SEGMENT REPORTING - Adjusted Net Income (Parenthetical) (Detail) (Investment Management, USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investment Management
Segment Reporting, Asset Reconciling Item [Line Items]
Interest income	$ 3.2	$ 2.6	$ 2.3

Amount of interest income earned from interest bearing assets not separately disclosed.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration