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Investment Partnerships - Gains and Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Equity Method Investments and Joint Ventures [Abstract] |  |  |  |
Gains (losses) from investment partnerships | $ 58,504 | $ (79,890) | $ 8,912 | $ (57,905)
Tax expense (benefit) | 12,310 | (19,142) | 2,144 | (14,305)
Contribution to net earnings (loss) | $ 46,194 | $ (60,748) | $ 6,768 | $ (43,600)

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