Supplemental Guarantor Information (Details) (USD $)	3 Months Ended		9 Months Ended
	Feb. 29, 2012	Feb. 28, 2011	Feb. 29, 2012	Feb. 28, 2011
Supplemental Guarantor Information
Long-term notes	$ 1,275,000,000		$ 1,275,000,000
Revenue:
Rental uniforms and ancillary products	721,012,000	664,976,000	2,163,224,000	1,980,387,000
Other services	291,100,000	272,851,000	885,194,000	817,910,000
Total revenue	1,012,112,000	937,827,000	3,048,418,000	2,798,297,000
Costs and expenses (income):
Cost of rental uniforms and ancillary products	409,958,000	380,224,000	1,223,611,000	1,129,210,000
Cost of other services	176,251,000	165,682,000	530,067,000	492,847,000
Selling and administrative expenses	288,367,000	283,045,000	895,945,000	864,774,000
Operating income	137,536,000	108,876,000	398,795,000	311,466,000
Interest income	(373,000)	(280,000)	(1,141,000)	(1,252,000)
Interest expense (income)	17,219,000	12,520,000	52,281,000	36,955,000
Income before income taxes	120,690,000	96,636,000	347,655,000	275,763,000
Income taxes	44,655,000	37,566,000	128,632,000	99,550,000
Net income	76,035,000	59,070,000	219,023,000	176,213,000
Cintas Corporation
Revenue:
Equity in net income of affiliates	76,035,000	59,070,000	219,023,000	176,213,000
Total revenue	76,035,000	59,070,000	219,023,000	176,213,000
Costs and expenses (income):
Operating income	76,035,000	59,070,000	219,023,000	176,213,000
Income before income taxes	76,035,000	59,070,000	219,023,000	176,213,000
Net income	76,035,000	59,070,000	219,023,000	176,213,000
Corp. 2
Revenue:
Rental uniforms and ancillary products	550,167,000	509,321,000	1,662,058,000	1,522,229,000
Other services	361,849,000	330,075,000	1,087,507,000	1,002,435,000
Total revenue	912,016,000	839,396,000	2,749,565,000	2,524,664,000
Costs and expenses (income):
Cost of rental uniforms and ancillary products	350,615,000	326,000,000	1,053,496,000	978,149,000
Cost of other services	240,568,000	211,754,000	698,073,000	651,265,000
Selling and administrative expenses	286,257,000	264,019,000	828,080,000	789,686,000
Operating income	34,576,000	37,623,000	169,916,000	105,564,000
Interest income	(54,000)	(140,000)	(211,000)	(494,000)
Interest expense (income)	17,559,000	13,002,000	53,148,000	38,413,000
Income before income taxes	17,071,000	24,761,000	116,979,000	67,645,000
Income taxes	7,114,000	9,923,000	44,011,000	23,093,000
Net income	9,957,000	14,838,000	72,968,000	44,552,000
Subsidiary Guarantors
Revenue:
Rental uniforms and ancillary products	141,867,000	129,038,000	425,455,000	393,250,000
Other services	8,504,000	98,708,000	40,176,000	357,282,000
Total revenue	150,371,000	227,746,000	465,631,000	750,532,000
Costs and expenses (income):
Cost of rental uniforms and ancillary products	80,270,000	75,562,000	248,561,000	232,115,000
Cost of other services	(5,902,000)	88,918,000	(4,168,000)	306,777,000
Selling and administrative expenses	(17,100,000)	(1,666,000)	6,297,000	15,086,000
Operating income	93,103,000	64,932,000	214,941,000	196,554,000
Interest income	(280,000)	(97,000)	(518,000)	(567,000)
Interest expense (income)	(333,000)	(498,000)	(1,214,000)	(1,488,000)
Income before income taxes	93,716,000	65,527,000	216,673,000	198,609,000
Income taxes	36,109,000	26,931,000	81,518,000	67,801,000
Net income	57,607,000	38,596,000	135,155,000	130,808,000
Non-Guarantors
Revenue:
Rental uniforms and ancillary products	52,652,000	49,677,000	156,511,000	143,484,000
Other services	27,785,000	27,289,000	86,425,000	78,806,000
Total revenue	80,437,000	76,966,000	242,936,000	222,290,000
Costs and expenses (income):
Cost of rental uniforms and ancillary products	35,984,000	33,991,000	107,163,000	96,549,000
Cost of other services	17,532,000	17,490,000	53,662,000	49,007,000
Selling and administrative expenses	22,926,000	23,555,000	71,391,000	65,402,000
Operating income	3,995,000	1,930,000	10,720,000	11,332,000
Interest income	(202,000)	(43,000)	(575,000)	(100,222,000)
Interest expense (income)	(7,000)	16,000	347,000	30,000
Income before income taxes	4,204,000	1,957,000	10,948,000	111,524,000
Income taxes	1,438,000	717,000	3,121,000	8,658,000
Net income	2,766,000	1,240,000	7,827,000	102,866,000
Eliminations
Revenue:
Rental uniforms and ancillary products	(23,674,000)	(23,060,000)	(80,800,000)	(78,576,000)
Other services	(107,038,000)	(183,221,000)	(328,914,000)	(620,613,000)
Equity in net income of affiliates	(76,035,000)	(59,070,000)	(219,023,000)	(176,213,000)
Total revenue	(206,747,000)	(265,351,000)	(628,737,000)	(875,402,000)
Costs and expenses (income):
Cost of rental uniforms and ancillary products	(56,911,000)	(55,329,000)	(185,609,000)	(177,603,000)
Cost of other services	(75,947,000)	(152,480,000)	(217,500,000)	(514,202,000)
Selling and administrative expenses	(3,716,000)	(2,863,000)	(9,823,000)	(5,400,000)
Operating income	(70,173,000)	(54,679,000)	(215,805,000)	(178,197,000)
Interest income	163,000		163,000	100,031,000
Income before income taxes	(70,336,000)	(54,679,000)	(215,968,000)	(278,228,000)
Income taxes	(6,000)	(5,000)	(18,000)	(2,000)
Net income	$ (70,330,000)	$ (54,674,000)	$ (215,950,000)	$ (278,226,000)