Cash, Cash Equivalents and Restricted Cash - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2018		Dec. 31, 2017	[1]	Dec. 31, 2016	Dec. 31, 2015
Cash And Cash Equivalents [Line Items]
Cash, cash equivalents, and restricted cash associated with combination	$ 845	[1]	$ 408		$ 612	$ 782
Chicago Bridge & Iron Company N.V. [Member]
Cash And Cash Equivalents [Line Items]
Cash, cash equivalents, and restricted cash associated with combination	$ 248

[1] Our December 31, 2018 total Cash, cash equivalents and restricted cash included $248 million associated with the Combination.