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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Loss Contingencies [Line Items]  
Loss Contingency, Damages Paid, Value $ 4.0
Expected construction costs 240
Future minimum payments under non-cancelable operating leases [Abstract]  
2014 36.7
2015 11.5
2016 10.8
2017 7.6
2018 2.2
Thereafter 1.6
Leases, Operating [Abstract]  
Operating lease payment 24.0
Lessee Leasing Arrangements, Operating Leases, Term of Contract 99 years
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]  
2014 1,381.6
2015 651.9
2016 48.3
2017 $ 6.4
US [Member]
 
Loss Contingencies [Line Items]  
Loss Contingency, Pending Claims, Number 91
Canada [Member]
 
Loss Contingencies [Line Items]  
Loss Contingency, Pending Claims, Number 13