Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Offsetting [Abstract]
Derivative assets, gross amounts of recognized assets/liabilities	$ 12	$ 33
Gross amounts offset on the Condensed Consolidated Balance Sheet	0	0
Total assets, net amount	12	33
Financial instruments	0	0
Gross amounts not offset on the Condensed Consolidated Balance Sheet	(9)	(31)
Total assets	3	2
Derivative liabilities, gross amounts of recognized assets/liabilities	11	17
Gross amounts offset on the Condensed Consolidated Balance Sheet	0	0
Net amounts of assets/liabilities presented on the Condensed Consolidated Balance Sheet	11	17
Derivative liabilities, gross amounts not offset on the condensed consolidated balance sheet, financial instruments	0	0
Derivative liabilities in net liability positions	0	(6)
Net amount	11	11
Securities sold under agreements to repurchase		747
Derivative liabilities - gross amounts offset on the consolidated balance sheet		0
Securities sold under agreements to repurchase		747
Security sold under agreement to repurchase, gross amounts not offset on the condensed consolidated balance sheet, financial instruments		0
Security sold under agreement to repurchase, subject to master netting arrangement, collateral, right to reclaim cash not offset		(747)
Securities sold under agreements to repurchase, offset against collateral, net of not subject to master netting arrangement, policy election		0
Gross amounts of recognized assets/liabilities	11	764
Gross amounts offset on the Condensed Consolidated Balance Sheet	0	0
Fair value of derivative contracts in payable position	11	764
Financial instruments	0	0
Securities sold under agreements to repurchase, securities loaned, collateral, right to reclaim cash	0	(753)
Security sold under agreement to repurchase, and security loaned, including not subject to master netting arrangement, after offset and deduction	11	11
Derivative assets with no offsetting arrangements	2	2
Derivative liabilities with no offsetting arrangements	$ 10	$ 10
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other liabilities