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Assets Purchased under Resale Agreements and Sold under Repurchase Agreements - Resale Agreements (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Offsetting Assets [Line Items] |  |  |
Gross resale agreements | $ 760.0 | $ 1,330.0 |
Loans purchased under agreements to resell | $ 32.2 | $ 1,020.0 |
Securities Purchased under Agreements to Resell, Average Yield | 2.12% | 1.53% | 1.94%
Loans Purchased Under Resale Agreements |  |  |
Offsetting Assets [Line Items] |  |  |
Weighted average yield (as a percent) | 2.16% | 1.53% | 2.27%

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- Definition Weighted average yield on the amount to be repaid by the counterparty to the resale agreement. + References No definition available. + Details
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- Definition Loans Purchased Under Agreements to Resell + References No definition available. + Details
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- Definition Average yield on securities purchased under agreements to resell. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1402 -Paragraph (b) -Subparagraph (2) Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1402 -Paragraph (a) + Details
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- Definition Amount, before effects of master netting arrangements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313 + Details
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