XML 202 R188.htm IDEA: XBRL DOCUMENT v3.22.1

Earnings Per Share Dividends - Additional Information (Detail) - ARS ($) $ / shares in Units, $ in Thousands				1 Months Ended	12 Months Ended
	Dec. 16, 2021	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2020	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Earnings per share [line items]
Cash dividend paid								$ 6,393,978
Basic earnings (loss) per share					$ 35.7711	$ 61.7407		$ 66.5828
Cash dividends		$ 10,000,426	$ 12,788,268		$ 12,839,897	$ 30,158,801	[1]	$ 17,480,360
Percentage on distribution of earnings	20.00%				20.00%
Distribution of earnings in instalments	12 months				12 months
Unappropriated Retained Earnings [member]
Earnings per share [line items]
Basic earnings (loss) per share		$ 15.64	$ 20
Top of range [member]
Earnings per share [line items]
Aggregate dividend distribution					$ 3,791,722
Dividend Distribution [member]
Earnings per share [line items]
Basic earnings (loss) per share			$ 22.18					$ 10
Cash dividends				$ 14,187,873
[1] Includes a supplementary cash dividend approved by the Shareholders’ Meeting dated on October 21, 2020. See also notes 42 and 51.

X

- Definition

Aggregate dividend distribution.

+ References

No definition available.

+ Details

Name:	bma_AggregateDividendDistribution
Namespace Prefix:	bma_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Distribution of earnings in instalments.

+ References

No definition available.

+ Details

Name:	bma_DistributionOfEarningsInInstalments
Namespace Prefix:	bma_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Dividend paid.

+ References

No definition available.

+ Details

Name:	bma_DividendPaid
Namespace Prefix:	bma_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage on distribution of earnings.

+ References

No definition available.

+ Details

Name:	bma_PercentageOnDistributionOfEarnings
Namespace Prefix:	bma_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2021-01-01
-Paragraph 66
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_66&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2021-01-01
-Paragraph 67
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2021-en-r&anchor=para_67&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_BasicEarningsLossPerShare
Namespace Prefix:	ifrs-full_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of dividends recognised as distributions to owners.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 107
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_107&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_DividendsPaid
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_EarningsPerShareLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=bma_UnappropriatedRetainedEarningsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=bma_DividendDistributionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: