Quarterly report pursuant to Section 13 or 15(d)

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

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Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) on Financial Instruments (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net $ 106 $ (40) $ 545 $ 66
Debt and equity securities        
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net 2 (6) (10) 210
Debt measured at fair value        
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net 45 (57) 691 (241)
Gain (loss) on changes in fair value (41) (46) 0 (114)
Cumulative amount of gain in changes in fair value 68   68  
Change in fair value of bond hedges        
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net 21 18 (248) 77
Other        
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net $ 38 $ 5 $ 112 $ 20