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Commitments and Contingencies (Details) - USD ($) $ in Millions			1 Months Ended	9 Months Ended
	Nov. 19, 2020	Sep. 28, 2020	May 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Surety Bond
Commitments and Contingencies [Line Items]
Off-balance sheet commitments				$ 10.2
Revolving Credit Facility
Commitments and Contingencies [Line Items]
Off-balance sheet commitments				6.7
Settled | Mirada Litigation
Commitments and Contingencies [Line Items]
Amount proposed to be paid under Settlement Agreement		$ 42.8
Payments for legal settlements	$ 20.0		$ 22.8
Volume Commitment Agreement - Permian Basin Sale
Commitments and Contingencies [Line Items]
Other commitments					$ 32.6
Volume Commitment Agreement -Subsequent Oil and Gas Delivery Commitment
Commitments and Contingencies [Line Items]
Other commitments				$ 258.6
Other commitment, duration term				7 years

X

- Definition

Other Commitment, Duration Term

+ References

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- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

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X

- Definition

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82919202-210446

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

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.

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No definition available.

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- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585

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