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Intangible Assets (Tables) | 6 Months Ended
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Jun. 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 six months ended June 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 |  | 49.6 |  |  | 60.9 |  |  | 39.5 |  |  | 150.0 |
Foreign currency translation |  | (0.9 | ) |  | 0.6 |  |  | (0.4 | ) |  | (0.7 | )
Balance, as of June 30, 2014 |  | $ | 1,125.0 |  |  | $ | 989.6 |  |  | $ | 376.4 |  |  | $ | 2,491.0 |
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 | 149.1 |  |  | — |  |  | 149.1 |  |  | 46.8 |  |  | 195.9 |
Amortization and impairments | — |  |  | (55.5 | ) |  | (55.5 | ) |  | — |  |  | (55.5 | )
Foreign currency translation | 0.4 |  |  | — |  |  | 0.4 |  |  | 8.1 |  |  | 8.5 |
Balance, as of June 30, 2014 | $ | 1,189.0 |  |  | $ | (498.3 | ) |  | $ | 690.7 |  |  | $ | 918.9 |  |  | $ | 1,609.6 |

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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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