Derivative Instruments and Hedging Activities - Offsetting Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Derivative liabilities
Derivative liabilities, gross amount	$ 6,175	$ 1,868
Derivative liabilities, offsetting financial instruments	(691)	(252)
Derivative liabilities, offsetting cash collateral	(889)	(292)
Total derivative liabilities	4,595	1,324
Derivative liabilities, securities collateral not netted	(87)	0
Net exposure	4,508	1,324
Repurchase agreements
Gross amounts	528	820
Repurchase agreements, securities sold, offset	0	0
Repurchase agreements, cash collateral pledged, offset	0	0
Net amounts as recognized	528	820
Repurchase agreements, securities collateral not netted	(528)	(820)
Net exposure	0	0
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
Securities sold under repurchase agreements, fair value of collateral	$ 538	$ 836