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Fair Value of Financial Instruments (Schedule of Comparison of the Carrying Value and Estimated Fair Value of Financial Instruments) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Assets |  |  |
Cash and cash equivalents | [1] | $ 4.1 | $ 23.3
Restricted cash and cash equivalents | [1] | 426.7 | 410.9
Debt Securities, Available-for-sale, Restricted |  | 66.0 | 62.1
Loans receivable, net | [1] | 6,643.1 | 6,580.4
Liabilities |  |  |
Revolving secured line of credit | [1] | 220.7 | 2.6
Secured financing | [1] | 3,660.2 | 3,832.1
Senior notes | [1] | 761.0 | 825.8
Mortgage note | [1] | 9.2 | 9.7
Carrying Amount [Member] |  |  |
Assets |  |  |
Cash and cash equivalents |  | 4.1 | 23.3
Restricted cash and cash equivalents |  | 426.7 | 410.9
Debt Securities, Available-for-sale, Restricted |  | 66.0 | 62.1
Loans receivable, net |  | 6,323.7 | 6,336.3
Liabilities |  |  |
Revolving secured line of credit |  | 220.7 | 2.6
Secured financing |  | 3,768.9 | 3,811.5
Senior notes |  | 793.4 | 792.5
Mortgage note |  | 9.2 | 9.7
Estimated Fair Value [Member] |  |  |
Assets |  |  |
Cash and cash equivalents |  | 4.1 | 23.3
Restricted cash and cash equivalents |  | 426.7 | 410.9
Debt Securities, Available-for-sale, Restricted |  | 66.0 | 62.1
Loans receivable, net |  | 6,643.1 | 6,580.4
Liabilities |  |  |
Revolving secured line of credit |  | 220.7 | 2.6
Secured financing |  | 3,660.2 | 3,832.1
Senior notes |  | 761.0 | 825.8
Mortgage note |  | $ 9.2 | $ 9.7
[1] | Measured at amortized cost with fair value disclosed.

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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 No definition available. + Details
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- Definition Amount of restricted investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=120413173&loc=SL6242262-115580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120413209&loc=SL6242269-115581 + Details
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