ACCUMULATED OTHER COMPREHENSIVE LOSS (INCOME) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	$ 4,123.3	$ 3,730.7	$ 3,730.7
Amounts recognized in AOCI	(109.1)	(120.6)
Amounts reclassified from AOCI	(3.7)	(8.3)
Ending balance	$ 4,207.3	$ 4,022.9	$ 4,123.3
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201802Member	us-gaap:AccountingStandardsUpdate201613Member
Cumulative effect, period of adoption, adjustment
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	$ (3.0)
Ending balance			$ (3.0)
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(657.4)	$ (607.6)	(607.6)
Amounts recognized in AOCI	(109.1)	(120.6)
Ending balance	(766.5)	(728.2)	(657.4)
Pension and Other Postretirement Benefits Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(69.2)	(67.1)	(67.1)
Amounts reclassified from AOCI	1.9	(1.1)
Ending balance	(67.3)	(87.5)	(69.2)
Pension and Other Postretirement Benefits Adjustments \| Cumulative effect, period of adoption, adjustment
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance		(19.3)	(19.3)
Unrealized Net Gains on Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	47.1	44.8	44.8
Amounts reclassified from AOCI	(5.6)	(7.2)
Ending balance	41.5	48.6	47.1
Unrealized Net Gains on Cash Flow Hedges \| Cumulative effect, period of adoption, adjustment
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance		11.0	11.0
Total
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(679.5)	(629.9)	(629.9)
Ending balance	$ (792.3)	(767.1)	(679.5)
Total \| Cumulative effect, period of adoption, adjustment
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance		$ (8.3)	$ (8.3)

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Indicates amendment to accounting standards.

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