v3.25.2
Financial instruments - Summary of Accounting Classification and Fair Values (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Dec. 31, 2023
Disclosure of detailed information about financial instruments [line items]        
Financial assets $ 9,026 $ 7,381    
Financial assets, at fair value 1,006 929    
Financial liabilities (4,496) (2,654)    
Financial liabilities, at fair value (651) (157)    
Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,479)      
Financial liabilities, at fair value (479)      
Bank loans        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (253) (206)    
Lease liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (181) (158)    
Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (10) (11)    
Financial liabilities, at fair value (10) (11)    
Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,030) (1,054)    
Financial liabilities, at fair value (162) (146)    
Deposits from customers in the banking business        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,543) (1,225)    
FVTPL        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (489) (16)    
FVTPL | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (479)      
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 (10) (11)    
FVTPL | Trade payables and other liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 0 (5)    
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 (162) (141)    
FVOCI | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities 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 (162) (141)    
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 (3,845) (2,497)    
Amortized cost | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,000)      
Amortized cost | Bank loans        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (253) (206)    
Amortized cost | Lease liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (181) (158)    
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 (868) (908)    
Amortized cost | Deposits from customers in the banking business        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities (1,543) (1,225)    
Level 1        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 280 354    
Financial liabilities, at fair value (10) (11)    
Level 1 | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value 0      
Level 1 | Warrant liabilities        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value (10) (11)    
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 503 342    
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      
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 $ 86 $ 98
Financial assets, at fair value 223 233    
Financial liabilities (418)      
Financial liabilities, at fair value (641) (146)    
Level 3 | Convertible notes        
Disclosure of detailed information about financial instruments [line items]        
Financial liabilities, at fair value (479)      
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 (162) (146)    
Debt investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 2,039 1,525    
Financial assets, at fair value 792 701    
Debt investments | Level 1        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 174 268    
Debt investments | Level 2        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 502 321    
Debt investments | Level 3        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 116 112    
Equity investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 213 207    
Financial assets, at fair value 213 207    
Equity investments | Level 1        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 106 86    
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 107 121    
Time deposits        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 1,714 1,698    
Trade and other receivables        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 262 206    
Loan receivables in the financial services segment        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 708 536    
Other assets        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 210 245    
Financial assets, at fair value 1 21    
Other assets | Level 1        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 0 0    
Other assets | Level 2        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 1 21    
Other assets | Level 3        
Disclosure of detailed information about financial instruments [line items]        
Financial assets, at fair value 0 0    
Cash and cash equivalents        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 3,880 2,964    
FVTPL        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 898 662    
FVTPL | Debt investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 684 434    
FVTPL | Equity investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 213 207    
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 21    
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 108 267    
FVOCI | Debt investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 108 267    
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 8,020 6,452    
Amortized cost | Debt investments        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 1,247 824    
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 1,714 1,698    
Amortized cost | Trade and other receivables        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 262 206    
Amortized cost | Loan receivables in the financial services segment        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 708 536    
Amortized cost | Other assets        
Disclosure of detailed information about financial instruments [line items]        
Financial assets 209 224    
Amortized cost | Cash and cash equivalents        
Disclosure of detailed information about financial instruments [line items]        
Financial assets $ 3,880 $ 2,964