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PROVISIONS (Tables)
 12 Months Ended
Dec. 31, 2017
Other provisions [abstract]  
Provisions
 
2017

2016

At January 1

$2,246


$1,982

PERs divested during the year
(31
)
—

Closed Sites
 
 
Impact of revisions to expected cash flows recorded in earnings
46

146

Settlements
 
 
    Cash payments
(41
)
(28
)
    Settlement gains
(1
)
(1
)
Accretion
12

10

Operating Sites
 
 
PERs arising in the year
836

134

Settlements
 
 
    Cash payments
(18
)
(34
)
    Settlement gains
(1
)
(3
)
Accretion
48

40

At December 31

$3,096


$2,246

Current portion (note 24)
(152
)
(67
)
 

$2,944


$2,179

 
As at December 31, 2017

As at December 31, 2016

Environmental rehabilitation ("PER")

$2,944


$2,179

Post-retirement benefits
48

72

Share-based payments
37

34

Other employee benefits
27

45

Other
85

33

 

$3,141


$2,363