POSTRETIREMENT BENEFITS (Details 2) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Amounts recognized in consolidated balance sheet [Abstract]
Accrued benefit in current liabilities	$ (2.9)	$ (0.8)
Accrued benefit in noncurrent liabilities	(733.3)	(797.7)
Accumulated other comprehensive loss	928.5	1,003.2
Net balance sheet impact	192.3	204.7
Other Postretirement Benefit Plans, Defined Benefit
Amounts recognized in consolidated balance sheet [Abstract]
Accrued benefit in current liabilities	(3.4)	(3.7)
Accrued benefit in noncurrent liabilities	(52.7)	(49.0)
Accumulated other comprehensive loss	27.0	25.2
Net balance sheet impact	(29.1)	(27.5)
U.S. | Other Postretirement Benefit Plans, Defined Benefit
Amounts recognized in consolidated balance sheet [Abstract]
Accrued benefit in current liabilities	(3.1)	(3.3)
Accrued benefit in noncurrent liabilities	(41.1)	(38.5)
Accumulated other comprehensive loss	24.9	23.5
Net balance sheet impact	(19.3)	(18.3)
Foreign | Other Postretirement Benefit Plans, Defined Benefit
Amounts recognized in consolidated balance sheet [Abstract]
Accrued benefit in current liabilities	(0.3)	(0.4)
Accrued benefit in noncurrent liabilities	(11.6)	(10.5)
Accumulated other comprehensive loss	2.1	1.7
Net balance sheet impact	$ (9.8)	$ (9.2)