Supplemental Guarantor Information - Condensed Consolidating Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
Revenue:
Uniform rental and facility services	$ 999,596	$ 938,408
Other	294,534	260,482
Equity in net income of affiliates	0	0
Total revenue	1,294,130	1,198,890
Costs and expenses (income):
Cost of uniform rental and facility services	540,932	518,503
Cost of other	169,424	156,243
Selling and administrative expenses	374,026	338,637
G&K Services, Inc. acquisition expenses	2,787	0
Operating income	206,961	185,507
Interest income	(65)	(119)
Interest expense (income)	14,172	16,412
Income before income taxes	192,854	169,214
Income taxes	54,763	63,016
Income from continuing operations	138,091	106,198
Income (loss) from discontinued operations, net of tax	0	(6,017)
Net income	138,091	100,181
Eliminations
Revenue:
Uniform rental and facility services	(44,489)	(39,198)
Other	(135,557)	(128,233)
Equity in net income of affiliates	(138,091)	(106,198)
Total revenue	(318,137)	(273,629)
Costs and expenses (income):
Cost of uniform rental and facility services	(65,910)	(58,722)
Cost of other	(109,497)	(99,597)
Selling and administrative expenses	(7,439)	(7,464)
G&K Services, Inc. acquisition expenses	0
Operating income	(135,291)	(107,846)
Interest income	0	0
Interest expense (income)	0	0
Income before income taxes	(135,291)	(107,846)
Income taxes	(26)	(25)
Income from continuing operations		(107,821)
Income (loss) from discontinued operations, net of tax		6,017
Net income	(135,265)	(101,804)
Cintas Corporation
Revenue:
Uniform rental and facility services	0	0
Other	0	0
Equity in net income of affiliates	138,091	106,198
Total revenue	138,091	106,198
Costs and expenses (income):
Cost of uniform rental and facility services	0	0
Cost of other	0	0
Selling and administrative expenses	0	0
G&K Services, Inc. acquisition expenses	0
Operating income	138,091	106,198
Interest income	0	0
Interest expense (income)	0	0
Income before income taxes	138,091	106,198
Income taxes	0	0
Income from continuing operations		106,198
Income (loss) from discontinued operations, net of tax		(6,017)
Net income	138,091	100,181
Corp. 2
Revenue:
Uniform rental and facility services	837,274	787,169
Other	410,248	372,611
Equity in net income of affiliates	0	0
Total revenue	1,247,522	1,159,780
Costs and expenses (income):
Cost of uniform rental and facility services	479,056	455,207
Cost of other	280,024	258,990
Selling and administrative expenses	411,934	369,693
G&K Services, Inc. acquisition expenses	0
Operating income	76,508	75,890
Interest income	0	0
Interest expense (income)	14,827	16,375
Income before income taxes	61,681	59,515
Income taxes	17,810	22,382
Income from continuing operations		37,133
Income (loss) from discontinued operations, net of tax		(5,323)
Net income	43,871	31,810
Subsidiary Guarantors
Revenue:
Uniform rental and facility services	149,148	136,425
Other	968	1,293
Equity in net income of affiliates	0	0
Total revenue	150,116	137,718
Costs and expenses (income):
Cost of uniform rental and facility services	90,672	86,198
Cost of other	(14,931)	(14,256)
Selling and administrative expenses	(50,734)	(41,472)
G&K Services, Inc. acquisition expenses	2,787
Operating income	122,322	107,248
Interest income	(17)	(48)
Interest expense (income)	(702)	38
Income before income taxes	123,041	107,258
Income taxes	35,526	39,403
Income from continuing operations		67,855
Income (loss) from discontinued operations, net of tax		0
Net income	87,515	67,855
Non- Guarantors
Revenue:
Uniform rental and facility services	57,663	54,012
Other	18,875	14,811
Equity in net income of affiliates	0	0
Total revenue	76,538	68,823
Costs and expenses (income):
Cost of uniform rental and facility services	37,114	35,820
Cost of other	13,828	11,106
Selling and administrative expenses	20,265	17,880
G&K Services, Inc. acquisition expenses	0
Operating income	5,331	4,017
Interest income	(48)	(71)
Interest expense (income)	47	(1)
Income before income taxes	5,332	4,089
Income taxes	1,453	1,256
Income from continuing operations		2,833
Income (loss) from discontinued operations, net of tax		(694)
Net income	$ 3,879	$ 2,139