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Investments - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Investments—Affiliates and Other	$ 69,399	$ 87,805
Investments - consolidated investment companies	107,277	105,542
Debt Securities
Schedule of Investments [Line Items]
Investments - consolidated investment companies	55,800	65,200
Stocks of Large Companies
Schedule of Investments [Line Items]
Investments - consolidated investment companies	47,200	28,500
Stocks of Small and Mid Sized Companies
Schedule of Investments [Line Items]
Investments - consolidated investment companies	3,000	7,400
Federated Hermes Funds
Schedule of Investments [Line Items]
Investments—Affiliates and Other	60,600	77,600
Separate Accounts
Schedule of Investments [Line Items]
Investments—Affiliates and Other	8,800	10,200
Separate Accounts | Debt Securities
Schedule of Investments [Line Items]
Investments—Affiliates and Other	4,500	5,200
Separate Accounts | Stocks of Large Companies
Schedule of Investments [Line Items]
Investments—Affiliates and Other	$ 3,100	$ 3,400

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Investments - Affiliates And Other

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