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Cash and Cash Equivalents and Investment Securities - Summary of Cash and Cash Equivalents and Investments in Short-Term Debt Securities (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Disclosure of detailed information about borrowings [abstract]        
Cash and bank accounts $ 4,628 $ 5,390    
Short-term bank deposits 3,030 6,248    
Cash and cash equivalents 7,658 11,638    
Bank overdrafts (29) (14)    
 Cash and cash equivalents in the statement of cash flows $ 7,629 $ 11,623 $ 7,146 $ 11,174