Korn Ferry Annual report pursuant to Section 13 and 15(d)

Property And Equipment (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Property, Plant and Equipment [Line Items]
Depreciation expense for capitalized software	$ 4.0	$ 2.5	$ 2.3

For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.