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ACCOUNTS PAYABLE AND OTHER
 12 Months Ended
Dec. 31, 2017
Subclassifications of assets, liabilities and equities [abstract]  
ACCOUNTS PAYABLE AND OTHER
ACCOUNTS PAYABLE AND OTHER
AS AT DEC. 31
(MILLIONS)
2017

 
2016

Accounts payable
$
5,158

 
$
6,028

Provisions
1,651

 
1,427

Other liabilities
11,156

 
4,460

Total
$
17,965

 
$
11,915

The current and non-current balances of accounts payable and other liabilities are as follows:
AS AT DEC. 31
(MILLIONS)
2017

 
2016

Current
$
11,148

 
$
7,721

Non-current
6,817

 
4,194

Total
$
17,965

 
$
11,915


Post-Employment Benefits
The company offers pension and other post-employment benefit plans to employees of certain of its subsidiaries. The company’s obligations under its defined benefit pension plans are determined periodically through the preparation of actuarial valuations. The benefit plans’ in-year valuation change was an increase of $4 million (2016 – decrease of $40 million). The discount rate used was 4% (2016 – 4%) with an increase in the rate of compensation of 3% (2016 – 3%), and an investment rate of 5% (2016 – 4%).
AS AT DEC. 31
(MILLIONS)
2017

 
2016

Plan assets
$
516

 
$
592

Less accrued benefit obligation:
 
 
 
Defined benefit pension plan
(685
)
 
(790
)
Other post-employment benefits
(90
)
 
(88
)
Net liability
(259
)
 
(286
)
Less: net actuarial gains (losses)
(2
)
 
2

Accrued benefit liability
$
(261
)
 
$
(284
)