Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Borrowings	$ 3,985,000	$ 906,175
Line of Credit Facility, Maximum Borrowing Capacity	35,000
Short-Term Debt	$ 35,000
Short-Term Debt Interest Rate	7.83%
Advance from Federal Home Loan Bank	$ 4,000,000
FHLB
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	8,000,000
FRB
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	1,700,000
Federal funds with additional financial institutions
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	600,000
FRB Bank Team Funding Program
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,000,000
Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB Advances Fixed Interest Rates	5.64%
Minimum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB Advances Fixed Interest Rates	5.42%

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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