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Decommissioning Liabilities (Tables)

12 Months Ended

Dec. 31, 2021

Provision for decommissioning, restoration and rehabilitation costs [abstract]

Summary of Decommissioning Provision


			2021												2020
Decommissioning Liabilities, Beginning of Year						1,248												1,235
Acquisitions (Note 5)						2,856												—
Liabilities Incurred						30												14

Liabilities Settled						(144)												(42)
Liabilities Disposed						(140)												(2)
Transfers to Liabilities Related to Assets Held for Sale (Note 16)						(128)												—
Change in Estimated Future Cash Flows						(472)												13
Change in Discount Rates						450												(28)
Unwinding of Discount on Decommissioning Liabilities (Note 7)						199												57
Foreign Currency Translation						7												1
Decommissioning Liabilities, End of Year						3,906												1,248

Description Of Major Assumptions Made Concerning Future Events Other Provisions Explanatory

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


			Sensitivity						2021																								2020
As at December 31,			Range						Increase												Decrease												Increase												Decrease
Credit-Adjusted Risk Free Rate			± one percent									(623)												875												(228)												313
Inflation Rate			± one percent									873												(625)												321												(235)