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Long-Term Employee Benefit Liabilities - Future Benefit Payments (Detail)
$ in Millions
Dec. 31, 2024
USD ($)
Future Benefit Payments Plan Disclosure [Line Items]  
Expected employer contributions - 2025 $ 23
2025 43
2026 44
2027 46
2028 52
2029 56
Thereafter 330
Total 571
Pension Plan, Defined Benefit [Member]  
Future Benefit Payments Plan Disclosure [Line Items]  
Expected employer contributions - 2025 6
2025 26
2026 26
2027 27
2028 27
2029 28
Thereafter 150
Total 284
Termination and Long Service Arrangements [Member]  
Future Benefit Payments Plan Disclosure [Line Items]  
Expected employer contributions - 2025 16
2025 16
2026 17
2027 18
2028 24
2029 26
Thereafter 174
Total 275
Retirement Medical Benefits Plans [Member]  
Future Benefit Payments Plan Disclosure [Line Items]  
Expected employer contributions - 2025 1
2025 1
2026 1
2027 1
2028 1
2029 2
Thereafter 6
Total $ 12