Fair Value Accounting and Financial Instruments - Narrative (Details) - DERIVATIVES NOT DESIGNATED AS HEDGING INSTRUMENTS - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Total derivative, collateral, offset	$ 42,500,000	$ 0
Energy risk management assets, current \| Natural gas derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, collateral, offset	23,524,000
Energy risk management assets, noncurrent \| Natural gas derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, collateral, offset	$ 18,976,000

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958

Name:	us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant