Supplemental Guarantor Information - Consolidating Condensed Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2017	Feb. 29, 2016
Revenue:
Uniform rental and facility services	$ 993,398	$ 936,565	$ 2,998,559	$ 2,812,677
Other	287,737	279,518	873,629	821,376
Equity in net income of affiliates	0	0	0	0
Total revenue	1,281,135	1,216,083	3,872,188	3,634,053
Costs and expenses (income):
Cost of uniform rental and facility services	546,538	524,656	1,643,222	1,569,250
Cost of other	168,173	166,819	507,341	488,651
Selling and administrative expenses	362,385	331,656	1,101,633	997,344
G&K Services, Inc. transaction expenses	9,344	0	15,478	0
Operating income	194,695	192,952	604,514	578,808
Interest income	(11)	(335)	(107)	(565)
Interest expense (income)	13,696	16,163	41,135	48,746
Income before income taxes	181,010	177,124	563,486	530,627
Income taxes	62,363	59,845	183,294	191,697
Income from continuing operations	118,647	117,279	380,192	338,930
(Loss) income from discontinued operations, net of tax	(642)	62	16,281	223,692
Net income	118,005	117,341	396,473	562,622
Eliminations
Revenue:
Uniform rental and facility services	(37,583)	(36,421)	(125,445)	(114,682)
Other	(132,882)	(126,592)	(407,254)	(385,962)
Equity in net income of affiliates	(118,005)	(117,279)	(396,473)	(338,930)
Total revenue	(288,470)	(280,292)	(929,172)	(839,574)
Costs and expenses (income):
Cost of uniform rental and facility services	(58,616)	(57,259)	(188,353)	(174,370)
Cost of other	(105,440)	(97,151)	(326,648)	(303,026)
Selling and administrative expenses	(6,802)	(6,855)	(21,181)	(19,051)
G&K Services, Inc. transaction expenses	0		0
Operating income	(117,612)	(119,027)	(392,990)	(343,127)
Interest income	1	2	2	2
Interest expense (income)	0	0	0	0
Income before income taxes	(117,613)	(119,029)	(392,992)	(343,129)
Income taxes	(20)	(29)	(75)	(82)
Income from continuing operations	(117,593)	(119,000)	(392,917)	(343,047)
(Loss) income from discontinued operations, net of tax	0	(62)	0	(223,692)
Net income	(117,593)	(119,062)	(392,917)	(566,739)
Cintas Corporation
Revenue:
Uniform rental and facility services	0	0	0	0
Other	0	0	0	0
Equity in net income of affiliates	118,005	117,279	396,473	338,930
Total revenue	118,005	117,279	396,473	338,930
Costs and expenses (income):
Cost of uniform rental and facility services	0	0	0	0
Cost of other	0	0	0	0
Selling and administrative expenses	0	0	0	0
G&K Services, Inc. transaction expenses	0		0
Operating income	118,005	117,279	396,473	338,930
Interest income	0	0	0	0
Interest expense (income)	0	0	0	0
Income before income taxes	118,005	117,279	396,473	338,930
Income taxes	0	0	0	0
Income from continuing operations	118,005	117,279	396,473	338,930
(Loss) income from discontinued operations, net of tax	0	62	0	223,692
Net income	118,005	117,341	396,473	562,622
Corp. 2
Revenue:
Uniform rental and facility services	826,606	784,876	2,505,322	2,358,431
Other	403,650	390,207	1,225,276	1,157,078
Equity in net income of affiliates	0	0	0	0
Total revenue	1,230,256	1,175,083	3,730,598	3,515,509
Costs and expenses (income):
Cost of uniform rental and facility services	476,004	460,124	1,442,713	1,377,174
Cost of other	280,600	270,627	847,992	807,458
Selling and administrative expenses	399,769	364,555	1,213,418	1,099,373
G&K Services, Inc. transaction expenses	0		0
Operating income	73,883	79,777	226,475	231,504
Interest income	(2)	(7)	(2)	(19)
Interest expense (income)	14,981	16,350	44,336	49,152
Income before income taxes	58,904	63,434	182,141	182,371
Income taxes	20,197	21,223	59,541	64,101
Income from continuing operations	38,707	42,211	122,600	118,270
(Loss) income from discontinued operations, net of tax	(1,098)	74	13,884	229,355
Net income	37,609	42,285	136,484	347,625
Subsidiary Guarantors
Revenue:
Uniform rental and facility services	147,293	137,347	446,327	410,479
Other	297	951	1,898	2,981
Equity in net income of affiliates	0	0	0	0
Total revenue	147,590	138,298	448,225	413,460
Costs and expenses (income):
Cost of uniform rental and facility services	92,273	87,735	277,268	260,635
Cost of other	(19,449)	(18,056)	(53,929)	(50,603)
Selling and administrative expenses	(51,465)	(43,503)	(150,455)	(134,457)
G&K Services, Inc. transaction expenses	9,344		15,478
Operating income	116,887	112,122	359,863	337,885
Interest income	(6)	(262)	(30)	(378)
Interest expense (income)	(1,193)	(207)	(3,071)	(425)
Income before income taxes	118,086	112,591	362,964	338,688
Income taxes	40,474	37,533	118,652	119,044
Income from continuing operations	77,612	75,058	244,312	219,644
(Loss) income from discontinued operations, net of tax	447	0	447	0
Net income	78,059	75,058	244,759	219,644
Non- Guarantors
Revenue:
Uniform rental and facility services	57,082	50,763	172,355	158,449
Other	16,672	14,952	53,709	47,279
Equity in net income of affiliates	0	0	0	0
Total revenue	73,754	65,715	226,064	205,728
Costs and expenses (income):
Cost of uniform rental and facility services	36,877	34,056	111,594	105,811
Cost of other	12,462	11,399	39,926	34,822
Selling and administrative expenses	20,883	17,459	59,851	51,479
G&K Services, Inc. transaction expenses	0		0
Operating income	3,532	2,801	14,693	13,616
Interest income	(4)	(68)	(77)	(170)
Interest expense (income)	(92)	20	(130)	19
Income before income taxes	3,628	2,849	14,900	13,767
Income taxes	1,712	1,118	5,176	8,634
Income from continuing operations	1,916	1,731	9,724	5,133
(Loss) income from discontinued operations, net of tax	9	(12)	1,950	(5,663)
Net income	$ 1,925	$ 1,719	$ 11,674	$ (530)