v3.25.4
Fair Value Hierarchy - Investments, Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net realized gains/(losses) $ 19 $ (8)
Investments    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net realized gains/(losses) 373 342
Net unrealized gains/(losses) 186 (287)
Investments | Operating income (loss)    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net realized gains/(losses) 287 (224)
Investments | Interest income    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net realized gains/(losses) 272 279
Investments | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net realized gains/(losses) $ 559 $ 55