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CONSOLIDATED INVESTMENT PRODUCTS - Fair Value Hierarchy Levels of Investments Held and Notes Issued by Consolidated Investment Products (Details) - Consolidated - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Assets: |  |
Real estate investments | $ 0.0 | $ 438.6
Total assets at fair value | 8,663.3 | 7,492.7
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Real estate investments | 0.0 | 0.0
Total assets at fair value | 40.8 | 57.6
Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Real estate investments | 0.0 | 0.0
Total assets at fair value | 7,715.5 | 6,198.8
Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Real estate investments | 0.0 | 0.0
Total assets at fair value | 505.8 | 383.1
Investments Measured at NAV as a practical expedient |  |
Assets: |  |
Real estate investments | 0.0 | 438.6
Total assets at fair value | 401.2 | 853.2
Bank loans |  |
Assets: |  |
Bank loan, bonds and equity securities | 7,345.5 | 5,793.0
Bank loans | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Bank loan, bonds and equity securities | 0.0 | 0.0
Bank loans | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Bank loan, bonds and equity securities | 6,958.7 | 5,494.5
Bank loans | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Bank loan, bonds and equity securities | 386.8 | 298.5
Bank loans | Investments Measured at NAV as a practical expedient |  |
Assets: |  |
Bank loan, bonds and equity securities | 0.0 | 0.0
Bonds |  |
Assets: |  |
Bank loan, bonds and equity securities | 770.7 | 605.5
Bonds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Bank loan, bonds and equity securities | 22.6 | 17.2
Bonds | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Bank loan, bonds and equity securities | 743.6 | 588.3
Bonds | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Bank loan, bonds and equity securities | 4.5 | 0.0
Bonds | Investments Measured at NAV as a practical expedient |  |
Assets: |  |
Bank loan, bonds and equity securities | 0.0 | 0.0
Equity securities, Equity and fixed income mutual funds |  |
Assets: |  |
Bank loan, bonds and equity securities | 125.8 | 144.5
Equity and fixed income mutual funds, and investments in other private equity funds | 20.1 | 96.5
Equity securities, Equity and fixed income mutual funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Bank loan, bonds and equity securities | 9.9 | 37.2
Equity and fixed income mutual funds, and investments in other private equity funds | 8.3 | 3.2
Equity securities, Equity and fixed income mutual funds | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Bank loan, bonds and equity securities | 1.4 | 22.7
Equity and fixed income mutual funds, and investments in other private equity funds | 11.8 | 93.3
Equity securities, Equity and fixed income mutual funds | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Bank loan, bonds and equity securities | 114.5 | 84.6
Equity and fixed income mutual funds, and investments in other private equity funds | 0.0 | 0.0
Equity securities, Equity and fixed income mutual funds | Investments Measured at NAV as a practical expedient |  |
Assets: |  |
Bank loan, bonds and equity securities | 0.0 | 0.0
Equity and fixed income mutual funds, and investments in other private equity funds | 0.0 | 0.0
Investments in other private equity funds |  |
Assets: |  |
Equity and fixed income mutual funds, and investments in other private equity funds | 401.2 | 414.6
Investments in other private equity funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Equity and fixed income mutual funds, and investments in other private equity funds | 0.0 | 0.0
Investments in other private equity funds | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Equity and fixed income mutual funds, and investments in other private equity funds | 0.0 | 0.0
Investments in other private equity funds | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Equity and fixed income mutual funds, and investments in other private equity funds | 0.0 | 0.0
Investments in other private equity funds | Investments Measured at NAV as a practical expedient |  |
Assets: |  |
Equity and fixed income mutual funds, and investments in other private equity funds | $ 401.2 | $ 414.6

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