Annual report [Section 13 and 15(d), not S-K Item 405]

Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) (Details)

v3.26.1
Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments $ (40) $ (60) $ (61)
1.75% Exchangeable Senior Debentures due 2046      
Realized and unrealized gains (losses) on financial instruments      
Interest rate (as a percent)     1.75%
Equity securities      
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments (5) (22) $ (22)
Exchangeable senior debentures      
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments (35) (38) (33)
Indemnification asset      
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments 0 0 (5)
Other financial instruments      
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments $ 0 $ 0 $ (1)