Fair value option - Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Assets of consolidated investment management funds:
Trading assets	$ 12,650	$ 16,577
Other assets	1,599	1,187
Liabilities of consolidated investment management funds:
Other liabilities	26	496
Investment Management funds
Assets of consolidated investment management funds:
Trading assets	206	443
Other assets	8	19
Total assets	214	462
Liabilities of consolidated investment management funds:
Other liabilities	1	3
Total liabilities	$ 1	$ 3