Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Amount of gain (loss) from the increase (decrease) in fair value of foreign currency derivatives and nonderivative instruments designated as fair value hedging instruments which were recognized in earnings, net of offsets by the gain (loss) on the hedged item to the extent that the fair value hedge was determined to be effective.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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DERIVATIVE INSTRUMENTS - Narrative (Details)	3 Months Ended	9 Months Ended
DERIVATIVE INSTRUMENTS - Narrative (Details)	Sep. 30, 2018 USD ($)	Sep. 30, 2018 USD ($)	Oct. 10, 2018 USD ($)	Oct. 01, 2018 USD ($)	Dec. 31, 2017 USD ($)	Nov. 28, 2017 USD ($)	Oct. 02, 2017 CHF (SFr)	Oct. 02, 2017 USD ($)
Derivative [Line Items]
Pre-tax income recorded in AOCI related to cash flow hedges to be reclassified to earnings in the next twelve months	$ 14,300,000	$ 14,300,000
Designated as Hedging Instrument \| Cash Flow Hedging
Derivative [Line Items]
Notional amount	1,050,000,000	1,050,000,000
Interest Rate Swap
Derivative [Line Items]
Notional amount	1,050,000,000	1,050,000,000			$ 1,050,000,000
Interest Rate Swap \| Designated as Hedging Instrument \| Cash Flow Hedging \| Subsequent Event
Derivative [Line Items]
Notional amount			$ 225,000,000.0
Foreign Exchange Forward \| Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount						$ 8,900,000.0
Loss from the change in fair value	200,000	200,000
Cross-currency swap \| Codman
Derivative [Line Items]
Gain (loss), reclassification from AOCI, foreign currency rate translation, intercompany loan	(2,600,000)	2,200,000
Gain reclassified into income	1,900,000	5,900,000
Pre-tax income recorded in AOCI related to cash flow hedges to be reclassified to earnings in the next twelve months	7,600,000	7,600,000
Cross-currency swap \| Codman \| Other income (expense)
Derivative [Line Items]
Gain (loss) recorded to AOCI	$ (3,100,000)	$ 3,000,000
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 \| Net Investment Hedging \| Subsequent Event
Derivative [Line Items]
Notional amount				$ 354,500,000.0