Derivatives - Derivative Assets And Collateral Received (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Gross amounts of recognized assets	$ 458	$ 323
Gross amounts offset in the Balance Sheets	0	0
Net amounts of assets presented in the Statements of Condition	458	323
Derivative liabilities available for offset	(64)	(36)
Collateral received	(380)	(184)
Net amount	14	103
Derivative assets not subject to master netting agreements	$ 2	$ 2
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivatives, interest rate contracts
Derivative [Line Items]
Gross amounts of recognized assets	$ 449	$ 311
Gross amounts offset in the Balance Sheets	0	0
Net amounts of assets presented in the Statements of Condition	449	311
Derivative liabilities available for offset	(58)	(32)
Collateral received	(378)	(181)
Net amount	13	98
Forward contracts
Derivative [Line Items]
Gross amounts of recognized assets	9	12
Gross amounts offset in the Balance Sheets	0	0
Net amounts of assets presented in the Statements of Condition	9	12
Derivative liabilities available for offset	(6)	(4)
Collateral received	(2)	(3)
Net amount	$ 1	$ 5