v3.26.1
Commitments and Contingencies - Additional Information (Detail)
3 Months Ended
Mar. 31, 2026
Commitments and Contingencies Disclosure [Abstract]
Settlement days of bond transaction
within one to two trading days
X
- Definition
Settlement period of bond transaction.
+ References
No definition available.
+ Details
Name:
mktx_SettlementPeriodOfBondTransaction
Namespace Prefix:
mktx_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration