Operating Segment Information (Tables)

12 Months Ended

May 31, 2017

Segment Reporting [Abstract]

Information Related to Operating Segments

Information related to the operations of Cintas' operating segments is set forth below:

(In thousands)	Uniform Rental and Facility Services		First Aid  and Safety Services		All Other		Corporate (1)			Total
May 31, 2017
Revenue	$	4,202,490	$	508,233	$	612,658	$	—		$	5,323,381
Gross margin	$	1,894,716	$	230,166	$	255,413	$	—		$	2,380,295
Selling and administrative expenses	1,138,345		177,378		211,657		—			1,527,380
G&K Services, Inc. transaction and    integration expenses	79,224									79,224
Interest expense, net	—		—		—		86,287			86,287
Income before income taxes	$	677,147	$	52,788	$	43,756	$	(86,287	)	$	687,404
Depreciation and amortization	$	156,998	$	19,962	$	17,905	$	1,730		$	196,595
Capital expenditures	$	232,832	$	26,863	$	12,645	$	977		$	273,317
Total assets	$	5,801,680	$	444,717	$	367,562	$	230,098		$	6,844,057
May 31, 2016
Revenue	$	3,759,524	$	461,783	$	574,465	$	—		$	4,795,772
Gross margin	$	1,666,691	$	197,010	$	237,639	$	—		$	2,101,340
Selling and administrative expenses	994,590		147,503		190,306		—			1,332,399
Interest expense, net	—		—		—		63,626			63,626
Income before income taxes	$	672,101	$	49,507	$	47,333	$	(63,626	)	$	705,315
Depreciation and amortization	$	130,421	$	16,021	$	16,879	$	1,958		$	165,279
Capital expenditures	$	237,871	$	22,364	$	14,840	$	310		$	275,385
Total assets	$	3,104,822	$	421,697	$	322,474	$	249,822		$	4,098,815
May 31, 2015
Revenue	$	3,519,199	$	326,593	$	523,885	$	—		$	4,369,677
Gross margin	$	1,526,534	$	152,339	$	214,050	$	—		$	1,892,923
Selling and administrative expenses	922,582		107,226		179,476		—			1,209,284
Gain on sale of stock of an equity    method investment	—		—		—		21,739			21,739
Interest expense, net	—		—		—		64,822			64,822
Income before income taxes	$	603,952	$	45,113	$	34,574	$	(43,083	)	$	640,556
Depreciation and amortization	$	123,129	$	9,774	$	16,909	$	2,783		$	152,595
Capital expenditures	$	184,200	$	13,589	$	18,528	$	1,403		$	217,720
Total assets	$	2,831,978	$	254,707	$	299,885	$	799,104		$	4,185,674

⁽¹⁾ Corporate assets include cash and marketable securities in all periods presented. Corporate assets as of May 31, 2017 and 2016 also include the assets of Discontinued Services. Corporate assets as of May 31, 2015 also include assets of Discontinued Services, Shred-it and real estate assets of Storage that were not included in the sale transactions.