v3.25.4
Financial Instruments - Reconciliation of Movements of Liabilities to Cash Flows Arising from Financing Activities (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of reconciliation of liabilities arising from financing activities [Line Items]    
Balance at beginning of year $ 3,097 $ 3,477
Repayments of debt (999) (290)
Proceeds from commercial paper 3,257 3,280
Repayments of commercial paper (2,967) (3,420)
Payments of lease principal (64) (63)
Additional Leases 52 52
Acquisitions 1 54
Interest fair value movements 7  
Foreign exchange movements 7 (10)
Other, net (3) 17
Balance at end of year 2,388 3,097
Notes and Debentures [Member]    
Disclosure of reconciliation of liabilities arising from financing activities [Line Items]    
Balance at beginning of year 2,820 3,147
Repayments of debt (1,000) (290)
Proceeds from commercial paper   0
Repayments of commercial paper   0
Payments of lease principal   0
Additional Leases   0
Acquisitions   48
Interest fair value movements (14)  
Foreign exchange movements 27 (88)
Other, net (5) 3
Balance at end of year 1,828 2,820
Commercial Paper [Member]    
Disclosure of reconciliation of liabilities arising from financing activities [Line Items]    
Balance at beginning of year 0 130
Repayments of debt   0
Proceeds from commercial paper 3,257 3,280
Repayments of commercial paper (2,967) (3,420)
Payments of lease principal   0
Additional Leases   0
Acquisitions   0
Foreign exchange movements   0
Other, net 5 10
Balance at end of year 295 0
Derivative Instruments (Assets) Liabilities [Member]    
Disclosure of reconciliation of liabilities arising from financing activities [Line Items]    
Balance at beginning of year 21 (65)
Repayments of debt (1) 0
Proceeds from commercial paper   0
Repayments of commercial paper   0
Payments of lease principal   0
Additional Leases   0
Acquisitions   0
Interest fair value movements 21  
Foreign exchange movements (27) 88
Other, net   (2)
Balance at end of year 16 21
Leases Liabilities [Member]    
Disclosure of reconciliation of liabilities arising from financing activities [Line Items]    
Balance at beginning of year 256 265
Repayments of debt   0
Proceeds from commercial paper   0
Repayments of commercial paper   0
Payments of lease principal (64) (63)
Additional Leases 52 52
Acquisitions 1 6
Foreign exchange movements 7 (10)
Other, net (3) 6
Balance at end of year $ 249 $ 256