Fixed Assets - Summary of Fixed Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Fixed assets gross	$ 29,573	$ 29,965
Less: Accumulated depreciation	22,214	22,725
Fixed assets less accumulated depreciation	7,359	7,240
Land
Property Plant And Equipment [Line Items]
Fixed assets gross	315	323
Buildings & improvements
Property Plant And Equipment [Line Items]
Fixed assets gross	4,510	4,569
Machinery & equipment
Property Plant And Equipment [Line Items]
Fixed assets gross	$ 24,748	$ 25,073

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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