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PENSION PLAN (Tables)
 12 Months Ended
Dec. 31, 2019
Employee Benefits [Abstract]  
Disclosure of obligations and plan assumptions
As at December 31
 
 
($ millions) 
2019

2018

Registered defined benefit net obligation
19

19

Supplemental defined benefit net obligation
16

12

Net employee benefit obligations
35

31

Principal actuarial assumptions used:
As at December 31
 
 
(weighted average percent)
2019

2018

Discount rate
3.1
%
3.8
%
Future pension earning increases
4.0
%
4.0
%
Assumptions regarding future mortality are based on published statistics and mortality tables. The current longevities underlying the values of the liabilities in the defined plans are as follows:
As at December 31
 
 
(years)
2019
2018
Longevity at age 65 for current pensioners


Males
21.8
21.7
Females
24.2
24.1
Longevity at age 65 for current member aged 45


Males
22.8
22.8
Females
25.1
25.1
Disclosure of analysis of present value of defined benefit obligations
Defined Benefit Obligations
As at December 31
($ millions)
2019
2018
Registered
Plans

Supplemental
Plan

Registered
Plan

Supplemental
Plan

Present value of unfunded obligations
—

16

—

12

Present value of funded obligations
250

—

212

—

Total present value of obligations
250

16

212

12

Fair value of plan assets
231

—

193

—

Recognized liability for defined benefit obligations
(19
)
(16
)
(19
)
(12
)
Disclosure of fair value of plan assets
Registered Defined Benefit Pension Plan Assets Comprise
As at December 31
 
 
(Percent)
2019
2018
Equity securities
62
61
Debt
38
39
 
100
100
Disclosure of movement in benefit obligation and plan assets, recognized expenses, and actuarial gains and losses
Actuarial Gains and Losses Recognized in Other Comprehensive Income
 
2019
2018
($ millions)
Registered
Plans

Supplemental
Plan

Total

Registered
Plan

Supplemental
Plan

Total

Balance at January 1
(28
)
(1
)
(29
)
(22
)
(1
)
(23
)
Remeasurements:




—







Financial assumptions
(21
)
(1
)
(22
)
3

—

3

Experience adjustments
—

—

—

—

—

—

Return on plan assets excluding interest income
16

—

16

(9
)
—

(9
)
Recognized loss during the period after tax
(5
)
(1
)
(6
)
(6
)
—

(6
)
Balance at December 31
(33
)
(2
)
(35
)
(28
)
(1
)
(29
)
Movement in the Present Value of the Defined Benefit Pension Obligation
 
2019
2018
($ millions)
Registered
Plans

Supplemental
Plan

Registered
Plan

Supplemental
Plan

Defined benefits obligations at January 1
212

12

192

11

Benefits paid by the plan
(12
)
—

(12
)
—

Current service costs
15

1

14

1

Interest expense
8

—

7

—

Transfer from Younger
—

—

16

—

Actuarial losses (gains) in other comprehensive income
27

3

(5
)
—

Defined benefit obligations at December 31
250

16

212

12

Movement in the Present Value of Registered Defined Benefit Pension Plan Assets
($ millions)
2019

2018

Fair value of plan assets at January 1
193

182

Contributions paid into the plan
20

19

Benefits paid by the plan
(12
)
(12
)
Return on plan assets
22

(13
)
Transfer from Younger
—

10

Interest income
8

7

Fair value of registered plan assets at December 31
231

193

Expense Recognition in Earnings
For the years ended December 31 
 
 
($ millions)
2019

2018

Registered Plan
 
 
Current service costs
15

14

Interest on obligation
8

8

Expected return on plan assets
(8
)
(7
)
 
15

15

The expense is recognized in the following line items in the consolidated statement of comprehensive income:
For the years ended December 31 
 
 
($ millions)
2019

2018

Registered Plan
 
 
Operating expenses
7

8

General and administrative expense
8

7

 
15

15