Amount of fee for an early repayment of debt.

No definition available.

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- Definition

Debt instrument redemption charge. May include prepayment premium and write-off of deferred financing fees.

+ References

No definition available.

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- Definition

Net benefit from write off original issuance premium and discount.

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No definition available.

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- Definition

Percentage of par value on senior notes.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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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

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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

+ 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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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Debt - Senior Notes - Additional Information (Details) - USD ($) $ in Thousands					1 Months Ended	12 Months Ended
	Jun. 01, 2017	Mar. 08, 2016	Aug. 13, 2015	Jul. 17, 2015	Aug. 13, 2015	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016	Nov. 28, 2015	Aug. 22, 2015	Apr. 25, 2015
Davenport Assets
Debt
Purchase price			$ 80,000	$ 370,000	$ 450,000
8 1/2% Senior Notes, due 2022
Debt
Senior notes, interest rate (as a percent)						8.50%
6 1/8% Senior Notes, due 2023
Debt
Senior notes, interest rate (as a percent)						6.125%	6.125%
5 1/8% Senior Notes, due 2025
Debt
Senior notes, interest rate (as a percent)						5.125%
10 1/2% Senior Notes, due 2020
Debt
Senior notes, interest rate (as a percent)								10.50%
Senior notes, aggregate principal amount redeemed									$ 153,800	$ 183,000	$ 288,200
Charges on redemption							$ 56,500
Prepayment premium							66,600
Write off of deferred financing fees							11,900
Net benefit from the write-off the original issuance premium and discount							$ 22,000
Issuers \| 8 1/2% Senior Notes, due 2022
Debt
Debt instrument, face amount		$ 250,000
Senior notes, interest rate (as a percent)		8.50%
Percentage of par value of senior notes		100.00%
Proceeds net of related fees and expenses		$ 246,300
Issuers \| 6 1/8% Senior Notes, due 2023
Debt
Debt instrument, face amount								$ 650,000
Senior notes, interest rate (as a percent)								6.125%
Issuers \| 6 1/8% Senior Notes, due 2023, issued at par
Debt
Debt instrument, face amount								$ 350,000
Issuers \| 6 1/8% Senior Notes, due 2023, , issued at 99.375% of par
Debt
Debt instrument, face amount								$ 300,000
Percentage of par value of senior notes								99.375%
Issuers \| 5 1/8% Senior Notes, due 2025
Debt
Debt instrument, face amount	$ 300,000
Senior notes, interest rate (as a percent)	5.125%
Percentage of par value of senior notes	100.00%
Proceeds net of related fees and expenses	$ 295,400
Summit Materials, LLC
Debt
Write off of deferred financing fees						$ 1,683
Summit Materials, LLC \| Davenport Assets
Debt
Purchase price			$ 450,000	$ 370,000
Summit Materials, LLC \| 8 1/2% Senior Notes, due 2022
Debt
Senior notes, interest rate (as a percent)						8.50%	8.50%
Summit Materials, LLC \| 6 1/8% Senior Notes, due 2023
Debt
Senior notes, interest rate (as a percent)						6.125%	6.125%
Summit Materials, LLC \| 5 1/8% Senior Notes, due 2025
Debt
Senior notes, interest rate (as a percent)						5.125%