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Investments in Affiliates and Affiliate Sponsored Investment Products - Affiliated Sponsored Investment Products (Details) - Variable Interest Entity, Primary Beneficiary - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Unconsolidated VIE Net Assets	$ 4,958.5	$ 2,378.2
Carrying Value and Maximum Exposure to Loss	$ 15.7	$ 0.9

X

- Definition

Amount of net assets (liabilities).

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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).

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