Fair Value Option - Borrowings Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Fair Value Measurements
Borrowings at fair value	$ 68,788	$ 76,340
Recurring
Fair Value Measurements
Borrowings at fair value	68,788	76,340
Recurring | Equity
Fair Value Measurements
Borrowings at fair value	34,226	37,046
Recurring | Interest rates
Fair Value Measurements
Borrowings at fair value	22,896	28,638
Recurring | Commodities
Fair Value Measurements
Borrowings at fair value	9,147	7,837
Recurring | Credit
Fair Value Measurements
Borrowings at fair value	1,220	1,347
Recurring | Foreign exchange
Fair Value Measurements
Borrowings at fair value	$ 1,299	$ 1,472