CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income Including the Noncontrolling Interests in Subsidiaries	$ 336,022	$ 277,125	$ 222,299
Permanent Equity
Foreign Currency Translation Gain (Loss)	15,420	14,368	(13,607)
Reclassification Adjustment Related to Foreign Currency Items	0	0	(191)
Reclassification Adjustment Related to Equity Securities	0	0	(29)
Temporary Equity
Foreign Currency Translation Gain (Loss)	6,593	6,907	(6,009)
Other Comprehensive Income (Loss), net of tax	22,013	21,275	(19,836)
Comprehensive Income Including the Noncontrolling Interests in Subsidiaries	358,035	298,400	202,463
Less: Comprehensive Income (Loss) Attributable to Redeemable Noncontrolling Interest in Subsidiaries	16,251	11,693	(4,007)
Comprehensive Income Attributable to Federated Hermes, Inc.	$ 341,784	$ 286,707	$ 206,470