Earnings Per Share Attributable to Federated Hermes, Inc. Shareholders (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Numerator
Net Income Attributable to Federated Hermes, Inc.	$ 268,314	$ 298,980	$ 239,496
Less: Total Net Income Available to Participating Unvested Restricted Shareholders	(11,605)	(13,981)	(11,828)
Total Net Income Attributable to Federated Hermes Common Stock	$ 256,709	$ 284,999	$ 227,668
Denominator
Basic Weighted-Average Federated Hermes Common Stock (in shares)	79,426	83,858	85,762
Dilutive Impact from Non-forfeitable Restricted Stock (in shares)	4	5	4
Diluted Weighted-Average Federated Hermes Common Stock (in shares)	79,430	83,863	85,766
Net Income Attributable to Federated Hermes Common Stock – Basic (usd per share)	$ 3.23	$ 3.40	$ 2.65
Net Income Attributable to Federated Hermes Common Share—Diluted (usd per share)	$ 3.23	$ 3.40	$ 2.65