Borrowings under Repurchase Agreements (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) counterparties	Dec. 31, 2021 USD ($) counterparties
Repurchase Agreements [Line Items]
Number of Counterparties with Outstanding Repurchase Agreements \| counterparties	16	15
Pledged Assets, Unsettled	$ 33.0
Repurchase Agreements, collateral amount	$ 900.0	$ 1,000.0
Minimum
Repurchase Agreements [Line Items]
Repurchase Agreements Maturity	30 days
Maximum
Repurchase Agreements [Line Items]
Repurchase Agreements Maturity	364 days
Repurchase Agreements [Member]
Repurchase Agreements [Line Items]
Cash Collateral (Received) Pledged	$ 10.3	$ 77.7

Number of counterparties with outstanding repurchase agreements at period end.

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- Definition

The carrying amount as of the date of the latest financial statement presented of securities which are owned but transferred to serve as collateral for repurchase agreements which have been sold prior to period end but remain unsettled at the balance sheet date.

+ References

No definition available.

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- Definition

[Line Items] for Repurchase Agreements [Table]

+ References

No definition available.

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- Definition

Repurchase Agreements Maturity

+ References

No definition available.

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- Definition

The carrying amount as of the date of the latest financial statement presented of securities which are owned but transferred to serve as collateral for repurchase agreements, and for which the transferee does not have the right by contract or custom to sell or re-pledge them to an unrelated party.

+ References

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-Publisher FASB
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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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