Fair Value Option - Borrowings Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Fair Value Measurements
Borrowings at fair value	$ 70,672	$ 76,340
Recurring
Fair Value Measurements
Borrowings at fair value	70,672	76,340
Recurring | Equity
Fair Value Measurements
Borrowings at fair value	35,253	37,046
Recurring | Interest rates
Fair Value Measurements
Borrowings at fair value	24,473	28,638
Recurring | Commodities
Fair Value Measurements
Borrowings at fair value	8,409	7,837
Recurring | Credit
Fair Value Measurements
Borrowings at fair value	1,349	1,347
Recurring | Foreign exchange
Fair Value Measurements
Borrowings at fair value	$ 1,188	$ 1,472