Derivative Instruments and Hedging Activities - Offsetting Assets (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative assets
Derivative assets, gross amount	$ 4,500	$ 2,690
Derivative assets, offsetting financial instruments	(485)	(252)
Derivative assets, offsetting cash collateral	(582)	(290)
Total derivative assets	3,433	2,148
Derivative assets, securities not netted	0	0
Net Exposure	3,433	2,148
Derivative, collateral, obligation to return cash	725	377
Derivative, collateral, obligation to return securities	28	1
Derivative, collateral, right to reclaim cash	$ 4,300	$ 2,000