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Financial Instruments (Tables) | 9 Months Ended
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Sep. 30, 2021
Disclosure of detailed information about financial instruments [abstract] |
Reconciliation of Changes in the Fair Value of Available for Sale Financial Assets | The following table provides a reconciliation of changes in the fair value of private equity instruments classified at FVOCI:
| Total |
As at December 31, 2020 |  | 52 |
Acquisition |  | 1 |
Change in Fair Value (1) |  | — |
As at September 30, 2021 |  | 53 |
(1) Changes in fair value are recorded in OCI.
Summary of Unrealized Risk Management Positions | Summary of Unrealized Risk Management Positions
| September 30, 2021 |  |  | December 31, 2020 |
| Risk Management |  |  | Risk Management |
As at | Asset |  | Liability |  | Net |  |  | Asset |  |  | Liability |  |  | Net |
Crude Oil, Natural Gas, Condensate and Refined Products |  | 24 |  |  |  | 316 |  |  |  | (292) |  |  |  | 5 |  |  |  | 58 |  |  |  | (53) |
Summary of Fair Value Hierarchy for Risk Management Assets and Liabilities Carried at Fair Value | The following table presents the Company’s fair value hierarchy for risk management assets and liabilities carried at fair value:
As at |  | September 30, 2021 |  | December 31, 2020 |
Level 2 – Prices Sourced From Observable Data or Market Corroboration |  | (292) |  |  |  | (53) |
Reconciliation of Changes in the Fair Value of Cenovus's Risk Management Assets and Liabilities | The following table provides a reconciliation of changes in the fair value of Cenovus’s risk management assets and liabilities from January 1 to September 30:
| 2021 |
Fair Value of Contracts, Beginning of Year |  | (53) |
Acquisition |  | (14) |
Fair Value of Contracts Realized During the Period |  | 725 |
Change in Fair Value of Contracts in Place at Beginning of Year and Contracts Entered Into During the Period |  | (951) |
Unrealized Foreign Exchange Gain (Loss) on U.S. Dollar Contracts |  | 1 |
Fair Value of Contracts, End of Period |  | (292) |
Summary of Changes in Inputs to Option Pricing Model, Resulted in Unrealized Gains (Losses) Impacting Earnings Before Income Tax | Changes in the following inputs to the option pricing model, with fluctuations in all other variables held constant, could have resulted in unrealized gains (losses) impacting earnings before income tax as follows:
As at September 30, 2021 | Sensitivity Range |  |  | Increase |  |  |  | Decrease |
WCS Forward Prices | ± $5.00 per barrel |  |  | (74) |  |  |  | 74 |
WTI Option Implied Volatility | ± five percent |  |  | (1) |  |  |  | 1 |
Canadian to U.S. Dollar Foreign Exchange Rate Option Implied Volatility | ± five percent |  |  | — |  |  |  | — |
The following table summarizes the sensitivity of the fair value of Cenovus’s risk management positions to independent fluctuations in commodity prices and foreign exchange rates, with all other variables held constant. Management believes the fluctuations identified in the table below are a reasonable measure of volatility. The impact of fluctuating commodity prices on the Company’s open risk management positions could have resulted in an unrealized gain (loss) impacting earnings before income tax as follows:
As at September 30, 2021 | Sensitivity Range |  |  | Increase |  |  |  | Decrease |
Crude Oil Commodity Price | ± US$5.00/bbl Applied to WTI, Condensate and Related Hedges |  |  | (199) |  |  |  | 199 |
WCS and Condensate Differential Price | ± US$2.50/bbl Applied to WCS and Differential Hedges Tied to Production |  |  | 5 |  |  |  | (5) |
Refined Products Commodity Price | ± US$5.00/bbl Applied to Heating Oil and Gasoline Hedges |  |  | (11) |  |  |  | 11 |
U.S. to Canadian Dollar Exchange Rate | ± 0.05 in the U.S. to Canadian Dollar Exchange Rate |  |  | 11 |  |  |  | (12) |
Summary of Earnings Impact of (Gain) Loss from Risk Management Positions |
| Three Months Ended |  |  | Nine Months Ended |
For the periods ended September 30, |  | 2021 |  |  |  | 2020 |  |  |  | 2021 |  |  |  | 2020 |
Realized (Gain) Loss |  | 184 |  |  |  | 138 |  |  |  | 725 |  |  |  | 226 |
Unrealized (Gain) Loss |  | (27) |  |  |  | (135) |  |  |  | 226 |  |  |  | 7 |
(Gain) Loss on Risk Management |  | 157 |  |  |  | 3 |  |  |  | 951 |  |  |  | 233 |
Realized and unrealized gains and losses on risk management are recorded in the reportable segment to which the derivative instrument relates.

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