v3.25.2
Going concern (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Going Concern [Abstract]        
Equity $ 6,361 $ 6,343 $ 6,351 $ 6,468
Net income/ (loss) for the period 30 $ (184)    
Deposits with banks and financial institutions $ 6,645