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

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Fair value, after the 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 not subject to a master netting arrangement and not elected to be offset.

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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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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) SFr in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	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	$ 12,500,000	$ 12,500,000
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
Derivative asset, fair value	200,000	200,000
Cross-currency swap \| Codman
Derivative [Line Items]
Gain, reclassification from AOCI, foreign currency rate translation, intercompany loan	11,300,000	4,900,000
Gain reclassified into income	2,000,000	3,900,000
Pre-tax income recorded in AOCI related to cash flow hedges to be reclassified to earnings in the next twelve months	7,700,000	7,700,000
Cross-currency swap \| Codman \| Other income (expense)
Derivative [Line Items]
Gain recorded to AOCI	$ 13,000,000	$ 6,100,000
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 291.2