Equity-Based Compensation - Total Stock-Based Compensation Expense Recognized (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expenses	$ 52	[1]	$ 23	$ 23
Selling, General and Administrative Costs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expenses	26
Selling, General and Administrative Costs [Member] | Chicago Bridge & Iron Company N.V. [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expenses	12
Restructuring Costs [Member] | Chicago Bridge & Iron Company N.V. [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expenses	$ 26

[1] Compensation expense in 2018 included $26 million recorded within SG&A (including $12 million associated with the Combination) and $26 million recorded within Restructuring costs in our Consolidated Statements of Operations, as a result of accelerated vesting for employees who were terminated as a result of the Combination.