Quarterly report pursuant to Section 13 or 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details of Accumulated Other Comprehensive Income (Loss) Components) (Details)

v3.20.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details of Accumulated Other Comprehensive Income (Loss) Components) (Details) - Reclassification out of Accumulated Other Comprehensive Income [Member] - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]    
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax $ (0.3) $ (0.2)
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax (7.4) (7.2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax 7.1 7.0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax (1.5) (1.5)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax 5.6 5.5
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax 2.8 0.3
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax (0.6) (0.1)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax 2.2 0.2
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax $ 7.8 $ 5.7