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Inventories (Details Textual) - CLP ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of Inventories [Abstract]
Cost of inventories recognised as expense during period	$ 1,877,113	$ 1,962,689	$ 3,296,095

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- References

No definition available.

+ Details

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Namespace Prefix:	ccu_
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Period Type:	duration

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- Definition

The amount of inventories recognised as an expense during the period. [Refer: Inventories]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 2
-IssueDate 2020-01-01
-Paragraph 36
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=2&code=ifrs-tx-2020-en-r&anchor=para_36_d&doctype=Standard
-URIDate 2020-01-01

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Balance Type:	debit
Period Type:	duration