Fair Values - Detail of Loans and Lending Commitments at Fair Value (Details) - Loans and lending commitments - Recurring - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Fair Value Measurements
Trading assets	$ 12,490	$ 12,627
Corporate
Fair Value Measurements
Trading assets	8	8
Commercial real estate
Fair Value Measurements
Trading assets	1,407	863
Residential real estate
Fair Value Measurements
Trading assets	3,085	3,911
Securities-based lending and Other loans
Fair Value Measurements
Trading assets	$ 7,990	$ 7,845