Cintas (CTAS) 10-Q 10 Oct 13 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Aug. 31, 2013	Sep. 30, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	CINTAS CORP
Entity Central Index Key	723254
Document Type	10-Q
Document Period End Date	31-Aug-13
Amendment Flag	FALSE
Current Fiscal Year End Date	-26
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		119,889,137
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1

Consolidated_Condensed_Stateme

Consolidated Condensed Statements of Income (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Revenue:
Rental uniforms and ancillary products	$792,866	$754,843
Other services	327,477	296,482
Total revenue	1,120,343	1,051,325
Costs and expenses:
Cost of rental uniforms and ancillary products	454,731	428,148
Cost of other services	199,632	177,302
Selling and administrative expenses	325,910	306,581
Operating income	140,070	139,294
Interest income	-68	-77
Interest expense	16,523	16,598
Income before income taxes	123,615	122,773
Income taxes	45,861	46,040
Net income	$77,754	$76,733
Basic earnings per share (dollars per share)	$0.63	$0.61
Diluted earnings per share (dollars per share)	$0.63	$0.60

Consolidated_Condensed_Stateme1

Consolidated Condensed Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013		Aug. 31, 2012
Net income	$77,754		$76,733
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	-646		7,017
Change in fair value of derivatives	0	[1]	-151	[1]
Amortization of interest rate lock agreements	488	[2]	488	[2]
Change in fair value of available-for-sale securities	-14	[3]	-2	[3]
Other comprehensive (loss) income	-172		7,352
Comprehensive income	$77,582		$84,085
[1]	Net of less than $0.1 million of tax expense for the three months ended August 31, 2012
[2]	Net of less than $0.1 million of tax benefit for the three months ended August 31, 2013 and 2012, respectively.
[3]	Net of less than $0.1 million of tax expense for the three months ended August 31, 2013 and 2012, respectively.

Consolidated_Condensed_Stateme2

Consolidated Condensed Statements of Comprehensive Income (Unaudited) (Parenthetical) (Less Than [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Aug. 31, 2013	Feb. 29, 2012
Less Than [Member]
Change in fair value of derivative, tax expense	$0	$0.10
Amortization of interest rate lock agreements, tax expense (benefit)	-0.1	-0.1
Change in fair value of available-for-sale securities, tax expense (benefit)	$0.10	$0.10

Consolidated_Condensed_Balance

Consolidated Condensed Balance Sheets (Unaudited) (USD $)	Aug. 31, 2013	31-May-13
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$278,670	$352,273
Marketable securities	4,189	5,680
Accounts receivable, net	511,642	496,049
Inventories, net	245,470	240,440
Uniforms and other rental items in service	500,384	496,752
Income taxes, current	0	9,102
Prepaid expenses	31,934	24,530
Total current assets	1,572,289	1,624,826
Property and equipment, at cost, net	991,331	986,703
Goodwill	1,531,006	1,517,560
Service contracts, net	93,119	92,153
Other assets, net	123,432	124,390
Total assets	4,311,177	4,345,632
Current liabilities:
Accounts payable	124,952	121,029
Accrued compensation and related liabilities	43,247	78,050
Accrued liabilities	235,237	271,821
Income taxes, current	23,367	0
Deferred tax liability	80,692	77,169
Long-term debt due within one year	8,200	8,187
Total current liabilities	515,695	556,256
Long-term liabilities:
Long-term debt due after one year	1,300,799	1,300,979
Deferred income taxes	214,221	210,483
Accrued liabilities	84,451	76,422
Total long-term liabilities	1,599,471	1,587,884
Shareholders’ equity:
Preferred stock, no par value: 100,000 shares authorized, none outstanding	0	0
Common stock, no par value: 425,000,000 shares authorized, FY 2014: 175,492,504 issued and 120,778,629 outstanding; FY 2013: 174,786,010 issued and 122,281,507 outstanding	217,107	186,332
Paid-in capital	102,961	109,822
Retained earnings	3,795,525	3,717,771
Treasury stock: FY 2014: 54,713,875 shares; FY 2013: 52,504,503 shares	-1,957,533	-1,850,556
Accumulated other comprehensive income	37,951	38,123
Total shareholders’ equity	2,196,011	2,201,492
Total liabilities and shareholders' equity	$4,311,177	$4,345,632

Consolidated_Condensed_Balance1

Consolidated Condensed Balance Sheets (Unaudited) (Parenthetical) (USD $)	Aug. 31, 2013	31-May-13
Statement of Financial Position [Abstract]
Preferred stock, no par value (dollars per share)	$0	$0
Preferred stock, shares authorized (shares)	100,000	100,000
Preferred stock, shares outstanding (shares)	0	0
Common stock, no par value (dollars per share)	$0	$0
Common stock, shares authorized (shares)	425,000,000	425,000,000
Common stock, shares issued (shares)	175,492,504	174,786,010
Common stock, shares outstanding (shares)	120,778,629	122,281,507
Treasury stock, shares (shares)	54,713,875	52,504,503

Consolidated_Condensed_Stateme3

Consolidated Condensed Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Cash flows from operating activities:
Net income	$77,754	$76,733
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	42,571	40,342
Amortization of intangible assets	5,823	6,100
Stock-based compensation	6,984	5,448
Deferred income taxes	7,373	9,716
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	-14,903	-7,128
Inventories, net	-5,258	9,889
Uniforms and other rental items in service	-4,150	-8,672
Prepaid expenses	-7,216	-5,392
Accounts payable	2,915	16,278
Accrued compensation and related liabilities	-34,777	-50,793
Accrued liabilities	-27,215	-27,400
Income taxes payable	32,658	29,744
Net cash provided by operating activities	82,559	94,865
Cash flows from investing activities:
Capital expenditures	-37,462	-47,438
Proceeds from redemption of marketable securities	35,233	24,720
Purchase of marketable securities and investments	-32,941	-36,970
Acquisitions of businesses, net of cash acquired	-32,216	-2,130
Other, net	382	577
Net cash used in investing activities	-67,004	-61,241
Cash flows from financing activities:
Proceeds from issuance of debt	0	250,000
Repayment of debt	-167	-225,154
Proceeds from exercise of stock-based compensation awards	14,085	1,119
Repurchase of common stock	-106,977	-77,953
Other, net	4,126	-3,491
Net cash used in financing activities	-88,933	-55,479
Effect of exchange rate changes on cash and cash equivalents	-225	1,247
Net decrease in cash and cash equivalents	-73,603	-20,608
Cash and cash equivalents at beginning of period	352,273	339,825
Cash and cash equivalents at end of period	$278,670	$319,217

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Aug. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation
	The consolidated condensed financial statements of Cintas Corporation (Cintas, the Company, we, us or our) included herein have been prepared by Cintas, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (SEC).  Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to such rules and regulations.  While we believe that the disclosures are adequately presented, it is suggested that these consolidated condensed financial statements be read in conjunction with the consolidated financial statements and notes included in our Annual Report on Form 10-K for the fiscal year ended May 31, 2013.  A summary of our significant accounting policies is presented beginning on page 35 of that report.  There have been no material changes in the accounting policies followed by Cintas during the current fiscal year.
	Interim results are subject to variations and are not necessarily indicative of the results of operations for a full fiscal year.  In the opinion of management, adjustments (which include only normal recurring adjustments) necessary for a fair statement of the consolidated results of the interim periods shown have been made.
	As disclosed in our Annual Report on Form 10-K for the fiscal year ended May 31, 2013, inventories are valued at the lower of cost (first-in, first-out) or market.  Inventory is comprised of the following amounts:
	(In thousands)	August 31,		May 31,
		2013		2013
	Raw materials	$	17,389	$	19,800
	Work in process	15,712		17,353
	Finished goods	212,369		203,287
		$	245,470	$	240,440

New_Accounting_Pronouncements

New Accounting Pronouncements	3 Months Ended
	Aug. 31, 2013
Accounting Policies [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements
	In February 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2013-02, "Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income." ASU 2013-02 requires an entity to present (either on the face of the statement where net income is presented or in the notes) the effects on the line items of net income of significant amounts reclassified out of accumulated other comprehensive income if the item reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For reclassification items not required under GAAP to be reclassified directly to net income in their entirety in the same reporting period, an entity is required to cross-reference to other disclosures currently required under GAAP that provide additional detail about those amounts. ASU 2013-02 applies to all public and private companies that report items of other comprehensive income. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012, with prospective adoption required. The Company adopted ASU 2013-02 effective June 1, 2013. See Note 9 entitled Accumulated Other Comprehensive Income (Loss) of "Notes to Consolidated Condensed Financial Statements" for details of required disclosure.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Aug. 31, 2013
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	FASB Accounting Standard Codification (ASC) Topic 820 defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date.  It also establishes a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows:
	Level 1 –    Quoted prices in active markets for identical assets or liabilities.
	Level 2 –   Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
	Level 3 –   Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.
	In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. Cintas’ assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.
	In order to meet the requirements of ASC 820, Cintas utilizes two basic valuation approaches to determine the fair value of its assets and liabilities required to be recorded on a recurring basis at fair value. The first approach is the cost approach. The cost approach is generally the value a market participant would expect to replace the respective asset or liability. The second approach is the market approach. The market approach looks at what a market participant would consider valuing an exact or similar asset or liability to that of Cintas, including those traded on exchanges.
	All financial instruments that are measured at fair value on a recurring basis (at least annually) have been segregated into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the consolidated balance sheet date.  These financial instruments measured at fair value on a recurring basis are summarized below:
	(In thousands)	As of August 31, 2013
		Level 1		Level 2		Level 3		Fair Value
	Cash and cash equivalents	$	278,670	$	—	$	—	$	278,670
	Marketable securities:
	Canadian treasury securities	—		4,189		—		4,189
	Total assets at fair value	$	278,670	$	4,189	$	—	$	282,859
	Current accrued liabilities	$	—	$	107	$	—	$	107
	Total liabilities at fair value	$	—	$	107	$	—	$	107
	(In thousands)	As of May 31, 2013
		Level 1		Level 2		Level 3		Fair Value
	Cash and cash equivalents	$	352,273	$	—	$	—	$	352,273
	Marketable securities:
	U.S. municipal bonds	—		5,680		—		5,680
	Accounts receivable, net	—		39		—		39
	Total assets at fair value	$	352,273	$	5,719	$	—	$	357,992
	Cintas’ cash and cash equivalents and marketable securities are generally classified within Level 1 or Level 2 of the fair value hierarchy. Financial instruments classified as Level 1 are based on quoted market prices in active markets, and financial instruments classified as Level 2 are based on quoted market prices in non-active markets, broker or dealer quotations or alternative pricing sources with reasonable levels of price transparency. The types of financial instruments Cintas classifies within Level 1 include most bank deposits and money market securities. Cintas does not adjust the quoted market price for such financial instruments.
	The types of financial instruments Cintas classifies within Level 2 include Canadian treasury securities (federal) and highly rated U.S. state or municipal bonds. The valuation technique used for Cintas’ marketable securities classified within Level 2 of the fair value hierarchy is primarily the market approach. The primary inputs to value Cintas’ marketable securities is the respective instruments future cash flows based on its stated yield and the amount a market participant would pay for a similar instrument. Primarily all of Cintas’ marketable securities are actively traded and the recorded fair value reflects current market conditions. However, due to the inherent volatility in the investment market, there is at least a possibility that recorded investment values may change in the near term.
	The funds invested in Canadian marketable securities are not presently expected to be repatriated, but instead are expected to be invested indefinitely in foreign subsidiaries. Interest, realized gains and losses and declines in value determined to be other than temporary on available-for-sale securities are included in interest income or expense. The cost of the securities sold is based on the specific identification method. The amortized cost basis of the marketable securities were $4.2 million and $5.7 million as of August 31, 2013 and May 31, 2013, respectively. All outstanding marketable securities at August 31, 2013 and May 31, 2013 had contractual maturities due within one year.
	As of August 31, 2013, current accrued liabilities include foreign currency forward contracts. As of May 31, 2013, accounts receivable, net include foreign currency forward contracts. The fair value of Cintas' foreign currency forward contracts are based on similar exchange traded derivatives (market approach) and are, therefore, included within Level 2 of the fair value hierarchy.
	The methods described above may produce a fair value that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while Cintas believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the consolidated balance sheet date.
	Cintas’ non-financial assets and liabilities not permitted or required to be measured at fair value on a recurring basis primarily relate to assets and liabilities acquired in a business acquisition. Cintas is required to provide additional disclosures about fair value measurements as part of the consolidated financial statements for each major category of assets and liabilities measured at fair value on a non-recurring basis (including business acquisitions), if material. Based on the nature of Cintas’ business acquisitions, which occur regularly throughout the fiscal year, the majority of the assets acquired and liabilities assumed consist of working capital, primarily valued using Level 2 inputs, property and equipment, also primarily valued using Level 2 inputs and goodwill and other identified intangible assets valued using Level 3 inputs. In general, non-recurring fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities, which generally are not applicable to non-financial assets and liabilities. Fair values determined by Level 2 inputs utilize data points that are observable, such as definitive sales agreements, appraisals or established market values of comparable assets. Fair values determined by Level 3 inputs are unobservable data points for the asset or liability and include situations where there is little, if any, market activity for the asset or liability, such as internal estimates of future cash flows and Company specific discount rates.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Aug. 31, 2013
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share
	The following table sets forth the computation of basic and diluted earnings per share using the two-class method for amounts attributable to Cintas’ common shares:
		Three Months Ended
	(In thousands except per share data)	August 31,		August 31,
		2013		2012
	Basic Earnings per Share
	Net income	$	77,754	$	76,733
	Less: net income allocated to participating unvested securities	460		365
	Net income available to common shareholders	$	77,294	$	76,368
	Basic weighted average common shares outstanding	122,130		126,110
	Basic earnings per common share	$	0.63	$	0.61
	Diluted Earnings per Share
	Net income	$	77,754	$	76,733
	Less: net income allocated to participating unvested securities	460		365
	Net income available to common shareholders	$	77,294	$	76,368
	Basic weighted average common shares outstanding	122,130		126,110
	Effect of dilutive securities – employee stock options	762		348
	Diluted weighted average common shares outstanding	122,892		126,458
	Diluted earnings per share	$	0.63	$	0.6
	For the three months ended August 31, 2013 and 2012, 0.6 million and 0.8 million options granted to purchase shares of Cintas common stock were excluded from the computation of diluted earnings per share, respectively. The exercise prices of these options were greater than the average market price of the common stock (anti-dilutive).
	On October 18, 2011, we announced that the Board of Directors authorized a $500.0 million share buyback program. On July 30, 2013, we announced that the Board of Directors authorized a new $500.0 million share buyback program, which does not have an expiration date. In the three months ended August 31, 2013, we purchased 2.1 million shares of Cintas common stock for a total purchase price of $100.8 million. In the period subsequent to August 31, 2013 through October 10, 2013, we purchased 0.9 million shares of Cintas common stock for $46.3 million. From the inception of the October 18, 2011 share buyback program through October 10, 2013, Cintas has purchased a total of 11.4 million shares of Cintas common stock at an average price of $42.44 for a total purchase price of $484.6 million. In addition, for the three months ended August 31, 2013, Cintas acquired 0.1 million shares of Cintas common stock for employee payroll taxes due on restricted stock awards that vested during the three months ended August 31, 2013. These shares were acquired at an average price of $47.67 per share for a total purchase price of $6.2 million.

Goodwill_Service_Contracts_and

Goodwill, Service Contracts and Other Assets	3 Months Ended
	Aug. 31, 2013
Goodwill, Service Contracts and Other Assets [Abstract]
Goodwill, Service Contracts and Other Assets	Goodwill, Service Contracts and Other Assets
	Changes in the carrying amount of goodwill and service contracts for the three months ended August 31, 2013, by operating segment, are as follows:
	Goodwill (in thousands)	Rental			Uniform			First Aid,			Document			Total
		Uniforms &			Direct			Safety &			Management
		Ancillary			Sales			Fire
		Products						Protection
	Balance as of June 1, 2013	$	944,325		$	23,942		$	216,989		$	332,304		$	1,517,560
	Goodwill acquired	—			—			4,866			8,203			13,069
	Foreign currency translation	(271		)	(7		)	—			655			377
	Balance as of August 31, 2013	$	944,054		$	23,935		$	221,855		$	341,162		$	1,531,006
	Service Contracts (in thousands)	Rental			Uniform			First Aid,			Document			Total
		Uniforms &			Direct			Safety &			Management
		Ancillary			Sales			Fire
		Products						Protection
	Balance as of June 1, 2013	$	23,135		$	—		$	32,811		$	36,207		$	92,153
	Service contracts acquired	—			—			2,876			3,275			6,151
	Service contracts amortization	(1,497		)	—			(2,013		)	(1,809		)	(5,319		)
	Foreign currency translation	(2		)	—			—			136			134
	Balance as of August 31, 2013	$	21,636		$	—		$	33,674		$	37,809		$	93,119
	Information regarding Cintas’ service contracts and other assets is as follows:
		As of August 31, 2013
	(In thousands)	Carrying Amount			Accumulated Amortization			Net
	Service contracts	$	426,391		$	333,272		$	93,119
	Noncompete and consulting agreements	$	78,833		$	73,608		$	5,225
	Investments (1)	100,648			—			100,648
	Other	22,678			5,119			17,559
	Total	$	202,159		$	78,727		$	123,432
		As of May 31, 2013
	(In thousands)	Carrying Amount			Accumulated Amortization			Net
	Service contracts	$	420,499		$	328,346		$	92,153
	Noncompete and consulting agreements	$	77,863		$	72,970		$	4,893
	Investments (1)	101,525			—			101,525
	Other	22,711			4,739			17,972
	Total	$	202,099		$	77,709		$	124,390
	(1)      Investments at August 31, 2013, include the cash surrender value of insurance policies of $72.0 million, equity method investments of $27.7 million and cost method investments of $0.9 million.  Investments at May 31, 2013, include the cash surrender value of insurance policies of $73.0 million, equity method investments of $27.6 million and cost method investments of $0.9 million.
	Amortization expense was $5.8 million and $6.1 million for the three months ended August 31, 2013 and 2012, respectively.  Estimated amortization expense, excluding any future acquisitions, for each of the next five full fiscal years is $22.4 million, $19.6 million, $14.3 million, $9.1 million and $7.9 million, respectively.
	Investments recorded using the cost method are evaluated for impairment on an annual basis or when indicators of impairment are identified.  For the three months ended August 31, 2013 and 2012, no impairment losses were recognized.

Debt_Derivatives_and_Hedging_A

Debt, Derivatives and Hedging Activities	3 Months Ended
	Aug. 31, 2013
Debt, Derivatives and Hedging Activities [Abstract]
Debt, Derivatives and Hedging Activities	Debt, Derivatives and Hedging Activities
	Cintas' senior notes are recorded at cost. The fair value is estimated using Level 2 inputs based on Cintas' current incremental borrowing rate for similar types of borrowing arrangements which is similar to the market approach. The carrying value and fair value of Cintas' long-term debt as of August 31, 2013 were $1,309.0 million and $1,399.2 million, respectively, and as of May 31, 2013 were $1,309.2 million and $1,447.1 million, respectively.
	Cintas’ commercial paper program has a capacity of $300.0 million that is fully supported by a backup revolving credit facility through a credit agreement with its banking group.  This revolving credit facility has an accordion feature that allows for a maximum borrowing capacity of $450.0 million and has a maturity date of October 6, 2016.  No commercial paper or borrowings on our revolving credit facility were outstanding at August 31, 2013 or May 31, 2013.
	On June 1, 2012, Cintas repaid at maturity $225.0 million aggregate principal amount of its 6.00% senior notes due 2012. On June 5, 2012, Cintas issued $250.0 million aggregate principal amount of senior notes due June 1, 2022. These senior notes bear interest at a rate of 3.25% paid semi-annually beginning December 1, 2012.
	Cintas used interest rate lock agreements to hedge against movements in the treasury rates at the time Cintas issued its senior notes in fiscal 2007, fiscal 2008, fiscal 2011 and fiscal 2013.  The amortization of the cash flow hedges resulted in an increase to other comprehensive income of $0.5 million for the three months ended August 31, 2013 and 2012.
	To hedge the exposure of movements in the foreign currency rates, Cintas may use foreign currency hedges. These hedges reduce the impact on cash flows from movements in the foreign currency exchange rates. Examples of foreign currency hedge instruments that Cintas may use are average rate options and forward contracts. Cintas had forward contracts included in current accrued liabilities of $0.1 million as of August 31, 2013. As of May 31, 2013, there were less than $0.1 million of forward contracts included in accounts receivable. These instruments did not impact foreign currency exchange during the three months ended August 31, 2013 or 2012.
	Cintas has certain covenants related to debt agreements. These covenants limit Cintas’ ability to incur certain liens, to engage in sale-leaseback transactions and to merge, consolidate or sell all or substantially all of Cintas’ assets. These covenants also require Cintas to maintain certain debt to consolidated earnings before interest, taxes, depreciation and amortization (EBITDA) and interest coverage ratios. Cross-default provisions exist between certain debt instruments.  Cintas is in compliance with all of the significant debt covenants for all periods presented. If a default of a significant covenant were to occur, the default could result in an acceleration of the maturity of the indebtedness, impair liquidity and limit the ability to raise future capital.

Income_Taxes

Income Taxes	3 Months Ended
	Aug. 31, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	In the normal course of business, Cintas provides for uncertain tax positions and the related interest, and adjusts its unrecognized tax benefits and accrued interest accordingly.  During the three months ended August 31, 2013, unrecognized tax benefits increased by approximately $0.2 million and accrued interest decreased by approximately $0.1 million.
	All U.S. federal income tax returns are closed to audit through fiscal 2010.  Cintas is currently in advanced stages of various audits in certain foreign jurisdictions and certain domestic states. The years under audit cover fiscal years back to 2005.  Based on the resolution of the various audits and changes in tax law, it is reasonably possible that the balance of unrecognized tax benefits could decrease by $0.6 million for the fiscal year ending May 31, 2014.
	On September 13, 2013, the Internal Revenue Service released final tangible property regulations under Sections 162(a) and 263(a) of the Internal Revenue Code of 1986 (Code), regarding the deduction and capitalization of expenditures related to tangible property. The final regulations replace temporary regulations that were issued in December 2011. Also released were proposed regulations under Section 168 of the Code regarding dispositions of tangible property. These final and proposed regulations will be effective for Cintas' fiscal year ending May 31, 2015. Early adoption is available, and as such, Cintas elected early adoption of the regulations on specific assets (material and supplies) resulting in a gross balance sheet reclassification of $33.6 million in fiscal 2013 between unrecognized tax benefits and the tax deferred (i.e., between long-term accrued liabilities and current deferred taxes on the Consolidated Condensed Balance Sheet). Transition guidance providing the procedural rules to comply with such regulations is expected to be released in the near term. Cintas continues to review the regulations, but does not believe there will be a material impact on Cintas' consolidated financial statements when they are fully adopted.

Litigation_and_Other_Contingen

Litigation and Other Contingencies	3 Months Ended
	Aug. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Litigation and Other Contingencies	Litigation and Other Contingencies
	Cintas is subject to legal proceedings, insurance receipts, legal settlements and claims arising from the ordinary course of its business, including personal injury, customer contract, environmental and employment claims. In the opinion of management, the aggregate liability, if any, with respect to such ordinary course of business actions will not have a material adverse effect on the consolidated financial position, consolidated results of operations or consolidated cash flows of Cintas. Cintas is party to additional litigation not considered in the ordinary course of business, including the litigation discussed below.
	Cintas is a defendant in a purported class action lawsuit, Mirna E. Serrano, et al. v. Cintas Corporation (Serrano), filed on May 10, 2004, and pending in the United States District Court, Eastern District of Michigan, Southern Division. The Serrano plaintiffs alleged that Cintas discriminated against women in hiring into various service sales representative positions across all divisions of Cintas. On November 15, 2005, the Equal Employment Opportunity Commission (EEOC) intervened in the Serrano lawsuit. The Serrano plaintiffs seek injunctive relief, compensatory damages, punitive damages, attorneys' fees and other remedies. On October 27, 2008, the United States District Court in the Eastern District of Michigan granted summary judgment in favor of Cintas limiting the scope of the putative class in the Serrano lawsuit to female applicants for service sales representative positions at Cintas locations within the state of Michigan. Consequently, all claims brought by female applicants for service sales representative positions outside of the state of Michigan were dismissed. Similarly, any claims brought by the EEOC on behalf of similarly situated female applicants outside of the state of Michigan have also been dismissed from the Serrano lawsuit. In September 2010, the Court in Serrano dismissed all private individual claims and all claims of the EEOC and the 13 individuals it claimed to represent. The EEOC appealed the District Court's summary judgment decisions and various other rulings to the United States Court of Appeals for the Sixth Circuit. On November 9, 2012, the Sixth Circuit Court of Appeals reversed the District Court's opinion and remanded the claims back to the District Court. On April 16, 2013, Cintas filed with the United States Supreme Court a Petition for a Writ of Certiorari seeking to review the judgment of the United States Court of Appeals for the Sixth Circuit. On October 7, 2013, the Court denied Cintas’ Petition, thus remanding the claims back to the District Court consistent with the Sixth Circuit Court’s November 9, 2012 decision.
	Cintas is a defendant in another purported class action lawsuit, Blanca Nelly Avalos, et al. v. Cintas Corporation (Avalos), which was filed in the United States District Court, Eastern District of Michigan, Southern Division. The Avalos plaintiffs alleged that Cintas discriminated against women, African-Americans and Hispanics in hiring into various service sales representative positions in Cintas' Rental division only throughout the United States. The Avalos plaintiffs sought injunctive relief, compensatory damages, punitive damages, attorneys' fees and other remedies. The claims in Avalos originally were brought in the lawsuit captioned Robert Ramirez, et al. v. Cintas Corporation (Ramirez), filed on January 20, 2004, in the United States District Court, Northern District of California, San Francisco Division. On May 11, 2006, the Ramirez and Avalos African-American, Hispanic and female failure to hire into service sales representative positions claims and the EEOC's intervention were consolidated for pretrial purposes with the Serrano case and transferred to the United States District Court for the Eastern District of Michigan, Southern Division. The consolidated case was known as Mirna E. Serrano/Blanca Nelly Avalos, et al. v. Cintas Corporation (Serrano/Avalos). On March 31, 2009, the United States District Court, Eastern District of Michigan, Southern Division entered an order denying class certification to all plaintiffs in the Serrano/Avalos lawsuits. Following denial of class certification, the Court permitted the individual Avalos and Serrano plaintiffs to proceed separately. In the Avalos case, the Court dismissed the remaining claims of the individual plaintiffs who remained in that case after the denial of class certification. On May 11, 2010, Plaintiff Tanesha Davis, on behalf of all similarly situated plaintiffs in the Avalos case, filed a notice of appeal of the District Court's summary judgment order in the United States Court of Appeals for the Sixth Circuit. On May 30, 2013, the United States Court of Appeals for the Sixth Circuit affirmed the denial of class certification.
	The litigation discussed above, if decided or settled adversely to Cintas, may, individually or in the aggregate, result in liability material to Cintas' consolidated financial condition, consolidated results of operations or consolidated cash flows and could increase costs of operations on an ongoing basis. Any estimated liability relating to these proceedings is not determinable at this time. Cintas may enter into discussions regarding settlement of these and other lawsuits, and may enter into settlement agreements if it believes such settlement is in the best interest of Cintas' shareholders.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Aug. 31, 2013
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss)
	The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive income (loss):
	(In thousands)	For the Three Months Ended August 31, 2013
		Foreign Currency			Unrealized			Other			Total
					Loss on
					Derivatives
	Balance at June 1, 2013	$	51,312		$	(14,339	)	$	1,150		$	38,123
	Other comprehensive loss before reclassifications	(646		)	—			(14		)	(660		)
	Amounts reclassified from accumulated other comprehensive loss	—			488			—			488
	Net current period other comprehensive (loss) income	(646		)	488			(14		)	(172		)
	Balance at August 31, 2013	$	50,666		$	(13,851	)	$	1,136		$	37,951
	The following table summarizes the reclassifications out of accumulated other comprehensive income (loss):
	(In thousands)		For the Three Months Ended August 31, 2013
	Details about Accumulated Other Comprehensive Income Components		Amount Reclassified from			Affected Line in the Consolidated Condensed Statements of Income
			Accumulated Other
			Comprehensive Loss
	Amortization of interest rate locks		$	488		Interest Expense

Segment_Information

Segment Information	3 Months Ended
	Aug. 31, 2013
Segment Reporting [Abstract]
Segment Information	Segment Information
	Cintas classifies its businesses into four operating segments based on the types of products and services provided.  The Rental Uniforms and Ancillary Products operating segment consists of the rental and servicing of uniforms and other garments including flame resistant clothing, mats, mops and shop towels and other ancillary items.  In addition to these rental items, restroom cleaning services and supplies and carpet and tile cleaning services are also provided within this operating segment.  The Uniform Direct Sales operating segment consists of the direct sale of uniforms and related items.  The First Aid, Safety and Fire Protection Services operating segment consists of first aid, safety and fire protection products and services.  The Document Management Services operating segment consists of document destruction, document imaging and document retention services.
	Cintas evaluates the performance of each operating segment based on several factors of which the primary financial measures are operating segment revenue and income before income taxes.  The accounting policies of the operating segments are the same as those described in Note 1 entitled Basis of Presentation.  Information related to the operations of Cintas’ operating segments is set forth below:
	(In thousands)	Rental		Uniform		First Aid,		Document Management		Corporate			Total
		Uniforms &		Direct Sales		Safety &
		Ancillary Products				Fire Protection
	As of and for the three months ended August 31, 2013
	Revenue	$	792,866	$	107,462	$	125,875	$	94,140	$	—		$	1,120,343
	Income (loss) before income taxes	$	117,393	$	8,681	$	11,446	$	2,550	$	(16,455	)	$	123,615
	Total assets	$	2,842,058	$	143,993	$	410,633	$	631,634	$	282,859		$	4,311,177
	As of and for the three months ended August 31, 2012
	Revenue	$	754,843	$	100,279	$	110,841	$	85,362	$	—		$	1,051,325
	Income (loss) before income taxes	$	116,907	$	8,741	$	9,021	$	4,625	$	(16,521	)	$	122,773
	Total assets	$	2,779,217	$	125,094	$	359,387	$	563,172	$	330,165		$	4,157,035

Supplemental_Guarantor_Informa

Supplemental Guarantor Information	3 Months Ended
	Aug. 31, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Supplemental Guarantor Information	Supplemental Guarantor Information
	Cintas Corporation No. 2 (Corp. 2) is the indirectly, wholly-owned principal operating subsidiary of Cintas.  Corp. 2 is the issuer of the $1,300.0 million aggregate principal amount of long-term senior notes, which are unconditionally guaranteed, jointly and severally, by Cintas Corporation and its wholly-owned, direct and indirect domestic subsidiaries.
	As allowed by SEC rules, the following condensed consolidating financial statements are provided as an alternative to filing separate financial statements of the guarantors.  Each of the subsidiaries presented in the following condensed consolidating financial statements has been fully consolidated in Cintas’ consolidated financial statements.  The following condensed consolidating financial statements should be read in conjunction with the consolidated financial statements of Cintas and notes thereto of which this note is an integral part.
	Condensed consolidating financial statements for Cintas, Corp. 2, the subsidiary guarantors and non-guarantors are presented on the following pages:
	Condensed Consolidating Income Statement
	Three Months Ended August 31, 2013
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Revenue:
	Rental uniforms and ancillary products	$	—		$	605,758		$	162,565		$	54,965		$	(30,422	)	$	792,866
	Other services	—			404,574			8,548			31,386			(117,031		)	327,477
	Equity in net income of affiliates	77,754			—			—			—			(77,754		)	—
		77,754			1,010,332			171,113			86,351			(225,207		)	1,120,343
	Costs and expenses (income):
	Cost of rental uniforms and ancillary products	—			383,719			98,167			38,556			(65,711		)	454,731
	Cost of other services	—			260,595			(3,111		)	19,064			(76,916		)	199,632
	Selling and administrative expenses	—			308,761			(4,859		)	26,213			(4,205		)	325,910
	Operating income	77,754			57,257			80,916			2,518			(78,375		)	140,070
	Interest income	—			(8		)	(53		)	(14,694		)	14,687			(68		)
	Interest expense (income)	—			16,480			44			(1		)	—			16,523
	Income before income taxes	77,754			40,785			80,925			17,213			(93,062		)	123,615
	Income taxes	—			15,104			29,968			819			(30		)	45,861
	Net income	$	77,754		$	25,681		$	50,957		$	16,394		$	(93,032	)	$	77,754
	Condensed Consolidating Income Statement
	Three Months Ended August 31, 2012
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Revenue:
	Rental uniforms and ancillary products	$	—		$	576,285		$	152,817		$	53,784		$	(28,043	)	$	754,843
	Other services	—			369,406			10,879			29,378			(113,181		)	296,482
	Equity in net income of affiliates	76,733			—			—			—			(76,733		)	—
		76,733			945,691			163,696			83,162			(217,957		)	1,051,325
	Costs and expenses (income):
	Cost of rental uniforms and ancillary products	—			364,197			89,342			36,620			(62,011		)	428,148
	Cost of other services	—			236,331			(2,417		)	17,708			(74,320		)	177,302
	Selling and administrative expenses	—			290,644			(4,139		)	24,301			(4,225		)	306,581
	Operating income	76,733			54,519			80,910			4,533			(77,401		)	139,294
	Interest income	—			(18		)	(35		)	(24		)	—			(77		)
	Interest expense	—			16,566			31			1			—			16,598
	Income before income taxes	76,733			37,971			80,914			4,556			(77,401		)	122,773
	Income taxes	—			14,379			30,642			1,024			(5		)	46,040
	Net income	$	76,733		$	23,592		$	50,272		$	3,532		$	(77,396	)	$	76,733
	Condensed Consolidating Statement of Comprehensive Income
	Three Months Ended August 31, 2013
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Net income	$	77,754		$	25,681		$	50,957		$	16,394		$	(93,032	)	$	77,754
	Other comprehensive income (loss), net of tax:
	Foreign currency translation	—			7			—			(653		)	—			(646		)
	adjustments
	Amortization of interest rate lock	—			488			—			—			—			488
	agreements
	Change in fair value of available-for-	—			—			(13		)	(1		)	—			(14		)
	sale securities
	Other comprehensive income (loss)	—			495			(13		)	(654		)	—			(172		)
	Comprehensive income	$	77,754		$	26,176		$	50,944		$	15,740		$	(93,032	)	$	77,582
	Condensed Consolidating Statement of Comprehensive Income
	Three Months Ended August 31, 2012
(In thousands)
	Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
	Corporation						Guarantors			Guarantors						Corporation
																Consolidated
Net income	$	76,733		$	23,592		$	50,272		$	3,532		$	(77,396	)	$	76,733
Other comprehensive income (loss), net of tax:
Foreign currency translation	—			8			—			7,009			—			7,017
adjustments
Change in fair value of derivatives	—			(151		)	—			—			—			(151		)
Amortization of interest rate lock	—			488			—			—			—			488
agreements
Change in fair value of available-for-	—			—			—			(2		)	—			(2		)
sale securities
Other comprehensive income	—			345			—			7,007			—			7,352
Comprehensive income	$	76,733		$	23,937		$	50,272		$	10,539		$	(77,396	)	$	84,085
Condensed Consolidating Balance Sheet
As of August 31, 2013
(In thousands)
	Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
	Corporation						Guarantors			Guarantors						Corporation
																Consolidated
Assets
Current assets:
Cash and cash equivalents	$	—		$	64,369		$	190,896		$	23,405		$	—		$	278,670
Marketable securities	—			—			—			4,189			—			4,189
Accounts receivable, net	—			365,024			102,018			44,600			—			511,642
Inventories, net	—			209,299			22,909			9,720			3,542			245,470
Uniforms and other rental items in service	—			367,936			113,866			38,312			(19,730		)	500,384
Income taxes, current	—			—			(2,166		)	2,166			—			—
Deferred tax asset (liability)	—			526			(526		)	—			—			—
Prepaid expenses	—			7,559			20,324			4,051			—			31,934
Total current assets	—			1,014,713			447,321			126,443			(16,188		)	1,572,289
Property and equipment, at cost, net	—			631,172			254,952			105,207			—			991,331
Goodwill	—			—			1,454,846			76,160			—			1,531,006
Service contracts, net	—			87,264			134			5,721			—			93,119
Other assets, net	1,692,813			1,626,975			2,804,237			794,622			(6,795,215		)	123,432
	$	1,692,813		$	3,360,124		$	4,961,490		$	1,108,153		$	(6,811,403	)	$	4,311,177
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	(465,247	)	$	(567,870	)	$	1,095,369		$	24,684		$	38,016		$	124,952
Accrued compensation and related liabilities	—			30,394			8,877			3,976			—			43,247
Accrued liabilities	—			51,115			174,157			9,965			—			235,237
Income taxes, current	—			1,719			21,648			—			—			23,367
Deferred tax liability	—			—			71,872			8,820			—			80,692
Long-term debt due within one year	—			8,470			(270		)	—			—			8,200
Total current liabilities	(465,247		)	(476,172		)	1,371,653			47,445			38,016			515,695
Long-term liabilities:
Long-term debt due after one year	—			1,309,934			(9,983		)	848			—			1,300,799
Deferred income taxes	—			(6		)	220,463			(6,236		)	—			214,221
Accrued liabilities	—			—			83,613			838			—			84,451
Total long-term liabilities	—			1,309,928			294,093			(4,550		)	—			1,599,471
Total shareholders’ equity	2,158,060			2,526,368			3,295,744			1,065,258			(6,849,419		)	2,196,011
	$	1,692,813		$	3,360,124		$	4,961,490		$	1,108,153		$	(6,811,403	)	$	4,311,177
Condensed Consolidating Balance Sheet
As of May 31, 2013
(In thousands)
	Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
	Corporation						Guarantors			Guarantors						Corporation
																Consolidated
Assets
Current assets:
Cash and cash equivalents	$	—		$	54,511		$	247,070		$	50,692		$	—		$	352,273
Marketable securities	—			—			5,680			—			—			5,680
Accounts receivable, net	—			355,429			96,569			44,051			—			496,049
Inventories, net	—			201,260			25,584			10,342			3,254			240,440
Uniforms and other rental items in service	—			363,662			113,024			38,917			(18,851		)	496,752
Income taxes, current	—			4,172			3,437			1,493			—			9,102
Deferred tax asset (liability)	—			534			(534		)	—			—			—
Prepaid expenses	—			7,450			12,909			4,171			—			24,530
Total current assets	—			987,018			503,739			149,666			(15,597		)	1,624,826
Property and equipment, at cost, net	—			631,480			259,586			95,637			—			986,703
Goodwill	—			—			1,449,445			68,115			—			1,517,560
Service contracts, net	—			88,157			166			3,830			—			92,153
Other assets, net	1,698,122			1,627,505			2,698,197			768,903			(6,668,337		)	124,390
	$	1,698,122		$	3,334,160		$	4,911,133		$	1,086,151		$	(6,683,934	)	$	4,345,632
Liabilities and Shareholders’ Equity
Current liabilities:
Accounts payable	$	(465,247	)	$	(561,454	)	$	1,084,986		$	24,728		$	38,016		$	121,029
Accrued compensation and related liabilities	—			54,591			17,642			5,817			—			78,050
Accrued liabilities	—			67,490			193,261			11,837			(767		)	271,821
Deferred tax liability	—			—			68,231			8,938			—			77,169
Long-term debt due within one year	—			8,436			(249		)	—			—			8,187
Total current liabilities	(465,247		)	(430,937		)	1,363,871			51,320			37,249			556,256
Long-term liabilities:
Long-term debt due after one year	—			1,310,384			(11,020		)	848			767			1,300,979
Deferred income taxes	—			(6		)	216,368			(5,879		)	—			210,483
Accrued liabilities	—			—			75,571			851			—			76,422
Total long-term liabilities	—			1,310,378			280,919			(4,180		)	767			1,587,884
Total shareholders’ equity	2,163,369			2,454,719			3,266,343			1,039,011			(6,721,950		)	2,201,492
	$	1,698,122		$	3,334,160		$	4,911,133		$	1,086,151		$	(6,683,934	)	$	4,345,632
Condensed Consolidating Statement of Cash Flows
Three Months Ended August 31, 2013
(In thousands)
	Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
	Corporation						Guarantors			Guarantors						Corporation
																Consolidated
Cash flows from operating activities:
Net income	$	77,754		$	25,681		$	50,957		$	16,394		$	(93,032	)	$	77,754
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	—			25,690			13,305			3,576			—			42,571
Amortization of intangible assets	—			5,318			41			464			—			5,823
Stock-based compensation	6,984			—			—			—			—			6,984
Deferred income taxes	—			—			7,735			(362		)	—			7,373
Changes in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	—			(9,495		)	(5,449		)	41			—			(14,903		)
Inventories, net	—			(8,071		)	2,675			426			(288		)	(5,258		)
Uniforms and other rental items in service	—			(4,274		)	(842		)	87			879			(4,150		)
Prepaid expenses	—			(81		)	(7,416		)	281			—			(7,216		)
Accounts payable	—			(1,001		)	4,147			(231		)	—			2,915
Accrued compensation and related liabilities	—			(24,197		)	(8,765		)	(1,815		)	—			(34,777		)
Accrued liabilities	—			(13,567		)	(11,060		)	(3,355		)	767			(27,215		)
Income taxes payable	—			5,897			27,252			(491		)	—			32,658
Net cash provided by operating activities	84,738			1,900			72,580			15,015			(91,674		)	82,559
Cash flows from investing activities:
Capital expenditures	—			(25,556		)	(8,804		)	(3,102		)	—			(37,462		)
Proceeds from redemption of marketable securities	—			—			5,659			29,574			—			35,233
Purchase of marketable securities and investments	—			(67		)	(23,946		)	(33,818		)	24,890			(32,941		)
Acquisitions of businesses, net of cash acquired	—			(12,306		)	(1		)	(19,909		)	—			(32,216		)
Other	5,309			45,815			(103,631		)	(14,662		)	67,551			382
Net cash provided by (used in) investing activities	5,309			7,886			(130,723		)	(41,917		)	92,441			(67,004		)
Cash flows from financing activities:
Proceeds from issuance of debt	—			—			953			(953		)	—			—
Repayment of debt	—			(416		)	1,016			—			(767		)	(167		)
Exercise of stock-based compensation awards	14,085			—			—			—			—			14,085
Repurchase of common stock	(106,977		)	—			—			—			—			(106,977		)
Other	2,845			488			—			793			—			4,126
Net cash (used in) provided by financing activities	(90,047		)	72			1,969			(160		)	(767		)	(88,933		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			(225		)	—			(225		)
Net increase (decrease) in cash and cash equivalents	—			9,858			(56,174		)	(27,287		)	—			(73,603		)
Cash and cash equivalents at beginning of period	—			54,511			247,070			50,692			—			352,273
Cash and cash equivalents at end of period	$	—		$	64,369		$	190,896		$	23,405		$	—		$	278,670
Condensed Consolidating Statement of Cash Flows
Three Months Ended August 31, 2012
(In thousands)
	Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
	Corporation						Guarantors			Guarantors						Corporation
																Consolidated
Cash flows from operating activities:
Net income	$	76,733		$	23,592		$	50,272		$	3,532		$	(77,396	)	$	76,733
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	—			23,845			13,280			3,217			—			40,342
Amortization of intangible assets	—			5,127			75			898			—			6,100
Stock-based compensation	5,448			—			—			—			—			5,448
Deferred income taxes	—			—			9,764			(48		)	—			9,716
Changes in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	—			(9,426		)	(880		)	3,178			—			(7,128		)
Inventories, net	—			7,594			261			271			1,763			9,889
Uniforms and other rental items in service	—			(4,140		)	(3,864		)	545			(1,213		)	(8,672		)
Prepaid expenses	—			201			(5,478		)	(115		)	—			(5,392		)
Accounts payable	—			(34,149		)	53,816			(3,389		)	—			16,278
Accrued compensation and related liabilities	—			(35,526		)	(12,735		)	(2,532		)	—			(50,793		)
Accrued liabilities	—			(20,442		)	(4,977		)	(2,767		)	786			(27,400		)
Income taxes payable	—			5,845			24,635			(736		)	—			29,744
Net cash provided by (used in) operating activities	82,181			(37,479		)	124,169			2,054			(76,060		)	94,865
Cash flows from investing activities:
Capital expenditures	—			(26,987		)	(15,169		)	(5,282		)	—			(47,438		)
Proceeds from redemption of marketable securities	—			—			—			24,720			—			24,720
Purchase of marketable securities and investments	—			529			(1,244		)	(35,445		)	(810		)	(36,970		)
Acquisitions of businesses, net of cash acquired	—			(1,343		)	—			(787		)	—			(2,130		)
Other	(7,928		)	57,262			(126,388		)	(25		)	77,656			577
Net cash (used in) provided by investing activities	(7,928		)	29,461			(142,801		)	(16,819		)	76,846			(61,241		)
Cash flows from financing activities:
Proceeds from issuance of debt	—			250,000			(477		)	477			—			250,000
Repayment of debt	—			(225,384		)	1,016			—			(786		)	(225,154		)
Exercise of stock-based compensation awards	1,119			—			—			—			—			1,119
Repurchase of common stock	(77,953		)	—			—			—			—			(77,953		)
Other	2,581			(5,453		)	—			(619		)	—			(3,491		)
Net cash (used in) provided by financing activities	(74,253		)	19,163			539			(142		)	(786		)	(55,479		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			1,247			—			1,247
Net increase (decrease) in cash and cash equivalents	—			11,145			(18,093		)	(13,660		)	—			(20,608		)
Cash and cash equivalents at beginning of period	—			58,737			229,287			51,801			—			339,825
Cash and cash equivalents at end of period	$	—		$	69,882		$	211,194		$	38,141		$	—		$	319,217

New_Accounting_Pronouncements_

New Accounting Pronouncements (Policies)	3 Months Ended
	Aug. 31, 2013
Accounting Policies [Abstract]
New Accounting Pronouncements	In February 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2013-02, "Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income." ASU 2013-02 requires an entity to present (either on the face of the statement where net income is presented or in the notes) the effects on the line items of net income of significant amounts reclassified out of accumulated other comprehensive income if the item reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For reclassification items not required under GAAP to be reclassified directly to net income in their entirety in the same reporting period, an entity is required to cross-reference to other disclosures currently required under GAAP that provide additional detail about those amounts. ASU 2013-02 applies to all public and private companies that report items of other comprehensive income. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012, with prospective adoption required. The Company adopted ASU 2013-02 effective June 1, 2013. See Note 9 entitled Accumulated Other Comprehensive Income (Loss) of "Notes to Consolidated Condensed Financial Statements" for details of required disclosure.

Basis_of_Presentation_Tables

Basis of Presentation (Tables)	3 Months Ended
	Aug. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of inventory	Inventory is comprised of the following amounts:
	(In thousands)	August 31,		May 31,
		2013		2013
	Raw materials	$	17,389	$	19,800
	Work in process	15,712		17,353
	Finished goods	212,369		203,287
		$	245,470	$	240,440

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Aug. 31, 2013
Fair Value Disclosures [Abstract]
Schedule of fair value of financial instruments measured on a recurring basis	These financial instruments measured at fair value on a recurring basis are summarized below:
	(In thousands)	As of August 31, 2013
		Level 1		Level 2		Level 3		Fair Value
	Cash and cash equivalents	$	278,670	$	—	$	—	$	278,670
	Marketable securities:
	Canadian treasury securities	—		4,189		—		4,189
	Total assets at fair value	$	278,670	$	4,189	$	—	$	282,859
	Current accrued liabilities	$	—	$	107	$	—	$	107
	Total liabilities at fair value	$	—	$	107	$	—	$	107
	(In thousands)	As of May 31, 2013
		Level 1		Level 2		Level 3		Fair Value
	Cash and cash equivalents	$	352,273	$	—	$	—	$	352,273
	Marketable securities:
	U.S. municipal bonds	—		5,680		—		5,680
	Accounts receivable, net	—		39		—		39
	Total assets at fair value	$	352,273	$	5,719	$	—	$	357,992

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Aug. 31, 2013
Earnings Per Share [Abstract]
Computation of basic and diluted earnings per share	The following table sets forth the computation of basic and diluted earnings per share using the two-class method for amounts attributable to Cintas’ common shares:
		Three Months Ended
	(In thousands except per share data)	August 31,		August 31,
		2013		2012
	Basic Earnings per Share
	Net income	$	77,754	$	76,733
	Less: net income allocated to participating unvested securities	460		365
	Net income available to common shareholders	$	77,294	$	76,368
	Basic weighted average common shares outstanding	122,130		126,110
	Basic earnings per common share	$	0.63	$	0.61
	Diluted Earnings per Share
	Net income	$	77,754	$	76,733
	Less: net income allocated to participating unvested securities	460		365
	Net income available to common shareholders	$	77,294	$	76,368
	Basic weighted average common shares outstanding	122,130		126,110
	Effect of dilutive securities – employee stock options	762		348
	Diluted weighted average common shares outstanding	122,892		126,458
	Diluted earnings per share	$	0.63	$	0.6

