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Risk Management Activities and Financial Instruments (Tables)
12 Months Ended
Mar. 31, 2014
Risk Management Activities and Financial Instruments  
Schedule of volumes of inventories which were economically hedged using each type of contract

 

 
  As at March 31,
 
  2014   2013

Forwards

  (1.4 Bcf)   1.6 Bcf

Futures

  20.1 Bcf   14.1 Bcf

Swaps

  (0.3 Bcf)   10.0 Bcf

Options

   
         

 

  18.4 Bcf   25.7 Bcf