v3.26.1
Payroll, staff and employee benefits obligations - Expected future cash outflows (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
Pension benefits  
Employee benefits obligations  
Weighted average duration of accrued benefits 10 years
Expected contributions in respect of funded pension plans in 2020 $ 119
Pension benefits | Not later than one year  
Employee benefits obligations  
Estimated future payments 607
Pension benefits | Year 2  
Employee benefits obligations  
Estimated future payments 630
Pension benefits | Year 3  
Employee benefits obligations  
Estimated future payments 648
Pension benefits | Year 4  
Employee benefits obligations  
Estimated future payments 635
Pension benefits | Year 5  
Employee benefits obligations  
Estimated future payments 613
Pension benefits | Year 6 through 10  
Employee benefits obligations  
Estimated future payments $ 3,548
Other benefits  
Employee benefits obligations  
Weighted average duration of accrued benefits 14 years
Other benefits | Not later than one year  
Employee benefits obligations  
Estimated future payments $ 23
Other benefits | Year 2  
Employee benefits obligations  
Estimated future payments 23
Other benefits | Year 3  
Employee benefits obligations  
Estimated future payments 22
Other benefits | Year 4  
Employee benefits obligations  
Estimated future payments 22
Other benefits | Year 5  
Employee benefits obligations  
Estimated future payments 23
Other benefits | Year 6 through 10  
Employee benefits obligations  
Estimated future payments $ 112