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Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Goodwill | The following tables present the changes in Goodwill and components of Acquired client relationships (net) for the Company’s consolidated Affiliates:
|  | Goodwill
|  | Institutional |  | Mutual Fund |  | High Net Worth |  | Total
Balance, as of December 31, 2015 |  | $ | 1,141.3 |  |  | $ | 1,119.5 |  |  | $ | 407.6 |  |  | $ | 2,668.4 |
Foreign currency translation |  | (0.6 | ) |  | (26.9 | ) |  | 3.4 |  |  | (24.1 | )
Balance, as of September 30, 2016 |  | $ | 1,140.7 |  |  | $ | 1,092.6 |  |  | $ | 411.0 |  |  | $ | 2,644.3 |
Schedule of Changes in the Components of Acquired Client Relationships |
| Acquired Client Relationships
| Definite-lived |  | Indefinite-lived |  | Total
| Gross Book Value |  | Accumulated Amortization |  | Net Book Value |  | Net Book Value |  | Net Book Value
Balance, as of December 31, 2015 | $ | 1,301.8 |  |  | $ | (680.4 | ) |  | $ | 621.4 |  |  | $ | 1,065.0 |  |  | $ | 1,686.4 |
Intangible amortization and impairments | — |  |  | (80.3 | ) |  | (80.3 | ) |  | (1.9 | ) |  | (82.2 | )
Foreign currency translation | (8.7 | ) |  | — |  |  | (8.7 | ) |  | (49.2 | ) |  | (57.9 | )
Balance, as of September 30, 2016 | $ | 1,293.1 |  |  | $ | (760.7 | ) |  | $ | 532.4 |  |  | $ | 1,013.9 |  |  | $ | 1,546.3 |

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- Definition Tabular disclosure of intangibles assets, in total and by major class, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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