No definition available.

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- Definition

Represents the percentage of business which has required bonds.

+ References

No definition available.

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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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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 number of claims settled and dismissed during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

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Commitments and Contingencies - Other and Bonds (Details) $ in Millions	1 Months Ended	3 Months Ended			12 Months Ended
	Apr. 30, 2018 claim	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($) claim	Dec. 31, 2016 USD ($)	Dec. 31, 2018
Commitments and Contingencies
Gain on the claim settlement		$ 4.0
British Petroleum
Commitments and Contingencies
Number of claims settled \| claim	2		2
Gain on the claim settlement			$ 1.0	$ 0.6
Surety \| Minimum
Surety
Percentage of business which has required bonds					20.00%
Surety \| Maximum
Surety
Percentage of business which has required bonds					30.00%