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Investments - Investments in Equity Securities (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2024 USD ($)
Equity Securities |
Balance at December 31, 2023 | $ 91.2
New investments | 6.0
(Decrease) increase in fair value of investments in equity securities | (1.7)
Foreign currency translation adjustments and other | (0.2)
Balance at March 31, 2024 | 95.3
Investment in Equity Securities, Level 1 |
Equity Securities |
Balance at December 31, 2023 | 4.8
New investments | 0.0
(Decrease) increase in fair value of investments in equity securities | (2.0)
Foreign currency translation adjustments and other | (0.1)
Balance at March 31, 2024 | 2.7
Investment in Equity Securities, Level 2 |
Equity Securities |
Balance at December 31, 2023 | 6.1
New investments | 0.0
(Decrease) increase in fair value of investments in equity securities | 0.1
Foreign currency translation adjustments and other | 0.0
Balance at March 31, 2024 | 6.2
Investments in Equity Securities, All Others |
Equity Securities |
Balance at December 31, 2023 | 80.3
New investments | 6.0
(Decrease) increase in fair value of investments in equity securities | 0.2
Foreign currency translation adjustments and other | (0.1)
Balance at March 31, 2024 | $ 86.4

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