DERIVATIVE INSTRUMENTS - Narrative (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)	Oct. 02, 2017 CHF (SFr)	Oct. 02, 2017 USD ($)
Designated as Hedging Instrument | Cash Flow Hedges
Derivative [Line Items]
Notional amount	$ 1,475,000,000
Interest Rate Swap
Derivative [Line Items]
Notional amount	1,500,000,000.0		$ 1,500,000,000.0
Cross-currency swap | Codman
Derivative [Line Items]
Gain (loss), reclassification from AOCI, foreign currency rate translation, intercompany loan	3,300,000	$ (6,400,000)
Gain reclassified into other income	1,900,000	1,900,000
Pre-tax income recorded in AOCI related to cash flow hedges to be reclassified to earnings in the next twelve months	6,800,000
Cross-currency swap | Codman | Other income, net
Derivative [Line Items]
Gain (loss) recorded to AOCI	5,500,000	$ (7,000,000)
Cross-currency swap | Short | Codman
Derivative [Line Items]
Notional amount					$ 300,000,000.0
Cross-currency swap | Long | Codman
Derivative [Line Items]
Notional amount | SFr				SFr 291,200,000.0
Cross-currency swap | Designated as Hedging Instrument
Derivative [Line Items]
Gain recorded in AOCI, change in fair value	7,900,000
Cross-currency swap | Designated as Hedging Instrument | Net Investment Hedges
Derivative [Line Items]
Gain reclassified into other income	2,300,000
Pre-tax income recorded in AOCI related to cash flow hedges to be reclassified to earnings in the next twelve months	8,900,000
Cross-currency swap | Designated as Hedging Instrument | Codman | Cash Flow Hedges
Derivative [Line Items]
Notional amount	33,300,000.0
Loss recorded in other income, net	$ 400,000