Income tax - Schedule of Tax Character of Distributions (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Income Tax Disclosure [Abstract] | |||
| Ordinary income | $ 321.5 | $ 286.1 | $ 275.5 |
| Capital gains | $ 11.1 | $ 23.4 | $ 0.0 |
| X | ||||||||||
- Definition Investment Company, Distribution, Capital Gain No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of dividend distribution by investment company from ordinary income. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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