Percentage of par value on senior notes.

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- Definition

Redemption Charges

+ References

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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- Definition

The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share.

+ References

No definition available.

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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DEBT - Senior Notes (Details) - USD ($)				3 Months Ended	9 Months Ended
DEBT - Senior Notes (Details) - USD ($)	Sep. 27, 2021	Aug. 11, 2020	Mar. 15, 2019	Oct. 02, 2021	Oct. 02, 2021	Sep. 26, 2020	Jan. 02, 2021
Debt Instrument [Line Items]
Write off of deferred financing fees					$ 2,116,000	$ 3,338,000
Long-term debt				$ 1,610,830,000	1,610,830,000		$ 1,915,425,000
Proceeds from debt issuances					$ 0	700,000,000
5 1/8% Senior Notes, due 2025
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)				5.125%	5.125%
Issuers \| 5 1/8% Senior Notes, due 2025
Debt Instrument [Line Items]
Debt redeemed	$ 300,000,000
Senior notes, interest rate (as a percent)	5.125%
Redemption charges				$ 6,000,000
Redemption premium				3,900,000
Write off of deferred financing fees				2,100,000
Issuers \| 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)		5.25%
Long-term debt		$ 700,000,000
Proceeds from debt issuances		$ 690,400,000
Issuers \| 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)			6.50%
Long-term debt			$ 300,000,000
Summit Materials, LLC
Debt Instrument [Line Items]
Write off of deferred financing fees					$ 2,116,000	3,338,000
Long-term debt				$ 1,610,830,000	1,610,830,000		1,915,425,000
Proceeds from debt issuances					$ 0	$ 700,000,000
Summit Materials, LLC \| 5 1/8% Senior Notes, due 2025
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)				5.125%	5.125%
Senior Notes \| 5 1/8% Senior Notes, due 2025
Debt Instrument [Line Items]
Long-term debt				$ 0	$ 0		300,000,000
Senior Notes \| 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)				5.25%	5.25%
Long-term debt				$ 700,000,000	$ 700,000,000		700,000,000
Senior Notes \| 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)				6.50%	6.50%
Long-term debt				$ 300,000,000	$ 300,000,000		300,000,000
Senior Notes \| Issuers \| 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Percentage of par value of senior notes		100.00%
Senior Notes \| Issuers \| 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Percentage of par value of senior notes			100.00%
Proceeds net of related fees and expenses			$ 296,300,000
Senior Notes \| Summit Materials, LLC \| 5 1/8% Senior Notes, due 2025
Debt Instrument [Line Items]
Long-term debt				$ 0	$ 0		300,000,000
Senior Notes \| Summit Materials, LLC \| 5 1/4% Senior Notes Due 2029
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)				5.25%	5.25%
Long-term debt				$ 700,000,000	$ 700,000,000		700,000,000
Senior Notes \| Summit Materials, LLC \| 6 1/2% Senior Notes, due 2027
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)				6.50%	6.50%
Long-term debt				$ 300,000,000	$ 300,000,000		$ 300,000,000