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Financial Instruments - Summary of Changes in Inputs to Option Pricing Model, Resulted in Unrealized Gains (Losses) Impacting Earnings Before Income Tax (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2021 CAD ($)
WCS Forward Prices |
Disclosure Of Sensitivity Of Fair Value Measurement To Changes In Unobservable Inputs Liabilities [Line Items] |
Sensitivity Price Range | 5.00
Increase in volatility | $ (74)
Decrease in volatility | 74
WTI Option Implied Volatility |
Disclosure Of Sensitivity Of Fair Value Measurement To Changes In Unobservable Inputs Liabilities [Line Items] |
Increase in volatility | (1)
Decrease in volatility | $ 1
Sensitivity Range | 5.00%
Canadian to U.S. Dollar Foreign Exchange Rate Option Implied Volatility |
Disclosure Of Sensitivity Of Fair Value Measurement To Changes In Unobservable Inputs Liabilities [Line Items] |
Increase in volatility | $ 0
Decrease in volatility | $ 0
Sensitivity Range | 5.00%

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- Definition Contingent liabilities sensitivity price range. + References No definition available. + Details
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- Definition Contingent liabilities sensitivity range. + References No definition available. + Details
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- Definition Theoretical impact to net earnings before tax from decrease in option pricing model sensitivity inputs. + References No definition available. + Details
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- Definition Theoretical impact to net earnings before tax from increase in option pricing model sensitivity inputs. + References No definition available. + Details
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- Details
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- Details
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- Details
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