Other Assets - Summary (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Other Assets [Abstract]
Goodwill	$ 4,872	$ 4,187	$ 3,851
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Right-of-use lease assets	$ 998	$ 804
Other intangible assets, at amortized cost	90	123
Other	18,302	16,065
Total	$ 24,263	$ 21,179