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Pensions and Post-Employment Benefits - Schedule Actuarial Results Related to Pension and Other Post Retirement Benefits (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Recorded in operating costs and expenses      
Service cost $ 11 $ 12 $ 12
Past service cost 0 1 0
Settlements, curtailments and other changes (11) 0 (2)
Total defined benefit expense 0 13 10
Recorded in other financial expenses      
Net interest cost 44 29 31
Recorded in other comprehensive income      
Actuarial losses (gains) for the period 45 (176) (263)
Total (loss) / gain recognized during the period 89 (134) (222)
Pension defined benefit plans [member]      
Recorded in operating costs and expenses      
Service cost 7 8 9
Past service cost 0 1 0
Settlements, curtailments and other changes (10) 0 (1)
Total defined benefit expense (3) 9 8
Recorded in other financial expenses      
Net interest cost 36 23 26
Recorded in other comprehensive income      
Actuarial losses (gains) for the period 46 (166) (257)
Total (loss) / gain recognized during the period 79 (134) (223)
Other Benefits Plans [Member]      
Recorded in operating costs and expenses      
Service cost 4 4 3
Past service cost 0 0 0
Settlements, curtailments and other changes (1) 0 (1)
Total defined benefit expense 3 4 2
Recorded in other financial expenses      
Net interest cost 8 6 5
Recorded in other comprehensive income      
Actuarial losses (gains) for the period (1) (10) (6)
Total (loss) / gain recognized during the period $ 10 $ 0 $ 1