Inventories - Additional Information (Detail) - CLP ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
INVENTORIES.
Inventories pledged	$ 0
Raw materials and consumables recognized as fuel expenses	$ 334,665,363	$ 536,292,557	$ 587,063,837

The amount of inventories pledged as security for liabilities. [Refer: Inventories]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 2
-IssueDate 2024-01-01
-Paragraph 36
-Subparagraph h
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=2&code=ifrs-tx-2024-en-r&anchor=para_36_h&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_InventoriesPledgedAsSecurityForLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant