EARNINGS PER SHARE - Summary (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator: Basic
Net earnings from continuing operations	$ 140,020	$ 141,397	$ 313,868	$ 298,931
Net loss (earnings) attributable to noncontrolling interests	366	(29,816)	768	(60,585)
Net earnings from continuing operations attributable to Match Group, Inc. shareholders	140,386	111,581	314,636	238,346
Earnings (loss) from discontinued operations, net of tax	509	(34,611)	509	(366,578)
Net earnings (loss) attributable to noncontrolling interest of discontinued operations	0	(2,053)	0	319
Net earnings (loss) from discontinued operations attributable to shareholders	509	(36,664)	509	(366,259)
Net earnings (loss) attributable to Match Group, Inc. shareholders	140,895	74,917	315,145	(127,913)
Numerator: Diluted
Net earnings from continuing operations	140,020	141,397	313,868	298,931
Net loss (earnings) attributable to noncontrolling interests	366	(29,816)	768	(60,585)
Impact from subsidiaries’ dilutive securities of continuing operations	(388)	(3,947)	(428)	(9,427)
Interest on dilutive Exchangeable Senior Notes, net of income tax	4,075	4,070	8,150	8,139
Net earnings from continuing operations attributable to Match Group, Inc. shareholders	144,073	111,704	322,358	237,058
Earnings (loss) from discontinued operations, net of tax	509	(34,611)	509	(366,578)
Net earnings (loss) attributable to noncontrolling interest of discontinued operations	0	(2,053)	0	319
Impact from subsidiaries’ dilutive securities of discontinued operations	0	(356)	0	(240)
Net earnings (loss) from discontinued operations attributable to shareholders	509	(37,020)	509	(366,499)
Net earnings (loss) attributable to Match Group, Inc. shareholders	$ 144,582	$ 74,684	$ 322,867	$ (129,441)
Denominator: Basic
Basic weighted average common shares outstanding (shares)	271,254	183,477	269,959	183,297
Denominator: Diluted
Basic weighted average common shares outstanding (shares)	271,254	183,477	269,959	183,297
Dilutive securities (shares)	14,671	8,664	15,735	7,146
Dilutive shares from Exchangeable Senior Notes, if-converted (shares)	25,162	15,699	25,162	15,699
Dilutive weighted average common shares outstanding (shares)	311,087	207,840	310,856	206,142
Earnings per share:
Earnings per share from continuing operations - basic (USD per share)	$ 0.52	$ 0.61	$ 1.17	$ 1.30
Earnings per share from continuing operations - diluted (USD per share)	0.46	0.54	1.04	1.15
Earnings (loss) per share from discontinued operations, net of tax - basic (USD per share)	0.00	(0.20)	0.00	(2.00)
Earnings (loss) per share from discontinued operations, net of tax - diluted (USD per share)	0.00	(0.18)	0.00	(1.78)
Earnings per share attributable to Match Group, Inc. shareholders - basic (USD per share)	0.52	0.41	1.17	(0.70)
Earnings per share attributable to Match Group, Inc. shareholders - diluted (USD per share)	$ 0.46	$ 0.36	$ 1.04	$ (0.63)
Stock Options, Warrants and RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from the calculation of diluted earnings per share (shares)	700	8,400	700	8,400
Market-Based Awards and PSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities excluded from the calculation of diluted earnings per share (shares)	1,000	200	1,000	200