Pensions and Post-Employment Benefits - Schedule of Estimated Payments for Pensions and Other Post-Employment Benefits (Detail) $ in Millions	12 Months Ended
Dec. 31, 2024 USD ($)
Disclosure - Pensions and Post-Employment Benefits - Schedule of Estimated Payments for Pensions and Other Post-Employment Benefits [Abstract]
2025	$ 156
2026	135
2027	133
2028	133
2029 – 2034	$ 803

Disclosure - Pensions and Post-Employment Benefits - Schedule of Estimated Payments for Pensions and Other Post-Employment Benefits [Abstract]

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Estimated payments for pensions and other post employment benefits due in next twelve months.

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Estimated payments for pensions and other post employment benefits due in year four.

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Estimated payments for pensions and other post employment benefits due in year three.

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Estimated payments for pensions and other post employment benefits due in year two.

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Estimated Payments For Pensions And Other Post employment Benefits Due In Years Five To Ten

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