Total amount of fees waived by the company for competitive, contractual or regulatory reasons.

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The carrying amount of the trading securities - consolidated investment companies - included in the reporting entity's statement of financial position.

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No definition available.

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

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The carrying amount of assets an investment adviser manages on behalf of investors.

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No definition available.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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No definition available.

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Amount of financial support provided to a nonconsolidated legal entity that is required to comply with or operate in accordance with requirements that are similar to those included in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds.

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Portion of equity (net assets) in a subsidiary not attributable, directly or indirectly, to the parent entity which is not redeemable by the parent entity.

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No definition available.

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Fair value of noncontrolling interests which are redeemable by the parent entity and classified as other equity.

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The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

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The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

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The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Consolidation Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
Consolidation Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jan. 27, 2017
Variable Interest Entities [Line Items]
Accounts receivable from Federated Funds	$ 27,100	$ 24,900		$ 24,900
Total Fee Waivers		83,800	$ 113,900	259,100	$ 356,000
Investments—consolidated investment companies	58,072	45,046		45,046
Nonredeemable noncontrolling interest in subsidiary	958	0		0
Receivables	44,804	45,530		45,530
Financial Support, Fee Waivers [Member]
Variable Interest Entities [Line Items]
Nonconsolidated Legal Entity, Financial Support Amount		53,100	82,400	166,700	262,100
Financial Support, Capital Contributions [Member]
Variable Interest Entities [Line Items]
Nonconsolidated Legal Entity, Financial Support Amount		0	$ 0	0	$ 0
Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Variable Interest Entities [Line Items]
Investments—consolidated investment companies	43,200	43,400		43,400
Redeemable noncontrolling interest in subsidiaries	28,300	28,600		28,600
Liabilities	700	600		600
Federated's maximum risk of loss in consolidated investment companies	14,900	15,100		15,100
Non-Consolidated Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entities [Line Items]
Carrying Value of investment of nonconsolidated VIEs	2,300	1,200		1,200
Federated's maximum risk of loss in consolidated investment companies	2,300	1,200		1,200
AUM for nonconsolidated Federated Funds	76,300	15,800		15,800
Cash and Cash Equivalents [Member] \| Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Variable Interest Entities [Line Items]
Consolidated VIE assets	0	100		100
Trade Accounts Receivable [Member] \| Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Variable Interest Entities [Line Items]
Consolidated VIE assets	$ 700	800		800
General Partnership and VIE [Member]
Variable Interest Entities [Line Items]
Receivables						$ 1,100
General Partnership and VIE [Member] \| Passport [Member]
Variable Interest Entities [Line Items]
Noncontrolling interest, ownership percentage by parent	50.50%
Noncontrolling interest, ownership percentage by noncontrolling owners	49.50%
General Partnership and VIE [Member] \| Deconsolidation [Member]
Variable Interest Entities [Line Items]
Liabilities						5,300
Nonredeemable noncontrolling interest in subsidiary						1,000
General Partnership and VIE [Member] \| Cash and Cash Equivalents [Member] \| Deconsolidation [Member]
Variable Interest Entities [Line Items]
Consolidated VIE assets						4,800
General Partnership and VIE [Member] \| Trade Accounts Receivable [Member] \| Deconsolidation [Member]
Variable Interest Entities [Line Items]
Consolidated VIE assets						$ 2,600
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member]
Variable Interest Entities [Line Items]
Investments—consolidated investment companies	$ 14,900	1,600		1,600
Redeemable noncontrolling interest in subsidiaries	$ 3,100	$ 400		$ 400