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Short-Term Borrowings - Short-term borrowings (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Jun. 10, 2020
Short-Term Borrowings
Debt Instrument Interest Rate Stated Percentage			5.325%
Weighted average interest rates of short-term borrowings	4.32%	4.76%
Short-term borrowings average	$ 433.8	$ 225.1
Maximum amounts outstanding of short-term borrowing	$ 578.7	$ 410.6
Federal Reserve Bank Advances
Short-Term Borrowings
Debt Instrument Interest Rate Stated Percentage	4.83%
Federal Reserve Bank Advances | Asset pledged as collateral
Short-Term Borrowings
Assets pledged	$ 187.7

X

- Definition

Represents the monetary amount of Short term borrowing maximum amounts outstanding at any month end, as of the indicated date.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

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- Definition

Represents the monetary amount of Short-term borrowings average, as of the indicated date.

+ References

No definition available.

+ Details

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X

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

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Balance Type:	na
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- Definition

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.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-7

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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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- Details

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