Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Operating Leases:
Operating lease right-of-use assets	$ 426	$ 119
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating lease liabilities	$ 446	$ 122
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Weighted average remaining lease term	11 years 2 months 12 days	6 years
Weighted average discount rate percent	4.71%	3.85%