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Financial Instruments and Risk Management (Tables) | 12 Months Ended
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Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Fair Value of Derivative Instruments Not Designated as Hedging Instruments | At December 31, 2022 and 2021, the fair value of derivative instruments not designated as hedging instruments are presented in the following table. See also Note P.
(Thousands of dollars) |  | Asset (Liability) Derivatives Fair Value at December 31,
Type of Derivative Contract |  | Balance Sheet Location |  | 2022 |  | 2021
Commodity swaps |  | Accounts payable |  | — |  |  | (239,882) |
Commodity collars |  | Accounts receivable |  | — |  |  | 4,280 |
|  | Accounts payable |  | — |  |  | (19,533) |
Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments | For the years ended December 31, 2022, 2021 and 2020, the gains and losses recognized in the Consolidated Statements of Operations for derivative instruments not designated as hedging instruments are presented in the following table.
|  |  |  | Gain (Loss)
(Thousands of dollars) |  |  |  | Year Ended December 31,
Type of Derivative Contract |  | Statement of Operations Locations |  | 2022 |  | 2021 |  | 2020
Commodity swaps |  | (Loss) Gain on derivative instruments |  | $ | (160,690) |  |  | $ | (510,596) |  |  | $ | 202,661 |
Commodity collars |  | (Loss) Gain on derivative instruments |  | (159,721) |  |  | (15,254) |  |  | — |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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