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Employee Future Benefits (Tables)
 12 Months Ended
Dec. 31, 2020
Employee Benefits [Abstract]  
Costs Recognized
The costs recognized in net earnings during the year on the defined benefit, defined contribution and other post-employment benefits plans are as follows:
Year ended Dec. 31, 2020RegisteredSupplementalOtherTotal
Current service cost5 2 1 8 
Administration expenses1 — — 1 
Interest cost on defined benefit obligation16 3 1 20 
Interest on plan assets(11)(1)— (12)
Curtailment and amendment gain(2)— — (2)
Defined benefit expense9 4 2 15 
Defined contribution expense9 — — 9 
Net expense18 4 2 24 
Year ended Dec. 31, 2019RegisteredSupplementalOtherTotal
Current service cost7 2 1 10 
Administration expenses2 — — 2 
Interest cost on defined benefit obligation19 3 1 23 
Interest on plan assets(12)(1)— (13)
Curtailment and amendment gain(3)— — (3)
Defined benefit expense13 4 2 19 
Defined contribution expense9 — — 9 
Net expense22 4 2 28 


Year ended Dec. 31, 2018RegisteredSupplementalOtherTotal
Current service cost9 2 1 12 
Administration expenses1 — — 1 
Interest cost on defined benefit obligation18 3 1 22 
Interest on plan assets(13)— — (13)
Defined benefit expense15 5 2 22 
Defined contribution expense10 — — 10 
Net expense25 5 2 32 
The expected employer contributions for 2021 for the defined benefit pension and other post-employment benefit plans are as follows:
 RegisteredSupplementalOtherTotal
Expected employer contributions5 5 2 12 
Defined Benefit Obligation
The status of the defined benefit pension and other post-employment benefit plans is as follows:
Year ended Dec. 31, 2020RegisteredSupplementalOtherTotal
Fair value of plan assets367 14 — 381 
Present value of defined benefit obligation(542)(109)(24)(675)
Funded status – plan deficit(175)(95)(24)(294)
Amount recognized in the consolidated financial statements:    
Accrued current liabilities(5)(5)(2)(12)
Other long-term liabilities(170)(90)(22)(282)
Total amount recognized(175)(95)(24)(294)
Year ended Dec. 31, 2019RegisteredSupplementalOtherTotal
Fair value of plan assets373 13 — 386 
Present value of defined benefit obligation(543)(99)(22)(664)
Funded status – plan deficit(170)(86)(22)(278)
Amount recognized in the consolidated financial statements:    
Accrued current liabilities(3)(5)(2)(10)
Other long-term liabilities(167)(81)(20)(268)
Total amount recognized(170)(86)(22)(278)
The present value of the obligation for the defined benefit pension and other post-employment benefit plans is as follows:
 RegisteredSupplementalOtherTotal
Present value of defined benefit obligation as at Dec. 31, 2018514 80 25 619 
Current service cost7 2 1 10 
Interest cost19 3 1 23 
Benefits paid(51)(4)(1)(56)
Curtailment(3)— — (3)
Actuarial gain arising from demographic assumptions— — (2)(2)
Actuarial loss arising from financial assumptions57 9 2 68 
Actuarial gain (loss) arising from experience adjustments2 9 (4)7 
Effect of translation on US plans(2)— — (2)
Present value of defined benefit obligation as at Dec. 31, 2019543 99 22 664 
Current service cost5 2 1 8 
Interest cost16 3 1 20 
Benefits paid(45)(5)(1)(51)
Curtailment(2)— — (2)
Actuarial loss arising from demographic assumptions— — — — 
Actuarial loss arising from financial assumptions43 10 2 55 
Actuarial gain arising from experience adjustments(17)— — (17)
Effect of translation on US plans(1)— (1)(2)
Present value of defined benefit obligation as at Dec. 31, 2020542 109 24 675 
Plan Assets
The fair value of the plan assets of the defined benefit pension and other post-employment benefit plans is as follows:
 RegisteredSupplementalOtherTotal
As at Dec. 31, 2018368 13 — 381 
Interest on plan assets12 1 — 13 
Net return on plan assets40 — — 40 
Contributions6 4 1 11 
Benefits paid(50)(5)(1)(56)
Administration expenses(2)— — (2)
Effect of translation on US plans(1)— — (1)
As at Dec. 31, 2019373 13 — 386 
Interest on plan assets11 1 — 12 
Net return on plan assets25 (1)— 24 
Contributions6 6 1 13 
Benefits paid(45)(5)(1)(51)
Administration expenses(1)— — (1)
Effect of translation on US plans(2)— — (2)
As at Dec. 31, 2020367 14 — 381 
The fair value of the Corporation’s defined benefit plan assets by major category is as follows:
Year ended Dec. 31, 2020Level ILevel IILevel IIITotal
Equity securities    
Canadian— 64 — 64 
US— 30 — 30 
International— 103 — 103 
Private— — 1 1 
Bonds    
AAA— 36 — 36 
AA— 67 — 67 
A— 34 — 34 
BBB1 22 — 23 
Below BBB— 4 — 4 
Money market and cash and cash equivalents— 19 — 19 
Total1 379 1 381 

Year ended Dec. 31, 2019Level ILevel IILevel IIITotal
Equity securities    
Canadian— 66 — 66 
US— 28 — 28 
International— 102 — 102 
Private— — 1 1 
Bonds    
AAA— 40 — 40 
AA— 68 — 68 
A— 37 — 37 
BBB1 21 — 22 
Below BBB— 3 — 3 
Money market and cash and cash equivalents— 19 — 19 
Total1 384 1 386 
Assumptions Assumptions
 
The significant actuarial assumptions used in measuring the Corporation’s defined benefit obligation for the defined benefit pension and other post-employment benefit plans are as follows:
 As at Dec. 31, 2020As at Dec. 31, 2019
(per cent)RegisteredSupplementalOther RegisteredSupplementalOther
Accrued benefit obligation      
Discount rate2.4 2.3 2.3 3.0 3.0 3.0 
Rate of compensation increase2.9 3.0 — 2.8 3.0 — 
Assumed health-care cost trend rate      
Health-care cost escalation(1)(3)
— — 6.8 — — 7.0 
Dental-care cost escalation— — 4.0 — — 4.0 
Benefit cost for the year      
Discount rate3.0 3.0 3.0 3.9 3.8 3.9 
Rate of compensation increase2.9 3.0 — 2.5 3.0 — 
Assumed health-care cost trend rate      
Health-care cost escalation(2)(4)
— — 7.1 — — 7.4 
Dental-care cost escalation— — 4.0 — — 4.0 
(1) 2020 Post- and pre-65 rates: decreasing gradually to 4.5% by 2029 and remaining at that level thereafter for the US and decreasing gradually by 0.3% per year to 4.5% in 2030 for Canada.
(2) 2020 Post- and pre-65 rates: decreasing gradually to 4.5% by 2029 and remaining at that level thereafter for the US and decreasing gradually by 0.3% per year to 4.5% in 2030 for Canada.
(3) 2019 Post- and pre-65 rates: decreasing gradually to 4.5% by 2030 and remaining at that level thereafter for the US and decreasing gradually by 0.3% per year to 4.5% in 2027 for Canada.
(4) 2019 Post- and pre-65 rates: decreasing gradually to 4.5% by 2027 and remaining at that level thereafter for the US and decreasing gradually by 0.3% per year to 4.5% in 2027 for Canada.
Schedule of Estimated Increase In The Net Defined Benefit Obligation Assuming Certain Changes In Key Assumptions
The following table outlines the estimated increase in the net defined benefit obligation assuming certain changes in key assumptions:
 Canadian plansUS plans
Year ended Dec. 31, 2020Registered  Supplemental  Other PensionOther
1% decrease in the discount rate
74 17 2 3 1 
1% increase in the salary scale
5 — — 4 1 
1% increase in the health-care cost trend rate
— — 2 — — 
10% improvement in mortality rates
20 4 — 1 —