Other Accrued Expenses (Details) - Schedule of accrued expenses (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Schedule of accrued expenses [Abstract]
Accrued payroll, payroll taxes and benefits	$ 45.8	$ 48.1
Accrued bonus and commissions	22.0	57.3
Accrued other taxes	29.3	42.8
Accrued advertising and promotions	38.2	36.1
Accrued income taxes	5.5	10.2
Accrued insurance	8.7	8.4
Other accrued expenses	30.0	30.6
Total accrued expenses	$ 179.5	$ 233.5