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Goodwill and intangible assets
12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and intangible assets Goodwill and intangible assets
GoodwillIntangible assets
(in millions of Canadian dollars)Net
carrying
amount
CostAccumulated
amortization
Net
carrying
amount
Total goodwill and intangible assets
Balance at December 31, 2019$194 $27 $(15)$12 $206 
Additions (Note 11)
142 31 — 31 173 
Amortization— — (3)(3)(3)
Foreign exchange impact(7)(3)— (3)(10)
Balance at December 31, 2020329 55 (18)37 366 
Additions (Note 10)
— — 
Amortization— — (3)(3)(3)
Foreign exchange impact(1)— — — (1)
Balance at December 31, 2021$328 $64 $(21)$43 $371