Subsequent Event - Additional Information (Detail) - Subsequent Event - Lehigh West Region $ in Billions	Oct. 01, 2021 USD ($) State Quarry Plant
Subsequent Event [Line Items]
Business combination, effective date	Oct. 01, 2021
Cash transferred in business combination \| $	$ 2.3
Business combination, number of active aggregate quarries acquired \| Quarry	17
Business combination, number of cement plants acquired \| Plant	2
Business combination, number of states targeted for downstream operations \| State	4
Business acquisition, percentage of voting interests acquired	100.00%

Business combination, number of active aggregate quarries acquired.

No definition available.

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- Definition

Business combination, number of cement plants acquired.

+ References

No definition available.

+ Details

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- Definition

Business combination, number of states targeted for downstream operations.

+ References

No definition available.

+ Details

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- Definition

Date when the business acquisition agreement was executed, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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