The carrying amount of assets an investment adviser manages on behalf of investors.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

+ Details

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- Definition

Assets Under Management, Carrying Amount, Liquidity Strategies

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

Assets under Management, Carrying Amount, Long Term

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Business Combinations - Additional Information (Detail) - USD ($) $ in Millions			3 Months Ended
	Jun. 30, 2018	Jun. 01, 2017	Mar. 31, 2018
Business Acquisition [Line Items]
Purchase price, cash			$ 471.4
RidgeWorth
Business Acquisition [Line Items]
Assets under management		$ 40,100.0
Long term assets under management		35,700.0
Liquidity strategy assets under management		4,400.0
Purchase price		547.1
Consolidated entity excluding consolidated investment products \| RidgeWorth
Business Acquisition [Line Items]
Purchase price		485.2
CLOs \| RidgeWorth
Business Acquisition [Line Items]
Purchase price		$ 61.9
Forecast \| Sustainable Growth Advisers, LP
Business Acquisition [Line Items]
Purchase price, cash	$ 129.5