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Trade Accounts Receivable, Net - Summary of Trade Accounts Receivable and Allowance for Expected Credit Loss (Detail) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items]        
Accounts receivable $ 1,654 $ 1,637    
ECL allowance 121 $ 116 $ 119 $ 109
Mexico [member]        
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items]        
Accounts receivable 284      
ECL allowance $ 38      
ECL average rate 13.70%      
United States [member]        
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items]        
Accounts receivable $ 477      
ECL allowance $ 8      
ECL average rate 1.70%      
Europe, Middle East, Africa and Asia [member]        
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items]        
Accounts receivable $ 766      
ECL allowance $ 51      
ECL average rate 6.70%      
South, Central America And Caribbean [member]        
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items]        
Accounts receivable $ 94      
ECL allowance $ 20      
ECL average rate 21.30%      
Other country [member]        
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items]        
Accounts receivable $ 33      
ECL allowance $ 4      
ECL average rate 12.10%