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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2016
Income Tax Disclosure [Abstract]  
Summary of Income Tax Expense
 
For the three months ended March 31
(in millions of Canadian dollars)
2016
 
2015
Current income tax expense
$
77

 
$
102

Deferred income tax expense
93

 
32

Income tax expense
$
170

 
$
134