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GOODWILL AND INTANGIBLE ASSETS
12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND INTANGIBLE ASSETS GOODWILL AND INTANGIBLE ASSETS.
Goodwill and intangible assets consist of the following at December 31:

(in millions)20242023
Goodwill$2,642.8 $2,642.8 
Indefinite-lived intangible assets - trade name86.0 117.1 
Indefinite-lived intangible assets - investment advisory agreements65.6 65.6 
Definite-lived intangible assets - investment advisory agreements216.5 324.6 
Total$3,010.9 $3,150.1 

We evaluate the carrying amount of goodwill in our consolidated balance sheets for possible impairment on an annual basis in the fourth quarter using a fair value approach. We did not record any impairment charges for goodwill for the years ended December 31, 2024, 2023, or 2022.

We recognized impairments of indefinite-lived intangibles of $31.1 million in 2024, no impairments in 2023, and $116.8 million in 2022. The $31.1 million impairment in 2024 was attributable to the trade name. Of the $116.8 million in impairments in 2022, $99.2 million was attributable to investment advisory agreements and $17.6 million for the trade name. The impairments in 2024 and 2022 were the result of reduced growth expectations for both management and incentive fees and a higher discount rate.

Definite-lived investment advisory agreement intangible assets consisted of the following at December 31 :

(in millions)20242023
Gross carrying amount$613.9 $613.9 
Accumulated amortization & impairments(397.4)(289.3)
Net carrying amount$216.5 $324.6 
Remaining weighted-average estimated useful life3.75.5

We recognized insignificant impairments of definite-lived intangibles in 2024 and 2023, and $58.3 million in 2022. The 2022 impairments resulted from reduced growth expectations for both management and incentive fees and a higher discount rate.

Amortization and impairment expense for the definite-lived investment advisory agreement intangible assets was $108.1 million in 2024, $122.5 million in 2023, and $166.8 million in 2022, respectively. Estimated amortization expense for the definite-lived investment advisory agreements intangible assets for the five succeeding years is as follows:

(in millions)2024
2025$77.1 
202661.8 
202742.9 
202812.7 
20299.7