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Employee Benefits (Movement in Net Defined Benefit Assets Liabilities and in their Components) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Movement in net defined benefit assets (liabilities) [Line Items]    
Balance as at the begining of the year $ 453  
Other movements:    
Balance as at the end of the year 444 $ 453
Fair value of plan assets [Member]    
Movement in net defined benefit assets (liabilities) [Line Items]    
Balance as at the begining of the year 453 432
Income (costs) included in profit or loss:    
Current service costs 0 0
Interest income (expenses) 21 20
Past service cost 0 0
Effect of movements in exchange rates, net (1) (6)
Included in other comprehensive income:    
Actuarial profits (losses) deriving from changes in financial assumptions 0 0
Other actuarial gains (5) 8
Change with respect to translation differences, net (6) 12
Other movements:    
Benefits received (paid) (24) (19)
Employer contribution 6 6
Balance as at the end of the year 444 453
Defined benefit obligation [Member]    
Movement in net defined benefit assets (liabilities) [Line Items]    
Balance as at the begining of the year (653) (664)
Income (costs) included in profit or loss:    
Current service costs (13) (15)
Interest income (expenses) (31) (31)
Past service cost 1 (1)
Effect of movements in exchange rates, net 2 10
Included in other comprehensive income:    
Actuarial profits (losses) deriving from changes in financial assumptions 38 24
Other actuarial gains 0 0
Change with respect to translation differences, net 11 (15)
Other movements:    
Benefits received (paid) 40 39
Employer contribution 0 0
Balance as at the end of the year (605) (653)
Defined benefit obligation, net [Member]    
Movement in net defined benefit assets (liabilities) [Line Items]    
Balance as at the begining of the year (200) (232)
Income (costs) included in profit or loss:    
Current service costs (13) (15)
Interest income (expenses) (10) (11)
Past service cost 1 (1)
Effect of movements in exchange rates, net 1 4
Included in other comprehensive income:    
Actuarial profits (losses) deriving from changes in financial assumptions 38 24
Other actuarial gains (5) 8
Change with respect to translation differences, net 5 (3)
Other movements:    
Benefits received (paid) 16 20
Employer contribution 6 6
Balance as at the end of the year $ (161) $ (200)