EARNINGS PER SHARE - Summary (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
	Jan. 01, 2021	Mar. 31, 2021	Mar. 31, 2020
Numerator: Basic
Net earnings from continuing operations	$ 157,534	$ 173,848	$ 157,534
Net loss (earnings) attributable to noncontrolling interests		402	(30,769)
Net earnings from continuing operations attributable to Match Group, Inc. shareholders		174,250	126,765
Loss from discontinued operations, net of tax		0	(331,967)
Net loss attributable to noncontrolling interests of discontinued operations		0	2,372
Net loss from discontinued operations attributable to shareholders		0	(329,595)
Net earnings (loss) attributable to Match Group, Inc. shareholders		174,250	(202,830)
Numerator: Diluted
Net earnings from continuing operations	$ 157,534	173,848	157,534
Net loss (earnings) attributable to noncontrolling interests		402	(30,769)
Impact from subsidiaries’ dilutive securities of continuing operations		(467)	(5,480)
Interest on dilutive Exchangeable Senior Notes, net of income tax		4,075	4,070
Net earnings from continuing operations attributable to Match Group, Inc. shareholders		177,858	125,355
Loss from discontinued operations, net of tax		0	(331,967)
Net loss attributable to noncontrolling interests of discontinued operations		0	2,372
Net loss from discontinued operations attributable to shareholders		0	(329,595)
Net earnings (loss) attributable to Match Group, Inc. shareholders		$ 177,858	$ (204,240)
Denominator: Basic
Basic weighted average common shares outstanding (shares)		268,649	183,117
Denominator: Diluted
Basic weighted average common shares outstanding (shares)		268,649	183,117
Dilutive securities (shares)		16,774	5,842
Dilutive shares from Exchangeable Senior Notes, if-converted (in shares)		25,162	15,699
Dilutive weighted average common shares outstanding (shares)	204,658	310,585	204,658
Earnings per share:
Earnings per share from continuing operations - basic (USD per share)	$ 0.69	$ 0.65	$ 0.69
Earnings per share from continuing operations - diluted (USD per share)	$ 0.61	0.57	0.61
Loss per share from discontinued operations, net of tax - basic (USD per share)		0	(1.80)
Loss per share from discontinued operations, net of tax - diluted (USD per share)		0	(1.61)
Earnings per share attributable to Match Group, Inc. shareholders - basic (USD per share)		0.65	(1.11)
Earnings per share attributable to Match Group, Inc. shareholders - diluted (USD per share)		$ 0.57	$ (1.00)
Stock Options 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	15,700
Market-Based Awards, PSOs, 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)		500	200