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Performance B.6.3 Deferred tax (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Beginning of period $ (34,000,000) $ (12,000,000)  
(Charge)/credit to income statement 52,000,000 (3,000,000)  
Change in scope   (6,000,000)  
Charge to Other Comprehensive Income 1,000,000 1,000,000  
Exchange differences (11,000,000) (12,000,000)  
Transfers to Assets Held for Sale (48,000,000)    
End of period 56,000,000 (34,000,000)  
Deferred tax assets (204,000,000) (180,000,000) [1] $ (197,000,000)
Deferred tax liabilities 148,000,000 214,000,000 [1] 209,000,000
Deductible temporary differences 5,696,000,000 5,076,000,000  
Unrecognized tax losses 5,535,000,000 4,856,000,000 4,668,000,000
Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities have not been recognised 640,000,000    
Deferred tax assets, intragroup dividends 25,000,000 26,000,000 11,000,000
Offset      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Deferred tax assets (31,000,000) (235,000,000) (189,000,000)
Deferred tax liabilities 31,000,000 235,000,000 189,000,000
Fixed assets      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Beginning of period (130,000,000) (142,000,000)  
(Charge)/credit to income statement 29,000,000 23,000,000  
Change in scope   (9,000,000)  
Charge to Other Comprehensive Income 0 0  
Exchange differences 0 (2,000,000)  
Transfers to Assets Held for Sale (57,000,000)    
End of period (44,000,000) (130,000,000)  
Deductible temporary differences 90,000,000 117,000,000  
Fixed assets | Before Offset      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Deferred tax assets (109,000,000) (97,000,000) (97,000,000)
Deferred tax liabilities 153,000,000 227,000,000 239,000,000
Unused tax losses      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Beginning of period 156,000,000 187,000,000  
(Charge)/credit to income statement (131,000,000) (27,000,000)  
Change in scope   0  
Charge to Other Comprehensive Income 0 0  
Exchange differences (3,000,000) (4,000,000)  
Transfers to Assets Held for Sale 0    
End of period 22,000,000 156,000,000  
Deductible temporary differences 5,535,000,000 4,856,000,000  
Unused tax losses | Before Offset      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Deferred tax assets (22,000,000) (156,000,000) (187,000,000)
Deferred tax liabilities 0 0 0
Unremitted earnings      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Beginning of period (26,000,000) (11,000,000)  
(Charge)/credit to income statement 1,000,000 (15,000,000)  
Change in scope   0  
Charge to Other Comprehensive Income 0 0  
Exchange differences 0 0  
Transfers to Assets Held for Sale 0    
End of period (25,000,000) (26,000,000)  
Deferred tax liabilities 0 725,000,000 621,000,000
Unremitted earnings | Before Offset      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Deferred tax assets 0 0 0
Deferred tax liabilities 25,000,000 26,000,000 11,000,000
Other      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Beginning of period (34,000,000) (46,000,000)  
(Charge)/credit to income statement 153,000,000 16,000,000  
Change in scope   3,000,000  
Charge to Other Comprehensive Income 1,000,000 1,000,000  
Exchange differences (8,000,000) (6,000,000)  
Transfers to Assets Held for Sale 9,000,000    
End of period 103,000,000 (34,000,000)  
Deductible temporary differences 71,000,000 103,000,000  
Other | Before Offset      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Deferred tax assets (104,000,000) (162,000,000) (102,000,000)
Deferred tax liabilities 1,000,000 196,000,000 148,000,000
Less than 1 year      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Unrecognized tax losses 0 1,000,000 3,000,000
1 to 5 years      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Unrecognized tax losses 3,000,000 2,000,000 3,000,000
After five years      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Unrecognized tax losses 1,598,000,000 1,232,000,000 1,089,000,000
No expiry      
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Unrecognized tax losses $ 3,934,000,000 $ 3,621,000,000 $ 3,573,000,000
[1] Restated after the finalization of the Guatemala purchase accounting. See note A.1.2. for further details.