Other Accrued Expenses (Details) - Schedule of accrued expenses (USD $) In Millions, unless otherwise specified	Nov. 30, 2014	May 31, 2014	Nov. 30, 2013
Schedule of accrued expenses [Abstract]
Accrued payroll, payroll taxes and benefits	$ 44.6	$ 41.7	$ 44.8
Accrued bonus and commissions	24.1	36.9	21.4
Accrued other taxes	28.7	27.5	28.4
Accrued advertising and promotions	37.2	35.6	39.6
Accrued income taxes	17.8	4.7	11.4
Accrued insurance	7.9	8.3	7.8
Other accrued expenses	33.6	30.0	30.6
Total accrued expenses	$ 193.9	$ 184.7	$ 184.0