Derivative Instruments and Hedging Activities - Offsetting Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Derivative assets
Derivative assets, gross amount	$ 4,807	$ 2,690
Derivative assets, offsetting financial instruments	(691)	(252)
Derivative assets, offsetting cash collateral	(954)	(290)
Total derivative assets	3,162	2,148
Derivative assets, securities not netted	(80)	0
Net Exposure	3,082	2,148
Derivative, collateral, obligation to return cash	1,100	377
Derivative, collateral, obligation to return securities	67	1
Derivative, collateral, right to reclaim cash	$ 3,500	$ 2,000