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Debt Instrument, Period of Reported Sale Price of Common Stock

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Face (par) amount of debt instrument at time of issuance.

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Incremental percentage increase (decrease) in the stated rate on a debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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LONG-TERM DEBT, NET - Narrative (Details)		9 Months Ended
LONG-TERM DEBT, NET - Narrative (Details)	Feb. 13, 2020 USD ($)	Sep. 30, 2020 USD ($) trading_day $ / shares	Jun. 11, 2020 USD ($)	Feb. 12, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity on Credit Facility	$ 750,000,000			$ 500,000,000
Increase (decrease) in interest rate (as a percent)	(0.125%)
Remaining borrowing capacity under the Credit Facility		$ 749,800,000
Cash received per share in transaction (USD per share) \| $ / shares		$ 3.00
Call discount (premium)		$ 324,551,000			$ 357,887,000
Debt issuance costs		46,857,000			44,987,000
Letter of Credit
Debt Instrument [Line Items]
Outstanding borrowings under the Credit Facility		$ 200,000
New Match Common Stock
Debt Instrument [Line Items]
Cash received per share in transaction (USD per share) \| $ / shares		$ 3.00
Senior Notes
Debt Instrument [Line Items]
Threshold trading days \| trading_day		20
Threshold consecutive trading days \| trading_day		30
Exchange price on applicable trading day (as a percent)		130.00%
Period of trading days of reported sale price of common stock		5 days
Period of consecutive trading days of reported sale price of common stock		5 days
Proportion of product of last reported price (as a percent)		98.00%
Senior Notes \| Maximum
Debt Instrument [Line Items]
Maximum leverage ratio		5.0
Senior Notes \| 4.125% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)		4.125%
Senior Notes \| 5.625% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)		5.625%
Senior Notes \| 5.00% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)		5.00%
Senior Notes \| 6.375% Senior Notes
Debt Instrument [Line Items]
Stated interest rate (as a percent)		6.375%
Call discount (premium)			$ (12,800,000)
Debt issuance costs			$ 2,900,000
Senior Notes \| Exchangeable Notes \| Match Group FinanceCo 2, Inc. & Match Group FinanceCo 3, Inc.
Debt Instrument [Line Items]
Threshold trading days \| trading_day		20
Threshold consecutive trading days \| trading_day		30
Exchange price on applicable trading day (as a percent)		130.00%
Redemption price (as a percent)		100.00%
Senior Notes \| 2022 Exchangeable Notes
Debt Instrument [Line Items]
Debt outstanding		$ 487,296,000			476,732,000
Effective interest rate (as a percent)		4.73%
Stated interest rate (as a percent)		0.875%
Call discount (premium)		$ 30,204,000			40,768,000
Principal amount of long-term debt						$ 517,500,000
Senior Notes \| 2026 Exchangeable Notes
Debt Instrument [Line Items]
Debt outstanding		$ 458,793,000			445,963,000
Effective interest rate (as a percent)		5.35%
Stated interest rate (as a percent)		0.875%
Call discount (premium)		$ 116,207,000			129,037,000
Principal amount of long-term debt					575,000,000.0
Senior Notes \| 2030 Exchangeable Notes
Debt Instrument [Line Items]
Debt outstanding		$ 403,088,000			393,200,000
Effective interest rate (as a percent)		6.59%
Stated interest rate (as a percent)		2.00%
Call discount (premium)		$ 171,912,000			181,800,000
Principal amount of long-term debt					575,000,000.0
Term Loan \| Term Loan
Debt Instrument [Line Items]
Debt outstanding		$ 425,000,000			$ 425,000,000
Effective interest rate (as a percent)		2.00%			4.44%
Term Loan \| Term Loan \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.75%
Credit Facility \| Credit Facility due December 7, 2023
Debt Instrument [Line Items]
Outstanding borrowings under the Credit Facility					$ 0
Annual commitment fee (as a percent)		0.30%
Maximum leverage ratio		4.0
Credit Facility \| Credit Facility due December 7, 2023 \| Minimum
Debt Instrument [Line Items]
Maximum leverage ratio		2.0
Credit Facility \| Credit Facility due December 7, 2023 \| Maximum
Debt Instrument [Line Items]
Maximum leverage ratio		5.0