Long-Term Debt - Notes Associated with Consolidated VIEs (Details) - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023
Debt Instrument
Long-term debt	[1]	$ 14,337	$ 16,380
2026		2,429
2028		2,621
Thereafter		4,620
Subsidiaries
Debt Instrument
Long-term debt		4,816
2026		2,429
2028		587
Thereafter		349
Variable Interest Entity, Primary Beneficiary | Subsidiaries | Automobile And Solar Loans | Fixed
Debt Instrument
Long-term debt		846
2026		169
2028		550
Thereafter		$ 127

[1] Includes $51 and $55 of other short-term investments, $1,000 and $1,573 of portfolio loans and leases, $(19) and $(28) of ALLL, $5 and $10 of other assets, $12 and $14 of other liabilities and $889 and $1,409 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2024 and 2023, respectively. For further information, refer to Note 12.