XML 121 R88.htm IDEA: XBRL DOCUMENT v3.20.4
Employee Benefits (Movement in Net Defined Benefit Assets Liabilities and in their Components) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Movement in net defined benefit assets (liabilities) [Line Items]    
Balance as at the begining of the year $ 583  
Other movements [Abstract]    
Balance as at the end of the year 629 $ 583
Fair value of plan assets [Member]    
Movement in net defined benefit assets (liabilities) [Line Items]    
Balance as at the begining of the year 583 518
Income (costs) included in profit or loss [Abstract]    
Current service costs 0 0
Interest income (expenses) 5 15
Past service cost 0 0
Effect of movements in exchange rates, net 16 17
Included in other comprehensive income [Abstract]    
Actuarial gains (losses) deriving from changes in financial assumptions 0 0
Other actuarial gains (losses) 9 46
Change with respect to translation differences ,net 18 9
Other movements [Abstract]    
Benefits paid (6) (32)
Employer contribution 4 10
Balance as at the end of the year 629 583
Defined benefit obligation [Member]    
Movement in net defined benefit assets (liabilities) [Line Items]    
Balance as at the begining of the year (1,004) (860)
Income (costs) included in profit or loss [Abstract]    
Current service costs (22) (21)
Interest income (expenses) (14) (27)
Past service cost 11 5
Effect of movements in exchange rates, net (34) (31)
Included in other comprehensive income [Abstract]    
Actuarial gains (losses) deriving from changes in financial assumptions (24) (121)
Other actuarial gains (losses) 0 0
Change with respect to translation differences ,net (32) (4)
Other movements [Abstract]    
Benefits paid 44 55
Employer contribution 0 0
Balance as at the end of the year (1,075) (1,004)
Defined benefit obligation, net [Member]    
Movement in net defined benefit assets (liabilities) [Line Items]    
Balance as at the begining of the year (421) (342)
Income (costs) included in profit or loss [Abstract]    
Current service costs (22) (21)
Interest income (expenses) (9) (12)
Past service cost 11 5
Effect of movements in exchange rates, net (18) (14)
Included in other comprehensive income [Abstract]    
Actuarial gains (losses) deriving from changes in financial assumptions (24) (121)
Other actuarial gains (losses) 9 46
Change with respect to translation differences ,net (14) 5
Other movements [Abstract]    
Benefits paid 38 23
Employer contribution 4 10
Balance as at the end of the year $ (446) $ (421)