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Tax charge - Provision for open tax matters (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Movements in provisions for open tax matters  
Provision for open tax matters at beginning of period $ (93)
Movements in the current period included in tax charge attributable to shareholders (8)
Provisions utilised in the period 13
Other movements (including interest arising on open tax matters and amounts included in the Group's share of profits from joint ventures and associates, net of related tax) (7)
Provision for open tax matters at end of period $ (95)