Variable Interest Entities (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014
Westwood Funds
Variable Interest Entities
Assets Under Management	$ 3,290
Corporate Investment	3.5
Risk of Loss	3.5
Common Trust Funds
Variable Interest Entities
Assets Under Management	2,737
Corporate Investment	2.1
Risk of Loss	2.1
Collective Investment Trusts
Variable Interest Entities
Assets Under Management	324
LLCs
Variable Interest Entities
Assets Under Management	262
UCITS Fund
Variable Interest Entities
Assets Under Management	$ 839