Borrowed Funds (Borrowed Funds) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
2025	$ 18,131
2026	9,758
2027	7,964
2028	5,054
2029	4,539
2030 and thereafter	16,227
Total borrowed funds	$ 61,673	$ 72,737

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