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Long-Term Debt (Parenthetical) (Detail)		3 Months Ended
	Jul. 19, 2021	Jun. 30, 2021	Aug. 02, 2016
4.500% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate		4.50%	4.50%
Debt instrument, maturity year		2026
2.500% Senior Unsecured Notes Due 2031 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	2.50%
Debt instrument, maturity year	2031

X

- Definition

Debt instrument maturity year.

+ References

No definition available.

+ Details

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Namespace Prefix:	exp_
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Balance Type:	na
Period Type:	duration

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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X

- 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.

+ Details

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- Details

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- Details

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- Details

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