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 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net $ 380 $ 155 $ 439 $ 106
Debt and equity securities        
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net (7) 167 (12) 216
Debt measured at fair value        
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net 577 (71) 646 (184)
Gain (loss) on changes in fair value 52 (8) 41 (68)
Cumulative amount of gain in changes in fair value 109   109  
Change in fair value of bond hedges        
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net (201) 46 (269) 59
Other        
Assets and Liabilities Measured at Fair Value        
Realized and unrealized gains (losses) on financial instruments, net $ 11 $ 13 $ 74 $ 15