Annual report pursuant to Section 13 and 15(d)

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

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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Details of Accumulated Other Comprehensive Income (Loss) Components (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Total reclassifications for the period $ 24.1 $ (204.1) $ 26.5
Reclassification out of Accumulated Other Comprehensive Income [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Amortization of prior service (cost) credit (0.7) (0.8) (0.4)
Defined Benefit Plan, Amortization of Gain (Loss) 28.6 26.2 26.9
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment 0.1 0.3 0.0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax 28.0 25.7 26.5
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax (5.9) 0.0 0.0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax 22.1 25.7 26.5
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax 0.0 (228.1) 0.0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax 0.0 (228.1) 0.0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 2.5 (1.7) 0.0
TaxOnDerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoEarnings (0.5) 0.0 0.0
Derivative, Gain (Loss) on Derivative, Net 2.0 (1.7) 0.0
Total reclassifications for the period $ 24.1 $ (204.1) $ 26.5