Derivatives - Offsetting Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Offsetting
Derivative liability, subject to master netting arrangement, before offset	$ 139	$ 142
Derivative liability, subject to master netting arrangement, asset offset	19	40
Derivative liability, subject to master netting arrangement, collateral, right to reclaim cash not offset	0	0
Derivative liability, fair value, offset against collateral, net of not subject to master netting arrangement, policy election	120	102
Derivative liability, not subject to master netting arrangement	0	0
Derivative liability, not subject to master netting arrangement deduction	0	0
Gross amount of derivative liabilities presented in consolidated balance sheet including not subject to master netting arrangement	139	142
Net amount of derivative liabilities, including not subject to master netting arrangements	$ 120	$ 102