v2.4.1.9

COMMITMENTS AND CONTINGENCIES (Details 2) (Moelis Australia Holdings)	3 Months Ended
	Mar. 31, 2015
Moelis Australia Holdings
Joint venture put and call options
Percentage of purchase price to be paid immediately if the Parent is public and the put option is exercised	50.00%mc_EquityMethodInvestmentsPercentageOfPurchasePriceToBePaidImmediatelyIfParentIsPublicAndPutOptionIsExercised / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mc_MoelisAustraliaHoldingsPTYLimitedMember
Period within which the remaining balance is to be paid if the parent is public and the put option is exercised	18 months

X

- Definition

Represents the percentage of purchase price to be paid immediately if the parent is public and the put option is exercised.

+ References

No definition available.

+ Details

Name:	mc_EquityMethodInvestmentsPercentageOfPurchasePriceToBePaidImmediatelyIfParentIsPublicAndPutOptionIsExercised
Namespace Prefix:	mc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the period within which the remaining balance is to be paid if the parent is public and the put option is exercised.

+ References

No definition available.

+ Details

Name:	mc_EquityMethodInvestmentsPeriodWithinWhichRemainingBalanceIsToBePaidIfParentIsPublicAndPutOptionIsExercised
Namespace Prefix:	mc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration