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Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2014
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 nine months ended September 30, 2014:
|  | Goodwill
|  | Institutional |  | Mutual Fund |  | High Net Worth |  | Total
Balance, as of December 31, 2013 |  | $ | 1,076.3 |  |  | $ | 928.1 |  |  | $ | 337.3 |  |  | $ | 2,341.7 |
Goodwill acquired |  | 49.7 |  |  | 61.0 |  |  | 39.5 |  |  | 150.2 |
Foreign currency translation |  | (8.8 | ) |  | (3.2 | ) |  | (5.3 | ) |  | (17.3 | )
Balance, as of September 30, 2014 |  | $ | 1,117.2 |  |  | $ | 985.9 |  |  | $ | 371.5 |  |  | $ | 2,474.6 |
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, 2013 | $ | 1,039.5 |  |  | $ | (442.8 | ) |  | $ | 596.7 |  |  | $ | 864.0 |  |  | $ | 1,460.7 |
New Investments | 149.6 |  |  | — |  |  | 149.6 |  |  | 46.8 |  |  | 196.4 |
Intangible amortization and impairments | — |  |  | (84.2 | ) |  | (84.2 | ) |  | — |  |  | (84.2 | )
Foreign currency translation | (1.3 | ) |  | — |  |  | (1.3 | ) |  | (5.0 | ) |  | (6.3 | )
Balance, as of September 30, 2014 | $ | 1,187.8 |  |  | $ | (527.0 | ) |  | $ | 660.8 |  |  | $ | 905.8 |  |  | $ | 1,566.6 |

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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=14024403&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=14024403&loc=d3e13854-109267 + Details
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