Decommissioning Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Provision For Decommissioning Restoration And Rehabilitation Costs [Abstract]

Summary of Decommissioning Provision

The aggregate carrying amount of the obligation is:

	2018			2017
Decommissioning Liabilities, Beginning of Year		1,029			1,847
Liabilities Incurred		8			20
Liabilities Acquired (Note 9) (1)		-			944
Liabilities Settled		(44	)		(70	)
Liabilities Disposed (1)		(30	)		(139	)
Transfers (to) from Liabilities Related to Assets Held for Sale (Note 11)		149			(1,621	)
Change in Estimated Future Cash Flows		(136	)		(155	)
Change in Discount Rate		(165	)		76
Unwinding of Discount on Decommissioning Liabilities		63			128
Foreign Currency Translation		1			(1	)
Decommissioning Liabilities, End of Year		875			1,029

(1) In connection with the Acquisition, Cenovus was deemed to have disposed of its pre-existing interest in FCCL and reacquired it at fair value as required by IFRS.

Summary of Changes to the Credit-Adjusted Risk-Free Rate or the Inflation Rate Impact on the Decommissioning Liabilities

Changes to the credit-adjusted risk-free rate or the inflation rate would have the following impact on the decommissioning liabilities:

	2018						2017
As at December 31,	Credit-Adjusted Risk-Free Rate			Inflation Rate			Credit-Adjusted Risk-Free Rate			Inflation Rate
One Percent Increase		(138	)		196			(98	)		197
One Percent Decrease		188			(145	)		192			(103	)