v3.26.1
Financial instruments - Summary of Reconciliation from the Opening Balances to the Ending Balances (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Equity and debt investments    
Financial assets at beginning of period $ 9,493  
Financial assets at end of period 10,477  
Put options issued to non-controlling interests    
Financial liabilities at the beginning of the period (4,934)  
Financial liabilities at the end of the period (5,977)  
Level 3    
Equity and debt investments    
Financial assets at beginning of period   $ 87
- Gain included in profit or loss 61 5
Net purchases 148  
Transfer between Level 3 and Level 1   (22)
Put options issued to non-controlling interests    
Financial liabilities at the beginning of the period (340)  
- Gain included in OCI 4 (6)
Net purchases   482
Financial liabilities at the end of the period (127) (418)
Level 3 | Put options issued to non-controlling interests    
Put options issued to non-controlling interests    
Financial liabilities at the beginning of the period (148) (146)
- Gain/(loss) included in profit or loss (90) 0
- Gain included in OCI 4 (6)
Net purchases 0 10
Transfer between Level 3 and Level 1   0
Financial liabilities at the end of the period (234) (162)
Level 3 | Embedded derivative of the Convertible Notes    
Put options issued to non-controlling interests    
Financial liabilities at the beginning of the period (460) 0
- Gain/(loss) included in profit or loss 150 3
- Gain included in OCI 0 0
Net purchases 0 482
Transfer between Level 3 and Level 1   0
Financial liabilities at the end of the period (310) (479)
Equity and debt investments | Level 3    
Equity and debt investments    
Financial assets at beginning of period 268 233
- Gain included in profit or loss 1 2
- Loss included in OCI 0 0
Net purchases 148 10
Transfer between Level 3 and Level 1   (22)
Financial assets at end of period $ 417 $ 223