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Acquisitions, Goodwill and Intangible Assets - Additional Information (Detail)
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12 Months Ended | 1 Months Ended | 0 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2013
USD ($)
Segment
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Dec. 31, 2012
USD ($)
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Dec. 31, 2013
Private Equity
USD ($)
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Dec. 31, 2013
Real Estate
USD ($)
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Dec. 31, 2013
Hedge Fund Solutions
USD ($)
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Dec. 31, 2013
Credit
USD ($)
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Dec. 31, 2013
Financial Advisory
USD ($)
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Aug. 05, 2013
Strategic Partners Fund Solutions
USD ($)
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Jan. 05, 2012
Harbourmaster
USD ($)
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Jan. 05, 2012
Harbourmaster
EUR (€)
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| Business Acquisition [Line Items] | ||||||||||
| Increase in goodwill | $ 83,800,000 | |||||||||
| Increase in intangible assets | 57,900,000 | |||||||||
| Purchase price in cash | 232,044,000 | 181,400,000 | ||||||||
| Acquisition-related costs | 2,100,000 | |||||||||
| Number of business segments | 5 | |||||||||
| Goodwill, carrying value | 1,787,392,000 | 1,703,602,000 | 778,300,000 | 421,700,000 | 172,100,000 | 346,400,000 | 68,900,000 | |||
| Expected amortization of intangibles, 2014 | 102,300,000 | |||||||||
| Expected amortization of intangibles, 2015 | 95,800,000 | |||||||||
| Expected amortization of intangibles, 2016 | 85,600,000 | |||||||||
| Expected amortization of intangibles, 2017 | 46,500,000 | |||||||||
| Expected amortization of intangibles, 2018 | $ 46,500,000 | |||||||||
| Intangible assets expected to amortize over a weighted-average period | 7 years 4 months 24 days | |||||||||