Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Details of Accumulated Other Comprehensive Income (Loss) Components (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Accumulated other comprehensive loss $ (283.9) $ (39.0) $ (21.3) $ (18.0)
Other Comprehensive Income (Loss), Foreign Currency Translation, Dissolution of Entity 0.0 0.0 0.2  
Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax (1.7) 0.0 1.2  
Gain on foreign currency translation (204.1) 26.5 26.5  
Accumulated Other Comprehensive Income (Loss) [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax (40.8) (44.2) (29.8)  
Gain on foreign currency translation (204.1) 26.5 26.5  
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax (0.6) (0.5) (3.3)  
Gain on foreign currency translation (1.7) 0.0 0.7  
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 2.7 (13.9) 18.4  
Gain on foreign currency translation (228.1) 0.0 0.2  
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax (42.9) (29.8) (44.8)  
Gain on foreign currency translation 25.7 26.5 25.6  
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | 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 0.8 0.4 1.5  
Defined Benefit Plan, Amortization of Gain (Loss) 26.2 26.9 27.1  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment 0.3 0.0 0.0  
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax 25.7 26.5 25.6  
Accumulated Net Unrealized Investment Gain (Loss) [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax     (0.1)  
Gain on foreign currency translation     0.0  
Foreign Currency Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax (228.1) 0.0 0.2  
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax (228.1) 0.0 0.0  
Realized Gain Loss On Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
TaxOnDerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoEarnings 0.0 0.0 (0.5)  
Derivative, Gain (Loss) on Derivative, Net (1.7) 0.0 0.7  
T-Lock Amortization [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 0.0 0.0 1.2  
Australian Hedge Contracts [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net $ (1.7) $ 0.0 $ 0.0