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Quarterly report pursuant to Section 13 or 15(d)

SHAREHOLDERS' EQUITY Details of Accumulated Other Comprehensive Income (Loss) Components (Details)

v3.8.0.1
SHAREHOLDERS' EQUITY Details of Accumulated Other Comprehensive Income (Loss) Components (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Sep. 30, 2017
Sep. 30, 2016
Reclassification out of Accumulated Other Comprehensive Income [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax $ 6.8 Ìý Ìý $ 7.4 Ìý Ìý $ 19.7 $ 19.9
Realized Gain Loss On Derivatives [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 0.0 Ìý Ìý 1.2 Ìý Ìý 0.0 1.2
TaxOnDerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoEarnings 0.0 Ìý Ìý (0.5) Ìý Ìý 0.0 (0.5)
Amount of (gain)/loss recognized in income on derivative 0.0 Ìý Ìý 0.7 Ìý Ìý 0.0 0.7
Accumulated Defined Benefit Plans Adjustment [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 6.8 $ 6.5 $ 6.4 6.7 $ 6.3 $ 6.3 Ìý Ìý
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Prior service credits (0.2) Ìý Ìý (0.4) Ìý Ìý (0.4) (1.2)
Defined Benefit Plan, Amortization of Gain (Loss) 7.0 Ìý Ìý 7.1 Ìý Ìý 20.1 20.4
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax 6.8 Ìý Ìý 6.7 Ìý Ìý 19.7 19.2
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax 0.0 Ìý Ìý 0.0 Ìý Ìý 0.0 0.0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax $ 6.8 Ìý Ìý $ 6.7 Ìý Ìý $ 19.7 $ 19.2