Goodwill_Service_Contracts_and1

Goodwill, Service Contracts and Other Assets (Tables)	3 Months Ended
	Aug. 31, 2013
Goodwill, Service Contracts and Other Assets [Abstract]
Changes in the carrying amount of goodwill by operating segment	Changes in the carrying amount of goodwill and service contracts for the three months ended August 31, 2013, by operating segment, are as follows:
	Goodwill (in thousands)	Rental			Uniform			First Aid,			Document			Total
		Uniforms &			Direct			Safety &			Management
		Ancillary			Sales			Fire
		Products						Protection
	Balance as of June 1, 2013	$	944,325		$	23,942		$	216,989		$	332,304		$	1,517,560
	Goodwill acquired	—			—			4,866			8,203			13,069
	Foreign currency translation	(271		)	(7		)	—			655			377
	Balance as of August 31, 2013	$	944,054		$	23,935		$	221,855		$	341,162		$	1,531,006
Changes in the carrying amount of service contracts by operating segment
	Service Contracts (in thousands)	Rental			Uniform			First Aid,			Document			Total
		Uniforms &			Direct			Safety &			Management
		Ancillary			Sales			Fire
		Products						Protection
	Balance as of June 1, 2013	$	23,135		$	—		$	32,811		$	36,207		$	92,153
	Service contracts acquired	—			—			2,876			3,275			6,151
	Service contracts amortization	(1,497		)	—			(2,013		)	(1,809		)	(5,319		)
	Foreign currency translation	(2		)	—			—			136			134
	Balance as of August 31, 2013	$	21,636		$	—		$	33,674		$	37,809		$	93,119
Information regarding service contracts and other assets	Information regarding Cintas’ service contracts and other assets is as follows:
		As of August 31, 2013
	(In thousands)	Carrying Amount			Accumulated Amortization			Net
	Service contracts	$	426,391		$	333,272		$	93,119
	Noncompete and consulting agreements	$	78,833		$	73,608		$	5,225
	Investments (1)	100,648			—			100,648
	Other	22,678			5,119			17,559
	Total	$	202,159		$	78,727		$	123,432
		As of May 31, 2013
	(In thousands)	Carrying Amount			Accumulated Amortization			Net
	Service contracts	$	420,499		$	328,346		$	92,153
	Noncompete and consulting agreements	$	77,863		$	72,970		$	4,893
	Investments (1)	101,525			—			101,525
	Other	22,711			4,739			17,972
	Total	$	202,099		$	77,709		$	124,390
	(1)      Investments at August 31, 2013, include the cash surrender value of insurance policies of $72.0 million, equity method investments of $27.7 million and cost method investments of $0.9 million.  Investments at May 31, 2013, include the cash surrender value of insurance policies of $73.0 million, equity method investments of $27.6 million and cost method investments of $0.9 million.

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Aug. 31, 2013
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income (Loss)	The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive income (loss):
	(In thousands)	For the Three Months Ended August 31, 2013
		Foreign Currency			Unrealized			Other			Total
					Loss on
					Derivatives
	Balance at June 1, 2013	$	51,312		$	(14,339	)	$	1,150		$	38,123
	Other comprehensive loss before reclassifications	(646		)	—			(14		)	(660		)
	Amounts reclassified from accumulated other comprehensive loss	—			488			—			488
	Net current period other comprehensive (loss) income	(646		)	488			(14		)	(172		)
	Balance at August 31, 2013	$	50,666		$	(13,851	)	$	1,136		$	37,951
Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss)	The following table summarizes the reclassifications out of accumulated other comprehensive income (loss):
	(In thousands)		For the Three Months Ended August 31, 2013
	Details about Accumulated Other Comprehensive Income Components		Amount Reclassified from			Affected Line in the Consolidated Condensed Statements of Income
			Accumulated Other
			Comprehensive Loss
	Amortization of interest rate locks		$	488		Interest Expense

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Aug. 31, 2013
Segment Reporting [Abstract]
Information related to operating segments	Information related to the operations of Cintas’ operating segments is set forth below:
	(In thousands)	Rental		Uniform		First Aid,		Document Management		Corporate			Total
		Uniforms &		Direct Sales		Safety &
		Ancillary Products				Fire Protection
	As of and for the three months ended August 31, 2013
	Revenue	$	792,866	$	107,462	$	125,875	$	94,140	$	—		$	1,120,343
	Income (loss) before income taxes	$	117,393	$	8,681	$	11,446	$	2,550	$	(16,455	)	$	123,615
	Total assets	$	2,842,058	$	143,993	$	410,633	$	631,634	$	282,859		$	4,311,177
	As of and for the three months ended August 31, 2012
	Revenue	$	754,843	$	100,279	$	110,841	$	85,362	$	—		$	1,051,325
	Income (loss) before income taxes	$	116,907	$	8,741	$	9,021	$	4,625	$	(16,521	)	$	122,773
	Total assets	$	2,779,217	$	125,094	$	359,387	$	563,172	$	330,165		$	4,157,035

Supplemental_Guarantor_Informa1

Supplemental Guarantor Information (Tables)	3 Months Ended
	Aug. 31, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Income Statement	Condensed Consolidating Income Statement
	Three Months Ended August 31, 2013
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Revenue:
	Rental uniforms and ancillary products	$	—		$	605,758		$	162,565		$	54,965		$	(30,422	)	$	792,866
	Other services	—			404,574			8,548			31,386			(117,031		)	327,477
	Equity in net income of affiliates	77,754			—			—			—			(77,754		)	—
		77,754			1,010,332			171,113			86,351			(225,207		)	1,120,343
	Costs and expenses (income):
	Cost of rental uniforms and ancillary products	—			383,719			98,167			38,556			(65,711		)	454,731
	Cost of other services	—			260,595			(3,111		)	19,064			(76,916		)	199,632
	Selling and administrative expenses	—			308,761			(4,859		)	26,213			(4,205		)	325,910
	Operating income	77,754			57,257			80,916			2,518			(78,375		)	140,070
	Interest income	—			(8		)	(53		)	(14,694		)	14,687			(68		)
	Interest expense (income)	—			16,480			44			(1		)	—			16,523
	Income before income taxes	77,754			40,785			80,925			17,213			(93,062		)	123,615
	Income taxes	—			15,104			29,968			819			(30		)	45,861
	Net income	$	77,754		$	25,681		$	50,957		$	16,394		$	(93,032	)	$	77,754
	Condensed Consolidating Income Statement
	Three Months Ended August 31, 2012
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Revenue:
	Rental uniforms and ancillary products	$	—		$	576,285		$	152,817		$	53,784		$	(28,043	)	$	754,843
	Other services	—			369,406			10,879			29,378			(113,181		)	296,482
	Equity in net income of affiliates	76,733			—			—			—			(76,733		)	—
		76,733			945,691			163,696			83,162			(217,957		)	1,051,325
	Costs and expenses (income):
	Cost of rental uniforms and ancillary products	—			364,197			89,342			36,620			(62,011		)	428,148
	Cost of other services	—			236,331			(2,417		)	17,708			(74,320		)	177,302
	Selling and administrative expenses	—			290,644			(4,139		)	24,301			(4,225		)	306,581
	Operating income	76,733			54,519			80,910			4,533			(77,401		)	139,294
	Interest income	—			(18		)	(35		)	(24		)	—			(77		)
	Interest expense	—			16,566			31			1			—			16,598
	Income before income taxes	76,733			37,971			80,914			4,556			(77,401		)	122,773
	Income taxes	—			14,379			30,642			1,024			(5		)	46,040
	Net income	$	76,733		$	23,592		$	50,272		$	3,532		$	(77,396	)	$	76,733
Condensed Consolidating Statement of Comprehensive Income	Condensed Consolidating Statement of Comprehensive Income
	Three Months Ended August 31, 2013
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Net income	$	77,754		$	25,681		$	50,957		$	16,394		$	(93,032	)	$	77,754
	Other comprehensive income (loss), net of tax:
	Foreign currency translation	—			7			—			(653		)	—			(646		)
	adjustments
	Amortization of interest rate lock	—			488			—			—			—			488
	agreements
	Change in fair value of available-for-	—			—			(13		)	(1		)	—			(14		)
	sale securities
	Other comprehensive income (loss)	—			495			(13		)	(654		)	—			(172		)
	Comprehensive income	$	77,754		$	26,176		$	50,944		$	15,740		$	(93,032	)	$	77,582
	Condensed Consolidating Statement of Comprehensive Income
	Three Months Ended August 31, 2012
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Net income	$	76,733		$	23,592		$	50,272		$	3,532		$	(77,396	)	$	76,733
	Other comprehensive income (loss), net of tax:
	Foreign currency translation	—			8			—			7,009			—			7,017
	adjustments
	Change in fair value of derivatives	—			(151		)	—			—			—			(151		)
	Amortization of interest rate lock	—			488			—			—			—			488
	agreements
	Change in fair value of available-for-	—			—			—			(2		)	—			(2		)
	sale securities
	Other comprehensive income	—			345			—			7,007			—			7,352
	Comprehensive income	$	76,733		$	23,937		$	50,272		$	10,539		$	(77,396	)	$	84,085
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet
	As of August 31, 2013
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Assets
	Current assets:
	Cash and cash equivalents	$	—		$	64,369		$	190,896		$	23,405		$	—		$	278,670
	Marketable securities	—			—			—			4,189			—			4,189
	Accounts receivable, net	—			365,024			102,018			44,600			—			511,642
	Inventories, net	—			209,299			22,909			9,720			3,542			245,470
	Uniforms and other rental items in service	—			367,936			113,866			38,312			(19,730		)	500,384
	Income taxes, current	—			—			(2,166		)	2,166			—			—
	Deferred tax asset (liability)	—			526			(526		)	—			—			—
	Prepaid expenses	—			7,559			20,324			4,051			—			31,934
	Total current assets	—			1,014,713			447,321			126,443			(16,188		)	1,572,289
	Property and equipment, at cost, net	—			631,172			254,952			105,207			—			991,331
	Goodwill	—			—			1,454,846			76,160			—			1,531,006
	Service contracts, net	—			87,264			134			5,721			—			93,119
	Other assets, net	1,692,813			1,626,975			2,804,237			794,622			(6,795,215		)	123,432
		$	1,692,813		$	3,360,124		$	4,961,490		$	1,108,153		$	(6,811,403	)	$	4,311,177
	Liabilities and Shareholders’ Equity
	Current liabilities:
	Accounts payable	$	(465,247	)	$	(567,870	)	$	1,095,369		$	24,684		$	38,016		$	124,952
	Accrued compensation and related liabilities	—			30,394			8,877			3,976			—			43,247
	Accrued liabilities	—			51,115			174,157			9,965			—			235,237
	Income taxes, current	—			1,719			21,648			—			—			23,367
	Deferred tax liability	—			—			71,872			8,820			—			80,692
	Long-term debt due within one year	—			8,470			(270		)	—			—			8,200
	Total current liabilities	(465,247		)	(476,172		)	1,371,653			47,445			38,016			515,695
	Long-term liabilities:
	Long-term debt due after one year	—			1,309,934			(9,983		)	848			—			1,300,799
	Deferred income taxes	—			(6		)	220,463			(6,236		)	—			214,221
	Accrued liabilities	—			—			83,613			838			—			84,451
	Total long-term liabilities	—			1,309,928			294,093			(4,550		)	—			1,599,471
	Total shareholders’ equity	2,158,060			2,526,368			3,295,744			1,065,258			(6,849,419		)	2,196,011
		$	1,692,813		$	3,360,124		$	4,961,490		$	1,108,153		$	(6,811,403	)	$	4,311,177
	Condensed Consolidating Balance Sheet
	As of May 31, 2013
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Assets
	Current assets:
	Cash and cash equivalents	$	—		$	54,511		$	247,070		$	50,692		$	—		$	352,273
	Marketable securities	—			—			5,680			—			—			5,680
	Accounts receivable, net	—			355,429			96,569			44,051			—			496,049
	Inventories, net	—			201,260			25,584			10,342			3,254			240,440
	Uniforms and other rental items in service	—			363,662			113,024			38,917			(18,851		)	496,752
	Income taxes, current	—			4,172			3,437			1,493			—			9,102
	Deferred tax asset (liability)	—			534			(534		)	—			—			—
	Prepaid expenses	—			7,450			12,909			4,171			—			24,530
	Total current assets	—			987,018			503,739			149,666			(15,597		)	1,624,826
	Property and equipment, at cost, net	—			631,480			259,586			95,637			—			986,703
	Goodwill	—			—			1,449,445			68,115			—			1,517,560
	Service contracts, net	—			88,157			166			3,830			—			92,153
	Other assets, net	1,698,122			1,627,505			2,698,197			768,903			(6,668,337		)	124,390
		$	1,698,122		$	3,334,160		$	4,911,133		$	1,086,151		$	(6,683,934	)	$	4,345,632
	Liabilities and Shareholders’ Equity
	Current liabilities:
	Accounts payable	$	(465,247	)	$	(561,454	)	$	1,084,986		$	24,728		$	38,016		$	121,029
	Accrued compensation and related liabilities	—			54,591			17,642			5,817			—			78,050
Accrued liabilities	—			67,490			193,261			11,837			(767		)	271,821
Deferred tax liability	—			—			68,231			8,938			—			77,169
Long-term debt due within one year	—			8,436			(249		)	—			—			8,187
Total current liabilities	(465,247		)	(430,937		)	1,363,871			51,320			37,249			556,256
Long-term liabilities:
Long-term debt due after one year	—			1,310,384			(11,020		)	848			767			1,300,979
Deferred income taxes	—			(6		)	216,368			(5,879		)	—			210,483
Accrued liabilities	—			—			75,571			851			—			76,422
Total long-term liabilities	—			1,310,378			280,919			(4,180		)	767			1,587,884
Total shareholders’ equity	2,163,369			2,454,719			3,266,343			1,039,011			(6,721,950		)	2,201,492
	$	1,698,122		$	3,334,160		$	4,911,133		$	1,086,151		$	(6,683,934	)	$	4,345,632
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows
	Three Months Ended August 31, 2013
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Cash flows from operating activities:
	Net income	$	77,754		$	25,681		$	50,957		$	16,394		$	(93,032	)	$	77,754
	Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation	—			25,690			13,305			3,576			—			42,571
	Amortization of intangible assets	—			5,318			41			464			—			5,823
	Stock-based compensation	6,984			—			—			—			—			6,984
	Deferred income taxes	—			—			7,735			(362		)	—			7,373
	Changes in current assets and liabilities, net of acquisitions of businesses:
	Accounts receivable, net	—			(9,495		)	(5,449		)	41			—			(14,903		)
	Inventories, net	—			(8,071		)	2,675			426			(288		)	(5,258		)
	Uniforms and other rental items in service	—			(4,274		)	(842		)	87			879			(4,150		)
	Prepaid expenses	—			(81		)	(7,416		)	281			—			(7,216		)
	Accounts payable	—			(1,001		)	4,147			(231		)	—			2,915
	Accrued compensation and related liabilities	—			(24,197		)	(8,765		)	(1,815		)	—			(34,777		)
	Accrued liabilities	—			(13,567		)	(11,060		)	(3,355		)	767			(27,215		)
	Income taxes payable	—			5,897			27,252			(491		)	—			32,658
	Net cash provided by operating activities	84,738			1,900			72,580			15,015			(91,674		)	82,559
	Cash flows from investing activities:
	Capital expenditures	—			(25,556		)	(8,804		)	(3,102		)	—			(37,462		)
	Proceeds from redemption of marketable securities	—			—			5,659			29,574			—			35,233
	Purchase of marketable securities and investments	—			(67		)	(23,946		)	(33,818		)	24,890			(32,941		)
	Acquisitions of businesses, net of cash acquired	—			(12,306		)	(1		)	(19,909		)	—			(32,216		)
	Other	5,309			45,815			(103,631		)	(14,662		)	67,551			382
	Net cash provided by (used in) investing activities	5,309			7,886			(130,723		)	(41,917		)	92,441			(67,004		)
	Cash flows from financing activities:
	Proceeds from issuance of debt	—			—			953			(953		)	—			—
	Repayment of debt	—			(416		)	1,016			—			(767		)	(167		)
	Exercise of stock-based compensation awards	14,085			—			—			—			—			14,085
	Repurchase of common stock	(106,977		)	—			—			—			—			(106,977		)
	Other	2,845			488			—			793			—			4,126
	Net cash (used in) provided by financing activities	(90,047		)	72			1,969			(160		)	(767		)	(88,933		)
	Effect of exchange rate changes on cash and cash equivalents	—			—			—			(225		)	—			(225		)
	Net increase (decrease) in cash and cash equivalents	—			9,858			(56,174		)	(27,287		)	—			(73,603		)
	Cash and cash equivalents at beginning of period	—			54,511			247,070			50,692			—			352,273
	Cash and cash equivalents at end of period	$	—		$	64,369		$	190,896		$	23,405		$	—		$	278,670
	Condensed Consolidating Statement of Cash Flows
	Three Months Ended August 31, 2012
	(In thousands)
		Cintas			Corp. 2			Subsidiary			Non-			Eliminations			Cintas
		Corporation						Guarantors			Guarantors						Corporation
																	Consolidated
	Cash flows from operating activities:
	Net income	$	76,733		$	23,592		$	50,272		$	3,532		$	(77,396	)	$	76,733
	Adjustments to reconcile net income to net cash provided by (used in) operating activities
	Depreciation	—			23,845			13,280			3,217			—			40,342
	Amortization of intangible assets	—			5,127			75			898			—			6,100
	Stock-based compensation	5,448			—			—			—			—			5,448
	Deferred income taxes	—			—			9,764			(48		)	—			9,716
	Changes in current assets and liabilities, net of acquisitions of businesses:
	Accounts receivable, net	—			(9,426		)	(880		)	3,178			—			(7,128		)
	Inventories, net	—			7,594			261			271			1,763			9,889
	Uniforms and other rental items in service	—			(4,140		)	(3,864		)	545			(1,213		)	(8,672		)
	Prepaid expenses	—			201			(5,478		)	(115		)	—			(5,392		)
	Accounts payable	—			(34,149		)	53,816			(3,389		)	—			16,278
	Accrued compensation and related liabilities	—			(35,526		)	(12,735		)	(2,532		)	—			(50,793		)
	Accrued liabilities	—			(20,442		)	(4,977		)	(2,767		)	786			(27,400		)
	Income taxes payable	—			5,845			24,635			(736		)	—			29,744
	Net cash provided by (used in) operating activities	82,181			(37,479		)	124,169			2,054			(76,060		)	94,865
Cash flows from investing activities:
Capital expenditures	—			(26,987		)	(15,169		)	(5,282		)	—			(47,438		)
Proceeds from redemption of marketable securities	—			—			—			24,720			—			24,720
Purchase of marketable securities and investments	—			529			(1,244		)	(35,445		)	(810		)	(36,970		)
Acquisitions of businesses, net of cash acquired	—			(1,343		)	—			(787		)	—			(2,130		)
Other	(7,928		)	57,262			(126,388		)	(25		)	77,656			577
Net cash (used in) provided by investing activities	(7,928		)	29,461			(142,801		)	(16,819		)	76,846			(61,241		)
Cash flows from financing activities:
Proceeds from issuance of debt	—			250,000			(477		)	477			—			250,000
Repayment of debt	—			(225,384		)	1,016			—			(786		)	(225,154		)
Exercise of stock-based compensation awards	1,119			—			—			—			—			1,119
Repurchase of common stock	(77,953		)	—			—			—			—			(77,953		)
Other	2,581			(5,453		)	—			(619		)	—			(3,491		)
Net cash (used in) provided by financing activities	(74,253		)	19,163			539			(142		)	(786		)	(55,479		)
Effect of exchange rate changes on cash and cash equivalents	—			—			—			1,247			—			1,247
Net increase (decrease) in cash and cash equivalents	—			11,145			(18,093		)	(13,660		)	—			(20,608		)
Cash and cash equivalents at beginning of period	—			58,737			229,287			51,801			—			339,825
Cash and cash equivalents at end of period	$	—		$	69,882		$	211,194		$	38,141		$	—		$	319,217

