Commitments and Contingencies - Additional Information (Detail)		3 Months Ended
Feb. 23, 2018 Lawsuit	Mar. 31, 2018 USD ($) Lawsuit
Commitments And Contingencies Disclosure [Line Items]
Potential environmental liabilities		$ 0
Asset retirement obligations		0
Liquidated damages exposure		1,000,000
Liabilities of liquidated damages		$ 0
Chicago Bridge & Iron Company N.V. [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of shareholders filed seperate law suits under federal securities laws \| Lawsuit		5
Number of actions allege violations \| Lawsuit		5
Number of pending shareholder actions \| Lawsuit	4

Commitments and contingencies disclosure.

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Loss contingency number of actions allege violations.

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Loss contingency number of pending shareholder actions.

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Loss contingency number of shareholders who filed separate lawsuits.

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of loss contingency liability.

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

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