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FINANCING ARRANGEMENTS - Summary of Financing Arrangements (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Current portion of long-term debt | $ 17,535 | $ 17,535
Long-term debt, at par | 2,538,323 | 2,547,091
Unamortized debt issuance costs and discount, net | (27,360) | (30,067)
Long-term debt, at carrying value | 2,510,963 | 2,517,024
Secured debt | Secured senior term loans |  |
Debt Instrument [Line Items] |  |
Current portion of long-term debt | 17,535 | 17,535
Secured debt | Secured senior term loans due June 30, 2024 ("2024 Term Loans") |  |
Debt Instrument [Line Items] |  |
Long-term debt, at par | 708,323 | 712,091
Secured debt | Secured senior term loans due October 8, 2028 ("2028 Term Loans") |  |
Debt Instrument [Line Items] |  |
Long-term debt, at par | 985,000 | 990,000
Unsecured debt | Unsecured senior notes, at 4.875%, due July 15, 2027 ("2027 Notes") |  |
Debt Instrument [Line Items] |  |
Long-term debt, at par | $ 545,000 | $ 545,000
Interest rate (as a percentage) | 4.875% | 4.875%
Unsecured debt | Unsecured senior notes, at 5.125%, due July 15, 2029 ("2029 Notes") |  |
Debt Instrument [Line Items] |  |
Long-term debt, at par | $ 300,000 | $ 300,000
Interest rate (as a percentage) | 5.125% | 5.125%

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