Derivative Instruments - Impact of Derivative Activities on Condensed Consolidated Statements of Income (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
|
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Derivatives | $ (21,084) | $ (6,891) | $ (119,679) | $ 109,879 |
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | (84) | 32 | (48) | (7,527) |
| Gain (Loss) on Commodity Derivative Instruments | (21,000) | (6,923) | (119,631) | 117,406 |
| Cash Settlements Interest Rate Swap Operating Activities | (973) | (919) | (2,851) | (1,287) |
| Cash Settlements Commodity Operating Activities | (21,265) | 7,337 | (43,190) | 66,582 |
| Cash settlements and premiums received (paid), net | $ (22,238) | $ 6,418 | $ (46,041) | $ 65,295 |
| X | ||||||||||
- Definition Cash Settlements Commodity Operating Activities No definition available.
|
| X | ||||||||||
- Definition Cash Settlements Derivatives, Operating Activities No definition available.
|
| X | ||||||||||
- Definition Cash Settlements Interest Rate Swap Operating Activities, Net No definition available.
|
| X | ||||||||||
- Definition Gain (Loss) on Commodity Derivative Instruments No definition available.
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|