Annual report pursuant to Section 13 and 15(d)

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

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Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments $ 41 $ 99 $ (110)
Change in fair value of exchangeable senior debentures realized gain 341 (44) 21
Cumulative amount of gain in change in fair value 489    
Equity securities      
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments 13 77 (1)
Exchangeable senior debentures      
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments 310 (130) (277)
Indemnification asset      
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments (273) (21) 143
Other Financial Instruments      
Realized and unrealized gains (losses) on financial instruments      
Realized and unrealized gains (losses) on financial instruments $ (9) $ 173 $ 25