Investments in Affiliates and Affiliate-Sponsored Investment Products (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Variable Interest Entities | ||
| Carrying value of equity method investment in affiliate | $ 2,936.8 | $ 2,870.4 |
| Maximum loss exposure for affiliates accounted for under the equity method | 3,536.4 | 3,352.1 |
| Voting Rights Entities | ||
| Variable Interest Entities | ||
| Equity method investments | 166.7 | 106.8 |
| Maximum loss exposure for affiliates accounted for under the equity method | 166.7 | 106.8 |
| Variable Interest Entity, Not Primary Beneficiary | ||
| Variable Interest Entities | ||
| Carrying value of equity method investment in affiliate | 2,770.1 | 2,763.6 |
| Maximum loss exposure attributable to affiliates accounted for under equity method | 3,369.7 | 3,245.3 |
| Variable Interest Entity, Primary Beneficiary | ||
| Variable Interest Entities | ||
| Carrying value of equity method investment in affiliate | 249.6 | 88.9 |
| Maximum loss exposure attributable to affiliate sponsored investment products | $ 340.8 | $ 158.7 |
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- Definition Equity Method Investment, Reporting Entity Involvement, Maximum Loss Exposure, Amount No definition available.
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in equity method investee and investment in and advance to affiliate. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Difference between the carrying amount of assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the variable interest entity (VIE) and the reporting entity's maximum exposure to loss as a result of its involvement with the VIE, where the reporting entity is not the VIE's primary beneficiary. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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