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Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Goodwill | The following tables present the change in goodwill and components of acquired client relationships during the three months ended March 31, 2015:
|  | Goodwill
|  | Institutional |  | Mutual Fund |  | High Net Worth |  | Total
Balance, as of December 31, 2014 |  | $ | 1,159.1 |  |  | $ | 1,125.3 |  |  | $ | 368.4 |  |  | $ | 2,652.8 |
Goodwill acquired |  | — |  |  | — |  |  | — |  |  | — |
Foreign currency translation |  | (17.9 | ) |  | (3.5 | ) |  | (10.2 | ) |  | (31.6 | )
Balance, as of March 31, 2015 |  | $ | 1,141.2 |  |  | $ | 1,121.8 |  |  | $ | 358.2 |  |  | $ | 2,621.2 |
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, 2014 | $ | 1,255.1 |  |  | $ | (565.0 | ) |  | $ | 690.1 |  |  | $ | 1,088.3 |  |  | $ | 1,778.4 |
New investments | — |  |  | — |  |  | — |  |  | — |  |  | — |
Intangible amortization and impairments | — |  |  | (27.8 | ) |  | (27.8 | ) |  | — |  |  | (27.8 | )
Foreign currency translation | (5.1 | ) |  | — |  |  | (5.1 | ) |  | (20.8 | ) |  | (25.9 | )
Balance, as of March 31, 2015 | $ | 1,250.0 |  |  | $ | (592.8 | ) |  | $ | 657.2 |  |  | $ | 1,067.5 |  |  | $ | 1,724.7 |

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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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