ACQUISITIONS, DISPOSTIONS, GOODWILL AND INTANGIBLES - Narrative (Details) $ / shares in Units, T in Millions		3 Months Ended
	Jan. 12, 2024 USD ($) T ready-mixPlant integratedCementPlant grindingFacility port inlandTerminal $ / shares shares	Mar. 31, 2024 USD ($)	Mar. 30, 2024 USD ($) business $ / shares	Mar. 30, 2024 USD ($) $ / shares	Apr. 01, 2023 USD ($)	Dec. 30, 2023 $ / shares
Business Acquisition [Line Items]
Preferred stock, par value (in usd per share) | $ / shares			$ 0.01	$ 0.01		$ 0.01
Argos USA acquisition and integration costs			$ 61,294,000		$ 0
Amortization expense			9,200,000		900,000
Proceeds from sale of businesses			75,993,000		0
Gain on sale of business			$ 14,985,000		0
East
Business Acquisition [Line Items]
Number of businesses sold | business			2
Proceeds from sale of businesses			$ 76,000,000
Gain on sale of business			15,000,000
Summit Materials, LLC
Business Acquisition [Line Items]
Argos USA acquisition and integration costs			61,294,000		0
Amortization expense			9,200,000		900,000
Proceeds from sale of businesses			75,993,000		0
Gain on sale of business			$ 14,985,000		$ 0
Summit Materials, LLC | East
Business Acquisition [Line Items]
Number of businesses sold | business			2
Proceeds from sale of businesses			$ 76,000,000
Gain on sale of business			$ 15,000,000
Argos USA
Business Acquisition [Line Items]
Purchase Price	$ 3,119,213,000
Cash consideration	$ 1,200,000,000
Preferred stock, par value (in usd per share) | $ / shares	$ 0.01
Number of integrated cement plants | integratedCementPlant	4
Number of grinding facilities | grindingFacility	2
Number of ready-mix concrete plants | ready-mixPlant	140
Number of ports | port	8
Number of inland | inlandTerminal	10
Cement grinding capacity per annum | T	9.6
import capacity of cement per annum | T	5.4
Revenue of acquiree since acquisition date, actual		$ 352,400,000
Earnings or loss of acquiree since acquisition date, actual		$ 18,900,000
Percentage of voting interests acquired	25.01%
Intangible assets, net	$ 100,000,000
Argos USA | Customer-Related Intangible Assets
Business Acquisition [Line Items]
Intangible assets, net	$ 85,000,000
Weighted average useful life	3 years
Argos USA | Contractual Intangible Assets
Business Acquisition [Line Items]
Intangible assets, net	$ 15,000,000
Weighted average useful life	8 years
Argos USA | Intellectual Property Licenses
Business Acquisition [Line Items]
Intangible assets, net	$ 21,400,000
Argos USA | Preferred Stock
Business Acquisition [Line Items]
Business acquisition number of shares (in shares) | shares	1
Argos USA | Common Class A
Business Acquisition [Line Items]
Business acquisition number of shares (in shares) | shares	54,720,000
Share price (in usd per share) | $ / shares	$ 36.07
Argos USA | Summit Materials, LLC
Business Acquisition [Line Items]
Purchase Price	$ 3,119,213,000
Cash consideration	$ 1,200,000,000
Preferred stock, par value (in usd per share) | $ / shares	$ 0.01
Number of integrated cement plants | integratedCementPlant	4
Number of grinding facilities | grindingFacility	2
Number of ready-mix concrete plants | ready-mixPlant	140
Number of ports | port	8
Number of inland | inlandTerminal	10
Cement grinding capacity per annum | T	9.6
import capacity of cement per annum | T	5.4
Revenue of acquiree since acquisition date, actual				$ 352,400,000
Earnings or loss of acquiree since acquisition date, actual				$ 18,900,000
Percentage of voting interests acquired	25.01%
Intangible assets, net	$ 100,000,000
Argos USA | Summit Materials, LLC | Customer-Related Intangible Assets
Business Acquisition [Line Items]
Intangible assets, net	$ 85,000,000
Weighted average useful life	3 years
Argos USA | Summit Materials, LLC | Contractual Intangible Assets
Business Acquisition [Line Items]
Intangible assets, net	$ 15,000,000
Weighted average useful life	8 years
Argos USA | Summit Materials, LLC | Intellectual Property Licenses
Business Acquisition [Line Items]
Intangible assets, net	$ 21,400,000
Argos USA | Summit Materials, LLC | Preferred Stock
Business Acquisition [Line Items]
Business acquisition number of shares (in shares) | shares	1
Argos USA | Summit Materials, LLC | Common Class A
Business Acquisition [Line Items]
Business acquisition number of shares (in shares) | shares	54,720,000
Share price (in usd per share) | $ / shares	$ 36.07