Consolidation - Consolidated Federated Hermes Fund VIEs (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Cash and Cash Equivalents	$ 504,441	$ 383,180	$ 336,782
Other Current Assets	4,796	5,900
Other Long-Term Assets	40,358	34,534
Less: Liabilities	933,964	947,747
Less: Accumulated Other Comprehensive Income (Loss), net of tax	(32,083)	(19,911)
Investments—Consolidated Investment Companies
Variable Interest Entity [Line Items]
Investments—Consolidated Investment Companies	82,441	70,543
Affiliates
Variable Interest Entity [Line Items]
Investments—Consolidated Investment Companies	54,160	106,952
Receivables—Affiliates and Other	36,317	48,694
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and Cash Equivalents	8,700	10,100
Other Current Assets	1,200	300
Other Long-Term Assets	13,900	13,800
Less: Liabilities	8,800	14,000
Less: Accumulated Other Comprehensive Income (Loss), net of tax	0	600
Less: Redeemable Noncontrolling Interests in Subsidiaries	54,400	11,600
Federated Hermes’ Net Interest in VIEs	38,600	15,100
Variable Interest Entity, Primary Beneficiary | Foreign Currency Forward
Variable Interest Entity [Line Items]
Other Current Assets	100
Variable Interest Entity, Primary Beneficiary | Investments—Consolidated Investment Companies
Variable Interest Entity [Line Items]
Investments—Consolidated Investment Companies	77,800	12,400
Variable Interest Entity, Primary Beneficiary | Affiliates
Variable Interest Entity [Line Items]
Receivables—Affiliates and Other	$ 200	$ 4,700