XML 203 R188.htm IDEA: XBRL DOCUMENT v3.21.1

Tax and Other Claims - Additional Information (Detail)	Feb. 01, 2021
Tax And Other Claims [Line Items]
Percentage of reimbursement amount of the difference between premium collected for life insurance over the debt balance of insurance contracts liability asset	75.00%

X

- Definition

Percentage of increase decrease through experience adjustments insurance contracts liability asset.

+ References

No definition available.

+ Details

Name:	bma_PercentageOfIncreaseDecreaseThroughExperienceAdjustmentsInsuranceContractsLiabilityAsset
Namespace Prefix:	bma_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tax And Other Claims.

+ References

No definition available.

+ Details

Name:	bma_TaxAndOtherClaimsLineItems
Namespace Prefix:	bma_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration