1) Consists primarily of current portion of asset retirement obligations and miscellaneous accruals.

DEBT - (Tables)

DEBT - (Tables)	6 Months Ended
	Jul. 01, 2023
Debt Instrument [Line Items]
Schedule of Debt	Debt consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Term Loan, due 2027: $507.0 million and $509.6 million, net of $4.5 million and $5.0 million discount at July 1, 2023 and December 31, 2022, respectively $ 502,511 $ 504,549 6 1 ⁄ 2 % Senior Notes, due 2027 300,000 300,000 5 1 ⁄ 4 % Senior Notes, due 2029 700,000 700,000 Total 1,502,511 1,504,549 Current portion of long-term debt 5,096 5,096 Long-term debt $ 1,497,415 $ 1,499,453
Schedule of Contractual Payments of Long-Term Debt	The contractual payments of long-term debt, including current maturities, for the five years subsequent to July 1, 2023, are as follows: 2023 (six months) $ 2,548 2024 3,822 2025 6,369 2026 5,096 2027 789,177 2028 — Thereafter 700,000 Total 1,507,012 Less: Original issue net discount (4,501) Less: Capitalized loan costs (10,126) Total debt $ 1,492,385
Shedule of Activity for Deferred Financing Fees	The following table presents the activity for the deferred financing fees for the six months ended July 1, 2023 and July 2, 2022: Deferred financing fees Balance—December 31, 2022 $ 11,489 Loan origination fees 1,566 Amortization (1,227) Write off of deferred financing fees (160) Balance—July 1, 2023 $ 11,668 Balance—January 1, 2022 $ 13,049 Amortization (1,384) Balance—July 2, 2022 $ 11,665
Summit Materials, LLC
Debt Instrument [Line Items]
Schedule of Debt	Debt consisted of the following as of July 1, 2023 and December 31, 2022: July 1, 2023 December 31, 2022 Term Loan, due 2027: $507.0 million and $509.6 million, net of $4.5 million and $5.0 million discount at July 1, 2023 and December 31, 2022, respectively $ 502,511 $ 504,549 6 1/2 % Senior Notes, due 2027 300,000 300,000 5 1/4 % Senior Notes, due 2029 700,000 700,000 Total 1,502,511 1,504,549 Current portion of long-term debt 5,096 5,096 Long-term debt $ 1,497,415 $ 1,499,453
Schedule of Contractual Payments of Long-Term Debt	The contractual payments of long-term debt, including current maturities, for the five years subsequent to July 1, 2023, are as follows: 2023 (six months) $ 2,548 2024 3,822 2025 6,369 2026 5,096 2027 789,177 2028 — Thereafter 700,000 Total 1,507,012 Less: Original issue net discount (4,501) Less: Capitalized loan costs (10,126) Total debt $ 1,492,385
Shedule of Activity for Deferred Financing Fees	The following table presents the activity for the deferred financing fees for the six months ended July 1, 2023 and July 2, 2022: Deferred financing fees Balance—December 31, 2022 $ 11,489 Loan origination fees 1,566 Amortization (1,227) Write off of deferred financing fees (160) Balance—July 1, 2023 $ 11,668 Balance - January 1, 2022 $ 13,049 Amortization (1,384) Balance -July 2, 2022 $ 11,665

EARNINGS PER SHARE - (Tables)

EARNINGS PER SHARE - (Tables)	6 Months Ended
	Jul. 01, 2023
Earnings Per Share [Abstract]
Schedule of Basic Earnings Per Share	The following table shows the calculation of basic and diluted earnings per share: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Net income attributable to Summit Inc. $ 83,637 $ 190,113 $ 52,833 $ 155,821 Weighted average shares of Class A stock outstanding 118,848,214 120,078,273 118,706,385 120,417,414 Add: Nonvested restricted stock awards of retirement eligible shares 83,700 143,821 99,400 151,973 Weighted average shares outstanding 118,931,914 120,222,094 118,805,785 120,569,387 Basic earnings per share $ 0.70 $ 1.58 $ 0.44 $ 1.29 Diluted net income attributable to Summit Inc. $ 83,637 $ 190,113 $ 52,833 $ 155,821 Weighted average shares outstanding 118,931,914 120,222,094 118,805,785 120,569,387 Add: stock options 100,895 76,161 99,102 101,094 Add: warrants 13,194 10,413 12,978 12,844 Add: restricted stock units 193,011 257,454 340,958 533,242 Add: performance stock units 154,695 94,599 172,781 157,601 Weighted average dilutive shares outstanding 119,393,709 120,660,721 119,431,604 121,374,168 Diluted earnings per share $ 0.70 $ 1.58 $ 0.44 $ 1.28
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	Excluded from the above calculations were the shares noted below as they were antidilutive: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Antidilutive shares: LP Units 1,310,004 1,314,006 1,310,630 1,314,006

STOCKHOLDERS' EQUITY_MEMBERS'_2

STOCKHOLDERS' EQUITY/MEMBERS' INTEREST - (Tables)	6 Months Ended
	Jul. 01, 2023
Schedule of Capitalization, Equity [Line Items]
Schedule of Changes in Ownership of Summit Holdings	The following table summarizes the changes in our ownership of Summit Holdings: Summit Inc. LP Units Total Summit Inc. Balance — December 31, 2022 118,408,655 1,312,004 119,720,659 98.9 % Exchanges during period 2,000 (2,000) — Stock option exercises 4,240 — 4,240 Other equity transactions 471,379 — 471,379 Balance — July 1, 2023 118,886,274 1,310,004 120,196,278 98.9 % Balance — January 1, 2022 120,684,322 1,314,006 121,998,328 98.9 % Stock option exercises 6,518 — 6,518 Repurchases of common stock (1,506,878) — (1,506,878) Other equity transactions 909,864 — 909,864 Balance — July 2, 2022 120,093,826 1,314,006 121,407,832 98.9 %
Schedule of Changes in Each Component of Accumulated Other Comprehensive Income (Loss)	The changes in each component of accumulated other comprehensive income (loss) consisted of the following: Change in Foreign currency Accumulated Balance — December 31, 2022 $ 6,356 $ (3,272) $ 3,084 Foreign currency translation adjustment, net of tax — 3,242 3,242 Balance — July 1, 2023 $ 6,356 $ (30) $ 6,326 Balance — January 1, 2022 $ 1,508 $ 5,575 $ 7,083 Foreign currency translation adjustment, net of tax — (2,890) (2,890) Balance — July 2, 2022 $ 1,508 $ 2,685 $ 4,193
Summit Materials, LLC
Schedule of Capitalization, Equity [Line Items]
Schedule of Changes in Each Component of Accumulated Other Comprehensive Income (Loss)	The changes in each component of accumulated other comprehensive income (loss) consisted of the following: Accumulated Foreign currency other Change in translation comprehensive retirement plans adjustments (loss) income Balance — December 31, 2022 $ (762) $ (20,614) $ (21,376) Foreign currency translation adjustment — 4,105 4,105 Balance — July 1, 2023 $ (762) $ (16,509) $ (17,271) Balance — January 1, 2022 $ (7,243) $ (8,783) $ (16,026) Foreign currency translation adjustment — (3,866) (3,866) Balance — July 2, 2022 $ (7,243) $ (12,649) $ (19,892)

SUPPLEMENTAL CASH FLOW INFORM_2

SUPPLEMENTAL CASH FLOW INFORMATION - (Tables)	6 Months Ended
	Jul. 01, 2023
Schedule Of Cash Flow Supplemental [Line Items]
Schedule of Supplemental Cash Flow Information	Supplemental cash flow information is as follows: Six months ended July 1, 2023 July 2, 2022 Cash payments: Interest $ 38,107 $ 36,115 Payments for income taxes, net 6,941 8,503 Operating cash payments on operating leases 4,801 4,652 Operating cash payments on finance leases 282 646 Finance cash payments on finance leases 5,223 11,297 Non cash investing and financing activities: Accrued liabilities for purchases of property, plant and equipment $ 14,994 $ 20,225 Right of use assets obtained in exchange for operating lease obligations 2,050 9,312 Right of use assets obtained in exchange for finance leases obligations 413 258 Exchange of LP Units to shares of Class A common stock 60 —
Summit Materials, LLC
Schedule Of Cash Flow Supplemental [Line Items]
Schedule of Supplemental Cash Flow Information	Supplemental cash flow information is as follows: Six months ended July 1, 2023 July 2, 2022 Cash payments: Interest $ 38,107 $ 36,115 Payments for income taxes, net 6,941 8,503 Operating cash payments on operating leases 4,801 4,652 Operating cash payments on finance leases 282 646 Finance cash payments on finance leases 5,223 11,297 Non cash investing and financing activities: Accrued liabilities for purchases of property, plant and equipment $ 14,994 $ 20,225 Right of use assets obtained in exchange for operating lease obligations 2,050 9,312 Right of use assets obtained in exchange for finance leases obligations 413 258

LEASES - (Tables)

LEASES - (Tables)	6 Months Ended
	Jul. 01, 2023
Lessee, Lease, Description [Line Items]
Schedule of Lease Cost	The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
Schedule of Lease Assets and Liabilities	The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
Schedule of Finance Lease Liability Maturities	The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
Schedule of Operating Lease Liability Maturities	The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
Summit Materials, LLC
Lessee, Lease, Description [Line Items]
Schedule of Lease Cost	The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
Schedule of Lease Assets and Liabilities	The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
Schedule of Finance Lease Liability Maturities	The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319
Schedule of Operating Lease Liability Maturities	The components of lease expense were as follows: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Operating lease cost $ 2,697 $ 2,271 $ 5,338 $ 4,783 Variable lease cost 34 42 64 155 Short-term lease cost 10,184 10,933 17,454 19,181 Financing lease cost: Amortization of right-of-use assets 714 1,377 1,532 3,363 Interest on lease liabilities 133 271 281 640 Total lease cost $ 13,762 $ 14,894 $ 24,669 $ 28,122 July 1, 2023 December 31, 2022 Supplemental balance sheet information related to leases: Operating leases: Operating lease right-of-use assets $ 36,013 $ 37,889 Current operating lease liabilities $ 7,707 $ 7,296 Noncurrent operating lease liabilities 33,563 35,737 Total operating lease liabilities $ 41,270 $ 43,033 Finance leases: Property and equipment, gross $ 21,515 $ 32,119 Less accumulated depreciation (10,101) (14,992) Property and equipment, net $ 11,414 $ 17,127 Current finance lease liabilities $ 3,499 $ 6,959 Long-term finance lease liabilities 5,820 7,167 Total finance lease liabilities $ 9,319 $ 14,126 Weighted average remaining lease term (years): Operating leases 8.8 9.1 Finance lease 3.5 2.8 Weighted average discount rate: Operating leases 4.8 % 4.7 % Finance leases 5.7 % 5.3 % Maturities of lease liabilities, as of July 1, 2023, were as follows: Operating Leases Finance Leases 2023 (six months) $ 4,831 $ 2,142 2024 8,762 3,052 2025 6,787 2,435 2026 5,242 990 2027 4,233 760 2028 3,432 513 Thereafter 17,664 570 Total lease payments 50,951 10,462 Less imputed interest (9,681) (1,143) Present value of lease payments $ 41,270 $ 9,319

FAIR VALUE - (Tables)

FAIR VALUE - (Tables)	6 Months Ended
	Jul. 01, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Contingent Consideration and Derivatives Measured at Fair Value	The fair value of contingent consideration as of July 1, 2023 and December 31, 2022 was: July 1, 2023 December 31, 2022 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 336 $ 336 Acquisition-related liabilities and Other noncurrent liabilities: Contingent consideration $ 5,102 $ 4,981
Schedule of Carrying Value and Fair Value of Financial Instruments	The carrying value and fair value of these financial instruments as of July 1, 2023 and December 31, 2022 was: July 1, 2023 December 31, 2022 Fair Value Carrying Value Fair Value Carrying Value Level 1 Long-term debt(1) $ 1,456,913 $ 1,502,511 $ 1,447,673 $ 1,504,549 Level 3 Current portion of deferred consideration and noncompete obligations(2) 6,907 6,907 13,382 13,382 Long term portion of deferred consideration and noncompete obligations(3) 18,401 18,401 24,070 24,070 (1) $5.1 million was included in current portion of debt as of July 1, 2023 and December 31, 2022. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets.
Summit Materials, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Contingent Consideration and Derivatives Measured at Fair Value	The fair value of contingent consideration as of July 1, 2023 and December 31, 2022 was: July 1, 2023 December 31, 2022 Current portion of acquisition-related liabilities and Accrued expenses: Contingent consideration $ 336 $ 336 Acquisition-related liabilities and Other noncurrent liabilities: Contingent consideration $ 5,102 $ 4,981
Schedule of Carrying Value and Fair Value of Financial Instruments	The carrying value and fair value of these financial instruments as of July 1, 2023 and December 31, 2022 was: July 1, 2023 December 31, 2022 Fair Value Carrying Value Fair Value Carrying Value Level 1 Long-term debt(1) $ 1,456,913 $ 1,502,511 $ 1,447,673 $ 1,504,549 Level 3 Current portion of deferred consideration and noncompete obligations(2) 6,907 6,907 13,382 13,382 Long term portion of deferred consideration and noncompete obligations(3) 18,401 18,401 24,070 24,070 (1) $5.1 million was included in current portion of debt as of July 1, 2023 and December 31, 2022. (2) Included in current portion of acquisition-related liabilities on the consolidated balance sheets. (3) Included in acquisition-related liabilities on the consolidated balance sheets.

SEGMENT INFORMATION - (Tables)

SEGMENT INFORMATION - (Tables)	6 Months Ended
	Jul. 01, 2023
Segment Reporting Information [Line Items]
Schedule of Financial Data for Company's Reportable Business Segments	The following tables display selected financial data for the Company’s reportable business segments as of July 1, 2023 and December 31, 2022 and for the three and six months ended July 1, 2023 and July 2, 2022: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Revenue*: West $ 430,738 $ 383,750 $ 681,620 $ 635,982 East 186,537 209,153 316,926 331,643 Cement 111,875 93,651 165,992 139,876 Total revenue $ 729,150 $ 686,554 $ 1,164,538 $ 1,107,501 *Intercompany sales are immaterial and the presentation above only reflects sales to external customers. Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Income from operations before taxes $ 107,209 $ 246,713 $ 69,531 $ 207,170 Interest expense 27,902 20,599 55,322 40,748 Depreciation, depletion and amortization 54,042 46,455 104,230 96,934 Accretion 745 702 1,451 1,416 Loss on debt financings — — 493 — Tax receivable agreement expense — 954 — 954 Gain on sale of businesses — (156,053) — (170,258) Non-cash compensation 5,216 4,734 9,924 10,156 Other (3,369) (70) (8,005) 177 Total Adjusted EBITDA $ 191,745 $ 164,034 $ 232,946 $ 187,297 Total Adjusted EBITDA by Segment: West $ 104,517 $ 84,644 $ 137,195 $ 117,336 East 47,617 46,694 66,469 54,830 Cement 52,872 43,241 52,882 37,422 Corporate and other (13,261) (10,545) (23,600) (22,291) Total Adjusted EBITDA $ 191,745 $ 164,034 $ 232,946 $ 187,297 Six months ended July 1, 2023 July 2, 2022 Purchases of property, plant and equipment West $ 70,687 $ 58,137 East 30,378 45,910 Cement 19,477 19,875 Total reportable segments 120,542 123,922 Corporate and other 6,351 5,658 Total purchases of property, plant and equipment $ 126,893 $ 129,580 Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Depreciation, depletion, amortization and accretion: West $ 28,144 $ 22,012 $ 54,517 $ 46,587 East 15,718 14,915 31,253 33,210 Cement 9,891 9,460 17,889 17,034 Total reportable segments 53,753 46,387 103,659 96,831 Corporate and other 1,034 770 2,022 1,519 Total depreciation, depletion, amortization and accretion $ 54,787 $ 47,157 $ 105,681 $ 98,350 July 1, 2023 December 31, 2022 Total assets: West $ 1,919,824 $ 1,565,776 East 1,181,536 1,151,223 Cement 924,766 873,604 Total reportable segments 4,026,126 3,590,603 Corporate and other 369,361 665,089 Total $ 4,395,487 $ 4,255,692
Summit Materials, LLC
Segment Reporting Information [Line Items]
Schedule of Financial Data for Company's Reportable Business Segments	The following tables display selected financial data for the Company’s reportable business segments as of July 1, 2023 and December 31, 2022 and for the three and six months ended July 1, 2023 and July 2, 2022: Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Revenue*: West $ 430,738 $ 383,750 $ 681,620 $ 635,982 East 186,537 209,153 316,926 331,643 Cement 111,875 93,651 165,992 139,876 Total revenue $ 729,150 $ 686,554 $ 1,164,538 $ 1,107,501 *Intercompany sales are immaterial and the presentation above only reflects sales to external customers. Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Income from operations before taxes $ 107,209 $ 247,667 $ 69,531 $ 208,124 Interest expense 27,902 20,599 55,322 40,748 Depreciation, depletion and amortization 54,042 46,455 104,230 96,934 Accretion 745 702 1,451 1,416 Loss on debt financings — — 493 — Gain on sale of businesses — (156,053) — (170,258) Non-cash compensation 5,216 4,734 9,924 10,156 Other (3,369) (70) (8,005) 177 Total Adjusted EBITDA $ 191,745 $ 164,034 $ 232,946 $ 187,297 Total Adjusted EBITDA by Segment: West $ 104,517 $ 84,644 $ 137,195 $ 117,336 East 47,617 46,694 66,469 54,830 Cement 52,872 43,241 52,882 37,422 Corporate and other (13,261) (10,545) (23,600) (22,291) Total Adjusted EBITDA $ 191,745 $ 164,034 $ 232,946 $ 187,297 Six months ended July 1, 2023 July 2, 2022 Purchases of property, plant and equipment West $ 70,687 $ 58,137 East 30,378 45,910 Cement 19,477 19,875 Total reportable segments 120,542 123,922 Corporate and other 6,351 5,658 Total purchases of property, plant and equipment $ 126,893 $ 129,580 Three months ended Six months ended July 1, 2023 July 2, 2022 July 1, 2023 July 2, 2022 Depreciation, depletion, amortization and accretion: West $ 28,144 $ 22,012 $ 54,517 $ 46,587 East 15,718 14,915 31,253 33,210 Cement 9,891 9,460 17,889 17,034 Total reportable segments 53,753 46,387 103,659 96,831 Corporate and other 1,034 770 2,022 1,519 Total depreciation, depletion, amortization and accretion $ 54,787 $ 47,157 $ 105,681 $ 98,350 July 1, 2023 December 31, 2022 Total assets: West $ 1,919,824 $ 1,565,776 East 1,181,536 1,151,223 Cement 924,766 873,604 Total reportable segments 4,026,126 3,590,603 Corporate and other 243,544 529,103 Total $ 4,269,670 $ 4,119,706

GUARANTOR AND NON-GUARANTOR F_2

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - (Tables) - Summit Materials, LLC	6 Months Ended
	Jul. 01, 2023
Schedule of Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheets July 1, 2023 Non- Issuers Guarantors Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 197,481 $ 5,698 $ 32,206 $ (5,375) $ 230,010 Accounts receivable, net 603 341,501 28,491 (91) 370,504 Intercompany receivables 311,267 1,985,385 — (2,296,652) — Cost and estimated earnings in excess of billings — 33,533 1,782 — 35,315 Inventories — 239,848 6,427 — 246,275 Other current assets 11,596 11,143 1,459 — 24,198 Total current assets 520,947 2,617,108 70,365 (2,302,118) 906,302 Property, plant and equipment, net 27,660 1,871,238 81,088 — 1,979,986 Goodwill — 1,171,500 57,968 — 1,229,468 Intangible assets, net — 65,279 4,435 — 69,714 Operating lease right-of-use assets 4,225 27,149 4,639 — 36,013 Other assets 5,016,546 216,720 810 (5,185,889) 48,187 Total assets $ 5,569,378 $ 5,968,994 $ 219,305 $ (7,488,007) $ 4,269,670 Liabilities and Members' Interest Current liabilities: Current portion of debt $ 5,096 $ — $ — $ — $ 5,096 Current portion of acquisition-related liabilities — 7,243 — — 7,243 Accounts payable 5,622 153,815 11,730 (91) 171,076 Accrued expenses 64,653 82,359 3,108 (5,375) 144,745 Current operating lease liabilities 946 6,099 662 — 7,707 Intercompany payables 1,776,656 516,160 3,836 (2,296,652) — Billings in excess of costs and estimated earnings — 6,313 741 — 7,054 Total current liabilities 1,852,973 771,989 20,077 (2,302,118) 342,921 Long-term debt 1,487,289 — — — 1,487,289 Acquisition-related liabilities — 23,503 — — 23,503 Noncurrent operating lease liabilities 8,315 21,355 3,893 — 33,563 Other noncurrent liabilities 5,497 208,578 117,436 (164,421) 167,090 Total liabilities 3,354,074 1,025,425 141,406 (2,466,539) 2,054,366 Total members' interest 2,215,304 4,943,569 77,899 (5,021,468) 2,215,304 Total liabilities and members' interest $ 5,569,378 $ 5,968,994 $ 219,305 $ (7,488,007) $ 4,269,670 Condensed Consolidating Balance Sheets December 31, 2022 Non- Issuers Guarantors Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 498,307 $ 2,864 $ 26,298 $ (7,018) $ 520,451 Accounts receivable, net 1,528 233,039 22,127 (25) 256,669 Intercompany receivables 329,744 1,937,390 — (2,267,134) — Cost and estimated earnings in excess of billings — 5,861 649 — 6,510 Inventories — 206,418 6,073 — 212,491 Other current assets 4,755 16,341 1,159 — 22,255 Total current assets 834,334 2,401,913 56,306 (2,274,177) 1,018,376 Property, plant and equipment, net 21,306 1,710,972 81,424 — 1,813,702 Goodwill — 1,076,935 56,611 — 1,133,546 Intangible assets, net — 66,972 4,412 — 71,384 Operating lease right-of-use assets 4,665 28,310 4,914 — 37,889 Other assets 4,599,488 204,644 1,220 (4,760,543) 44,809 Total assets $ 5,459,793 $ 5,489,746 $ 204,887 $ (7,034,720) $ 4,119,706 Liabilities and Members' Interest Current liabilities: Current portion of debt $ 5,096 $ — $ — $ — $ 5,096 Current portion of acquisition-related liabilities — 13,718 — — 13,718 Accounts payable 3,553 93,096 7,806 (25) 104,430 Accrued expenses 54,417 70,433 2,876 (7,018) 120,708 Current operating lease liabilities 921 5,637 738 — 7,296 Intercompany payables 1,750,352 513,494 3,288 (2,267,134) — Billings in excess of costs and estimated earnings — 4,956 783 — 5,739 Total current liabilities 1,814,339 701,334 15,491 (2,274,177) 256,987 Long-term debt 1,488,569 — — — 1,488,569 Acquisition-related liabilities — 29,051 — — 29,051 Noncurrent operating lease liabilities 8,726 22,871 4,140 — 35,737 Other noncurrent liabilities 5,009 208,185 117,439 (164,421) 166,212 Total liabilities 3,316,643 961,441 137,070 (2,438,598) 1,976,556 Total members' interest 2,143,150 4,528,305 67,817 (4,596,122) 2,143,150 Total liabilities and members' interest $ 5,459,793 $ 5,489,746 $ 204,887 $ (7,034,720) $ 4,119,706
Schedule of Condensed Consolidating Statements of Operations	Condensed Consolidating Statements of Operations For the six months ended July 1, 2023 Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 1,104,334 $ 62,562 $ (2,358) $ 1,164,538 Cost of revenue (excluding items shown separately below) — 805,079 43,719 (2,358) 846,440 General and administrative expenses 33,873 60,955 3,431 — 98,259 Depreciation, depletion, amortization and accretion 2,022 98,071 5,588 — 105,681 Operating (loss) income (35,895) 140,229 9,824 — 114,158 Other income, net (179,850) (1,547) (1,109) 171,811 (10,695) Interest expense (income) 80,276 (27,694) 2,740 — 55,322 Income from operation before taxes 63,679 169,470 8,193 (171,811) 69,531 Income tax expense 800 3,635 2,217 — 6,652 Net income attributable to Summit LLC $ 62,879 $ 165,835 $ 5,976 $ (171,811) $ 62,879 Comprehensive income attributable to member of Summit Materials, LLC $ 66,984 $ 165,835 $ 1,871 $ (167,706) $ 66,984 Condensed Consolidating Statements of Operations For the three months ended July 2, 2022 Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 656,952 $ 33,762 $ (4,160) $ 686,554 Cost of revenue (excluding items shown separately below) — 464,383 23,982 (4,160) 484,205 General and administrative expenses 15,919 26,426 1,611 — 43,956 Depreciation, depletion, amortization and accretion 769 43,342 3,046 — 47,157 Operating (loss) income (16,688) 122,801 5,123 — 111,236 Other (income) loss, net (166,798) (433) 96 166,158 (977) Interest expense (income) 33,579 (14,350) 1,370 — 20,599 Gain on sale of business (126,601) (29,452) — — (156,053) Income from operation before taxes 243,132 167,036 3,657 (166,158) 247,667 Income tax expense 1,031 3,548 987 — 5,566 Net income attributable to Summit LLC $ 242,101 $ 163,488 $ 2,670 $ (166,158) $ 242,101 Comprehensive income attributable to member of Summit Materials, LLC $ 236,491 $ 163,488 $ 8,280 $ (171,768) $ 236,491 Condensed Consolidating Statements of Operations For the six months ended July 2, 2022 Non- Issuers Guarantors Guarantors Eliminations Consolidated Revenue $ — $ 1,052,132 $ 60,859 $ (5,490) $ 1,107,501 Cost of revenue (excluding items shown separately below) — 798,647 44,428 (5,490) 837,585 General and administrative expenses 33,223 58,099 3,303 — 94,625 Depreciation, depletion, amortization and accretion 1,518 90,839 5,993 — 98,350 Operating (loss) income (34,741) 104,547 7,135 — 76,941 Other (income) loss, net (172,716) (986) 89 171,940 (1,673) Interest expense (income) 67,481 (29,473) 2,740 — 40,748 Gain on sale of business (126,601) (43,657) — — (170,258) Income from operation before taxes 197,095 178,663 4,306 (171,940) 208,124 Income tax expense 1,381 9,866 1,163 — 12,410 Net income attributable to Summit LLC $ 195,714 $ 168,797 $ 3,143 $ (171,940) $ 195,714 Comprehensive income attributable to member of Summit Materials, LLC $ 191,848 $ 168,797 $ 7,009 $ (175,806) $ 191,848
Schedule of Condensed Consolidating Statements of Cash Flows	Condensed Consolidating Statements of Cash Flows For the six months ended July 1, 2023 Non- Issuers Guarantors Guarantors Eliminations Consolidated Net cash (used in) provided by operating activities $ (62,840) $ 146,620 $ 10,262 $ — $ 94,042 Cash flow from investing activities: Acquisitions, net of cash acquired — (237,666) — — (237,666) Purchase of property, plant and equipment (6,350) (117,310) (3,233) — (126,893) Proceeds from the sale of property, plant, and equipment — 5,435 325 — 5,760 Other — (1,852) — — (1,852) Net cash used in investing activities (6,350) (351,393) (2,908) — (360,651) Cash flow from financing activities: Capital distributions to member (239,264) 239,348 — — 84 Loans received from and payments made on loans from other Summit Companies 13,332 (12,997) (1,978) 1,643 — Payments on long-term debt (2,548) (4,172) — — (6,720) Payments on acquisition-related liabilities — (11,539) — — (11,539) Debt issuance costs (1,566) — — — (1,566) Other (1,590) (3,033) (215) — (4,838) Net cash (used in) provided by financing activities (231,636) 207,607 (2,193) 1,643 (24,579) Impact of cash on foreign currency — — 747 — 747 Net (decrease) increase in cash (300,826) 2,834 5,908 1,643 (290,441) Cash — Beginning of period 498,307 2,864 26,298 (7,018) 520,451 Cash — End of period $ 197,481 $ 5,698 $ 32,206 $ (5,375) $ 230,010 Condensed Consolidating Statements of Cash Flows For the six months ended July 2, 2022 Non- Issuers Guarantors Guarantors Eliminations Consolidated Net cash (used in) provided by operating activities $ (63,758) $ 73,145 $ 6,867 $ — $ 16,254 Cash flow from investing activities: Acquisitions, net of cash acquired — (1,933) — — (1,933) Purchase of property, plant and equipment (5,657) (121,589) (2,334) — (129,580) Proceeds from the sale of property, plant, and equipment — 5,182 245 — 5,427 Proceeds from the sale of a business — 341,741 — — 341,741 Other — (1,098) — — (1,098) Net cash (used in) provided by investing activities (5,657) 222,303 (2,089) — 214,557 Cash flow from financing activities: Capital distributions to member (49,319) 1,933 — — (47,386) Loans received from and payments made on loans from other Summit Companies 275,632 (273,262) (2,991) 621 — Payments on long-term debt (75,553) (11,268) — — (86,821) Payments on acquisition-related liabilities — (11,577) — — (11,577) Distributions from partnership (25) — — — (25) Other (187) — — — (187) Net cash provided by (used in) financing activities 150,548 (294,174) (2,991) 621 (145,996) Impact of cash on foreign currency — — (461) — (461) Net increase in cash 81,133 1,274 1,326 621 84,354 Cash — Beginning of period 365,044 2,264 18,337 (4,684) 380,961 Cash — End of period $ 446,177 $ 3,538 $ 19,663 $ (4,063) $ 465,315

SUMMARY OF ORGANIZATION AND S_3

SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES - General Information (Details)	6 Months Ended
	Jul. 01, 2023 segment cementPlant
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Number of operating segments	3
Number of reportable segments	3
Cement plant
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Number of plants | cementPlant	2
Summit Materials, LLC
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Number of operating segments	3
Number of reportable segments	3
Summit Materials, LLC | Cement plant
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Number of plants | cementPlant	2

SUMMARY OF ORGANIZATION AND S_4

SUMMARY OF ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES - Business and Credit Concentration, Tax Receivable Agreement (Details)	Jul. 01, 2023 state
Business and Credit Concentrations
Number of states in which the entity operates	21

ACQUISITIONS, DISPOSTIONS, GO_3

ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES - Acquisitions by Region (Details) - acquisition	6 Months Ended	12 Months Ended
	Jul. 01, 2023	Dec. 31, 2022
West
Business Acquisition [Line Items]
Number of businesses acquired	3	0
West | Summit Materials, LLC
Business Acquisition [Line Items]
Number of businesses acquired	3	0
East
Business Acquisition [Line Items]
Number of businesses acquired	1	2
East | Summit Materials, LLC
Business Acquisition [Line Items]
Number of businesses acquired	1	2

ACQUISITIONS, DISPOSTIONS, GO_4

ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES - Summary of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 01, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Goodwill	$ 1,228,468	$ 1,132,546
Summit Materials, LLC
Business Acquisition [Line Items]
Goodwill	1,229,468	1,133,546
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Financial assets	13,104	297
Inventories	6,521	161
Property, plant and equipment	137,394	30,041
Other assets	458	1,116
Financial liabilities	(11,925)	(1,120)
Other long-term liabilities	(768)	(1,589)
Net assets acquired	144,784	28,906
Goodwill	94,564	0
Purchase price	239,348	28,906
Acquisition-related liabilities	0	(6,176)
Other	(1,682)	0
Net cash paid for acquisitions	237,666	22,730
Series of Individually Immaterial Business Acquisitions | Summit Materials, LLC
Business Acquisition [Line Items]
Financial assets	13,104	297
Inventories	6,521	161
Property, plant and equipment	137,394	30,041
Other assets	458	1,116
Financial liabilities	(11,925)	(1,120)
Other long-term liabilities	(768)	(1,589)
Net assets acquired	144,784	28,906
Goodwill	94,564	0
Purchase price	239,348	28,906
Acquisition-related liabilities	0	(6,176)
Other	(1,682)	0
Net cash paid for acquisitions	$ 237,666	$ 22,730

ACQUISITIONS, DISPOSTIONS, GO_5

ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES - Summary of Goodwill by Reportable Segments (Details) $ in Thousands	6 Months Ended
	Jul. 01, 2023 USD ($)
Goodwill [Roll Forward]
Balance—December 31, 2022	$ 1,132,546
Acquisitions	94,564
Foreign currency translation adjustments	1,358
Balance—July 1, 2023	1,228,468
West
Goodwill [Roll Forward]
Balance—December 31, 2022	566,389
Acquisitions	94,564
Foreign currency translation adjustments	1,358
Balance—July 1, 2023	662,311
East
Goodwill [Roll Forward]
Balance—December 31, 2022	361,501
Acquisitions	0
Foreign currency translation adjustments	0
Balance—July 1, 2023	361,501
Cement
Goodwill [Roll Forward]
Balance—December 31, 2022	204,656
Acquisitions	0
Foreign currency translation adjustments	0
Balance—July 1, 2023	204,656
Summit Materials, LLC
Goodwill [Roll Forward]
Balance—December 31, 2022	1,133,546
Acquisitions	94,564
Foreign currency translation adjustments	1,358
Balance—July 1, 2023	1,229,468
Summit Materials, LLC | West
Goodwill [Roll Forward]
Balance—December 31, 2022	567,389
Acquisitions	94,564
Foreign currency translation adjustments	1,358
Balance—July 1, 2023	663,311
Summit Materials, LLC | East
Goodwill [Roll Forward]
Balance—December 31, 2022	361,501
Acquisitions	0
Foreign currency translation adjustments	0
Balance—July 1, 2023	361,501
Summit Materials, LLC | Cement
Goodwill [Roll Forward]
Balance—December 31, 2022	204,656
Acquisitions	0
Foreign currency translation adjustments	0
Balance—July 1, 2023	$ 204,656

ACQUISITIONS, DISPOSTIONS, GO_6

ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES - Intangible Assets By Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (17,321)		$ (17,321)		$ (15,503)
Amortization expense	900	$ 800	1,800	$ 1,800
Intangible Assets Excluding Intangible Assets Held for Sale
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	87,035		87,035		86,887
Accumulated Amortization	(17,321)		(17,321)		(15,503)
Net Carrying Amount	69,714		69,714		71,384
Operating permits
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	38,677		38,677		38,677
Accumulated Amortization	(4,926)		(4,926)		(4,109)
Net Carrying Amount	33,751		33,751		34,568
Mineral leases
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,778		17,778		18,091
Accumulated Amortization	(7,228)		(7,228)		(7,056)
Net Carrying Amount	10,550		10,550		11,035
Reserve rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,586		25,586		25,242
Accumulated Amortization	(4,608)		(4,608)		(3,872)
Net Carrying Amount	20,978		20,978		21,370
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,994		4,994		4,877
Accumulated Amortization	(559)		(559)		(466)
Net Carrying Amount	4,435		4,435		4,411
Summit Materials, LLC
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	(17,321)		(17,321)		(15,503)
Amortization expense	900	$ 800	1,800	$ 1,800
Summit Materials, LLC | Intangible Assets Excluding Intangible Assets Held for Sale
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	87,035		87,035		86,887
Accumulated Amortization	(17,321)		(17,321)		(15,503)
Net Carrying Amount	69,714		69,714		71,384
Summit Materials, LLC | Operating permits
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	38,677		38,677		38,677
Accumulated Amortization	(4,926)		(4,926)		(4,109)
Net Carrying Amount	33,751		33,751		34,568
Summit Materials, LLC | Mineral leases
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,778		17,778		18,091
Accumulated Amortization	(7,228)		(7,228)		(7,056)
Net Carrying Amount	10,550		10,550		11,035
Summit Materials, LLC | Reserve rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,586		25,586		25,242
Accumulated Amortization	(4,608)		(4,608)		(3,872)
Net Carrying Amount	20,978		20,978		21,370
Summit Materials, LLC | Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,994		4,994		4,877
Accumulated Amortization	(559)		(559)		(466)
Net Carrying Amount	$ 4,435		$ 4,435		$ 4,411

ACQUISITIONS, DISPOSTIONS, GO_7

ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES - Amortization Expense (Details) - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Estimated amortization expense
2023 (six months)	$ 1,999
2024	4,006
2025	3,965
2026	3,916
2027	3,904
2028	3,906
Thereafter	48,018
Total	69,714	$ 71,384
Summit Materials, LLC
Estimated amortization expense
2023 (six months)	1,999
2024	4,006
2025	3,965
2026	3,916
2027	3,904
2028	3,906
Thereafter	48,018
Total	$ 69,714	$ 71,384

REVENUE RECOGNITION - By Produc

REVENUE RECOGNITION - By Product (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Revenue from External Customer [Line Items]
Total revenue	$ 729,150	$ 686,554	$ 1,164,538	$ 1,107,501
Aggregates
Revenue from External Customer [Line Items]
Total revenue	182,512	161,480	326,165	284,873
Cement
Revenue from External Customer [Line Items]
Total revenue	103,607	86,815	152,620	129,369
Ready-mix concrete
Revenue from External Customer [Line Items]
Total revenue	199,570	183,357	338,348	340,920
Asphalt
Revenue from External Customer [Line Items]
Total revenue	91,809	94,141	118,444	111,279
Paving and related services
Revenue from External Customer [Line Items]
Total revenue	89,374	98,610	116,558	129,220
Other
Revenue from External Customer [Line Items]
Total revenue	62,278	62,151	112,403	111,840
Summit Materials, LLC
Revenue from External Customer [Line Items]
Total revenue	729,150	686,554	1,164,538	1,107,501
Summit Materials, LLC | Aggregates
Revenue from External Customer [Line Items]
Total revenue	182,512	161,480	326,165	284,873
Summit Materials, LLC | Cement
Revenue from External Customer [Line Items]
Total revenue	103,607	86,815	152,620	129,369
Summit Materials, LLC | Ready-mix concrete
Revenue from External Customer [Line Items]
Total revenue	199,570	183,357	338,348	340,920
Summit Materials, LLC | Asphalt
Revenue from External Customer [Line Items]
Total revenue	91,809	94,141	118,444	111,279
Summit Materials, LLC | Paving and related services
Revenue from External Customer [Line Items]
Total revenue	89,374	98,610	116,558	129,220
Summit Materials, LLC | Other
Revenue from External Customer [Line Items]
Total revenue	$ 62,278	$ 62,151	$ 112,403	$ 111,840

REVENUE RECOGNITION - Schedule

REVENUE RECOGNITION - Schedule of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 314,590	$ 215,766
Construction contract receivables	52,932	37,067
Retention receivables	10,461	11,048
Accounts receivable	377,983	263,881
Less: Allowance for doubtful accounts	(7,479)	(7,212)
Accounts receivable, net	$ 370,504	256,669
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
General collection and billing period for retention receivables	1 year
Summit Materials, LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 314,590	215,766
Construction contract receivables	52,932	37,067
Retention receivables	10,461	11,048
Accounts receivable	377,983	263,881
Less: Allowance for doubtful accounts	(7,479)	(7,212)
Accounts receivable, net	$ 370,504	$ 256,669
Summit Materials, LLC | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
General collection and billing period for retention receivables	1 year

INVENTORIES - Components of Inv

INVENTORIES - Components of Inventories (Details) - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Inventory [Line Items]
Aggregate stockpiles	$ 157,272	$ 148,347
Finished goods	55,877	33,622
Work in process	9,806	8,191
Raw materials	23,320	22,331
Total	246,275	212,491
Summit Materials, LLC
Inventory [Line Items]
Aggregate stockpiles	157,272	148,347
Finished goods	55,877	33,622
Work in process	9,806	8,191
Raw materials	23,320	22,331
Total	$ 246,275	$ 212,491

ACCRUED EXPENSES - Components o

ACCRUED EXPENSES - Components of Accrued Expenses (Details) - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Schedule Of Accrued Expenses [Line Items]
Interest	$ 36,037	$ 24,625
Payroll and benefits	40,602	34,485
Finance lease obligations	3,499	6,959
Insurance	21,314	18,127
Non-income taxes	13,976	4,360
Deferred asset purchase payments	5,824	5,131
Professional fees	1,755	924
Other	25,653	25,356
Total	148,660	119,967
Summit Materials, LLC
Schedule Of Accrued Expenses [Line Items]
Interest	36,037	24,625
Payroll and benefits	40,602	34,485
Finance lease obligations	3,499	6,959
Insurance	21,314	18,127
Non-income taxes	10,061	5,101
Deferred asset purchase payments	5,824	5,131
Professional fees	1,755	924
Other	25,653	25,356
Total	$ 144,745	$ 120,708

DEBT - Schedule of Debt (Detail

DEBT - Schedule of Debt (Details) - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt	$ 1,502,511	$ 1,504,549
Current portion of long-term debt	5,096	5,096
Long-term debt	1,497,415	1,499,453
Gross amount	1,507,012
Debt discount	4,501
Term Loan, due 2027
Debt Instrument [Line Items]
Total debt	502,511	504,549
Gross amount	507,000	509,600
Debt discount	4,500	5,000
Summit Materials, LLC
Debt Instrument [Line Items]
Total debt	1,502,511	1,504,549
Current portion of long-term debt	5,096	5,096
Long-term debt	1,497,415	1,499,453
Gross amount	1,507,012
Debt discount	4,501
Summit Materials, LLC | Term Loan, due 2027
Debt Instrument [Line Items]
Total debt	502,511	504,549
Gross amount	507,000	509,600
Debt discount	4,500	5,000
Senior Notes | 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Total debt	$ 300,000	300,000
Debt instrument interest rate (as a percent)	6.50%
Senior Notes | 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Total debt	$ 700,000	700,000
Debt instrument interest rate (as a percent)	5.25%
Senior Notes | Summit Materials, LLC | 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Total debt	$ 300,000	300,000
Debt instrument interest rate (as a percent)	6.50%
Senior Notes | Summit Materials, LLC | 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Total debt	$ 700,000	$ 700,000
Debt instrument interest rate (as a percent)	5.25%

DEBT - Schedule of Contractual

DEBT - Schedule of Contractual Payments of Long-Term Debt (Details) $ in Thousands	Jul. 01, 2023 USD ($)
Debt Instrument [Line Items]
2023 (six months)	$ 2,548
2024	3,822
2025	6,369
2026	5,096
2027	789,177
2028	0
Thereafter	700,000
Total	1,507,012
Less: Original issue net discount	(4,501)
Less: Capitalized loan costs	(10,126)
Total debt	1,492,385
Summit Materials, LLC
Debt Instrument [Line Items]
2023 (six months)	2,548
2024	3,822
2025	6,369
2026	5,096
2027	789,177
2028	0
Thereafter	700,000
Total	1,507,012
Less: Original issue net discount	(4,501)
Less: Capitalized loan costs	(10,126)
Total debt	$ 1,492,385

DEBT - Senior Notes (Details)

DEBT - Senior Notes (Details) - USD ($)	Aug. 11, 2020	Mar. 15, 2019	Jul. 01, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term debt			$ 1,502,511,000	$ 1,504,549,000
Issuers | 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Long-term debt	$ 700,000,000
Senior notes, interest rate (as a percent)	5.25%
Proceeds from debt issuances	$ 690,400,000
Issuers | 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Long-term debt		$ 300,000,000
Senior notes, interest rate (as a percent)		6.50%
Senior Notes | 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Long-term debt			$ 700,000,000	700,000,000
Senior notes, interest rate (as a percent)			5.25%
Senior Notes | 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Long-term debt			$ 300,000,000	$ 300,000,000
Senior notes, interest rate (as a percent)			6.50%
Senior Notes | Issuers | 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Percentage of par value of senior notes	100%
Senior Notes | Issuers | 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Percentage of par value of senior notes		100%
Proceeds net of related fees and expenses		$ 296,300,000

DEBT - Senior Secured Credit Fa

DEBT - Senior Secured Credit Facilities (Details) - USD ($)			6 Months Ended		12 Months Ended
	Jan. 10, 2023	Dec. 14, 2022	Jul. 01, 2023	Jul. 02, 2022	Dec. 31, 2022
Debt Instrument [Line Items]
Repayments of term loan			$ 6,720,000	$ 86,821,000
Summit Materials, LLC
Debt Instrument [Line Items]
Repayments of term loan			6,720,000	$ 86,821,000
Term Loan, due 2024 | Summit Materials, LLC
Debt Instrument [Line Items]
Debt instrument, face amount			$ 507,000,000
Quarterly principal repayments percentage			0.25%
Effective interest rate			8.49%
Term Loan, due 2027 | Summit Materials, LLC
Debt Instrument [Line Items]
Debt instrument, face amount		$ 509,600,000
Effective interest rate			8.49%
Repayments of term loan					$ 95,600,000
Term Loan, due 2027 | Summit Materials, LLC | Base Rate or SOFR
Debt Instrument [Line Items]
Basis spread on variable rate		2%
Term Loan, due 2027 | Summit Materials, LLC | Base Rate or SOFR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1%
Term Loan, due 2027 | Summit Materials, LLC | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate		3%
Term Loan, due 2027 | Summit Materials, LLC | Secured Overnight Financing Rate Adjustment
Debt Instrument [Line Items]
Basis spread on variable rate		0.10%
Term Loan, due 2027 | Summit Materials, LLC | Secured Overnight Financing Rate Adjustment | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		0%
Revolving Credit Facility | Summit Materials, LLC
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 395,000,000		$ 395,000,000
Amount outstanding			0		$ 0
Revolving Credit Facility | Summit Materials, LLC | Secured Overnight Financing Rate Adjustment
Debt Instrument [Line Items]
Basis spread on variable rate	0.10%
Revolving Credit Facility | Summit Materials, LLC | Secured Overnight Financing Rate Adjustment | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0%
Senior Secured Credit Facilities | Summit Materials, LLC
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 395,000,000
Quarterly principal repayments percentage			0.25%
Amount outstanding			$ 20,900,000
Remaining borrowing capacity			$ 374,100,000
First lien leverage ratio			4.75

DEBT - Schedule of Activity for

DEBT - Schedule of Activity for Deferred Financing Fees (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022
Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs, Accumulated Amortization [Roll Forward]
Beginning balance	$ 11,489	$ 13,049
Loan origination fees	1,566
Amortization	(1,227)	(1,384)
Write off of deferred financing fees	(160)
Ending balance	11,668	11,665
Summit Materials, LLC
Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs, Accumulated Amortization [Roll Forward]
Beginning balance	11,489	13,049
Loan origination fees	1,566
Amortization	(1,227)	(1,384)
Write off of deferred financing fees	(160)
Ending balance	$ 11,668	$ 11,665

DEBT - Other (Details)

DEBT - Other (Details) - CAD ($)	Jan. 15, 2015	Jul. 01, 2023	Dec. 31, 2022
Canadian Subsidiary Credit Agreement, Operating Activities
Debt Instrument [Line Items]
Revolving credit commitment	$ 6,000,000
Canadian Subsidiary Credit Agreement, Capital Equipment
Debt Instrument [Line Items]
Revolving credit commitment	500,000
Canadian Subsidiary Credit Agreement, Guarantees
Debt Instrument [Line Items]
Revolving credit commitment	1,500,000
Canadian Subsidiary Credit Agreement, Foreign Exchange Facility
Debt Instrument [Line Items]
Revolving credit commitment	$ 10,000,000
Canadian Subsidiary Credit Agreement
Debt Instrument [Line Items]
Amount outstanding		$ 0	$ 0
Prime rate | Canadian Subsidiary Credit Agreement, Operating Activities
Debt Instrument [Line Items]
Basis spread on variable rate	0.20%
Prime rate | Canadian Subsidiary Credit Agreement, Capital Equipment
Debt Instrument [Line Items]
Basis spread on variable rate	0.20%
Summit Materials, LLC | Canadian Subsidiary Credit Agreement, Operating Activities
Debt Instrument [Line Items]
Revolving credit commitment	$ 6,000,000
Summit Materials, LLC | Canadian Subsidiary Credit Agreement, Capital Equipment
Debt Instrument [Line Items]
Revolving credit commitment	500,000
Summit Materials, LLC | Canadian Subsidiary Credit Agreement, Guarantees
Debt Instrument [Line Items]
Revolving credit commitment	$ 1,500,000
Summit Materials, LLC | Canadian Subsidiary Credit Agreement
Debt Instrument [Line Items]
Amount outstanding		$ 0	$ 0
Summit Materials, LLC | Prime rate | Canadian Subsidiary Credit Agreement, Operating Activities
Debt Instrument [Line Items]
Basis spread on variable rate	0.20%
Summit Materials, LLC | Prime rate | Canadian Subsidiary Credit Agreement, Capital Equipment
Debt Instrument [Line Items]
Basis spread on variable rate	0.20%

INCOME TAXES - Narrative (Detai

INCOME TAXES - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022	Dec. 31, 2022
Income Taxes [Line Items]
Income tax expense	$ 22,481,000	$ 53,947,000	$ 16,015,000	$ 49,204,000
Valuation allowance	1,113,000		1,113,000		$ 1,113,000
Income tax provision, interest or penalties recognized	0	0	0	0
Tax receivable agreement liability	322,624,000		322,624,000		327,812,000
Tax Receivable Agreement
Income Taxes [Line Items]
Tax receivable agreement liability	327,800,000		327,800,000		$ 328,400,000
Summit Holdings LP
Income Taxes [Line Items]
Distributions to LP unitholders			$ 0
Summit Holdings LP | Tax Receivable Agreement
Income Taxes [Line Items]
Percentage of benefits to be paid on tax receivable agreement			85%
Summit Materials, LLC
Income Taxes [Line Items]
Income tax expense	7,119,000	5,566,000	$ 6,652,000	12,410,000
Income tax provision, interest or penalties recognized	$ 0	$ 0	$ 0	$ 0
Common Class A
Income Taxes [Line Items]
Exchanges during period (in shares)			2,000
Common Class A | Tax Receivable Agreement
Income Taxes [Line Items]
Exchanges during period (in shares)			2,000

EARNINGS PER SHARE - Schedule o

EARNINGS PER SHARE - Schedule of Basic to Diluted Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Reconciliation of basic to diluted loss per share
Net income attributable to Summit Inc.	$ 83,637	$ 190,113	$ 52,833	$ 155,821
Diluted net income attributable to Summit Inc.	$ 83,637	$ 190,113	$ 52,833	$ 155,821
LP Units
Reconciliation of basic to diluted loss per share
Anti dilutive shares excluded from calculation of earnings per share (in shares)	1,310,004	1,314,006	1,310,630	1,314,006
Common Class A And Restricted Stock
Reconciliation of basic to diluted loss per share
Weighted average shares of Class A stock outstanding (in shares)	118,931,914	120,222,094	118,805,785	120,569,387
Weighted average basic shares outstanding (in shares)	118,931,914	120,222,094	118,805,785	120,569,387
Basic earning per share (in usd per share)	$ 0.70	$ 1.58	$ 0.44	$ 1.29
Common Class A
Reconciliation of basic to diluted loss per share
Weighted average shares of Class A stock outstanding (in shares)	118,848,214	120,078,273	118,706,385	120,417,414
Weighted average basic shares outstanding (in shares)	118,848,214	120,078,273	118,706,385	120,417,414
Basic earning per share (in usd per share)	$ 0.70	$ 1.58	$ 0.44	$ 1.29
Add: warrants (in shares)	13,194	10,413	12,978	12,844
Weighted average dilutive shares outstanding (in shares)	119,393,709	120,660,721	119,431,604	121,374,168
Diluted earning per share (in usd per share)	$ 0.70	$ 1.58	$ 0.44	$ 1.28
Common Class A | Time-vesting stock options
Reconciliation of basic to diluted loss per share
Add: share-based payment arrangements (in shares)	100,895	76,161	99,102	101,094
Common Class A | Add: restricted stock units
Reconciliation of basic to diluted loss per share
Add: share-based payment arrangements (in shares)	193,011	257,454	340,958	533,242
Common Class A | Add: performance stock units
Reconciliation of basic to diluted loss per share
Add: share-based payment arrangements (in shares)	154,695	94,599	172,781	157,601
Restricted Stock
Reconciliation of basic to diluted loss per share
Add: Nonvested restricted stock awards of retirement eligible shares (in shares)	83,700	143,821	99,400	151,973

STOCKHOLDERS' EQUITY_MEMBERS'_3

STOCKHOLDERS' EQUITY/MEMBERS' INTEREST - Narrative (Details) - USD ($)	Jul. 01, 2023	Dec. 31, 2022	Mar. 31, 2022
Summit Holdings LP
Schedule of Capitalization, Equity [Line Items]
Noncontrolling interest elimination (as a percent)	1.10%	1.10%
Common Class A
Schedule of Capitalization, Equity [Line Items]
Share repurchase program, authorized amount			$ 250,000,000
Remaining authorized repurchase amount	$ 149,000,000

STOCKHOLDERS' EQUITY_MEMBERS'_4

STOCKHOLDERS' EQUITY/MEMBERS' INTEREST - Equity Offerings (Details) - shares	6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Dec. 31, 2022	Jan. 01, 2022
Common Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	118,408,655	120,684,322
Exchanges during period (in shares)	2,000
Stock option exercises (in shares)	4,240	6,518
Repurchases of common stock, (in shares)		(1,506,878)
Other equity transactions (in shares)	471,379	909,864
Ending balance (in shares)	118,886,274	120,093,826
Summit Materials, Inc. and Summit Holdings, LP
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	119,720,659	121,998,328
Exchanges during period (in shares)	0
Stock option exercises (in shares)	4,240	6,518
Repurchases of common stock, (in shares)		(1,506,878)
Other equity transactions (in shares)	471,379	909,864
Ending balance (in shares)	120,196,278	121,407,832
LP Units | Summit Holdings LP
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Number of LP Units outstanding, beginning balance (in shares)	1,312,004	1,314,006
Number of LP Units exchanged (in shares)	(2,000)
Number of LP Units outstanding, ending balance (in shares)	1,310,004	1,314,006
Summit Materials Inc
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Ownership percentage	98.90%	98.90%	98.90%	98.90%

STOCKHOLDERS' EQUITY_MEMBERS'_5

STOCKHOLDERS' EQUITY/MEMBERS' INTEREST - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022
Changes in each component of accumulated other comprehensive loss
Beginning balance	$ 2,011,990	$ 1,823,212
Foreign currency translation adjustment, net of tax	3,242	(2,890)
Ending balance	2,073,964	1,940,802
Summit Materials, LLC
Changes in each component of accumulated other comprehensive loss
Beginning balance	2,143,150	1,884,944
Foreign currency translation adjustment, net of tax	4,105	(3,866)
Ending balance	2,215,304	2,039,348
Change in retirement plans
Changes in each component of accumulated other comprehensive loss
Beginning balance	6,356	1,508
Ending balance	6,356	1,508
Change in retirement plans | Summit Materials, LLC
Changes in each component of accumulated other comprehensive loss
Beginning balance	(762)	(7,243)
Ending balance	(762)	(7,243)
Foreign currency translation adjustments
Changes in each component of accumulated other comprehensive loss
Beginning balance	(3,272)	5,575
Foreign currency translation adjustment, net of tax	3,242	(2,890)
Ending balance	(30)	2,685
Foreign currency translation adjustments | Summit Materials, LLC
Changes in each component of accumulated other comprehensive loss
Beginning balance	(20,614)	(8,783)
Foreign currency translation adjustment, net of tax	4,105	(3,866)
Ending balance	(16,509)	(12,649)
Accumulated Other Comprehensive Income
Changes in each component of accumulated other comprehensive loss
Beginning balance	3,084	7,083
Ending balance	6,326	4,193
Accumulated Other Comprehensive Income | Summit Materials, LLC
Changes in each component of accumulated other comprehensive loss
Beginning balance	(21,376)	(16,026)
Ending balance	$ (17,271)	$ (19,892)

SUPPLEMENTAL CASH FLOW INFORM_3

SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022
Cash payments:
Interest	$ 38,107	$ 36,115
Payments for income taxes, net	6,941	8,503
Operating cash payments on operating leases	4,801	4,652
Operating cash payments on finance leases	282	646
Finance cash payments on finance leases	5,223	11,297
Non cash investing and financing activities:
Accrued liabilities for purchases of property, plant and equipment	14,994	20,225
Right of use assets obtained in exchange for operating lease obligations	2,050	9,312
Right of use assets obtained in exchange for finance leases obligations	413	258
Exchange of LP Units to shares of Class A common stock	60	0
Summit Materials, LLC
Cash payments:
Interest	38,107	36,115
Payments for income taxes, net	6,941	8,503
Operating cash payments on operating leases	4,801	4,652
Operating cash payments on finance leases	282	646
Finance cash payments on finance leases	5,223	11,297
Non cash investing and financing activities:
Accrued liabilities for purchases of property, plant and equipment	14,994	20,225
Right of use assets obtained in exchange for operating lease obligations	2,050	9,312
Right of use assets obtained in exchange for finance leases obligations	$ 413	$ 258

LEASES - Operating and Finance

LEASES - Operating and Finance Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022	Dec. 31, 2022
Lease, Cost [Abstract]
Operating lease cost	$ 2,697	$ 2,271	$ 5,338	$ 4,783
Variable lease cost	34	42	64	155
Short-term lease cost	10,184	10,933	17,454	19,181
Financing lease cost:
Amortization of right-of-use assets	714	1,377	1,532	3,363
Interest on lease liabilities	133	271	281	640
Total lease cost	13,762	14,894	24,669	28,122
Operating leases:
Operating lease right-of-use assets	36,013		36,013		$ 37,889
Current operating lease liabilities	7,707		7,707		7,296
Noncurrent operating lease liabilities	33,563		33,563		35,737
Total operating lease liabilities	41,270		41,270		43,033
Finance leases:
Property and equipment, gross	21,515		21,515		32,119
Less accumulated depreciation	$ (10,101)		$ (10,101)		$ (14,992)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net		Property, plant and equipment, net		Property, plant and equipment, net
Property and equipment, net	$ 11,414		$ 11,414		$ 17,127
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses		Accrued expenses		Accrued expenses
Current finance lease liabilities	$ 3,499		$ 3,499		$ 6,959
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other noncurrent liabilities		Other noncurrent liabilities		Other noncurrent liabilities
Long-term finance lease liabilities	$ 5,820		$ 5,820		$ 7,167
Total finance lease liabilities	$ 9,319		$ 9,319		$ 14,126
Weighted average remaining lease term (years):
Operating leases	8 years 9 months 18 days		8 years 9 months 18 days		9 years 1 month 6 days
Finance lease	3 years 6 months		3 years 6 months		2 years 9 months 18 days
Weighted average discount rate:
Operating leases	4.80%		4.80%		4.70%
Finance leases	5.70%		5.70%		5.30%
Operating Leases
2023 (six months)	$ 4,831		$ 4,831
2024	8,762		8,762
2025	6,787		6,787
2026	5,242		5,242
2027	4,233		4,233
2028	3,432		3,432
Thereafter	17,664		17,664
Total lease payments	50,951		50,951
Less imputed interest	(9,681)		(9,681)
Present value of lease payments	41,270		41,270		$ 43,033
Finance Leases
2023 (six months)	2,142		2,142
2024	3,052		3,052
2025	2,435		2,435
2026	990		990
2027	760		760
2028	513		513
Thereafter	570		570
Total lease payments	10,462		10,462
Less imputed interest	(1,143)		(1,143)
Present value of lease payments	9,319		9,319		14,126
Summit Materials, LLC
Lease, Cost [Abstract]
Operating lease cost	2,697	2,271	5,338	4,783
Variable lease cost	34	42	64	155
Short-term lease cost	10,184	10,933	17,454	19,181
Financing lease cost:
Amortization of right-of-use assets	714	1,377	1,532	3,363
Interest on lease liabilities	133	271	281	640
Total lease cost	13,762	$ 14,894	24,669	$ 28,122
Operating leases:
Operating lease right-of-use assets	36,013		36,013		37,889
Current operating lease liabilities	7,707		7,707		7,296
Noncurrent operating lease liabilities	33,563		33,563		35,737
Total operating lease liabilities	41,270		41,270		43,033
Finance leases:
Property and equipment, gross	21,515		21,515		32,119
Less accumulated depreciation	$ (10,101)		$ (10,101)		$ (14,992)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net		Property, plant and equipment, net		Property, plant and equipment, net
Property and equipment, net	$ 11,414		$ 11,414		$ 17,127
Current finance lease liabilities	3,499		3,499		6,959
Long-term finance lease liabilities	5,820		5,820		7,167
Total finance lease liabilities	$ 9,319		$ 9,319		$ 14,126
Weighted average remaining lease term (years):
Operating leases	8 years 9 months 18 days		8 years 9 months 18 days		9 years 1 month 6 days
Finance lease	3 years 6 months		3 years 6 months		2 years 9 months 18 days
Weighted average discount rate:
Operating leases	4.80%		4.80%		4.70%
Finance leases	5.70%		5.70%		5.30%
Operating Leases
2023 (six months)	$ 4,831		$ 4,831
2024	8,762		8,762
2025	6,787		6,787
2026	5,242		5,242
2027	4,233		4,233
2028	3,432		3,432
Thereafter	17,664		17,664
Total lease payments	50,951		50,951
Less imputed interest	(9,681)		(9,681)
Present value of lease payments	41,270		41,270		$ 43,033
Finance Leases
2023 (six months)	2,142		2,142
2024	3,052		3,052
2025	2,435		2,435
2026	990		990
2027	760		760
2028	513		513
Thereafter	570		570
Total lease payments	10,462		10,462
Less imputed interest	(1,143)		(1,143)
Present value of lease payments	$ 9,319		$ 9,319		$ 14,126

COMMITMENTS AND CONTINGENCIES -

COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2023	Dec. 31, 2022
Loss Contingencies [Line Items]
Anticipated costs	$ 125.2	$ 124.9
Term of purchase commitments	1 year
Site Restoration Obligations | Other noncurrent liabilities
Loss Contingencies [Line Items]
Site restoration obligation, non-current	$ 36.6	36.3
Site Restoration Obligations | Accrued expenses.
Loss Contingencies [Line Items]
Site restoration obligation, current	$ 4.9	4
Summit Materials, LLC
Loss Contingencies [Line Items]
Term of purchase commitments	1 year
Summit Materials, LLC | Site Restoration Obligations
Loss Contingencies [Line Items]
Anticipated costs	$ 125.2	124.9
Summit Materials, LLC | Site Restoration Obligations | Other noncurrent liabilities
Loss Contingencies [Line Items]
Site restoration obligation, non-current	36.6	36.3
Summit Materials, LLC | Site Restoration Obligations | Accrued expenses.
Loss Contingencies [Line Items]
Site restoration obligation, current	$ 4.9	$ 4

FAIR VALUE - Fair Value Measure

FAIR VALUE - Fair Value Measurements (Details) - Level 3 $ in Thousands	6 Months Ended
	Jul. 01, 2023 USD ($)	Jul. 02, 2022 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of acquisition-related liabilities and Accrued expenses - Contingent consideration	$ 336		$ 336
Acquisition-related liabilities and Other noncurrent liabilities - Contingent consideration	5,102		4,981
Adjustment to contingent consideration	0	$ 0
Summit Materials, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of acquisition-related liabilities and Accrued expenses - Contingent consideration	336		336
Acquisition-related liabilities and Other noncurrent liabilities - Contingent consideration	5,102		$ 4,981
Adjustment to contingent consideration	$ 0	$ 0
Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration fair value measurement input	0.100
Discount Rate | Summit Materials, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration fair value measurement input	0.100

FAIR VALUE - Carrying Value and

FAIR VALUE - Carrying Value and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Financial Instruments
Current portion of long-term debt	$ 5,096	$ 5,096
Summit Materials, LLC
Financial Instruments
Current portion of long-term debt	5,096	5,096
Level 1 | Fair Value
Financial Instruments
Long-term debt	1,456,913	1,447,673
Level 1 | Carrying Value
Financial Instruments
Long-term debt	1,502,511	1,504,549
Level 1 | Summit Materials, LLC
Financial Instruments
Current portion of long-term debt	5,100	5,100
Level 1 | Summit Materials, LLC | Fair Value
Financial Instruments
Long-term debt	1,456,913	1,447,673
Level 1 | Summit Materials, LLC | Carrying Value
Financial Instruments
Long-term debt	1,502,511	1,504,549
Level 3 | Fair Value
Financial Instruments
Current portion of deferred consideration and noncompete obligations	6,907	13,382
Long term portion of deferred consideration and noncompete obligations	18,401	24,070
Level 3 | Carrying Value
Financial Instruments
Current portion of deferred consideration and noncompete obligations	6,907	13,382
Long term portion of deferred consideration and noncompete obligations	18,401	24,070
Level 3 | Summit Materials, LLC | Fair Value
Financial Instruments
Current portion of deferred consideration and noncompete obligations	6,907	13,382
Long term portion of deferred consideration and noncompete obligations	18,401	24,070
Level 3 | Summit Materials, LLC | Carrying Value
Financial Instruments
Current portion of deferred consideration and noncompete obligations	6,907	13,382
Long term portion of deferred consideration and noncompete obligations	18,401	24,070
Fair Value, Inputs, Level 1 | Fair Value
Financial Instruments
Current portion of long-term debt	$ 5,100	$ 5,100

SEGMENT INFORMATION - Financial

SEGMENT INFORMATION - Financial Data (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023 USD ($)	Jul. 02, 2022 USD ($)	Jul. 01, 2023 USD ($) segment	Jul. 02, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			3
Number of reportable segments | segment			3
Total revenue	$ 729,150	$ 686,554	$ 1,164,538	$ 1,107,501
Income from operations before taxes	107,209	246,713	69,531	207,170
Interest expense	27,902	20,599	55,322	40,748
Depreciation, depletion and amortization	54,042	46,455	104,230	96,934
Accretion	745	702	1,451	1,416
Loss on debt financings	0	0	493	0
Tax receivable agreement expense	0	954	0	954
Gain on sale of businesses	0	(156,053)	0	(170,258)
Non-cash compensation	5,216	4,734	9,924	10,156
Other	(3,369)	(70)	(8,005)	177
Total Adjusted EBITDA	191,745	164,034	232,946	187,297
Total purchases of property, plant and equipment			126,893	129,580
Total depreciation, depletion, amortization and accretion	54,787	47,157	105,681	98,350
Total assets	4,395,487		4,395,487		$ 4,255,692
Operating segment
Segment Reporting Information [Line Items]
Total purchases of property, plant and equipment			120,542	123,922
Total depreciation, depletion, amortization and accretion	53,753	46,387	103,659	96,831
Total assets	4,026,126		4,026,126		3,590,603
Corporate and other
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	(13,261)	(10,545)	(23,600)	(22,291)
Total purchases of property, plant and equipment			6,351	5,658
Total depreciation, depletion, amortization and accretion	1,034	770	2,022	1,519
Total assets	369,361		369,361		665,089
West
Segment Reporting Information [Line Items]
Total revenue	430,738	383,750	681,620	635,982
West | Operating segment
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	104,517	84,644	137,195	117,336
Total purchases of property, plant and equipment			70,687	58,137
Total depreciation, depletion, amortization and accretion	28,144	22,012	54,517	46,587
Total assets	1,919,824		1,919,824		1,565,776
East
Segment Reporting Information [Line Items]
Total revenue	186,537	209,153	316,926	331,643
East | Operating segment
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	47,617	46,694	66,469	54,830
Total purchases of property, plant and equipment			30,378	45,910
Total depreciation, depletion, amortization and accretion	15,718	14,915	31,253	33,210
Total assets	1,181,536		1,181,536		1,151,223
Cement
Segment Reporting Information [Line Items]
Total revenue	111,875	93,651	165,992	139,876
Cement | Operating segment
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	52,872	43,241	52,882	37,422
Total purchases of property, plant and equipment			19,477	19,875
Total depreciation, depletion, amortization and accretion	9,891	9,460	17,889	17,034
Total assets	924,766		$ 924,766		873,604
Summit Materials, LLC
Segment Reporting Information [Line Items]
Number of operating segments | segment			3
Number of reportable segments | segment			3
Total revenue	729,150	686,554	$ 1,164,538	1,107,501
Income from operations before taxes	107,209	247,667	69,531	208,124
Interest expense	27,902	20,599	55,322	40,748
Depreciation, depletion and amortization	54,042	46,455	104,230	96,934
Accretion	745	702	1,451	1,416
Loss on debt financings	0	0	493	0
Gain on sale of businesses	0	(156,053)	0	(170,258)
Non-cash compensation	5,216	4,734	9,924	10,156
Other	(3,369)	(70)	(8,005)	177
Total Adjusted EBITDA	191,745	164,034	232,946	187,297
Total purchases of property, plant and equipment			126,893	129,580
Total depreciation, depletion, amortization and accretion	54,787	47,157	105,681	98,350
Total assets	4,269,670		4,269,670		4,119,706
Summit Materials, LLC | Operating segment
Segment Reporting Information [Line Items]
Total purchases of property, plant and equipment			120,542	123,922
Total depreciation, depletion, amortization and accretion	53,753	46,387	103,659	96,831
Total assets	4,026,126		4,026,126		3,590,603
Summit Materials, LLC | Corporate and other
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	(13,261)	(10,545)	(23,600)	(22,291)
Total purchases of property, plant and equipment			6,351	5,658
Total depreciation, depletion, amortization and accretion	1,034	770	2,022	1,519
Total assets	243,544		243,544		529,103
Summit Materials, LLC | West
Segment Reporting Information [Line Items]
Total revenue	430,738	383,750	681,620	635,982
Summit Materials, LLC | West | Operating segment
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	104,517	84,644	137,195	117,336
Total purchases of property, plant and equipment			70,687	58,137
Total depreciation, depletion, amortization and accretion	28,144	22,012	54,517	46,587
Total assets	1,919,824		1,919,824		1,565,776
Summit Materials, LLC | East
Segment Reporting Information [Line Items]
Total revenue	186,537	209,153	316,926	331,643
Summit Materials, LLC | East | Operating segment
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	47,617	46,694	66,469	54,830
Total purchases of property, plant and equipment			30,378	45,910
Total depreciation, depletion, amortization and accretion	15,718	14,915	31,253	33,210
Total assets	1,181,536		1,181,536		1,151,223
Summit Materials, LLC | Cement
Segment Reporting Information [Line Items]
Total revenue	111,875	93,651	165,992	139,876
Summit Materials, LLC | Cement | Operating segment
Segment Reporting Information [Line Items]
Total Adjusted EBITDA	52,872	43,241	52,882	37,422
Total purchases of property, plant and equipment			19,477	19,875
Total depreciation, depletion, amortization and accretion	9,891	$ 9,460	17,889	$ 17,034
Total assets	$ 924,766		$ 924,766		$ 873,604

GUARANTOR AND NON-GUARANTOR F_3

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Schedule of Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands	Jul. 01, 2023	Apr. 01, 2023	Dec. 31, 2022	Jul. 02, 2022	Apr. 02, 2022	Jan. 01, 2022
Current assets:
Cash and cash equivalents	$ 230,010		$ 520,451
Accounts receivable, net	370,504		256,669
Cost and estimated earnings in excess of billings	35,315		6,510
Inventories	246,275		212,491
Total current assets	906,302		1,018,376
Property, plant and equipment, net	1,979,986		1,813,702
Goodwill	1,228,468		1,132,546
Intangible assets, net	69,714		71,384
Operating lease right-of-use assets	36,013		37,889
Total assets	4,395,487		4,255,692
Current liabilities:
Current portion of debt	5,096		5,096
Current portion of acquisition-related liabilities	7,243		13,718
Accounts payable	171,221		104,031
Current operating lease liabilities	7,707		7,296
Billings in excess of costs and estimated earnings	7,054		5,739
Total current liabilities	346,981		255,847
Long-term debt	1,487,289		1,488,569
Acquisition-related liabilities	23,503		29,051
Noncurrent operating lease liabilities	33,563		35,737
Total liabilities	2,321,523		2,243,702
Total liabilities and members' interest	4,395,487		4,255,692
Summit Materials, LLC
Current assets:
Cash and cash equivalents	230,010		520,451
Accounts receivable, net	370,504		256,669
Intercompany receivables	0		0
Cost and estimated earnings in excess of billings	35,315		6,510
Inventories	246,275		212,491
Other current assets	24,198		22,255
Total current assets	906,302		1,018,376
Property, plant and equipment, net	1,979,986		1,813,702
Goodwill	1,229,468		1,133,546
Intangible assets, net	69,714		71,384
Operating lease right-of-use assets	36,013		37,889
Other assets	48,187		44,809
Total assets	4,269,670		4,119,706
Current liabilities:
Current portion of debt	5,096		5,096
Current portion of acquisition-related liabilities	7,243		13,718
Accounts payable	171,076		104,430
Accrued expenses	144,745		120,708
Current operating lease liabilities	7,707		7,296
Intercompany payables	0		0
Billings in excess of costs and estimated earnings	7,054		5,739
Total current liabilities	342,921		256,987
Long-term debt	1,487,289		1,488,569
Acquisition-related liabilities	23,503		29,051
Noncurrent operating lease liabilities	33,563		35,737
Other noncurrent liabilities	167,090		166,212
Total liabilities	2,054,366		1,976,556
Total member's interest	2,215,304	$ 2,105,146	2,143,150	$ 2,039,348	$ 1,797,061	$ 1,884,944
Total liabilities and members' interest	4,269,670		4,119,706
Summit Materials, LLC | Eliminations
Current assets:
Cash and cash equivalents	(5,375)		(7,018)
Accounts receivable, net	(91)		(25)
Intercompany receivables	(2,296,652)		(2,267,134)
Cost and estimated earnings in excess of billings	0		0
Inventories	0		0
Other current assets	0		0
Total current assets	(2,302,118)		(2,274,177)
Property, plant and equipment, net	0		0
Goodwill	0		0
Intangible assets, net	0		0
Operating lease right-of-use assets	0		0
Other assets	(5,185,889)		(4,760,543)
Total assets	(7,488,007)		(7,034,720)
Current liabilities:
Current portion of debt	0		0
Current portion of acquisition-related liabilities	0		0
Accounts payable	(91)		(25)
Accrued expenses	(5,375)		(7,018)
Current operating lease liabilities	0		0
Intercompany payables	(2,296,652)		(2,267,134)
Billings in excess of costs and estimated earnings	0		0
Total current liabilities	(2,302,118)		(2,274,177)
Long-term debt	0		0
Acquisition-related liabilities	0		0
Noncurrent operating lease liabilities	0		0
Other noncurrent liabilities	(164,421)		(164,421)
Total liabilities	(2,466,539)		(2,438,598)
Total member's interest	(5,021,468)		(4,596,122)
Total liabilities and members' interest	(7,488,007)		(7,034,720)
Summit Materials, LLC | Issuers | Reportable Legal Entities
Current assets:
Cash and cash equivalents	197,481		498,307
Accounts receivable, net	603		1,528
Intercompany receivables	311,267		329,744
Cost and estimated earnings in excess of billings	0		0
Inventories	0		0
Other current assets	11,596		4,755
Total current assets	520,947		834,334
Property, plant and equipment, net	27,660		21,306
Goodwill	0		0
Intangible assets, net	0		0
Operating lease right-of-use assets	4,225		4,665
Other assets	5,016,546		4,599,488
Total assets	5,569,378		5,459,793
Current liabilities:
Current portion of debt	5,096		5,096
Current portion of acquisition-related liabilities	0		0
Accounts payable	5,622		3,553
Accrued expenses	64,653		54,417
Current operating lease liabilities	946		921
Intercompany payables	1,776,656		1,750,352
Billings in excess of costs and estimated earnings	0		0
Total current liabilities	1,852,973		1,814,339
Long-term debt	1,487,289		1,488,569
Acquisition-related liabilities	0		0
Noncurrent operating lease liabilities	8,315		8,726
Other noncurrent liabilities	5,497		5,009
Total liabilities	3,354,074		3,316,643
Total member's interest	2,215,304		2,143,150
Total liabilities and members' interest	5,569,378		5,459,793
Summit Materials, LLC | Guarantors  | Reportable Legal Entities
Current assets:
Cash and cash equivalents	5,698		2,864
Accounts receivable, net	341,501		233,039
Intercompany receivables	1,985,385		1,937,390
Cost and estimated earnings in excess of billings	33,533		5,861
Inventories	239,848		206,418
Other current assets	11,143		16,341
Total current assets	2,617,108		2,401,913
Property, plant and equipment, net	1,871,238		1,710,972
Goodwill	1,171,500		1,076,935
Intangible assets, net	65,279		66,972
Operating lease right-of-use assets	27,149		28,310
Other assets	216,720		204,644
Total assets	5,968,994		5,489,746
Current liabilities:
Current portion of debt	0		0
Current portion of acquisition-related liabilities	7,243		13,718
Accounts payable	153,815		93,096
Accrued expenses	82,359		70,433
Current operating lease liabilities	6,099		5,637
Intercompany payables	516,160		513,494
Billings in excess of costs and estimated earnings	6,313		4,956
Total current liabilities	771,989		701,334
Long-term debt	0		0
Acquisition-related liabilities	23,503		29,051
Noncurrent operating lease liabilities	21,355		22,871
Other noncurrent liabilities	208,578		208,185
Total liabilities	1,025,425		961,441
Total member's interest	4,943,569		4,528,305
Total liabilities and members' interest	5,968,994		5,489,746
Summit Materials, LLC | Non-Guarantors | Reportable Legal Entities
Current assets:
Cash and cash equivalents	32,206		26,298
Accounts receivable, net	28,491		22,127
Intercompany receivables	0		0
Cost and estimated earnings in excess of billings	1,782		649
Inventories	6,427		6,073
Other current assets	1,459		1,159
Total current assets	70,365		56,306
Property, plant and equipment, net	81,088		81,424
Goodwill	57,968		56,611
Intangible assets, net	4,435		4,412
Operating lease right-of-use assets	4,639		4,914
Other assets	810		1,220
Total assets	219,305		204,887
Current liabilities:
Current portion of debt	0		0
Current portion of acquisition-related liabilities	0		0
Accounts payable	11,730		7,806
Accrued expenses	3,108		2,876
Current operating lease liabilities	662		738
Intercompany payables	3,836		3,288
Billings in excess of costs and estimated earnings	741		783
Total current liabilities	20,077		15,491
Long-term debt	0		0
Acquisition-related liabilities	0		0
Noncurrent operating lease liabilities	3,893		4,140
Other noncurrent liabilities	117,436		117,439
Total liabilities	141,406		137,070
Total member's interest	77,899		67,817
Total liabilities and members' interest	$ 219,305		$ 204,887

GUARANTOR AND NON-GUARANTOR F_4

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Schedule of Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Condensed Consolidating Statements of Operations
Total revenue	$ 729,150	$ 686,554	$ 1,164,538	$ 1,107,501
Cost of revenue (excluding items shown separately below)	492,403	484,205	846,440	837,585
Depreciation, depletion, amortization and accretion	54,787	47,157	105,681	98,350
Operating income	129,633	111,236	114,158	76,941
Gain on sale of business	0	(156,053)	0	(170,258)
Income from operations before taxes	107,209	246,713	69,531	207,170
Income tax expense	22,481	53,947	16,015	49,204
Net income attributable to Summit Inc.	83,637	190,113	52,833	155,821
Comprehensive income attributable to member of Summit Materials, LLC	86,718	185,917	56,075	152,931
Summit Materials, LLC
Condensed Consolidating Statements of Operations
Total revenue	729,150	686,554	1,164,538	1,107,501
Cost of revenue (excluding items shown separately below)	492,403	484,205	846,440	837,585
General and administrative expenses	52,327	43,956	98,259	94,625
Depreciation, depletion, amortization and accretion	54,787	47,157	105,681	98,350
Operating income	129,633	111,236	114,158	76,941
Other (income) loss, net	(5,478)	(977)	(10,695)	(1,673)
Interest expense (income)	27,902	20,599	55,322	40,748
Gain on sale of business	0	(156,053)	0	(170,258)
Income from operations before taxes	107,209	247,667	69,531	208,124
Income tax expense	7,119	5,566	6,652	12,410
Net income attributable to Summit Inc.	100,090	242,101	62,879	195,714
Comprehensive income attributable to member of Summit Materials, LLC	103,992	236,491	66,984	191,848
Summit Materials, LLC | Eliminations
Condensed Consolidating Statements of Operations
Total revenue	(1,563)	(4,160)	(2,358)	(5,490)
Cost of revenue (excluding items shown separately below)	(1,563)	(4,160)	(2,358)	(5,490)
General and administrative expenses	0	0	0	0
Depreciation, depletion, amortization and accretion	0	0	0	0
Operating income	0	0	0	0
Other (income) loss, net	157,097	166,158	171,811	171,940
Interest expense (income)	0	0	0	0
Gain on sale of business		0		0
Income from operations before taxes	(157,097)	(166,158)	(171,811)	(171,940)
Income tax expense	0	0	0	0
Net income attributable to Summit Inc.	(157,097)	(166,158)	(171,811)	(171,940)
Comprehensive income attributable to member of Summit Materials, LLC	(153,195)	(171,768)	(167,706)	(175,806)
Issuers | Summit Materials, LLC | Reportable Legal Entities
Condensed Consolidating Statements of Operations
Total revenue	0	0	0	0
Cost of revenue (excluding items shown separately below)	0	0	0	0
General and administrative expenses	18,653	15,919	33,873	33,223
Depreciation, depletion, amortization and accretion	1,034	769	2,022	1,518
Operating income	(19,687)	(16,688)	(35,895)	(34,741)
Other (income) loss, net	(160,703)	(166,798)	(179,850)	(172,716)
Interest expense (income)	40,430	33,579	80,276	67,481
Gain on sale of business		(126,601)		(126,601)
Income from operations before taxes	100,586	243,132	63,679	197,095
Income tax expense	496	1,031	800	1,381
Net income attributable to Summit Inc.	100,090	242,101	62,879	195,714
Comprehensive income attributable to member of Summit Materials, LLC	103,992	236,491	66,984	191,848
Guarantors  | Summit Materials, LLC | Reportable Legal Entities
Condensed Consolidating Statements of Operations
Total revenue	695,912	656,952	1,104,334	1,052,132
Cost of revenue (excluding items shown separately below)	469,869	464,383	805,079	798,647
General and administrative expenses	32,007	26,426	60,955	58,099
Depreciation, depletion, amortization and accretion	50,918	43,342	98,071	90,839
Operating income	143,118	122,801	140,229	104,547
Other (income) loss, net	(1,271)	(433)	(1,547)	(986)
Interest expense (income)	(13,898)	(14,350)	(27,694)	(29,473)
Gain on sale of business		(29,452)		(43,657)
Income from operations before taxes	158,287	167,036	169,470	178,663
Income tax expense	5,146	3,548	3,635	9,866
Net income attributable to Summit Inc.	153,141	163,488	165,835	168,797
Comprehensive income attributable to member of Summit Materials, LLC	153,141	163,488	165,835	168,797
Non-Guarantors | Summit Materials, LLC | Reportable Legal Entities
Condensed Consolidating Statements of Operations
Total revenue	34,801	33,762	62,562	60,859
Cost of revenue (excluding items shown separately below)	24,097	23,982	43,719	44,428
General and administrative expenses	1,667	1,611	3,431	3,303
Depreciation, depletion, amortization and accretion	2,835	3,046	5,588	5,993
Operating income	6,202	5,123	9,824	7,135
Other (income) loss, net	(601)	96	(1,109)	89
Interest expense (income)	1,370	1,370	2,740	2,740
Gain on sale of business		0		0
Income from operations before taxes	5,433	3,657	8,193	4,306
Income tax expense	1,477	987	2,217	1,163
Net income attributable to Summit Inc.	3,956	2,670	5,976	3,143
Comprehensive income attributable to member of Summit Materials, LLC	$ 54	$ 8,280	$ 1,871	$ 7,009

GUARANTOR AND NON-GUARANTOR F_5

GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Schedule of Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Dec. 31, 2022
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	$ 94,042	$ 16,254
Cash flows from investing activities:
Acquisitions, net of cash acquired	(237,666)	(1,933)
Purchase of property, plant and equipment	(126,893)	(129,580)
Proceeds from the sale of property, plant, and equipment	5,760	5,427
Proceeds from sale of businesses	0	341,741
Other	(1,852)	(1,098)
Net cash (used in) provided by financing activities	(360,651)	214,557
Cash flows from financing activities:
Payments on long-term debt	(6,720)	(86,821)
Payments on acquisition-related liabilities	(11,539)	(11,577)
Distributions from partnership	0	(25)
Debt issuance costs	(1,566)
Other	(4,838)	(187)
Net cash used in financing activities	(24,579)	(145,996)
Impact of foreign currency on cash	747	(461)
Net (decrease) increase in cash	(290,441)	84,354
Cash and cash equivalents – beginning of period	520,451	380,961	$ 380,961
Cash and cash equivalents – end of period	230,010	465,315	520,451
Summit Materials, LLC
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	94,042	16,254
Cash flows from investing activities:
Acquisitions, net of cash acquired	(237,666)	(1,933)
Purchase of property, plant and equipment	(126,893)	(129,580)
Proceeds from the sale of property, plant, and equipment	5,760	5,427
Proceeds from sale of businesses	0	341,741
Other	(1,852)	(1,098)
Net cash (used in) provided by financing activities	(360,651)	214,557
Cash flows from financing activities:
Capital distributions to member	84	(47,386)
Loans received from and payments made on loans from other Summit Companies	0	0
Payments on long-term debt	(6,720)	(86,821)
Payments on acquisition-related liabilities	(11,539)	(11,577)
Distributions from partnership	0	(25)
Debt issuance costs	(1,566)
Other	(4,838)	(187)
Net cash used in financing activities	(24,579)	(145,996)
Impact of foreign currency on cash	747	(461)
Net (decrease) increase in cash	(290,441)	84,354
Cash and cash equivalents – beginning of period	520,451	380,961	380,961
Cash and cash equivalents – end of period	230,010	465,315	520,451
Summit Materials, LLC | Eliminations
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	0	0
Cash flows from investing activities:
Acquisitions, net of cash acquired	0	0
Purchase of property, plant and equipment	0	0
Proceeds from the sale of property, plant, and equipment	0	0
Proceeds from sale of businesses		0
Other	0	0
Net cash (used in) provided by financing activities	0	0
Cash flows from financing activities:
Capital distributions to member	0	0
Loans received from and payments made on loans from other Summit Companies	1,643	621
Payments on long-term debt	0	0
Payments on acquisition-related liabilities	0	0
Distributions from partnership		0
Debt issuance costs	0
Other	0	0
Net cash used in financing activities	1,643	621
Impact of foreign currency on cash	0	0
Net (decrease) increase in cash	1,643	621
Cash and cash equivalents – beginning of period	(7,018)	(4,684)	(4,684)
Cash and cash equivalents – end of period	(5,375)	(4,063)	(7,018)
Summit Materials, LLC | Issuers | Reportable Legal Entities
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	(62,840)	(63,758)
Cash flows from investing activities:
Acquisitions, net of cash acquired	0	0
Purchase of property, plant and equipment	(6,350)	(5,657)
Proceeds from the sale of property, plant, and equipment	0	0
Proceeds from sale of businesses		0
Other	0	0
Net cash (used in) provided by financing activities	(6,350)	(5,657)
Cash flows from financing activities:
Capital distributions to member	(239,264)	(49,319)
Loans received from and payments made on loans from other Summit Companies	13,332	275,632
Payments on long-term debt	(2,548)	(75,553)
Payments on acquisition-related liabilities	0	0
Distributions from partnership		(25)
Debt issuance costs	(1,566)
Other	(1,590)	(187)
Net cash used in financing activities	(231,636)	150,548
Impact of foreign currency on cash	0	0
Net (decrease) increase in cash	(300,826)	81,133
Cash and cash equivalents – beginning of period	498,307	365,044	365,044
Cash and cash equivalents – end of period	197,481	446,177	498,307
Summit Materials, LLC | Guarantors  | Reportable Legal Entities
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	146,620	73,145
Cash flows from investing activities:
Acquisitions, net of cash acquired	(237,666)	(1,933)
Purchase of property, plant and equipment	(117,310)	(121,589)
Proceeds from the sale of property, plant, and equipment	5,435	5,182
Proceeds from sale of businesses		341,741
Other	(1,852)	(1,098)
Net cash (used in) provided by financing activities	(351,393)	222,303
Cash flows from financing activities:
Capital distributions to member	239,348	1,933
Loans received from and payments made on loans from other Summit Companies	(12,997)	(273,262)
Payments on long-term debt	(4,172)	(11,268)
Payments on acquisition-related liabilities	(11,539)	(11,577)
Distributions from partnership		0
Debt issuance costs	0
Other	(3,033)	0
Net cash used in financing activities	207,607	(294,174)
Impact of foreign currency on cash	0	0
Net (decrease) increase in cash	2,834	1,274
Cash and cash equivalents – beginning of period	2,864	2,264	2,264
Cash and cash equivalents – end of period	5,698	3,538	2,864
Summit Materials, LLC | Non-Guarantors | Reportable Legal Entities
Condensed Consolidating Statements of Operations
Net cash (used in) provided by operating activities	10,262	6,867
Cash flows from investing activities:
Acquisitions, net of cash acquired	0	0
Purchase of property, plant and equipment	(3,233)	(2,334)
Proceeds from the sale of property, plant, and equipment	325	245
Proceeds from sale of businesses		0
Other	0	0
Net cash (used in) provided by financing activities	(2,908)	(2,089)
Cash flows from financing activities:
Capital distributions to member	0	0
Loans received from and payments made on loans from other Summit Companies	(1,978)	(2,991)
Payments on long-term debt	0	0
Payments on acquisition-related liabilities	0	0
Distributions from partnership		0
Debt issuance costs	0
Other	(215)	0
Net cash used in financing activities	(2,193)	(2,991)
Impact of foreign currency on cash	747	(461)
Net (decrease) increase in cash	5,908	1,326
Cash and cash equivalents – beginning of period	26,298	18,337	18,337
Cash and cash equivalents – end of period	$ 32,206	$ 19,663	$ 26,298