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Schedule of fair value of financial instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]    
Total assets $ 601  
Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 572 $ 412
Level 3 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 29 11
Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets   100
Financial Asset At Fair Value Through Profit And Loss [Member]    
IfrsStatementLineItems [Line Items]    
Total assets   523
Financial Asset At Fair Value Through Profit And Loss [Member] | Government Securities [Member]    
IfrsStatementLineItems [Line Items]    
Total assets 278 204
Financial Asset At Fair Value Through Profit And Loss [Member] | Government Securities [Member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 278 204
Financial Asset At Fair Value Through Profit And Loss [Member] | Government Securities [Member] | Level 3 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets
Financial Asset At Fair Value Through Profit And Loss [Member] | Government Securities [Member] | Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets  
Financial Asset At Fair Value Through Profit And Loss [Member] | Corporate Bonds [Member]    
IfrsStatementLineItems [Line Items]    
Total assets 19  
Financial Asset At Fair Value Through Profit And Loss [Member] | Corporate Bonds [Member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 19  
Financial Asset At Fair Value Through Profit And Loss [Member] | Corporate Bonds [Member] | Level 3 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets  
Financial Asset At Fair Value Through Profit And Loss [Member] | Investment funds [member]    
IfrsStatementLineItems [Line Items]    
Total assets 41 92
Financial Asset At Fair Value Through Profit And Loss [Member] | Investment funds [member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 41 92
Financial Asset At Fair Value Through Profit And Loss [Member] | Investment funds [member] | Level 3 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets
Financial Asset At Fair Value Through Profit And Loss [Member] | Investment funds [member] | Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets  
Financial Asset At Fair Value Through Profit And Loss [Member] | Shares [Member]    
IfrsStatementLineItems [Line Items]    
Total assets 149 40
Financial Asset At Fair Value Through Profit And Loss [Member] | Shares [Member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 120 29
Financial Asset At Fair Value Through Profit And Loss [Member] | Shares [Member] | Level 3 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 29 11
Financial Asset At Fair Value Through Profit And Loss [Member] | Shares [Member] | Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets  
Cash And Cash Equivalent [Member]    
IfrsStatementLineItems [Line Items]    
Total assets [1]   113
Cash And Cash Equivalent [Member] | Investment funds [member]    
IfrsStatementLineItems [Line Items]    
Total assets 84 71
Cash And Cash Equivalent [Member] | Investment funds [member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 84 71
Cash And Cash Equivalent [Member] | Investment funds [member] | Level 3 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets
Cash And Cash Equivalent [Member] | Investment funds [member] | Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets  
Cash And Cash Equivalent [Member] | Assets Classified As Held For Sale [Member] | Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets [1]   100
Other Receivables [Member]    
IfrsStatementLineItems [Line Items]    
Total assets 30 3
Other Receivables [Member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 30 3
Other Receivables [Member] | Level 3 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets
Assets Classified As Held For Sale [Member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets [1]   13
Assets Classified As Held For Sale [Member] | Level 3 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets [1]  
[1] Corresponds to the net assets and liabilities held for sale corresponding to divestment in the stake in Edenor.