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Revenue from Contracts with Customers - Disaggregation of Revenue by Product Type (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]      
Total Revenue $ 1,300,447 $ 1,448,268 $ 1,326,894
Federated Hermes Funds      
Disaggregation of Revenue [Line Items]      
Total Revenue 1,024,922 1,191,851 1,093,157
Separate Accounts      
Disaggregation of Revenue [Line Items]      
Total Revenue 259,026 241,631 221,756
Other      
Disaggregation of Revenue [Line Items]      
Total Revenue $ 16,499 $ 14,786 $ 11,981