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Property, Plant and Equipment -Summary of Property, Plant and Equipment owned and Leased assets (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment $ 22,998 $ 23,664
Property, plant and equipment owned [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment 20,867 21,368
Property, plant and equipment leased (right-of-use assets) [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment $ 2,131 $ 2,297