XML 126 R90.htm IDEA: XBRL DOCUMENT v3.25.0.1
Investments - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Debt and Equity Securities, FV-NI [Line Items]      
Change in fair value $ (1) $ 2 $ (4)
Debt securities, realized gain (loss) 1 1 0
Available-for-sale securities      
Debt and Equity Securities, FV-NI [Line Items]      
Change in fair value $ 4 $ 1 $ (1)