Short-Term Borrowings and Long-Term Debt - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Debt Instrument [Line Items]
FHLB advances borrowing capacity	$ 7,600
Repayments of borrowing	4,500
Junior Subordinated Debt
Debt Instrument [Line Items]
Repayments of subordinated debt	$ 117