Annual report pursuant to Section 13 and 15(d)

Business Combinations (Details)

 v2.3.0.11
Business Combinations (Details) (USD $)
In Millions, unless otherwise specified
May 31, 2011
Feb. 08, 2011
Sure Payroll Inc [Member]
May 03, 2011
E Plan Services Inc [Member]
Business Acquisition [Line Items]      
Business Acquisitions   $ 114.9 $ 15.2
Business Acquisitions, goodwill   $ 84.6 $ 7.5
Business Combinations (Textuals) [Abstract]      
Number of businesses acquired by company 2