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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	Sep. 30, 2020	Dec. 31, 2019
Variable Interest Entities
Unconsolidated VIE Net Assets	$ 2,309.7	$ 2,282.1
Carrying Value and Maximum Exposure to Loss	$ 0.7	$ 0.9

X

- Definition

Amount of net assets (liabilities).

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X

- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

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