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SUBSEQUENT EVENT (Details) - Subsequent Event
CAD / shares in Units, CAD in Millions
1 Months Ended
Feb. 29, 2016
CAD
Jan. 31, 2016
CAD
agreement
CAD / shares
Apr. 30, 2016
CAD / shares
Dividends Payable, Amount Per Share | CAD / shares   CAD 0.03 CAD 0.01
Canadian natural gas assets      
Agreements | agreement   2  
Proceeds from Sale of Productive Assets | CAD CAD 193 CAD 183