Impact of Derivative Activities on Condensed Consolidated Statements of Income (Detail) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Derivative Instruments, Gain (Loss) [Line Items] | |||
| Commodity gains (losses) recognized in the Consolidated Statements of Operations | $ 88,422,000 | $ (68,131,000) | $ 37,427,000 |
| Cash Settlements Interest Rate Swap Operating Activities, Net | (2,210,000) | 0 | 0 |
| Cash Settlements Commodity Operating Activities | 80,297,000 | (4,136,000) | (48,291,000) |
| Commodity cash settlements and premiums received (paid) recognized in the Consolidated Statements of Cash Flows | 78,087,000 | (4,136,000) | (48,291,000) |
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | (7,510,000) | 0 | 0 |
| Gain (Loss) on Commodity Derivative Instruments | $ (95,932,000) | $ 68,131,000 | $ (37,427,000) |
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- Definition Cash Settlements Commodity Operating Activities No definition available.
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- Definition Cash Settlements Interest Rate Swap Operating Activities, Net No definition available.
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- Definition Gain (Loss) on Commodity Derivative Instruments No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of interest rate derivatives not designated as hedging instruments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The increase (decrease) during the reporting period in the assets (liabilities) created through trading commodity-based derivative instruments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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