v3.26.1
Trade and other payables - Movement in the sales rebates and reserves (Details)
$ in Millions
6 Months Ended
Jun. 30, 2026
USD ($)
Disclosure of subsidiaries [line items]  
Sales rebates and reserves. beginning balance $ 402
Current estimate related to the sales made in the current period 736
Adjustment for prior year sales (45)
Credits or payments (651)
Foreign currency translation differences (1)
Sales rebates and reserves, ending balance 441
Rebates and chargebacks  
Disclosure of subsidiaries [line items]  
Sales rebates and reserves. beginning balance 368
Current estimate related to the sales made in the current period 628
Adjustment for prior year sales (44)
Credits or payments (551)
Foreign currency translation differences (1)
Sales rebates and reserves, ending balance 400
Distribution fees and product returns  
Disclosure of subsidiaries [line items]  
Sales rebates and reserves. beginning balance 34
Current estimate related to the sales made in the current period 108
Adjustment for prior year sales 0
Credits or payments (101)
Foreign currency translation differences 0
Sales rebates and reserves, ending balance $ 41