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DERIVATIVE INSTRUMENTS (Fair Value of Derivative Instruments By Balance Sheet Location) (Details) € in Millions, £ in Millions, SFr in Millions | Dec. 31, 2021 USD ($) | Oct. 04, 2021 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2021 EUR (€) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 GBP (£) | Dec. 21, 2020 USD ($) | Dec. 21, 2020 CHF (SFr) | Oct. 02, 2020 USD ($)
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Cross-currency swap |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Aggregate Notional Amount |  |  |  |  |  |  | $ 471,600,000 | SFr 420.1 |
Cross-currency swap | Net Investment Hedges |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Aggregate Notional Amount |  |  | $ 52,000,000 | € 44.9 |  |  |  |  |
Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Assets | $ 16,497,000 |  |  |  | $ 12,920,000 |  |  |  |
Total derivatives designated as hedges — Liabilities | 64,838,000 |  |  |  | 136,165,000 |  |  |  |
Designated as Hedging Instrument | Cash Flow Hedges |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Aggregate Notional Amount | 1,775,000,000 |  |  |  | 1,875,000,000 |  |  |  |
Designated as Hedging Instrument | Interest rate swap | Cash Flow Hedges |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Aggregate Notional Amount | 1,800,000,000 |  |  |  | 1,900,000,000 |  |  |  |
Designated as Hedging Instrument | Interest rate swap | Cash Flow Hedges | Other assets |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Assets | 4,373,000 |  |  |  | 0 |  |  |  |
Designated as Hedging Instrument | Interest rate swap | Cash Flow Hedges | Accrued expenses and other current liabilities |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Liabilities | 18,187,000 |  |  |  | 22,033,000 |  |  |  |
Designated as Hedging Instrument | Interest rate swap | Cash Flow Hedges | Other liabilities |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Liabilities | 30,143,000 |  |  |  | 71,736,000 |  |  |  |
Designated as Hedging Instrument | Cross-currency swap | Cash Flow Hedges |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Aggregate Notional Amount |  | $ 50,000,000 |  |  |  |  |  |  | $ 33,300,000
Designated as Hedging Instrument | Cross-currency swap | Cash Flow Hedges | Prepaid expenses and other current assets |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Assets | 4,900,000 |  |  |  | 7,623,000 |  |  |  |
Designated as Hedging Instrument | Cross-currency swap | Cash Flow Hedges | Accrued expenses and other current liabilities |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Liabilities | 8,283,000 |  |  |  | 4,335,000 |  |  |  |
Designated as Hedging Instrument | Cross-currency swap | Cash Flow Hedges | Other liabilities |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Liabilities | 4,859,000 |  |  |  | 26,728,000 |  |  |  |
Designated as Hedging Instrument | Cross-currency swap | Net Investment Hedges |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Aggregate Notional Amount |  |  |  |  | 167,500,000 | £ 128.3 |  |  |
Designated as Hedging Instrument | Cross-currency swap | Net Investment Hedges | Prepaid expenses and other current assets |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Assets | 5,120,000 |  |  |  | 5,297,000 |  |  |  |
Designated as Hedging Instrument | Cross-currency swap | Net Investment Hedges | Other assets |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Assets | 2,104,000 |  |  |  | 0 |  |  |  |
Designated as Hedging Instrument | Cross-currency swap | Net Investment Hedges | Accrued expenses and other current liabilities |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Liabilities | 0 |  |  |  | 1,884,000 |  |  |  |
Designated as Hedging Instrument | Cross-currency swap | Net Investment Hedges | Other liabilities |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Total derivatives designated as hedges — Liabilities | $ 3,366,000 |  |  |  | $ 9,449,000 |  |  |  |

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