Pledged Assets and Collateral - Schedule of Pledged Assets (Details) - USD ($) $ in Billions	Jun. 30, 2022	Dec. 31, 2021
Pledged assets and Collateral
Assets that may be sold or repledged or otherwise used by secured parties	$ 123.5	$ 126.3
Assets that may not be sold or repledged or otherwise used by secured parties	86.1	112.0
Total pledged assets	729.3	714.7
Assets pledged at Federal Reserve banks and FHLBs
Pledged assets and Collateral
Total pledged assets	$ 519.7	$ 476.4