Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Realized and unrealized gains (losses) on financial instruments        
Realized and unrealized gains (losses) on financial instruments $ 19 $ 23 $ 60 $ (115)
Change in fair value of exchangeable senior debentures realized gain 24 (90) (44) 129
Cumulative amount of gain in change in fair value 149   149  
Equity securities        
Realized and unrealized gains (losses) on financial instruments        
Realized and unrealized gains (losses) on financial instruments 43   50 (4)
Exchangeable senior debentures        
Realized and unrealized gains (losses) on financial instruments        
Realized and unrealized gains (losses) on financial instruments (179) (30) (133) (80)
Indemnification asset        
Realized and unrealized gains (losses) on financial instruments        
Realized and unrealized gains (losses) on financial instruments 93 35 41 13
Other Financial Instruments        
Realized and unrealized gains (losses) on financial instruments        
Realized and unrealized gains (losses) on financial instruments $ 62 $ 18 $ 102 $ (44)