Leases	12 Months Ended
May 31, 2012
Leases [Abstract]
Leases	Leases Cintas conducts certain operations from leased facilities and leases certain equipment. Most leases contain renewal options for periods from 1 to 10 years. The lease agreements provide for increases in rent expense if the options are exercised based on increases in certain price level factors or other prearranged factors. Step rent provisions, escalation clauses, capital improvements funding and other lease concessions are taken into account in computing minimum lease payments. Minimum lease payments are recognized on a straight-line basis over the minimum lease term. Lease payments are not dependent on an existing index or rate and are not included in minimum lease payments. It is anticipated that expiring leases will be renewed or replaced. The minimum rental payments under noncancelable lease arrangements for each of the next five years and thereafter are $36.9 million, $30.8 million, $25.1 million, $20.1 million, $14.5 million and $60.2 million, respectively. Rent expense under operating leases during the fiscal years ended May 31, 2012, 2011 and 2010, was $48.7 million, $45.7 million and $38.0 million, respectively.

Leases

12 Months Ended

May 31, 2012

Cintas conducts certain operations from leased facilities and leases certain equipment. Most leases contain renewal options for periods from 1 to 10 years. The lease agreements provide for increases in rent expense if the options are exercised based on increases in certain price level factors or other prearranged factors. Step rent provisions, escalation clauses, capital improvements funding and other lease concessions are taken into account in computing minimum lease payments. Minimum lease payments are recognized on a straight-line basis over the minimum lease term. Lease payments are not dependent on an existing index or rate and are not included in minimum lease payments. It is anticipated that expiring leases will be renewed or replaced.

The minimum rental payments under noncancelable lease arrangements for each of the next five years and thereafter are $36.9 million, $30.8 million, $25.1 million, $20.1 million, $14.5 million and $60.2 million, respectively.

Rent expense under operating leases during the fiscal years ended May 31, 2012, 2011 and 2010, was $48.7 million, $45.7 million and $38.0 million, respectively.