Supplemental Guarantor Information (Income statement Details) (USD $)	3 Months Ended
	Aug. 31, 2011	Aug. 31, 2010
Supplemental Guarantor Information
Long-term notes	$ 1,275,000,000
Revenue:
Rental uniforms and ancillary products	719,423,000	657,564,000
Other services	297,757,000	266,340,000
Total revenue	1,017,180,000	923,904,000
Costs and expenses (income):
Cost of rental uniforms and ancillary products	403,406,000	371,515,000
Cost of other services	174,734,000	158,718,000
Selling and administrative expenses	310,466,000	293,425,000
Operating income	128,574,000	100,246,000
Interest income	(365,000)	(578,000)
Interest expense (income)	17,334,000	12,274,000
Income before income taxes	111,605,000	88,550,000
Income taxes	42,967,000	27,273,000
Net income	68,638,000	61,277,000
Cintas Corporation
Revenue:
Equity in net income of affiliates	68,638,000	61,277,000
Total revenue	68,638,000	61,277,000
Costs and expenses (income):
Operating income	68,638,000	61,277,000
Income before income taxes	68,638,000	61,277,000
Net income	68,638,000	61,277,000
Corp. 2
Revenue:
Rental uniforms and ancillary products	553,748,000	507,351,000
Other services	357,732,000	330,945,000
Total revenue	911,480,000	838,296,000
Costs and expenses (income):
Cost of rental uniforms and ancillary products	346,775,000	323,132,000
Cost of other services	220,833,000	213,714,000
Selling and administrative expenses	275,617,000	274,209,000
Operating income	68,255,000	27,241,000
Interest income	(80,000)	(195,000)
Interest expense (income)	17,776,000	12,598,000
Income before income taxes	50,559,000	14,838,000
Income taxes	18,666,000	3,509,000
Net income	31,893,000	11,329,000
Subsidiary Guarantors
Revenue:
Rental uniforms and ancillary products	141,915,000	132,234,000
Other services	17,161,000	121,910,000
Total revenue	159,076,000	254,144,000
Costs and expenses (income):
Cost of rental uniforms and ancillary products	84,352,000	79,581,000
Cost of other services	(2,060,000)	102,792,000
Selling and administrative expenses	15,995,000	378,000
Operating income	60,789,000	71,393,000
Interest income	(127,000)	(281,000)
Interest expense (income)	(448,000)	(322,000)
Income before income taxes	61,364,000	71,996,000
Income taxes	22,656,000	17,027,000
Net income	38,708,000	54,969,000
Non-Guarantors
Revenue:
Rental uniforms and ancillary products	52,583,000	46,380,000
Other services	29,802,000	22,780,000
Total revenue	82,385,000	69,160,000
Costs and expenses (income):
Cost of rental uniforms and ancillary products	35,909,000	29,820,000
Cost of other services	17,825,000	14,200,000
Selling and administrative expenses	22,284,000	19,987,000
Operating income	6,367,000	5,153,000
Interest income	(158,000)	(100,133,000)
Interest expense (income)	6,000	(2,000)
Income before income taxes	6,519,000	105,288,000
Income taxes	1,647,000	6,732,000
Net income	4,872,000	98,556,000
Eliminations
Revenue:
Rental uniforms and ancillary products	(28,823,000)	(28,401,000)
Other services	(106,938,000)	(209,295,000)
Equity in net income of affiliates	(68,638,000)	(61,277,000)
Total revenue	(204,399,000)	(298,973,000)
Costs and expenses (income):
Cost of rental uniforms and ancillary products	(63,630,000)	(61,018,000)
Cost of other services	(61,864,000)	(171,988,000)
Selling and administrative expenses	(3,430,000)	(1,149,000)
Operating income	(75,475,000)	(64,818,000)
Interest income		100,031,000
Income before income taxes	(75,475,000)	(164,849,000)
Income taxes	(2,000)	5,000
Net income	$ (75,473,000)	$ (164,854,000)