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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - Investment Advisory Agreements $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 USD ($) | Sep. 30, 2022 USD ($)
Finite-Lived Intangible Assets [Line Items] |  |
Amortization expense | $ 27.1 | $ 81.4
Estimated amortization expense, Remainder of 2022 | 27.1 | 27.1
Estimated amortization expense, 2023 | 108.1 | 108.1
Estimated amortization expense, 2024 | 105.6 | 105.6
Estimated amortization expense, 2025 | 105.0 | 105.0
Estimated amortization expense, 2026 | $ 87.7 | $ 87.7

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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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