STOCK-BASED COMPENSATION - Narrative (Details) $ / shares in Units, $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($) plan installment $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award
Number of active stock-based compensation plans \| plan	3
Shares available for grant (shares)	33,800,000
Term of share-based compensation plan	10 years
Unrecognized compensation cost related to all equity awards \| $	$ 162.8
Weighted-average period of recognition	2 years 6 months
Cash received per share in transaction (USD per share) \| $ / shares	$ 3.00
Number of stock options granted during period (shares)	0
Number of common stock required to settle (shares)	300,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Number of annual vesting installments \| installment	4
Vesting period	4 years
Minimum \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period	3 years
Minimum \| Market-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period	2 years
Maximum \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period	4 years
Maximum \| Market-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period	4 years

Cash Received per Share in Transaction

No definition available.

Name:	mtch_CashReceivedPerShareInTransaction
Namespace Prefix:	mtch_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of Common Shares Required to Settle

+ References

No definition available.

+ Details

Name:	mtch_NumberOfCommonSharesRequiredToSettle
Namespace Prefix:	mtch_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of active equity-based compensation plans pursuant to which incentive awards are granted to employees, officers, directors and consultants.

+ References

No definition available.

+ Details

Name:	mtch_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfActivePlans
Namespace Prefix:	mtch_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Award Vesting Rights, Number of Annual Vesting Installments

+ References

No definition available.

+ Details

Name:	mtch_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsNumberofAnnualVestingInstallments
Namespace Prefix:	mtch_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	mtch_TermOfShareBasedCompensationPlan
Namespace Prefix:	mtch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=mtch_MarketBasedAwardsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: