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PENSION AND OTHER POSTRETIREMENT BENEFITS
 6 Months Ended
Jun. 30, 2022
Retirement Benefits [Abstract]  
PENSION AND OTHER POSTRETIREMENT BENEFITS PENSION AND OTHER POSTRETIREMENT BENEFITS
Three months ended June 30,Six months ended June 30,
2022202120222021
(millions of Canadian dollars)
Service cost45 48 90 96 
Interest cost1
41 32 82 64 
Expected return on plan assets1
(98)(84)(196)(168)
Amortization of actuarial (gain)/loss1
(1)14 (2)28 
Net periodic benefit (credit)/cost(13)10 (26)20 
1 Reported within Other income/(expense) in the Consolidated Statements of Earnings.