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Consolidation (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Variable Interest Entity [Line Items] |  |  |
Accounts receivable from sponsored investment companies | $ 27,100 | $ 16,900 |
Total Waived Fees | 413,700 | 662,700 | $ 764,300
Trading Securities - Consolidated Investment Companies Carrying Amount | 58,072 | 25,368 |
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net | 14,900 | 17,000 |
Nonredeemable noncontrolling interest in subsidiary | 958 | 1,156 |
Consolidated Voting Rights Entities [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Trading Securities - Consolidated Investment Companies Carrying Amount | 14,900 |  |
Redeemable noncontrolling interests in subsidiaries | $ 3,100 |  |
GeneralPartnershipandVIE [Member] | Passport [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Noncontrolling interest, ownership percentage by parent | 50.50% |  |
Noncontrolling interest, ownership percentage by noncontrolling owners | 49.50% |  |
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities | $ 5,900 |  |
Variable Interest Entity, Not Primary Beneficiary [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Federated's maximum risk of loss in consolidated investment companies | 2,300 | 301,500 |
Carrying value of investment of nonconsolidated VIEs | 2,300 | 301,500 |
AUM for nonconsolidated Federated Funds | 76,300 | 268,000,000 |
Cash and Cash Equivalents [Member] | GeneralPartnershipandVIE [Member] | Passport [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Variable Interest Entity, consolidated, carrying amount, assets | $ 7,800 |  |
Cash and Cash Equivalents [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Money Market Funds [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying value of investment of nonconsolidated VIEs |  | 159,700 |
Investments [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying value of investment of nonconsolidated VIEs |  | $ 141,800 |

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