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Asset retirement obligations (Tables)
 12 Months Ended
Dec. 31, 2018
Disclosure Of Asset Retirement Obligations [Abstract]  
Disclosure of other provisions [text block]
The following table reconciles the change in Vermilion’s asset retirement obligations:
 
($M)
2018
 
2017
Balance at January 1
517,180
 
 
525,022
 
Additional obligations recognized
211,580
 
 
3,273
 
Changes in estimated abandonment timing and costs
(98,158
)
 
(48,904
)
Obligations settled
(15,765
)
 
(9,334
)
Accretion
31,219
 
 
26,971
 
Changes in discount rates
(6,646
)
 
(2,586
)
Foreign exchange
10,754
 
 
22,738
 
Balance at December 31
650,164
 
 
517,180
 
Disclosure of detailed information about risk free rates used to discount the obligations [text block]
The risk-free rates used as inputs to discount the obligations were as follows:
 
 
Dec 31, 2018
 
Dec 31, 2017
Canada
2.2
%
 
2.3
%
France
1.6
%
 
1.8
%
Netherlands
0.4
%
 
0.5
%
Germany
0.9
%
 
1.0
%
Ireland
1.6
%
 
0.4
%
Australia
2.6
%
 
2.9
%
USA
2.7
%
 
2.4
%