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Capital Management - Schedule of Consolidated Capital (Detail) - CAD
CAD in Millions
Dec. 31, 2017
Dec. 31, 2016
Disclosure of classes of share capital [abstract]    
Total equity CAD 42,163 CAD 42,823
Adjusted for AOCI loss on cash flow hedges (109) (232)
Total equity excluding AOCI on cash flow hedges 42,272 43,055
Qualifying capital instruments 8,387 7,180
Total capital CAD 50,659 CAD 50,235