LONG-TERM DEBT - Summary of Long-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Less: current portion	$ (24)	$ 0
Long-Term Debt	1,393	22
Other Long-Term Debt
Debt Instrument [Line Items]
Long-term debt	18	22
Term Loan F Due 2027 \| Secured Debt
Debt Instrument [Line Items]
Long-term debt	516	0
Unamortized debt issuance costs	4
Term Loan B Due 2028 \| Secured Debt
Debt Instrument [Line Items]
Long-term debt	$ 441	0
Debt Instrument, interest rate, stated percentage	4.50%
Unamortized debt issuance costs	$ 5
Unamortized original issue discount	5
Seven Percent Senior Notes Due 2029 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 442	$ 0
Debt Instrument, interest rate, stated percentage	7.00%
Unamortized debt issuance costs	$ 8

Amount of short-term and long-term debt and lease obligation.

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