Annual report pursuant to Section 13 and 15(d)

Business Segments - Additional Information (Detail)

v2.4.0.6
Business Segments - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Apr. 30, 2013
Segment
Apr. 30, 2012
Futurestep
Apr. 30, 2011
Futurestep
Apr. 30, 2012
Executive Recruitment
Apr. 30, 2011
Executive Recruitment
Segment Reporting Information [Line Items]          
Increase (decrease) in operating income   $ 2.2 $ 2.0 $ (2.2) $ (2.0)
Number of business segments 3