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Other Long-Term Obligations (Detail) - CAD
CAD in Millions
Jun. 30, 2016
Dec. 31, 2015
Schedule of Other Liabilities [Line Items]    
Employee retirement benefits [1] CAD 1,289 CAD 1,470
Asset retirement obligations and other environmental liabilities [2] 1,670 1,628
Share-based incentive compensation liabilities 142 134
Other obligations 354 365
Total other long-term obligations [3] CAD 3,455 CAD 3,597
[1] Total recorded employee retirement benefits obligations also included $58 million in current liabilities (2015 - $59 million).
[2] Total asset retirement obligations and other environmental liabilities also included $117 million in current liabilities (2015 - $116 million).
[3] Other long-term obligations included amounts to related parties of $125 million (2015 - $146 million).