Business Combination - Summary of Pro Forma Financial Information (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Net (loss) income	$ (114)	$ (57)	$ 45	$ 34	$ (171)	$ 79
Restructuring and integration costs	20		63		89	75
Transaction costs	$ 11		37		$ 15	40
Debt extinguishment costs						10
Chicago Bridge & Iron Company N.V. [Member]
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Restructuring and integration costs			54			62
Transaction costs			29			36
Debt extinguishment costs			11			11
Chicago Bridge & Iron Company N.V. [Member] | Elimination of Restructuring, Integration and Transaction Costs [Member]
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Net (loss) income			$ 94			$ 109