v3.26.1
Financial instruments - Summary of Accounting Classification and Fair Values (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]        
Financial assets $ 10,477 $ 9,493    
Financial assets, at fair value 3,364 1,866    
Financial liabilities (5,977) (4,934)    
Financial liabilities, at fair value (545) (616)    
Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,395) (1,502)    
Financial liabilities, at fair value (310) (460)    
Bank loans        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (374) (317)    
Lease liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (264) (234)    
Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1) (8)    
Financial liabilities, at fair value (1) (8)    
Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,430) (1,244)    
Financial liabilities, at fair value (234) (148)    
Deposits from customers in the banking business        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (2,513) (1,629)    
FVTPL        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (500) (567)    
FVTPL | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (310) (460)    
FVTPL | Bank loans        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
FVTPL | Lease liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
FVTPL | Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1) (8)    
FVTPL | Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (189) (99)    
FVTPL | Deposits from customers in the banking business        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
FVOCI        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (45) (49)    
FVOCI | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
FVOCI | Bank loans        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
FVOCI | Lease liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
FVOCI | Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
FVOCI | Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (45) (49)    
FVOCI | Deposits from customers in the banking business        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
Amortized cost        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (5,432) (4,318)    
Amortized cost | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,085) (1,042)    
Amortized cost | Bank loans        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (374) (317)    
Amortized cost | Lease liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (264) (234)    
Amortized cost | Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 0    
Amortized cost | Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,196) (1,096)    
Amortized cost | Deposits from customers in the banking business        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (2,513) (1,629)    
Level 1        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 998 426    
Financial liabilities, at fair value (1) (8)    
Level 1 | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value 0 0    
Level 1 | Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value (1) (8)    
Level 1 | Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value 0 0    
Level 2        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 1,949 1,172    
Financial liabilities, at fair value 0 0    
Level 2 | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value 0 0    
Level 2 | Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value 0 0    
Level 2 | Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value 0 0    
Level 3        
Disclosure of detailed information about financial instruments [line items]        
Financial assets       $ 87
Financial assets, at fair value 417 268    
Financial liabilities (127) (340) $ (418)  
Financial liabilities, at fair value (544) (608)    
Level 3 | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value (310) (460)    
Level 3 | Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value 0 0    
Level 3 | Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value (234) (148)    
Debt investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 3,590 2,447    
Financial assets, at fair value 3,091 1,476    
Debt investments | Level 1        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 882 182    
Debt investments | Level 2        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 1,948 1,172    
Debt investments | Level 3        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 261 122    
Equity investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 272 390    
Financial assets, at fair value 272 390    
Equity investments | Level 1        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 116 244    
Equity investments | Level 2        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 0 0    
Equity investments | Level 3        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 156 146    
Time deposits        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 1,055 1,557    
Trade and other receivables        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 249 240    
Loan receivables in the financial services segment        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 2,165 1,180    
Other assets        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 287 246    
Financial assets, at fair value 1      
Other assets | Level 1        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 0      
Other assets | Level 2        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 1      
Other assets | Level 3        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 0      
Cash and cash equivalents        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 2,859 3,433    
FVTPL        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 2,125 1,712    
FVTPL | Debt investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 1,852 1,322    
FVTPL | Equity investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 272 390    
FVTPL | Time deposits        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVTPL | Trade and other receivables        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVTPL | Loan receivables in the financial services segment        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVTPL | Other assets        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 1 0    
FVTPL | Cash and cash equivalents        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVOCI        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 1,239 154    
FVOCI | Debt investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 1,239 154    
FVOCI | Equity investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVOCI | Time deposits        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVOCI | Trade and other receivables        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVOCI | Loan receivables in the financial services segment        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVOCI | Other assets        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
FVOCI | Cash and cash equivalents        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
Amortized cost        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 7,113 7,627    
Amortized cost | Debt investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 499 971    
Amortized cost | Equity investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 0 0    
Amortized cost | Time deposits        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 1,055 1,557    
Amortized cost | Trade and other receivables        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 249 240    
Amortized cost | Loan receivables in the financial services segment        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 2,165 1,180    
Amortized cost | Other assets        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 286 246    
Amortized cost | Cash and cash equivalents        
Disclosure of detailed information about financial instruments [line items]        
Financial assets $ 2,859 $ 3,433