Accumulated Other Comprehensive Income (Loss) Attributable to Federated Hermes, Inc. Shareholders (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	$ 1,128,252	$ 1,045,692	$ 1,114,017
Balance, end of period	1,095,206	1,128,252	1,045,692
Foreign Currency Translation Gain (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	(19,911)	(45,676)	16,362
Other Comprehensive Income (Loss)	(12,172)	25,765	(62,038)
Balance, end of period	$ (32,083)	$ (19,911)	$ (45,676)