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Risk management - Disclosure Details Of Financial Contracts One (Detail) - Crude Oil 1 [member] - Oct - Dec 2020 - WTI [member] | 9 Months Ended
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Sep. 30, 2020 bbl / d $ / bbl
Disclosure of Disclosure Details Of Financial Contracts One [Line Items] |
Notional volume | bbl / d | 530
Term | Oct - Dec 2020
Pricing | $ / bbl | 56.64

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