POSTRETIREMENT BENEFITS (Details 2) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Amounts recognized in consolidated balance sheet [Abstract]
Accrued benefit in current liabilities	$ (0.5)	$ (0.6)
Accrued benefit in noncurrent liabilities	(635.9)	(638.1)
Accumulated other comprehensive loss	786.5	786.6
Net balance sheet impact	150.1	147.9
Other Postretirement Benefit Plans, Defined Benefit
Amounts recognized in consolidated balance sheet [Abstract]
Accrued benefit in current liabilities	(4.3)	(5.1)
Accrued benefit in noncurrent liabilities	(46.5)	(47.1)
Accumulated other comprehensive loss	25.6	25.1
Net balance sheet impact	(25.2)	(27.1)
U.S. | Other Postretirement Benefit Plans, Defined Benefit
Amounts recognized in consolidated balance sheet [Abstract]
Accrued benefit in current liabilities	(4.0)	(4.8)
Accrued benefit in noncurrent liabilities	(36.6)	(38.8)
Accumulated other comprehensive loss	24.7	24.8
Net balance sheet impact	(15.9)	(18.8)
Foreign | Other Postretirement Benefit Plans, Defined Benefit
Amounts recognized in consolidated balance sheet [Abstract]
Accrued benefit in current liabilities	(0.3)	(0.3)
Accrued benefit in noncurrent liabilities	(9.9)	(8.3)
Accumulated other comprehensive loss	0.9	0.3
Net balance sheet impact	$ (9.3)	$ (8.3)