Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue
Total Revenue	$ 1,135,677	$ 1,102,924	$ 1,143,371
Operating Expenses
Compensation and Related	354,765	289,215	296,466
Distribution	287,580	342,779	383,648
Professional Service Fees	42,903	29,064	29,443
Systems and Communications	39,925	31,971	31,271
Office and Occupancy	34,622	29,258	27,379
Advertising and Promotional	16,141	11,166	14,522
Travel and Related	15,594	12,646	13,228
Other	13,867	15,317	11,731
Total Operating Expenses	805,397	761,416	807,688
Operating Income	330,280	341,508	335,683
Nonoperating (Expenses) Income
Investment Income, net	5,985	7,236	7,256
(Loss) Gain on Securities, net	(4,357)	8,072	2,108
Debt Expense	(5,885)	(4,772)	(4,173)
Other, net	(29,849)	(42)	60
Total Nonoperating (Expenses) Income, net	(34,106)	10,494	5,251
Income Before Income Taxes	296,174	352,002	340,934
Income Tax Provision	73,875	57,101	119,420
Net Income Including the Noncontrolling Interests in Subsidiaries	222,299	294,901	221,514
Less: Net Income Attributable to the Noncontrolling Interests in Subsidiaries	2,002	3,560	12,595
Net Income	$ 220,297	$ 291,341	$ 208,919
Amounts Attributable to Federated Investors, Inc.
Earnings Per Common Share—Basic and Diluted (usd per share)	$ 2.18	$ 2.87	$ 2.03
Cash Dividends Per Share (usd per share)	$ 1.06	$ 1	$ 2
Investment Advisory Fees, net—Affiliates
Revenue
Total Revenue	$ 585,832	$ 591,112	$ 654,224
Investment Advisory Fees, net—Other
Revenue
Total Revenue	187,586	140,558	112,601
Administrative Service Fees, net—Affiliates
Revenue
Total Revenue	199,269	188,814	211,646
Other Service Fees, net—Affiliates
Revenue
Total Revenue	156,935	176,397	160,024
Other Service Fees, net—Other
Revenue
Total Revenue	$ 6,055	$ 6,043	$ 4,876