Derivatives - Derivative Liabilities and Collateral Pledged (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Gross amounts of recognized liabilities	$ 578	$ 103
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	578	103
Derivative assets  available for offset	(27)	(36)
Collateral pledged	(175)	(39)
Net amount	376	28
Derivative liabilities not subject to master netting agreements	28	24
Interest rate derivative contracts
Derivative [Line Items]
Gross amounts of recognized liabilities	557	93
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	557	93
Derivative assets  available for offset	(15)	(32)
Collateral pledged	(167)	(38)
Net amount	375	23
Forward contracts
Derivative [Line Items]
Gross amounts of recognized liabilities	21	10
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	21	10
Derivative assets  available for offset	(12)	(4)
Collateral pledged	(8)	(1)
Net amount	$ 1	$ 5