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Cash and cash equivalents and Marketable securities (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Cash at bank and in hand $ 216 $ 299
Total short-term financial investments 7,780 10,168
Total cash and cash equivalents 7,996 10,467
BRAZIL    
IfrsStatementLineItems [Line Items]    
Short-term financial investments 3,007 2,114
Foreign countries [member]    
IfrsStatementLineItems [Line Items]    
Short-term financial investments 4,773 8,054
Automatic Investing Accounts And Interest Checking Accounts [Member] | BRAZIL    
IfrsStatementLineItems [Line Items]    
Short-term financial investments 2,763 1,951
Automatic Investing Accounts And Interest Checking Accounts [Member] | Foreign countries [member]    
IfrsStatementLineItems [Line Items]    
Short-term financial investments 2,365 3,732
Other Investment Funds [Member] | BRAZIL    
IfrsStatementLineItems [Line Items]    
Short-term financial investments 244 163
Time Deposits [Member] | Foreign countries [member]    
IfrsStatementLineItems [Line Items]    
Short-term financial investments 2,388 4,310
Other Financial Investments [Member] | Foreign countries [member]    
IfrsStatementLineItems [Line Items]    
Short-term financial investments $ 20 $ 12