Borrowings (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
Borrowings	$ 3,950,000	$ 906,175
Loans and securities pledged to the FHLB	19,100,000
Outstanding federal funds purchased balance	0	0
Federal home loan bank, advances, general debt obligations, disclosures, amount of available, unused funds	8,200,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Borrowings	3,950,000	906,175
Advance from Federal Home Loan Bank	3,800,000
Loans and securities pledged to the FHLB	19,100,000
Outstanding federal funds purchased balance	0	$ 0
Federal home loan bank, advances, general debt obligations, disclosures, amount of available, unused funds	$ 8,200,000
Weighted Average
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank, advances, branch of FHLB bank, interest rate	5.60%
Federal Funds Purchased
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Lines of credit	$ 600,000
FRB Bank Team Funding Program [Member] \| Federal Reserve Bank Advances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Long-term line of credit	$ 200,000
Interest rate available lines of credit	4.80%
Line of credit facility, collateral pledged	$ 1,400,000
Line of credit facility, average outstanding amount	31,900
Lines of credit	1,300,000
Discount Window [Member] \| Federal Reserve Bank Advances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Lines of credit	$ 1,600,000

Line of Credit Facility, Collateral Pledged

No definition available.

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- Definition

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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- Definition

Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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- Definition

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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- Definition

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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- Definition

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Average amount borrowed under the credit facility during the period.

+ References

No definition available.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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- Definition

The effective interest rate at the end of the reporting period.

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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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