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v3.21.1

Accounts and transactions with related parties (Details 3) - CLP ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Directors [Member] |  |  |
Statement [Line Items] |  |  |
Audit's Committee | $ 63,120 | $ 47,386 | $ 29,185
Directors Committee | 64,837 | 47,154 | 35,179
Attendance meetings fee | 1,380,976 | 1,266,892 | 952,490
Dividend Participation | 2,097,276 | 6,038,934 | 2,270,840
Chief Executive [Member] |  |  |
Statement [Line Items] |  |  |
Directors Committee | 16,655 | 13,650 | 16,457
Attendance meetings fee | 199,798 | 190,080 | 178,913
Dividend Participation | $ 27,773 | $ 18,541 | $ 22,144

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- Definition Audits committee expense + References No definition available. + Details
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Namespace Prefix: | ccu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Directors committee + References No definition available. + Details
Name: | ccu_DirectorsCommittee
Namespace Prefix: | ccu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Dividend participation + References No definition available. + Details
Name: | ccu_DividendParticipation
Namespace Prefix: | ccu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Expenses for monthly attendance fee to director + References No definition available. + Details
Name: | ccu_ExpensesForMonthlyAttendanceFeeToDirector
Namespace Prefix: | ccu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | ccu_StatementLineItems
Namespace Prefix: | ccu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ccu_DirectorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=ccu_ChiefExecutiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |