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Goodwill And Intangible Assets (Components Of Intangible Assets) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Schedule of Indefinite-Lived And Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross carrying amount | $ 2,860,728 | $ 2,836,774
Intangible assets, accumulated amortization | (1,272,044) | (1,089,310)
Customer Relationships [Member] |  |
Schedule of Indefinite-Lived And Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross carrying amount | 1,450,503 | 1,425,330
Intangible assets, accumulated amortization | (600,724) | (498,987)
Investment Management Agreements [Member] |  |
Schedule of Indefinite-Lived And Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross carrying amount | 464,000 | 464,000
Intangible assets, accumulated amortization | (149,560) | (120,394)
Broker and Agent Relationships [Member] |  |
Schedule of Indefinite-Lived And Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross carrying amount | 297,693 | 296,972
Intangible assets, accumulated amortization | (168,586) | (152,142)
Trade Names [Member] |  |
Schedule of Indefinite-Lived And Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross carrying amount | 293,270 | 293,194
Intangible assets, accumulated amortization | (138,040) | (118,976)
Technology [Member] |  |
Schedule of Indefinite-Lived And Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross carrying amount | 113,248 | 113,170
Intangible assets, accumulated amortization | (100,781) | (92,646)
Insurance Licenses [Member] |  |
Schedule of Indefinite-Lived And Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross carrying amount | 72,333 | 74,333
Intangible assets, accumulated amortization | 0 | 0
Other [Member] |  |
Schedule of Indefinite-Lived And Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross carrying amount | 169,681 | 169,775
Intangible assets, accumulated amortization | $ (114,353) | $ (106,165)

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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