Income Taxes	9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes On December 22, 2017, the Tax Act was signed into law. The Tax Act significantly modified the federal tax code and, among other changes, reduced the federal corporate income tax rate from a maximum of 35% to a flat 21%. In addition, as a result of this rate change, Federated's 2017 results included a $70.4 million reduction to the income tax provision resulting from the revaluation of its net deferred tax liability. This represents a provisional estimate based on management's initial analysis and interpretation of the legislation. Given the complexity of the legislation, anticipated guidance from the U.S. Department of Treasury (Treasury Department) and the potential for additional guidance from the SEC and/or the FASB, this estimate may be adjusted during 2018. As of September 30, 2018, management does not anticipate a material change to the estimate. The Tax Act's international provisions regarding Global Intangible Low-Taxed Income (GILTI) and the Base Erosion Anti-Avoidance Tax (BEAT) are not expected to have a material impact on Federated's financial statements. However, this assessment is based on a preliminary review and analysis of these provisions and may change as Federated continues its evaluation of these highly complex rules, for which interpretive guidance is needed and expected. In addition, the Hermes Acquisition increases the potential impact of these U.S. international tax provisions. In January 2018, the FASB released guidance on the accounting for the GILTI provisions, indicating that a company can elect an accounting policy either to account for the GILTI tax as an expense in the period incurred or to factor the GILTI tax into the measurement of deferred taxes. As Federated requires additional time to evaluate the GILTI provisions and their accounting implications, it has not yet elected its accounting policy with regard to this item.

Income Taxes

On December 22, 2017, the Tax Act was signed into law. The Tax Act significantly modified the federal tax code and, among other changes, reduced the federal corporate income tax rate from a maximum of 35% to a flat 21%. In addition, as a result of this rate change, Federated's 2017 results included a $70.4 million reduction to the income tax provision resulting from the revaluation of its net deferred tax liability. This represents a provisional estimate based on management's initial analysis and interpretation of the legislation. Given the complexity of the legislation, anticipated guidance from the U.S. Department of Treasury (Treasury Department) and the potential for additional guidance from the SEC and/or the FASB, this estimate may be adjusted during 2018. As of September 30, 2018, management does not anticipate a material change to the estimate.

The Tax Act's international provisions regarding Global Intangible Low-Taxed Income (GILTI) and the Base Erosion Anti-Avoidance Tax (BEAT) are not expected to have a material impact on Federated's financial statements. However, this assessment is based on a preliminary review and analysis of these provisions and may change as Federated continues its evaluation of these highly complex rules, for which interpretive guidance is needed and expected. In addition, the Hermes Acquisition increases the potential impact of these U.S. international tax provisions.

In January 2018, the FASB released guidance on the accounting for the GILTI provisions, indicating that a company can elect an accounting policy either to account for the GILTI tax as an expense in the period incurred or to factor the GILTI tax into the measurement of deferred taxes. As Federated requires additional time to evaluate the GILTI provisions and their accounting implications, it has not yet elected its accounting policy with regard to this item.