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Fair Value Measurements - Inputs Used (Details) $ in Millions | Dec. 31, 2024 USD ($)
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Recurring |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Privately-held Investments, at fair value | $ 286.8
Recurring | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Privately-held Investments, at fair value | 286.8
Total, Privately-held Investments | $ 311.0
Discounted cash flow | Commercial mortgage loans | Minimum | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.038
Discounted cash flow | Commercial mortgage loans | Maximum | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.119
Discounted cash flow | Commercial mortgage loans | Weighted Average | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.057
Discounted cash flow | Commercial mortgage loans | Recurring | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Privately-held Investments, at fair value | $ 79.7
Discounted cash flow | Middle market loans | Minimum | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.072
Discounted cash flow | Middle market loans | Maximum | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.180
Discounted cash flow | Middle market loans | Weighted Average | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.098
Discounted cash flow | Middle market loans | Recurring | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Privately-held Investments, at fair value | $ 61.0
Discounted cash flow | Asset-backed | Minimum | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.054
Available-for-Sale, Measurement input | 0.055
Discounted cash flow | Asset-backed | Maximum | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.083
Available-for-Sale, Measurement input | 0.095
Discounted cash flow | Asset-backed | Weighted Average | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.066
Available-for-Sale, Measurement input | 0.071
Discounted cash flow | Asset-backed | Recurring | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Privately-held Investments, at fair value | $ 127.6
Discounted cash flow | Global corporate securities | Minimum | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.067
Discounted cash flow | Global corporate securities | Maximum | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.067
Discounted cash flow | Global corporate securities | Weighted Average | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Trading, Measurement inputs | 0.067
Discounted cash flow | Global corporate securities | Recurring | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Privately-held Investments, at fair value | $ 14.1
Discounted cash flow | Short-term investments — Available for sale | Recurring | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Privately-held Investments, at fair value | 4.4
Valuation, Market Approach | Asset-backed | Recurring | Level 3 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Privately-held Investments, at fair value | $ 24.2

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