Subsequent Events	9 Months Ended
Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 25, 2018, the board of directors declared a $0.27 per share dividend to shareholders of record as of November 8, 2018 to be paid on November 15, 2018. On October 25, 2018, pursuant to authority granted under Federated's Stock Incentive Plan (the Plan), Federated's compensation committee and board of directors approved a UK Sub-Plan to the Federated Investors, Inc. Stock Incentive Plan (UK Sub-Plan). The UK Sub-Plan supplements certain provisions of the Plan to allow awards of shares of restricted Federated Class B common stock, and other types of awards permitted under the Plan, to be granted to employees in the United Kingdom (UK). In connection with any award, payment representing dividends or interest or their equivalent may be made to participants. The UK Sub-Plan does not have a fixed expiration date but may be terminated by Federated's board of directors at any time. The compensation committee has full authority to make awards under the UK Sub-Plan, to determine the terms and conditions of such awards, and to interpret and make all other determinations affecting the UK Sub-Plan, subject to the provisions of the UK Sub-Plan and the Plan, and direction by Federated's board of directors. As determined by the compensation committee, among other terms, awards under the UK Sub-Plan may have a purchase price of $3.00 per share, have a five year cliff vesting schedule and be subject to certain vesting acceleration, forfeiture or malus and clawback provisions that may apply depending upon the circumstances surrounding a participant's termination of employment or the occurrence of certain other events. The compensation committee may delegate some or all of its authority and responsibility under the UK Sub-Plan consistent with the Plan. The compensation committee has delegated its full power and authority under the UK Sub-Plan to Federated's Chief Executive Officer with respect to all employees other than those subject to Section 16 of the Securities Exchange Act of 1934. Please refer to the description of the Plan set forth under "Summary of Stock Incentive Plan" in Federated's Information Statement, dated March 15, 2018, the Plan attached to such Information Statement, and the UK Sub-Plan attached to this Quarterly Report on Form 10-Q as Exhibit 10.1. The Form of Restricted Stock Award Agreement for use in connection with awards under the UK Sub-Plan is attached to this Quarterly Report on Form 10-Q as Exhibit 10.2. On October 26, 2018, Federated entered into a second amendment to the Credit Agreement to clarify that a subsidiary created to be the general partner of a private fund, as well as the private fund, would not be required to execute a guarantee agreement to guarantee payment of all obligations incurred through the Credit Agreement. The Second Amendment to the Credit Agreement is attached to this Quarterly Report on Form 10-Q as Exhibit 10.3.

Subsequent Events

On October 25, 2018, the board of directors declared a $0.27 per share dividend to shareholders of record as of November 8, 2018 to be paid on November 15, 2018.

On October 25, 2018, pursuant to authority granted under Federated's Stock Incentive Plan (the Plan), Federated's compensation committee and board of directors approved a UK Sub-Plan to the Federated Investors, Inc. Stock Incentive Plan (UK Sub-Plan). The UK Sub-Plan supplements certain provisions of the Plan to allow awards of shares of restricted Federated Class B common stock, and other types of awards permitted under the Plan, to be granted to employees in the United Kingdom (UK). In connection with any award, payment representing dividends or interest or their equivalent may be made to participants. The UK Sub-Plan does not have a fixed expiration date but may be terminated by Federated's board of directors at any time. The compensation committee has full authority to make awards under the UK Sub-Plan, to determine the terms and conditions of such awards, and to interpret and make all other determinations affecting the UK Sub-Plan, subject to the provisions of the UK Sub-Plan and the Plan, and direction by Federated's board of directors. As determined by the compensation committee, among other terms, awards under the UK Sub-Plan may have a purchase price of $3.00 per share, have a five year cliff vesting schedule and be subject to certain vesting acceleration, forfeiture or malus and clawback provisions that may apply depending upon the circumstances surrounding a participant's termination of employment or the occurrence of certain other events. The compensation committee may delegate some or all of its authority and responsibility under the UK Sub-Plan consistent with the Plan. The compensation committee has delegated its full power and authority under the UK Sub-Plan to Federated's Chief Executive Officer with respect to all employees other than those subject to Section 16 of the Securities Exchange Act of 1934. Please refer to the description of the Plan set forth under "Summary of Stock Incentive Plan" in Federated's Information Statement, dated March 15, 2018, the Plan attached to such Information Statement, and the UK Sub-Plan attached to this Quarterly Report on Form 10-Q as Exhibit 10.1. The Form of Restricted Stock Award Agreement for use in connection with awards under the UK Sub-Plan is attached to this Quarterly Report on Form 10-Q as Exhibit 10.2.

On October 26, 2018, Federated entered into a second amendment to the Credit Agreement to clarify that a subsidiary created to be the general partner of a private fund, as well as the private fund, would not be required to execute a guarantee agreement to guarantee payment of all obligations incurred through the Credit Agreement. The Second Amendment to the Credit Agreement is attached to this Quarterly Report on Form 10-Q as Exhibit 10.3.