Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue
Total Revenue	$ 424,844	$ 402,583	$ 848,384	$ 798,954
Operating Expenses
Compensation and Related	144,872	130,748	288,143	267,294
Distribution	99,399	93,503	198,484	188,398
Systems and Communications	23,481	23,194	47,707	45,017
Professional Service Fees	18,628	19,845	37,176	38,197
Office and Occupancy	9,910	9,765	19,862	19,734
Advertising and Promotional	6,146	6,621	10,722	10,927
Travel and Related	4,117	3,847	7,670	7,119
Intangible Asset Related	3,503	69,392	6,699	72,627
Other	(2,296)	4,951	(16,935)	10,343
Total Operating Expenses	307,760	361,866	599,528	659,656
Operating Income	117,084	40,717	248,856	139,298
Nonoperating Income (Expenses)
Investment Income, net	5,734	5,988	12,247	12,724
Gain (Loss) on Securities, net	11,213	(856)	12,175	891
Debt Expense	(3,170)	(3,159)	(6,349)	(6,308)
Other, net	(35)	(34)	(62)	69
Total Nonoperating Income (Expenses), net	13,742	1,939	18,011	7,376
Income Before Income Taxes	130,826	42,656	266,867	146,674
Income Tax Provision	34,135	23,431	66,300	52,439
Net Income Including the Noncontrolling Interests in Subsidiaries	96,691	19,225	200,567	94,235
Less: Net Income (Loss) Attributable to the Noncontrolling Interests in Subsidiaries	5,691	(1,802)	8,433	(1,825)
Net Income	91,000	21,027	192,134	96,060
Amounts Attributable to Federated Hermes, Inc.
Net Income Attributable to Federated Hermes Common Stock - Basic	86,857	16,294	183,474	90,250
Net Income Attributable to Federated Hermes Common Stock - Diluted	$ 86,857	$ 16,294	$ 183,474	$ 90,250
Earnings Per Common Share—Basic (usd per share)	$ 1.16	$ 0.20	$ 2.40	$ 1.12
Earnings Per Common Share—Diluted (usd per share)	1.16	0.20	2.40	1.12
Cash Dividends Per Share (usd per share)	$ 0.34	$ 1.31	$ 0.65	$ 1.59
Investment Advisory Fees, net | Affiliates
Revenue
Total Revenue	$ 225,347	$ 211,111	$ 448,720	$ 413,902
Investment Advisory Fees, net | Other
Revenue
Total Revenue	62,088	59,511	126,175	121,014
Administrative Service Fees, net—Affiliates | Affiliates
Revenue
Total Revenue	101,657	95,346	202,766	190,132
Other Service Fees, net | Affiliates
Revenue
Total Revenue	30,442	32,190	61,309	65,554
Other Service Fees, net | Other
Revenue
Total Revenue	$ 5,310	$ 4,425	$ 9,414	$ 8,352