Commitments and Contingencies - Narrative (Details) - Waymon L Boyd Dredge Fire $ in Millions		9 Months Ended
Aug. 21, 2020 gal item	Sep. 30, 2022 USD ($) claim lawsuit
Other Commitments [Line Items]
Number of crew deaths \| item	5
Number of gallons of oil, diesel fuel, and contaminated water discharged \| gal	18,000
Pending Litigation
Other Commitments [Line Items]
Accrued loss contingency		$ 0.3
Settled Litigation
Other Commitments [Line Items]
Number of lawsuits filed \| lawsuit		8
Number of claimants \| claim		13
Estimated costs recognized		$ 206.4
Payments to claimants		206.1
Costs reimbursed from insurance		$ 205.3

The number of individuals filing claims in a legal matter.

No definition available.

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- Definition

Number of crew deaths resulting from the dredge fire.

+ References

No definition available.

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- Definition

The number of gallons of oil, diesel fuel, and contaminated water discharged during the fire.

+ References

No definition available.

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- Definition

Number of lawsuits filed against the entity.

+ References

No definition available.

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- Definition

Proceeds received for insurance reimbursement of costs associated with claims and the costs of defense against claims in a legal action.

+ References

No definition available.

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- Definition

Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 450
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12021-110248

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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.

+ References

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3536-108585

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