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Fair Value Measurements and Investments (Details) € in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) shares | Dec. 31, 2023 EUR (€) shares | Dec. 31, 2022 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Equity Securities without Readily Determinable Fair Value, Amount | $ 6.5 |  |  |  |
Interest Receivable, Current | 11.9 |  |  | $ 11.6 |
Equity Method Investments | 32.3 |  |  | 26.7 |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Financial Instruments, Owned, Principal Investments, at Fair Value | (325.7) | [1] | € (400.0) | (322.6) | [1]
Fair Value, Option, Changes in Fair Value, Gain (Loss) | 6.8 | [1] |  |  |
Foreign Currency Transaction Gain (Loss), Realized | 9.9 | [1] |  |  |
Fair Value, Recurring [Member] |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Financial Instruments, Owned, Principal Investments, at Fair Value | $ (325.7) | [1] |  | (322.6) | [1]
Ordinary voting shares [Member] |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Investment ownership percentage | 38.00% |  | 38.00% |  |
Investment Owned, Balance, Shares | shares | 12,987,900 |  | 12,987,900 |  |
Preference shares [Member] |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Investment ownership percentage | 28.00% |  | 28.00% |  |
Investment Owned, Balance, Shares | shares | 9,588,908 |  | 9,588,908 |  |
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Financial Instruments, Owned, Principal Investments, at Fair Value | $ 0.0 | [1] |  | $ 0.0 | [1]
[1] | The Loan under the fair value option is included in Other investments in the consolidated balance sheets.

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