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Goodwill and Acquired Client Relationships | 6 Months Ended
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Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Acquired Client Relationships | Goodwill and Acquired Client Relationshi p s The following tables present the changes in the Company’s consolidated Goodwill and components of Acquired client relationships (net):
|  | Goodwill
Balance, as of December 31, 2023 |  | $2,523.6
Foreign currency translation |  | (7.5)
Balance, as of June 30, 2024 |  | $2,516.1
| Acquired Client Relationships (Net)
| Definite-lived |  | Indefinite-lived |  | Total
| Gross Book Value |  | Accumulated Amortization |  | Net Book Value |  | Net Book Value |  | Net Book Value
Balance, as of December 31, 2023 | $1,260.5 |  | $(1,051.2) |  | $209.3 |  | $1,603.1 |  | $1,812.4
Intangible amortization and impairments | — |  | (14.5) |  | (14.5) |  | — |  | (14.5)
Foreign currency translation | (1.8) |  | 1.8 |  | — |  | (2.3) |  | (2.3)
Balance, as of June 30, 2024 | $1,258.7 |  | $(1,063.9) |  | $194.8 |  | $1,600.8 |  | $1,795.6
Definite-lived acquired client relationships at the Company’s consolidated Affiliates are amortized over their expected period of economic benefit. The Company recorded amortization expense in Intangible amortization and impairments in the Consolidated Statements of Income for these relationships of $12.5 million and $25.0 million for the three and six months ended June 30, 2023, respectively, and $7.3 million and $14.5 million for the three and six months ended June 30, 2024, respectively. Based on relationships existing as of June 30, 2024, the Company estimates that its consolidated amortization expense will be approximately $15 million for the remainder of 2024, approximately $25 million in each of 2025, 2026, 2027, and 2028, and approximately $15 million in 2029.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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