XML 147 R132.htm IDEA: XBRL DOCUMENT
v3.21.1

Leases - Summary Of Amounts Of Lease Liabilities And The Movements (Detail) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of maturity analysis of operating lease payments [abstract] |  |
At the beginning of the fiscal year | $ 1,248,339 | $ 816,166
Additions | 380,862 | 674,781
Accretion of interest (see note 38) | 180,785 | 166,048
Difference in foreign currency | 292,007 | 370,981
Payments | (561,773) | (312,356)
Monetary effects | (364,693) | (467,281)
At the end of the fiscal year | $ 1,175,527 | $ 1,248,339

X
- Definition Additions to lease liabilities. + References No definition available. + Details
Name: | bma_AdditionsToLeaseLiabilities
Namespace Prefix: | bma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Foreign currency lease liabilities. + References No definition available. + Details
Name: | bma_ForeignCurrencyLeaseLiabilities
Namespace Prefix: | bma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interest accrued on lease liabilities. + References No definition available. + Details
Name: | bma_InterestAccruedOnLeaseLiabilities
Namespace Prefix: | bma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Monetary effects lease liabilities. + References No definition available. + Details
Name: | bma_MonetaryEffectsLeaseLiabilities
Namespace Prefix: | bma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow for payment of lease liabilities, classified as financing activities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 17 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_17_e&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration