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Post-employee benefit plans (Tables)
 12 Months Ended
Dec. 31, 2018
Employee Benefits [Abstract]  
Components of post-employment benefit plans service cost
COMPONENTS OF POST-EMPLOYMENT BENEFIT PLANS SERVICE COST
FOR THE YEAR ENDED DECEMBER 31
2018

2017

DB pension
(213
)
(208
)
DC pension
(106
)
(102
)
OPEBs
(3
)
(6
)
Plan amendment gain on OPEBs and DB pension
—

16

Less:
 
 
 
Capitalized benefit plans cost
56

58

Total post-employment benefit plans service cost included in operating costs
(266
)
(242
)
Other costs recognized in severance, acquisition and other costs
(4
)
(10
)
Total post-employment benefit plans service cost
(270
)
(252
)
Components of post-employment benefit plans financing cost
COMPONENTS OF POST-EMPLOYMENT BENEFIT PLANS FINANCING COST
FOR THE YEAR ENDED DECEMBER 31
2018

2017

DB pension
(23
)
(18
)
OPEBs
(46
)
(54
)
Total interest on post-employment benefit obligations
(69
)
(72
)
Defined benefit plans recognized in comprehensive income
The statements of comprehensive income include the following amounts before income taxes.
 
 
2018

2017

Cumulative losses recognized directly in equity, January 1
(2,984
)
(2,646
)
 
Actuarial gains (losses) in other comprehensive income(1)
79

(313
)
 
Decrease (increase) in the effect of the asset limit(2)
13

(25
)
Cumulative losses recognized directly in equity, December 31
(2,892
)
(2,984
)
(1)The cumulative actuarial losses recognized in the statements of comprehensive income are $3,138 million in 2018.
(2)The cumulative decrease in the effect of the asset limit recognized in the statements of comprehensive income is $246 million in 2018.
Components of post-employment benefit (obligations) assets
The following table shows the change in post-employment benefit obligations and the fair value of plan assets.
 
 
 
 
DB PENSION PLANS
OPEB PLANS
TOTAL
 
 
 
 
2018

2017

2018

2017

2018

2017

Post-employment benefit obligations, January 1
(24,404
)
(20,853
)
(1,653
)
(1,684
)
(26,057
)
(22,537
)
 
Current service cost
(213
)
(208
)
(3
)
(6
)
(216
)
(214
)
 
Interest on obligations
(864
)
(896
)
(56
)
(65
)
(920
)
(961
)
 
Actuarial gains (losses) (1)
750

(1,193
)
163

(28
)
913

(1,221
)
 
Net curtailment (losses) gains
(4
)
(4
)
—

16

(4
)
12

 
Loss on plan transfer
—

(6
)
—

—

—

(6
)
 
Benefit payments
1,342

1,320

80

81

1,422

1,401

 
Employee contributions
(11
)
(10
)
—

—

(11
)
(10
)
 
Acquisition of MTS
—

(2,677
)
—

(5
)
—

(2,682
)
 
Plan transfer
—

122

—

—

—

122

 
Other
—

1

—

38

—

39

Post-employment benefit obligations, December 31
(23,404
)
(24,404
)
(1,469
)
(1,653
)
(24,873
)
(26,057
)
Fair value of plan assets, January 1
23,945

20,563

299

280

24,244

20,843

 
Expected return on plan assets(2)
841

878

10

11

851

889

 
Actuarial (losses) gains(1)
(817
)
896

(17
)
12

(834
)
908

 
Benefit payments
(1,342
)
(1,320
)
(80
)
(81
)
(1,422
)
(1,401
)
 
Employer contributions
433

305

75

77

508

382

 
Employee contributions
11

10

—

—

11

10

 
Acquisition of MTS
—

2,735

—

—

—

2,735

 
Plan transfer
—

(122
)
—

—

—

(122
)
Fair value of plan assets, December 31
23,071

23,945

287

299

23,358

24,244

Plan deficit
 
 
(333
)
(459
)
(1,182
)
(1,354
)
(1,515
)
(1,813
)
Effect of asset limit
 
 
(20
)
(33
)
—

—

(20
)
(33
)
Post-employment benefit liability, December 31
(353
)
(492
)
(1,182
)
(1,354
)
(1,535
)
(1,846
)
Post-employment benefit assets included in other non-current assets
331

262

—

—

331

262

Post-employment benefit obligations
(684
)
(754
)
(1,182
)
(1,354
)
(1,866
)
(2,108
)
(1)Actuarial gains (losses) include experience (losses) gains of ($693 million) in 2018 and $911 million in 2017.
(2)The actual return on plan assets was $17 million or 0.2% in 2018 and $1,797 million or 8.2% in 2017.
Funded status of post-employment benefit plans cost
The following table shows the funded status of our post-employment benefit obligations.
 
 
FUNDED
PARTIALLY FUNDED(1)
UNFUNDED(2)
TOTAL
 
 
Decem-ber 31, 2018

Decem-ber 31, 2017

January 1, 2017

Decem-ber 31, 2018

Decem-ber 31, 2017

January 1, 2017

Decem-ber 31, 2018

Decem-ber 31, 2017

January 1, 2017

Decem-ber 31, 2018

Decem-ber 31, 2017

January 1, 2017

Present value of post-employment benefit obligations
(22,765
)
(23,746
)
(20,249
)
(1,816
)
(1,976
)
(1,995
)
(292
)
(335
)
(293
)
(24,873
)
(26,057
)
(22,537
)
Fair value of plan assets
23,018

23,894

20,520

340

350

323

—

—

—

23,358

24,244

20,843

Plan surplus (deficit)
253

148

271

(1,476
)
(1,626
)
(1,672
)
(292
)
(335
)
(293
)
(1,515
)
(1,813
)
(1,694
)
(1)
The partially funded plans consist of supplementary executive retirement plans (SERPs) for eligible employees and OPEBs. The company partially funds the SERPs through letters of credit and a retirement compensation arrangement account with Canada Revenue Agency. Certain paid-up life insurance benefits are funded through life insurance contracts.
(2)
Our unfunded plans consist of OPEBs, which are pay-as-you-go.
Disclosure of significant assumptions
We used the following key assumptions to measure the post-employment benefit obligations and the net benefit plans cost for the DB pension plans and OPEB plans. These assumptions are long-term, which is consistent with the nature of post-employment benefit plans.
 
 
 
DB PENSION PLANS AND OPEB PLANS
AS AT
 
December 31, 2018

December 31, 2017

January 1, 2017

 
 
 
 
Post-employment benefit obligations
 
 
 
 
Discount rate
3.8
%
3.6
%
4.0
%
 
Rate of compensation increase
2.25
%
2.25
%
2.25
%
 
Cost of living indexation rate(1)
1.6
%
1.6
%
1.6
%
 
Life expectancy at age 65 (years)
23.1

23.2

23.1

(1)Cost of living indexation rate is only applicable to DB pension plans.
 
 
 
DB PENSION PLANS AND OPEB PLANS
For the year ended December 31
 
2018

2017

 
 
 
Net post-employment benefit plans cost
 
 
 
Discount rate
3.7
%
4.2
%
 
Rate of compensation increase
2.25
%
2.25
%
 
Cost of living indexation rate(1)
1.6
%
1.6
%
 
Life expectancy at age 65 (years)
23.2

23.1


(1)Cost of living indexation rate is only applicable to DB pension plans.
Healthcare cost trend rates and sensitivity analysis
The following table shows the effect of a 1% change in the assumed trend rates in healthcare costs.
EFFECT ON POST-EMPLOYMENT BENEFITS – INCREASE/(DECREASE)
1% INCREASE

1% DECREASE

Total service and interest cost
5

(3
)
Post-employment benefit obligations
111

(90
)
The following table shows a sensitivity analysis of key assumptions used to measure the net post-employment benefit obligations and the net post-employment benefit plans cost for our DB pension plans and OPEB plans.
 
 
 
 
IMPACT ON NET POST-EMPLOYMENT
BENEFIT PLANS COST FOR 2018 –
INCREASE/(DECREASE)
IMPACT ON POST-EMPLOYMENT BENEFIT
OBLIGATIONS AT DECEMBER 31, 2018 –
INCREASE/(DECREASE)
 
 
 
CHANGE IN
ASSUMPTION

INCREASE IN
ASSUMPTION

DECREASE IN
ASSUMPTION

INCREASE IN
ASSUMPTION

DECREASE IN
ASSUMPTION

Discount rate
0.5
%
(77
)
65

(1,605
)
1,716

Life expectancy at age 65
1 year

35

(34
)
796

(771
)
Post-employment benefit plan assets
The following table shows the target allocations for 2018 and the allocation of our post-employment benefit plan assets at December 31, 2018 and 2017, and at January 1, 2017.
 
 
 
WEIGHTED AVERAGE
TARGET ALLOCATION
TOTAL PLAN ASSETS FAIR VALUE

ASSET CATEGORY
2018
December 31, 2018

December 31, 2017

January 1, 2017

Equity securities
20% - 40%
20
%
22
%
22
%
Debt securities
60% - 100%
64
%
65
%
68
%
Alternative investments
0% - 40%
16
%
13
%
10
%
Total
 
100
%
100
%
100
%
The following table shows the fair value of the DB pension plan assets for each category.
AS AT
December 31, 2018

December 31, 2017

January 1, 2017

Observable markets data
 
 
 
 
Equity securities
 
 
 
 
 
Canadian
844

1,045

901

 
 
Foreign
3,770

4,349

3,682

 
Debt securities
 
 
 
 
 
Canadian
12,457

13,126

12,469

 
 
Foreign
2,004

1,890

1,068

 
 
Money market
327

491

387

Non-observable markets inputs
 
 
 
 
Alternative investments
 
 
 
 
 
Private equities
1,804

1,484

1,164

 
 
Hedge funds
1,014

965

726

 
 
Real estate
758

484

55

 
 
Other
93

111

111

Total
23,071

23,945

20,563
Disclosure of contributions to post-employment benefit plans
The following table shows the amounts we contributed to the DB and DC pension plans and the payments made to beneficiaries under OPEB plans.
 
 
 
DB PLANS(1)
DC PLANS
OPEB PLANS
FOR THE YEAR ENDED DECEMBER 31
2018

2017

2018

2017

2018

2017

Contributions
(433
)
(305
)
(106
)
(108
)
(75
)
(77
)
(1)Includes voluntary contributions of $240 million in 2018 and $100 million in 2017.