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DERIVATIVE INSTRUMENTS - Fair Value of Derivative Instruments By Balance Sheet Location (Details) SFr in Millions	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 21, 2020 USD ($)	Dec. 21, 2020 CHF (SFr)
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Assets	$ 41,433,000	$ 12,920,000
Total derivatives designated as hedges — Liabilities	73,652,000	136,165,000
Cash Flow Hedges | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Current notional amount		1,875,000,000
Interest rate swap | Cash Flow Hedges | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Current notional amount	1,900,000,000	1,900,000,000
Interest rate swap | Cash Flow Hedges | Designated as Hedging Instrument | Other assets
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Assets	14,507,000	0
Interest rate swap | Cash Flow Hedges | Designated as Hedging Instrument | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Liabilities	21,337,000	22,033,000
Interest rate swap | Cash Flow Hedges | Designated as Hedging Instrument | Other liabilities
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Liabilities	46,717,000	71,736,000
Cross-currency swap
Derivatives, Fair Value [Line Items]
Current notional amount			$ 471,600,000	SFr 420.1
Cross-currency swap | Cash Flow Hedges | Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Assets	10,083,000	7,623,000
Cross-currency swap | Cash Flow Hedges | Designated as Hedging Instrument | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Liabilities	955,000	4,335,000
Cross-currency swap | Cash Flow Hedges | Designated as Hedging Instrument | Other liabilities
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Liabilities	4,615,000	26,728,000
Cross-currency swap | Net Investment Hedges | Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Assets	5,209,000	5,297,000
Cross-currency swap | Net Investment Hedges | Designated as Hedging Instrument | Other assets
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Assets	656,000	0
Cross-currency swap | Net Investment Hedges | Designated as Hedging Instrument | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Liabilities	10,000	1,884,000
Cross-currency swap | Net Investment Hedges | Designated as Hedging Instrument | Other liabilities
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedges — Liabilities	$ 28,000	$ 9,449,000

X

- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 10
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