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POST-RETIREMENT BENEFITS (Tables)
 12 Months Ended
Dec. 31, 2019
Employee Benefits [Abstract]  
Post-employment amounts
The amounts recognized in the balance sheet are determined as follows:
For the years ended December 31
2019

2018

Present value of funded obligations

$69


$57

Fair value of plan assets
(76
)
(65
)
(Surplus) deficit of funded plans

($7
)

($8
)
Present value of unfunded obligations
46

44

Total deficit of defined benefit pension plans

$39


$36

Impact of minimum funding requirement/asset ceiling
—

—

Liability in the balance sheet

$39


$36

The weighted average duration of the defined benefit obligation is 9 years (2018: 14 years).
 
 
Less than a year

Between 1-2 years

Between 2-5 years

Over 5 years

Total

Pension benefits

$7


$7


$22


$139


$175

Other post-retirement benefits
1

1

2

5

9

At December 31, 2018

$8


$8


$24


$144


$184

Pension benefits
27

7

20

95

149

Other post-retirement benefits
—

—

1

3

4

At December 31, 2019

$27


$7


$21


$98


$153

The table below outlines where the Company’s post-employment amounts and activity are included in the financial statements: 
For the years ended December 31
2019

2018

Balance sheet obligations for:
 
 
Defined pension benefits

$39


$36

Other post-retirement benefits
4

6

Liability in the balance sheet

$43


$42

Income statement charge included income statement for:
 
 
Defined pension benefits

$1


$1

Other post-retirement benefits
—

—

 

$1


$1

Measurements for:
 
 
Defined pension benefits

($5
)

($4
)
Other post-retirement benefits
2

—

 

($3
)

($4
)
Significant actuarial assumptions
The significant actuarial assumptions were as follows:
As at December 31
Pension Plans 2019
Other Post-Retirement Benefits 2019

Pension Plans 2018
Other Post-Retirement Benefits 2018

Discount rate
2.50%-3.30%
3.35
%
3.75-4.65%
4.45
%