EARNINGS PER SHARE - Summary (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator: Basic
Net earnings from continuing operations	$ 130,901	$ 140,113	$ 444,769	$ 439,044
Net loss (earnings) attributable to noncontrolling interests	309	586	1,077	(59,999)
Net earnings from continuing operations attributable to Match Group, Inc. shareholders	131,210	140,699	445,846	379,045
Earnings (loss) from discontinued operations, net of tax	0	508	509	(366,070)
Net earnings (loss) attributable to noncontrolling interest of discontinued operations			0	319
Net earnings (loss) from discontinued operations attributable to shareholders	0	508	509	(365,751)
Net earnings attributable to Match Group, Inc. shareholders	131,210	141,207	446,355	13,294
Numerator: Diluted
Net earnings from continuing operations	130,901	140,113	444,769	439,044
Net loss (earnings) attributable to noncontrolling interests	309	586	1,077	(59,999)
Impact from subsidiaries’ dilutive securities from continuing operations	(51)	(395)	(907)	(9,823)
Interest on dilutive Exchangeable Notes, net of income tax	4,075	4,070	12,225	12,209
Net earnings from continuing operations attributable to Match Group, Inc. shareholders	135,234	144,374	457,164	381,431
Earnings (loss) from discontinued operations, net of tax	0	508	509	(366,070)
Net earnings (loss) attributable to noncontrolling interest of discontinued operations			0	319
Impact from subsidiaries’ dilutive securities from discontinued operations			0	(240)
Net earnings (loss) from discontinued operations attributable to shareholders	0	508	509	(365,991)
Net earnings attributable to Match Group, Inc. shareholders	$ 135,234	$ 144,882	$ 457,673	$ 15,440
Denominator: Basic
Basic weighted average common shares outstanding (shares)	276,955	260,744	272,316	209,113
Denominator: Diluted
Basic weighted average common shares outstanding (shares)	276,955	260,744	272,316	209,113
Dilutive securities (shares)	14,834	19,790	15,439	11,432
Dilutive shares from Exchangeable Senior Notes, if-converted (shares)	25,162	25,162	25,162	18,853
Dilutive weighted average common shares outstanding (shares)	316,951	305,696	312,917	239,398
Earnings per share:
Earnings per share from continuing operations - basic (USD per share)	$ 0.47	$ 0.54	$ 1.64	$ 1.81
Earnings per share from continuing operations - diluted (USD per share)	0.43	0.47	1.46	1.59
Earnings (loss) per share from discontinued operations, net of tax - basic (USD per share)	0	0.00	0.00	(1.75)
Earnings (loss) per share from discontinued operations, net of tax - diluted (USD per share)	0	0.00	0.00	(1.53)
Earnings (loss) per share attributable to Match Group, Inc. shareholders - basic (USD per share)	0.47	0.54	1.64	0.06
Earnings (loss) per share attributable to Match Group, Inc. shareholders - diluted (USD per share)	$ 0.43	$ 0.47	$ 1.46	$ 0.06
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)	1,300	13,400	1,300	13,400
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)	600	300	600	300