Organization and Basis of Presentation (Details)	6 Months Ended
Jan. 31, 2013 Discipline Country Project
Organization and Basis of Presentation [Abstract]
Number of Disciplines	85
Projects for clients	50,000
Number of countries	122

The number of countries in which the entity operates as of balance sheet date.

No definition available.

Name:	us-gaap_NumberOfCountriesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant