RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Thousands, shares in Millions	1 Months Ended	12 Months Ended
Jul. 31, 2020	Dec. 31, 2020
Related Party Transaction
Stock issued during period, new issues (shares)	17.3
Issuance of common stock	$ 1,400,000	$ 0
Leasing Arrangements \| IAC
Related Party Transaction
Proceeds from contributions from affiliates		100
Payments of distributions to affiliates		1,100
Pass-through Transactions \| IAC
Related Party Transaction
Due to affiliate		3,400
Separation Agreement \| IAC \| Common Stock
Related Party Transaction
Stock issued during period, new issues (shares)	17.3
Issuance of common stock	$ 1,400,000
Tax Sharing Agreement \| IAC
Related Party Transaction
Proceeds from contributions from affiliates		4,300
Payments of distributions to affiliates		20,900
Due to related parties		1,600
Tax Sharing Agreement \| IAC \| Other Current Assets
Related Party Transaction
Due from affiliates		1,900
Tax Sharing Agreement \| IAC \| Other Noncurrent Assets
Related Party Transaction
Due from affiliates		600
Transition Services Agreement \| IAC
Related Party Transaction
Proceeds from contributions from affiliates		2,400
Payments of distributions to affiliates		300
Equity Award Transactions \| IAC
Related Party Transaction
Payments of distributions to affiliates		2,000
Due to affiliate		1,600
Health and Welfare and 401(k) Plans \| IAC
Related Party Transaction
Payments of distributions to affiliates		$ 18,300

For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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