Investment Securities - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Summary of Investment Holdings [Line Items]
Accrued interest receivables on investment securities	$ 137	$ 131
Securities with a fair value, pledged as collateral	21,100	11,000
Unrealized losses	5,258	6,046
Non-rated Securities
Summary of Investment Holdings [Line Items]
Unrealized losses	$ 20	$ 42