Fair value of the assets less the liabilities of a derivative or group of derivatives.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
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Fixed interest rate related to the interest rate derivative.

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Nominal or face amount used to calculate payment on derivative.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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DERIVATIVE INSTRUMENTS - Schedule of Cross Currency Swap Derivatives (Details)	Mar. 31, 2021 USD ($)	Mar. 31, 2021 CHF (SFr)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 CHF (SFr)	Dec. 21, 2020 USD ($)	Dec. 21, 2020 CHF (SFr)	Oct. 02, 2017 USD ($)	Oct. 02, 2017 CHF (SFr)
Cross-currency swap
Derivative [Line Items]
Aggregate Notional Amount					$ 471,600,000	SFr 420,100,000
Codman \| Cross-currency swap \| Long
Derivative [Line Items]
Aggregate Notional Amount \| SFr								SFr 291,200,000
Codman \| Cross-currency swap \| Short
Derivative [Line Items]
Aggregate Notional Amount							$ 300,000,000.0
Cash Flow Hedges \| Designated as Hedging Instrument
Derivative [Line Items]
Aggregate Notional Amount			$ 1,875,000,000
Fair Value Asset (Liability)	$ (53,547,000)		(93,769,000)
Cash Flow Hedges \| Designated as Hedging Instrument \| Cross Currency Interest Rate Swap Three
Derivative [Line Items]
Fair Value Asset (Liability)	$ 17,314,000
Cash Flow Hedges \| Designated as Hedging Instrument \| Cross Currency Interest Rate Swap Three \| Long
Derivative [Line Items]
Fixed Rate	3.00%	3.00%
Aggregate Notional Amount \| SFr		SFr 414,387,000		SFr 420,137,000
Cash Flow Hedges \| Designated as Hedging Instrument \| Cross Currency Interest Rate Swap Three \| Short
Derivative [Line Items]
Fixed Rate	3.98%	3.98%
Aggregate Notional Amount	$ 465,185,000		471,640,000
Cash Flow Hedges \| Designated as Hedging Instrument \| Codman \| Cross Currency Interest Rate Swap One
Derivative [Line Items]
Fair Value Asset (Liability)	$ (955,000)		(4,335,000)
Cash Flow Hedges \| Designated as Hedging Instrument \| Codman \| Cross Currency Interest Rate Swap One \| Long
Derivative [Line Items]
Fixed Rate	1.85%	1.85%
Aggregate Notional Amount \| SFr		SFr 48,533,000
Cash Flow Hedges \| Designated as Hedging Instrument \| Codman \| Cross Currency Interest Rate Swap One \| Short
Derivative [Line Items]
Fixed Rate	4.46%	4.46%
Aggregate Notional Amount	$ 50,000,000
Cash Flow Hedges \| Designated as Hedging Instrument \| Codman \| Cross Currency Interest Rate Swap Two
Derivative [Line Items]
Fair Value Asset (Liability)	$ (868,000)		(11,262,000)
Cash Flow Hedges \| Designated as Hedging Instrument \| Codman \| Cross Currency Interest Rate Swap Two \| Long
Derivative [Line Items]
Fixed Rate	1.95%	1.95%
Aggregate Notional Amount \| SFr		SFr 145,598,000
Cash Flow Hedges \| Designated as Hedging Instrument \| Codman \| Cross Currency Interest Rate Swap Two \| Short
Derivative [Line Items]
Fixed Rate	4.52%	4.52%
Aggregate Notional Amount	$ 150,000,000
Cash Flow Hedges \| Designated as Hedging Instrument \| Codman \| Cross Currency Interest Rate Swap Three
Derivative [Line Items]
Fair Value Asset (Liability)			(7,843,000)
Cash Flow Hedges \| Designated as Hedging Instrument \| Codman \| Cross-currency swap
Derivative [Line Items]
Fair Value Asset (Liability)	$ 15,491,000		$ (23,441,000)