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DERIVATIVE INSTRUMENTS - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Oct. 02, 2017 CHF (SFr)	Oct. 02, 2017 USD ($)
Derivative [Line Items]
Derivative, notional amount matured	$ 150,000,000		$ 150,000,000
Designated as Hedging Instrument | Cash Flow Hedges
Derivative [Line Items]
Current notional amount	1,475,000,000		1,475,000,000
Cross-currency swap | Codman
Derivative [Line Items]
Gain (loss), reclassification from AOCI, foreign currency rate translation, intercompany loan	5,700,000	$ (2,600,000)	3,900,000	$ 2,200,000
Gain reclassified into other income	1,800,000	1,900,000	5,500,000	5,900,000
Gain expected to be reclassified to earnings in the next twelve months	6,500,000		6,500,000
Cross-currency swap | Codman | Other income, net
Derivative [Line Items]
Gain (loss) recorded to AOCI	9,700,000	$ (3,100,000)	15,400,000	$ 3,000,000.0
Cross-currency swap | Short | Codman
Derivative [Line Items]
Current notional amount						$ 300,000,000.0
Cross-currency swap | Long | Codman
Derivative [Line Items]
Current notional amount | SFr					SFr 291,200,000
Cross-currency swap | Designated as Hedging Instrument
Derivative [Line Items]
Gain recorded in AOCI, change in fair value	17,100,000		26,600,000
Cross-currency swap | Designated as Hedging Instrument | Net Investment Hedges
Derivative [Line Items]
Gain reclassified into other income	2,500,000		7,200,000
Gain expected to be reclassified to earnings in the next twelve months	9,600,000		9,600,000
Cross-currency swap | Designated as Hedging Instrument | Codman | Cash Flow Hedges
Derivative [Line Items]
Current notional amount	$ 33,300,000		33,300,000
Loss recorded in other income, net			$ 400,000

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