Joint Venture and Consortium Arrangements - Summarized Balance Sheet Information for Proportionately Consolidated Consortiums (Detail) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Current assets		$ 6,241	$ 3,555
Total assets		8,300	8,737
Current liabilities		5,885	9,444
Proportionately Consolidated Joint Ventures [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Current assets	[1]	593	529
Non-current assets		9	6
Total assets		602	535
Current liabilities		$ 609	$ 671

[1] Our consortium arrangements may allow for excess working capital of the consortium to be advanced to the consortium participants. Such advances are returned to the ventures for working capital needs as necessary. Accordingly, at a reporting period end a consortium may have advances to its participants which are reflected as an advance receivable within current assets of the consortium. As of March 31, 2020 and December 31, 2019, Accounts receivable—other included $20 million and $41 million, respectively, related to our proportionate share of advances from the consortiums to the other consortium participants.