DERIVATIVE INSTRUMENTS - Narrative (Details) - USD ($)	1 Months Ended
Sep. 30, 2019	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Accumulated other comprehensive income	$ (183,400,000)	$ (58,800,000)
Other Foreign Currency Translation Adjustments \| Net investment hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Accumulated other comprehensive income	372,100,000	214,800,000
Cross-currency swap contracts \| Net investment hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	550,000,000.0
Interest rate swap contracts \| Interest Rate Risk
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	3,000,000,000.0	2,000,000,000.0
Derivative, incremental notional amount	1,000,000,000.0
Foreign exchange forward contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	(14,500,000)
Cash flow hedges in AOCI, net of tax		(13,300,000)
Cash flow hedge to be reclassified during next 12 months	(3,900,000)
Foreign exchange forward contracts \| Other Foreign Currency Translation Adjustments \| Net investment hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Accumulated other comprehensive income	$ 3,900,000	$ 0.0

Derivative, Incremental Notional Amount

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Nominal or face amount used to calculate payment on derivative.

+ References

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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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