XML 38 R20.htm IDEA: XBRL DOCUMENT v3.19.1
PENSION AND OTHER POSTRETIREMENT BENEFITS
3 Months Ended
Mar. 31, 2019
Retirement Benefits [Abstract]  
PENSION AND OTHER POSTRETIREMENT BENEFITS PENSION AND OTHER POSTRETIREMENT BENEFITS
 
Three months ended
March 31,
 
2019

2018

(millions of Canadian dollars)
 
 
Service cost
51

65

Interest cost
51

45

Expected return on plan assets
(84
)
(82
)
Amortization of actuarial loss
8

7

Amortization of prior service costs
(1
)
(1
)
Net periodic benefit costs
25

34