EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ 1,431.2
Unrealized (losses) gains, arising during the period	21.8
Amounts reclassified out of AOCI during the period, gross	10.6
Amounts reclassified out of AOCI during the period, taxes	(0.2)
Noncontrolling interest	(10.6)
Balance at end of period	1,719.2
Accumulated other comprehensive loss	(417.2)	$ (441.5)
Total Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(83.1)
Taxes on unrealized (losses) gains, arising during the period	2.9
Balance at end of period	(58.6)
Accumulated Foreign Currency Adjustment Including Portion Attributable Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(94.1)
Unrealized (losses) gains, arising during the period	(12.9)
Taxes on unrealized (losses) gains, arising during the period	(0.4)
Amounts reclassified out of AOCI during the period, gross	23.5
Amounts reclassified out of AOCI during the period, taxes	(3.8)
Noncontrolling interest	(10.6)
Balance at end of period	(98.3)
AOCI Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	358.4
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(441.5)
Balance at end of period	(417.2)
Accumulated other comprehensive loss	(417.2)	$ (441.5)
Foreign Exchange Contract [Member] \| Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	11.0
Unrealized (losses) gains, arising during the period	35.6
Taxes on unrealized (losses) gains, arising during the period	3.1
Amounts reclassified out of AOCI during the period, gross	(12.9)
Amounts reclassified out of AOCI during the period, taxes	3.6
Balance at end of period	40.4
Interest Rate Swap [Member] \| Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Unrealized (losses) gains, arising during the period	(0.9)
Taxes on unrealized (losses) gains, arising during the period	0.2
Balance at end of period	$ (0.7)

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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