XML 53 R45.htm IDEA: XBRL DOCUMENT
v3.23.4

Schedule of Inventories (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Mar. 31, 2023
--- | --- | ---
Inventory [Line Items] |  |
Inventories | $ 333,828 | $ 291,882
Raw Materials and Material-in-Progress [Member] |  |
Inventory [Line Items] |  |
Inventories | 104,465 | 96,880
Finished Cement [Member] |  |
Inventory [Line Items] |  |
Inventories | 55,480 | 46,364
Aggregates [Member] |  |
Inventory [Line Items] |  |
Inventories | 10,580 | 8,309
Gypsum Wallboard [Member] |  |
Inventory [Line Items] |  |
Inventories | 7,183 | 4,244
Recycled Paperboard [Member] |  |
Inventory [Line Items] |  |
Inventories | 13,471 | 8,651
Repair Parts and Supplies [Member] |  |
Inventory [Line Items] |  |
Inventories | 123,555 | 112,885
Fuel and Coal [Member] |  |
Inventory [Line Items] |  |
Inventories | $ 19,094 | $ 14,549

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
Name: | us-gaap_InventoryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481372/852-10-55-10 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_InventoryNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=exp_RawMaterialsAndMaterialInProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=exp_FinishedCementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=exp_AggregatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=exp_GypsumWallboardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=exp_RecycledPaperboardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=exp_RepairPartsAndSuppliesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=exp_FuelAndCoalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |