Quarterly report pursuant to Section 13 or 15(d)

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

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SHAREHOLDERS' EQUITY Details of Accumulated Other Comprehensive Income (Loss) Components (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Details of Accumulated Other Comprehensive Income (Loss) Components [Line Items]    
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion, Net $ (12.8) $ 2.0
Total Amount Reclassified from Accumulated Other Comprehensive Income (Loss) During the Period 16.2 4.5
Accumulated Defined Benefit Plans Adjustment [Member]
    
Details of Accumulated Other Comprehensive Income (Loss) Components [Line Items]    
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) (0.2) [1] (0.2) [1]
Defined Benefit Plan, Amortization of Gains (Losses) 4.8 [1] 9.6 [1]
Defined Benefit Plan, Curtailments 0.3 [1] 0 [1]
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax 4.9 9.4
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax (1.6) (3.0)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) 3.3 6.4
Realized Gain (Loss) on Marketable Securities [Member]
    
Details of Accumulated Other Comprehensive Income (Loss) Components [Line Items]    
Marketable Securities, Realized Gain (Loss) 0.1 0
Accumulated Other-than-Temporary Impairment [Member]
    
Details of Accumulated Other Comprehensive Income (Loss) Components [Line Items]    
Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities 0 0.1
Realized Gain (Loss) on Marketable Securities and Other than Temporary Impairment [Member]
    
Details of Accumulated Other Comprehensive Income (Loss) Components [Line Items]    
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities and Impairment on Securities Arising During Period, before tax 0.1 0.1
Other Comprehensive Income (Loss), Realized Holding Gain (Loss) on Securities and Impairment on Securities Arising During Period, Tax 0 0
Other Comprehensive Income (Loss), Realized Holding Gain (Loss) on Securities and Impairment on Securities Arising During Period, net of tax 0.1 0.1
Realized Gain Loss On Derivatives [Member]
    
Details of Accumulated Other Comprehensive Income (Loss) Components [Line Items]    
(Gain) Loss on Derivative Instruments, Net, Pretax 18.5 (2.9)
Tax on Derivative Instruments Gain/Loss Reclassified from Accumulated OCI in to Earnings (5.7) 0.9
Amount of (gain)/loss recognized in income on derivative 12.8 (2.0)
Realized Gain Loss On Derivatives [Member] | Australian Hedge Contracts [Member]
    
Details of Accumulated Other Comprehensive Income (Loss) Components [Line Items]    
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion, Net 13.0 (2.6)
Realized Gain Loss On Derivatives [Member] | Canadian Hedge Contracts [Member]
    
Details of Accumulated Other Comprehensive Income (Loss) Components [Line Items]    
Derivative Instruments, (Gain) Loss Reclassified from Accumulated OCI into Income, Effective Portion, Net $ 5.5 $ (0.3)
[1] These accumulated other comprehensive income components are included in the computation of net periodic benefit cost. See NOTE 11 - PENSIONS AND OTHER POSTRETIREMENT BENEFITS for further information.