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Share-Based Compensation Plans Nonvested Restricted Stock Units (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Restricted Stock Awards, Nonvested, Number of Shares [Roll Forward]
Nonvested, Beginning Balance	4,197,652
Granted in Period	943,160	[1]	863,137	1,057,981
Vested in Period	(919,738)
Forfeited in Period	(195,504)
Nonvested, Ending Balance	4,025,570		4,197,652
Restricted Stock Awards, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance	$ 24.27
Granted in Period, Weighted Average Grant Date Fair Value	26.56	[1]	$ 31.07	$ 27.43
Vested in Period, Weighted Average Grant Date Fair Value	25.24
Forfeited in Period, Weighted Average Grant Date Fair Value	24.24
Nonvested, Weighted Average Grant Date Fair Value, Ending Balance	$ 24.58		$ 24.27
Class B Common Stock Bonus [Member]
Restricted Stock Awards, Nonvested, Number of Shares [Roll Forward]
Granted in Period	464,660
Restricted Stock Awards, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Vesting period, years	3 years
Class B Common Stock Key Employees [Member]
Restricted Stock Awards, Nonvested, Number of Shares [Roll Forward]
Granted in Period	478,500
Restricted Stock Awards, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Vesting period, years	10 years
Minimum [Member]
Restricted Stock Awards, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Lapse of restrictions on vested portion of restricted stock award	5 years
Maximum [Member]
Restricted Stock Awards, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Lapse of restrictions on vested portion of restricted stock award	10 years
[1] During 2016, Federated awarded 464,660 shares of restricted Federated Class B common stock in connection with a bonus program in which certain key employees received a portion of their bonus in the form of restricted stock under the Plan. This restricted stock, which was granted on the bonus payment date and issued out of treasury, generally vests over a three-year period. Also during 2016, Federated awarded 478,500 shares of restricted Federated Class B common stock to certain key employees. The restricted stock awards generally vest over ten-year periods with restrictions on the vested portions of the awards lapsing on the awards' fifth- and tenth-year anniversaries.

X

- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB
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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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-Subparagraph (c)(1)(iv)(3)
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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-Name Accounting Standards Codification
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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