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PENSION AND EMPLOYEE FUTURE BENEFITS (Tables)
 12 Months Ended
Dec. 31, 2019
Disclosure of defined benefit plans [abstract]  
Summary of actuarial assumptions
Actuarial assumptions as at December 31:
 
2019
 
2018
 
2017
(%)
Defined benefit
pension plans
 
Non-pension
benefit plans
 
Defined benefit
pension plans
 
Non-pension
benefit plans
 
Defined benefit
pension plans
 
Non-pension
benefit plans
Discount rate
1.8% - 6.9%
 
3.2% - 7.2%
 
2.5% - 7.2%
 
3.9% - 7.4%
 
2.4% - 7.3%
 
3.7% - 7.1%
Rate of price inflation
1.5% - 3.5%
 
N/A
 
1.5% - 3.5%
 
N/A
 
1.5% - 3.5%
 
N/A
Rate of compensation increases
2.5% - 4.0%
 
2.5% - 4.0%
 
2.5% - 4.0%
 
2.5% - 4.0%
 
2.5% - 4.0%
 
2.5% - 4.0%
Health care trend rate(1)
N/A
 
4.5% - 6.9%
 
N/A
 
5.3% - 6.9%
 
N/A
 
5.3% - 6.9%
(1) Assumed immediate trend rate at year-end.
Summary of A 50 basis point change in the assumptions mentioned before, used for the calculation of the benefit obligations
A 50 basis point change in the assumptions mentioned before, used for the calculation of the benefit obligations as at December 31, 2019, would result in the following increase (decrease) of the benefit obligations:
(MILLIONS)
Defined benefit
 pension plans

 
Non-pension
benefit plans

Discount rate
 
 
 
50 basis point increase
$
(12
)
 
$
(4
)
50 basis point decrease
14

 
5

Rate of price inflation and inflation-linked assumptions
 
 
 
50 basis point increase
5

 
N/A

50 basis point decrease
(4
)
 
N/A

Health care cost trend rate
 
 
 
50 basis point increase
N/A

 
4

50 basis point decrease
N/A

 
(3
)
Summary of pension expense
The pension expense recognized in the consolidated statements of income and consolidated statements of comprehensive income for the year ended December 31:
 
2019
 
2018
 
2017
(MILLIONS)
Defined benefit
pension plans

 
Non-pension
benefit plans

 
Defined benefit
pension plans

 
Non-pension
benefit plans

 
Defined benefit
pension plans

 
Non-pension
benefit plans

Current service costs
$
3

 
$
1

 
$
3

 
$
2

 
$
3

 
$
1

Past service costs (recovery)
—

 
—

 
—

 
—

 
(1
)
 
—

Interest expense
2

 
3

 
2

 
3

 
2

 
3

Administrative expenses
1

 
—

 
1

 
—

 
1

 
—

Recognized in consolidated statement of income
6

 
4

 
6

 
5

 
5

 
4

Remeasurement of the net defined benefit liability:
 
 
 
 
 
 
 
 
 
 
 
Return on plan assets
(15
)
 
—

 
5

 
—

 
(8
)
 
—

Actuarial changes arising from changes in demographic assumptions
1

 
—

 
(1
)
 
—

 
1

 
(2
)
Actuarial changes arising from changes in financial assumptions
25

 
3

 
(9
)
 
(4
)
 
7

 
3

Experience adjustments
—

 
—

 
1

 
(1
)
 
—

 
1

Recognized in consolidated statement of comprehensive income
11

 
3

 
(4
)
 
(5
)
 
—

 
2

Total
$
17

 
$
7

 
$
2

 
$
—

 
$
5

 
$
6
Summary of Brookfield Renewables obligations in respect of its defined benefit plans
The amounts included in the consolidated statements of financial position arising from Brookfield Renewable’s obligations in respect of its defined benefit plans are as follows:
 
2019
 
2018
 
2017
(MILLIONS)
Defined benefit
pension plans

 
Non-pension
benefit plans

 
Defined benefit
pension plans

 
Non-pension
benefit plans

 
Defined benefit
pension plans

 
Non-pension
benefit plans

Present value of defined benefit obligation
$
188

 
$
58

 
$
157

 
$
53

 
$
172

 
$
57

Fair value of plan assets
(143
)
 
(4
)
 
(126
)
 
(4
)
 
(135
)
 
(5
)
Net liability
$
45

 
$
54

 
$
31

 
$
49

 
$
37

 
$
52
Summary of defined benefit obligation
The movement of the defined benefit obligation for the year ended December 31 is as follows:
 
2019
 
2018
 
2017
(MILLIONS)
Defined benefit
pension plans

 
Non-pension
benefit plans

 
Defined benefit
pension plans

 
Non-pension
benefit plans

 
Defined benefit
pension plans

 
Non-pension
benefit plans

Balance, beginning of year
$
157

 
$
53

 
$
172

 
$
57

 
$
158

 
$
53

Current service cost
3

 
1

 
3

 
2

 
3

 
1

Past service (recovery) cost
—

 
—

 
—

 
—

 
(1
)
 
—

Interest expense
7

 
3

 
7

 
3

 
7

 
3

Remeasurement losses (gains)
 
 
 
 
 
 
 
 
 
 
 
Actuarial changes arising from changes in demographic assumptions
1

 
—

 
(1
)
 
—

 
1

 
(2
)
Actuarial changes arising from changes in financial assumptions
25

 
3

 
(9
)
 
(4
)
 
7

 
3

Experience adjustments
—

 
—

 
1

 
(1
)
 
—

 
1

Benefits paid
(8
)
 
(2
)
 
(9
)
 
(2
)
 
(7
)
 
(2
)
Exchange differences
3

 
—

 
(7
)
 
(2
)
 
4

 
—

Balance, end of year
$
188

 
$
58

 
$
157

 
$
53

 
$
172

 
$
57
Summary of fair value of plan assets
The movement in the fair value of plan assets for the year ended December 31 is as follows:
 
2019
 
2018
 
2017
(MILLIONS)
Defined benefit
pension plans

 
Non-pension
benefit plans

 
Defined benefit
pension plans

 
Non-pension
benefit plans

 
Defined benefit
pension plans

 
Non-pension
benefit plans

Balance, beginning of year
$
126

 
$
4

 
$
135

 
$
5

 
$
119

 
$
5

Interest income
5

 
—

 
5

 
—

 
5

 
—

Return on plan assets
15

 
—

 
(5
)
 
(1
)
 
8

 
—

Employer contributions
2

 
2

 
5

 
2

 
5

 
2

Business combination
—

 
—

 
—

 
—

 
—

 
—

Benefits paid
(8
)
 
(2
)
 
(9
)
 
(2
)
 
(7
)
 
(2
)
Exchange differences
3

 
—

 
(5
)
 
—

 
5

 
—

Balance, end of year
$
143

 
$
4

 
$
126

 
$
4

 
$
135

 
$
5
Summary of composition of plan assets
The composition of plan assets as at December 31 are as follows:  
(%)
2019
 
2018
Asset category:
 
 
 
Cash and cash equivalents
2
 
2
Equity securities
52
 
47
Debt securities
46
 
51
 
100
 
100