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Intangibles - (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
IfrsStatementLineItems [Line Items]    
Balance at beginning of year $ 10,238 $ 9,011
Additions 183 149
Disposals (7) (9)
Amortization (144) (142)
Translation adjustment 731 439
Balance at end of year 11,001 9,448
Intangible assets and goodwill 11,001 9,448
Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Intangible assets and goodwill, cost 13,116 11,194
Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated amortization (2,115) (1,746)
Goodwill [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 3,189 3,208
Translation adjustment 151 63
Balance at end of year 3,340 3,271
Intangible assets and goodwill 3,340 3,271
Goodwill [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Intangible assets and goodwill, cost 3,340 3,271
Ifrs Concessions [Member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 6,434 5,223
Additions 167 132
Disposals (7) (9)
Amortization (123) (120)
Translation adjustment 530 341
Balance at end of year 7,001 5,567
Intangible assets and goodwill 7,001 5,567
Ifrs Concessions [Member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Intangible assets and goodwill, cost 8,601 6,846
Ifrs Concessions [Member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated amortization (1,600) (1,279)
Computer software [member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 87 86
Additions 13 17
Amortization (21) (22)
Translation adjustment 6 2
Balance at end of year 85 83
Intangible assets and goodwill 85 83
Computer software [member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Intangible assets and goodwill, cost 600 550
Computer software [member] | Accumulated depreciation, amortisation and impairment [member]    
IfrsStatementLineItems [Line Items]    
Accumulated amortization (515) (467)
Research And Development Project And Patents [Member]    
IfrsStatementLineItems [Line Items]    
Balance at beginning of year 528 494
Additions 3  
Translation adjustment 44 33
Balance at end of year 575 527
Intangible assets and goodwill 575 527
Research And Development Project And Patents [Member] | Gross carrying amount [member]    
IfrsStatementLineItems [Line Items]    
Intangible assets and goodwill, cost $ 575 $ 527