Quarterly report [Sections 13 or 15(d)]

Fair Value Measurements - Schedule of Gains (Losses) on Financial Instruments (Details)

v3.25.3
Fair Value Measurements - Schedule of Gains (Losses) on Financial Instruments (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Total $ 3 $ 22 $ 7 $ 122
Loss on specific credit risk $ 1 16    
2.75% Exchangeable Senior Debentures | Senior Notes        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Stated interest rate (as a percent) 2.75%   2.75%  
Debt measured at fair value        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Total $ 3 22 $ 7 117
Loss on specific credit risk     7 30
Cumulative loss on credit risk 17   17  
Other        
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Total $ 0 $ 0 $ 0 $ 5