Annual report pursuant to Section 13 and 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Accumulated Other Comprehensive Income (Loss) Changes in Equity (Details)

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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Accumulated Other Comprehensive Income (Loss) Changes in Equity (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax $ (315.7) $ (281.1) $ (263.9) $ (260.6)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax 0.0 0.0 225.4 239.3
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax (3.1) (2.8) (0.5) 0.0
Accumulated other comprehensive loss (318.8) (283.9) (39.0) $ (21.3)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax (59.0) (40.8) (44.2)  
Net loss (gain) reclassified from accumulated other comprehensive loss 24.1 (204.1) 26.5  
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive loss (315.7) (281.1) (263.9)  
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax (56.7) (42.9) (29.8)  
Net loss (gain) reclassified from accumulated other comprehensive loss 22.1 25.7 26.5  
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive loss     225.4  
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 0.0 2.7 (13.9)  
Net loss (gain) reclassified from accumulated other comprehensive loss 0.0 (228.1) 0.0  
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive loss (3.1) (2.8) (0.5)  
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax (2.3) (0.6) (0.5)  
Net loss (gain) reclassified from accumulated other comprehensive loss $ 2.0 $ (1.7) $ 0.0