Business Combination - Summary of Preliminary Purchase Price Allocation (Parenthetical) (Detail) - USD ($) $ in Millions	May 10, 2018		Jun. 30, 2018
Business Acquisition [Line Items]
Goodwill			$ 3,926
Chicago Bridge & Iron Company N.V. [Member]
Business Acquisition [Line Items]
Provisions for estimated losses on projects	$ 112
Project related intangible assets, net	145
Project related intangible liabilities, net	33
Goodwill	$ 3,926	[1]	3,900
Goodwill deductible for tax purposes			$ 1,700
Chicago Bridge & Iron Company N.V. [Member] | Minimum [Member]
Business Acquisition [Line Items]
Business combination, Intangible assets amortized liabilities projects progress	2 years
Chicago Bridge & Iron Company N.V. [Member] | Maximum [Member]
Business Acquisition [Line Items]
Business combination, Intangible assets amortized liabilities projects progress	4 years

[1] Goodwill resulted from the acquired established workforce, which does not qualify for separate recognition, as well as expected future cost savings and revenue synergies associated with the combined operations. Of the $3.9 billion of estimated goodwill recorded in conjunction with the Combination, $1.7 billion is deductible for tax purposes. Given the proximity of the Combination Date to the reporting date of June 30, 2018, the allocation of goodwill for each of our operating groups is in process, and therefore has not been presented. We have not finalized our assessment of the fair values of purchased receivables, intangible assets and liabilities, inventory, property and equipment, joint venture and consortium arrangements, tax balances, contingent liabilities, long-term leases or acquired contracts. The purchase price allocation is based on preliminary information and is subject to change when additional information is obtained. The final purchase price allocation will result in adjustments to various assets and liabilities, including the residual amount allocated to goodwill during the measurement period.