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Business Segments - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2023 Plant Facility Location Terminal Sector Segment
Segment Reporting [Abstract]
Number of sectors | Sector	2
Number of reportable business segments | Segment	4
Cement plant locations | Location	8
Slag grinding facility | Facility	1
Cement distribution terminals | Terminal	30
Gypsum wallboard plants	5
Readymix concrete batch plants	30
Aggregates processing plants	5
Proportionate consolidation of share of joint venture revenues and operating earnings	50.00%

X

- Definition

Aggregates processing plants.

+ References

No definition available.

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- Definition

Cement distribution terminals.

+ References

No definition available.

+ Details

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- Definition

Cement plant locations.

+ References

No definition available.

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- Definition

Gypsum wallboard plants.

+ References

No definition available.

+ Details

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- Definition

Number of sectors.

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No definition available.

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- Definition

Readymix plants.

+ References

No definition available.

+ Details

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- Definition

Segment reporting information proportionate consolidation of joint ventures revenues and operating earnings.

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No definition available.

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- Definition

Slag grinding facility.

+ References

No definition available.

+ Details

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X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599

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