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Consolidated Sponsored Investment Products - Derivative Instruments (Details) - Consolidated Sponsored Investment Products [Member] $ in Thousands | Sep. 30, 2015 USD ($)
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Options [Member] | Long [Member] |
Derivative [Line Items] |
Volume | $ 3,527
Options [Member] | Short [Member] |
Derivative [Line Items] |
Volume | 2,499
Futures [Member] |
Derivative [Line Items] |
Volume | 109,286
Forward foreign currency exchange [Member] | Long [Member] |
Derivative [Line Items] |
Volume | 2,294
Forward foreign currency exchange [Member] | Short [Member] |
Derivative [Line Items] |
Volume | 26,565
Interest rate swaps [Member] |
Derivative [Line Items] |
Volume | 31,603
Other swaps [Member] |
Derivative [Line Items] |
Volume | $ 27,956

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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