POSTRETIREMENT BENEFITS (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 2,997.8	$ 2,667.8
Service cost	10.9	11.3
Interest cost	75.1	94.7	$ 86.3
Actuarial loss	235.1	364.1
Benefits paid	(141.2)	(139.3)
Foreign currency translation adjustments	31.4	(1.8)
Benefit obligation at end of year	3,205.3	2,997.8	2,667.8
Other Postretirement Benefit Plans, Defined Benefit
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	52.7	47.0
Service cost	1.2	1.1	1.3
Interest cost	1.4	1.7	1.5
Actuarial loss	4.1	6.2
Benefits paid	(3.5)	(3.8)
Foreign currency translation adjustments	0.2	0.5
Benefit obligation at end of year	56.1	52.7	47.0
Funded status	(56.1)	(52.7)
U.S. | Other Postretirement Benefit Plans, Defined Benefit
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	41.8	37.5
Service cost	0.9	0.8
Interest cost	1.1	1.4
Actuarial loss	3.5	5.5
Benefits paid	(3.1)	(3.4)
Foreign currency translation adjustments	0.0	0.0
Benefit obligation at end of year	44.2	41.8	37.5
Funded status	(44.2)	(41.8)
Foreign | Other Postretirement Benefit Plans, Defined Benefit
Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	10.9	9.5
Service cost	0.3	0.3
Interest cost	0.3	0.3
Actuarial loss	0.6	0.7
Benefits paid	(0.4)	(0.4)
Foreign currency translation adjustments	0.2	0.5
Benefit obligation at end of year	11.9	10.9	$ 9.5
Funded status	$ (11.9)	$ (10.9)