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Concentration Risk - Schedule of Revenue Concentration by Investment Strategy/Fund (Details) - Product Concentration Risk	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Federated Strategic Value Dividend strategy
Concentration Risk [Line Items]
Concentration risk	13.00%	18.00%	15.00%	18.00%
Federated Kaufmann Mid-Cap Growth strategy
Concentration Risk [Line Items]
Concentration risk	10.00%	9.00%	10.00%	9.00%

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