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Fair Value of Financial Instruments - Schedule of Financial Instruments Measured on Not Measured at Fair Value (Details) - Nonrecurring - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
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Carrying Value |  |
Assets |  |
Measurement alternative investment | $ 0.9 | $ 0.9
Total assets not accounted for at fair value | 0.9 | 0.9
Liabilities |  |
Debt obligations | 674.8 | 707.4
Total liabilities not accounted for at fair value | 674.8 | 707.4
Estimated Fair Value |  |
Assets |  |
Measurement alternative investment | 0.9 | 0.9
Total assets not accounted for at fair value | 0.9 | 0.9
Liabilities |  |
Debt obligations | 570.2 | 621.8
Total liabilities not accounted for at fair value | 570.2 | 621.8
Estimated Fair Value | Level 1 |  |
Assets |  |
Measurement alternative investment | 0.0 | 0.0
Total assets not accounted for at fair value | 0.0 | 0.0
Liabilities |  |
Debt obligations | 265.9 | 283.2
Total liabilities not accounted for at fair value | 265.9 | 283.2
Estimated Fair Value | Level 2 |  |
Assets |  |
Measurement alternative investment | 0.0 | 0.9
Total assets not accounted for at fair value | 0.0 | 0.9
Liabilities |  |
Debt obligations | 304.3 | 338.6
Total liabilities not accounted for at fair value | 304.3 | 338.6
Estimated Fair Value | Level 3 |  |
Assets |  |
Measurement alternative investment | 0.9 | 0.0
Total assets not accounted for at fair value | 0.9 | 0.0
Liabilities |  |
Debt obligations | 0.0 | 0.0
Total liabilities not accounted for at fair value | $ 0.0 | $ 0.0

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- Definition Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 35 -Paragraph 54B -Publisher FASB -URI https://asc.fasb.org//1943274/2147482134/820-10-35-54B Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-6A + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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