Derivatives - Derivative Liabilities and Collateral Pledged (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Gross amounts of recognized liabilities	$ 1,027	$ 103
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	1,027	103
Derivative assets  available for offset	(65)	(36)
Collateral pledged	(190)	(39)
Net amount	772	28
Derivative liabilities not subject to master netting agreements	21	24
Interest rate derivative contracts
Derivative [Line Items]
Gross amounts of recognized liabilities	988	93
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	988	93
Derivative assets  available for offset	(54)	(32)
Collateral pledged	(180)	(38)
Net amount	754	23
Forward contracts
Derivative [Line Items]
Gross amounts of recognized liabilities	39	10
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	39	10
Derivative assets  available for offset	(11)	(4)
Collateral pledged	(10)	(1)
Net amount	$ 18	$ 5