Basis_of_Presentation_Details

Basis of Presentation (Details) (USD $)	Aug. 31, 2013	31-May-13
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Raw materials	$17,389	$19,800
Work in process	15,712	17,353
Finished goods	212,369	203,287
Inventories, net	$245,470	$240,440

Fair_Value_Measurements_Financ

Fair Value Measurements (Financial Instruments on a Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Aug. 31, 2013	31-May-13
In Thousands, unless otherwise specified
Level 1 [Member]
Fair value on a recurring basis
Cash and cash equivalents	$278,670	$352,273
Accounts receivable, net		0
Total assets at fair value	278,670	352,273
Current accrued liabilities	0
Total liabilities at fair value	0
Level 1 [Member] | Canadian treasury securities [Member]
Fair value on a recurring basis
Marketable securities:	0
Level 1 [Member] | U.S. municipal bonds [Member]
Fair value on a recurring basis
Marketable securities:		0
Level 2 [Member]
Fair value on a recurring basis
Cash and cash equivalents	0	0
Accounts receivable, net		39
Total assets at fair value	4,189	5,719
Current accrued liabilities	107
Total liabilities at fair value	107
Level 2 [Member] | Canadian treasury securities [Member]
Fair value on a recurring basis
Marketable securities:	4,189
Level 2 [Member] | U.S. municipal bonds [Member]
Fair value on a recurring basis
Marketable securities:		5,680
Level 3 [Member]
Fair value on a recurring basis
Cash and cash equivalents	0	0
Accounts receivable, net		0
Total assets at fair value	0	0
Current accrued liabilities	0
Total liabilities at fair value	0
Level 3 [Member] | Canadian treasury securities [Member]
Fair value on a recurring basis
Marketable securities:	0
Level 3 [Member] | U.S. municipal bonds [Member]
Fair value on a recurring basis
Marketable securities:		0
Fair Value [Member]
Fair value on a recurring basis
Cash and cash equivalents	278,670	352,273
Accounts receivable, net		39
Total assets at fair value	282,859	357,992
Current accrued liabilities	107
Total liabilities at fair value	107
Fair Value [Member] | Canadian treasury securities [Member]
Fair value on a recurring basis
Marketable securities:	4,189
Fair Value [Member] | U.S. municipal bonds [Member]
Fair value on a recurring basis
Marketable securities:		$5,680

Fair_Value_Measurements_Narrat

Fair Value Measurements (Narrative) (Details) (USD $)	Aug. 31, 2013	31-May-13
In Millions, unless otherwise specified
Fair Value Disclosures [Abstract]
Amortized cost basis, marketable securities	$4.20	$5.70

Earnings_Per_Share_Computation

Earnings Per Share (Computation of Basic Earnings Per Share) (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Basic Earnings per Share
Net income	$77,754	$76,733
Less: net income allocated to participating unvested securities	460	365
Net income available to common shareholders	77,294	76,368
Basic weighted average common shares outstanding (shares)	122,130	126,110
Basic earnings per share (dollars per share)	$0.63	$0.61
Diluted Earnings per Share
Net income	77,754	76,733
Less: net income allocated to participating unvested securities	460	365
Net income available to common shareholders	$77,294	$76,368
Basic weighted average common shares outstanding (shares)	122,130	126,110
Effect of dilutive securities - employee stock options (shares)	762	348
Diluted weighted average common shares outstanding (shares)	122,892	126,458
Diluted earnings per share (dollars per share)	$0.63	$0.60

Earnings_Per_Share_Narrative_D

Earnings Per Share (Narrative) (Details) (USD $)	3 Months Ended		24 Months Ended			3 Months Ended	1 Months Ended
In Millions, except Share data, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012	Oct. 10, 2013	Jul. 30, 2013	Oct. 18, 2011	Aug. 31, 2013	Oct. 10, 2013
						Employee payroll taxes due on restricted stock [Member]	Subsequent Event [Member]
Earnings Per Share, Basic and Diluted [Line Items]
Options granted excluded from the computation of diluted earnings per share (shares)	600,000	800,000
Additional amount authorized under share buyback program				500,000,000	500,000,000
Common stock purchased under a share buyback program (shares)	2,100,000		11,400,000			100,000	900,000
Aggregate purchase price of common stock under a share buyback program	$100.80		$484.60			$6.20	$46.30
Average price of common stock purchased under a share buyback program (dollars per share)			$42.44			$47.67

Goodwill_Service_Contracts_and2

Goodwill, Service Contracts and Other Assets (Changes in Carrying Amount of Goodwill) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013
Goodwill [Roll Forward]
Balance at the beginning of the period	$1,517,560
Goodwill acquired	13,069
Foreign currency translation	377
Balance at the end of the period	1,531,006
Rental Uniforms and Ancillary Products [Member]
Goodwill [Roll Forward]
Balance at the beginning of the period	944,325
Goodwill acquired	0
Foreign currency translation	-271
Balance at the end of the period	944,054
Uniform Direct Sales [Member]
Goodwill [Roll Forward]
Balance at the beginning of the period	23,942
Goodwill acquired	0
Foreign currency translation	-7
Balance at the end of the period	23,935
First Aid, Safety and Fire Protection [Member]
Goodwill [Roll Forward]
Balance at the beginning of the period	216,989
Goodwill acquired	4,866
Foreign currency translation	0
Balance at the end of the period	221,855
Document Management [Member]
Goodwill [Roll Forward]
Balance at the beginning of the period	332,304
Goodwill acquired	8,203
Foreign currency translation	655
Balance at the end of the period	$341,162

Goodwill_Service_Contracts_and3

Goodwill, Service Contracts and Other Assets (Changes in Carrying Amount of Service Contracts) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013
Service contracts [Roll Forward]
Balance at the beginning of the period	$92,153
Service contracts acquired	6,151
Service contracts amortization	-5,319
Foreign currency translation	134
Balance at the end of the period	93,119
Rental Uniforms and Ancillary Products [Member]
Service contracts [Roll Forward]
Balance at the beginning of the period	23,135
Service contracts acquired	0
Service contracts amortization	-1,497
Foreign currency translation	-2
Balance at the end of the period	21,636
Uniform Direct Sales [Member]
Service contracts [Roll Forward]
Balance at the beginning of the period	0
Service contracts acquired	0
Service contracts amortization	0
Foreign currency translation	0
Balance at the end of the period	0
First Aid, Safety and Fire Protection [Member]
Service contracts [Roll Forward]
Balance at the beginning of the period	32,811
Service contracts acquired	2,876
Service contracts amortization	-2,013
Foreign currency translation	0
Balance at the end of the period	33,674
Document Management [Member]
Service contracts [Roll Forward]
Balance at the beginning of the period	36,207
Service contracts acquired	3,275
Service contracts amortization	-1,809
Foreign currency translation	136
Balance at the end of the period	$37,809

Goodwill_Service_Contracts_and4

Goodwill, Service Contracts and Other Assets (Information Regarding Service Contracts and Other Assets) (Details) (USD $)	Aug. 31, 2013		31-May-13
Information regarding service contracts and other assets
Service contracts, Net	$93,119,000		$92,153,000
Other Assets, Carrying Amount	202,159,000		202,099,000
Other Assets, Accumulated Amortization	78,727,000		77,709,000
Other Assets, Net	123,432,000		124,390,000
Cash surrender value of insurance policies	72,000,000		73,000,000
Equity method investments	27,700,000		27,600,000
Cost method investments	900,000		900,000
Noncompete and consulting agreements [Member]
Information regarding service contracts and other assets
Other Assets, Carrying Amount	78,833,000		77,863,000
Other Assets, Accumulated Amortization	73,608,000		72,970,000
Other Assets, Net	5,225,000		4,893,000
Investments [Member]
Information regarding service contracts and other assets
Other Assets, Carrying Amount	100,648,000	[1]	101,525,000	[1]
Other Assets, Accumulated Amortization	0	[1]	0	[1]
Other Assets, Net	100,648,000	[1]	101,525,000	[1]
Other [Member]
Information regarding service contracts and other assets
Other Assets, Carrying Amount	22,678,000		22,711,000
Other Assets, Accumulated Amortization	5,119,000		4,739,000
Other Assets, Net	17,559,000		17,972,000
Service Contracts [Member]
Information regarding service contracts and other assets
Service contracts, Carrying Amount	426,391,000		420,499,000
Service contracts, Accumulated Amortization	333,272,000		328,346,000
Service contracts, Net	$93,119,000		$92,153,000
[1]	Investments at August 31, 2013, include the cash surrender value of insurance policies of $72.0 million, equity method investments of $27.7 million and cost method investments of $0.9 million. Investments at May 31, 2013, include the cash surrender value of insurance policies of $73.0 million, equity method investments of $27.6 million and cost method investments of $0.9 million.

Goodwill_Service_Contracts_and5

Goodwill, Service Contracts and Other Assets (Narrative) (Details) (USD $)	3 Months Ended
	Aug. 31, 2013	Aug. 31, 2012
Goodwill, Service Contracts and Other Assets [Abstract]
Amortization expense	$5,823,000	$6,100,000
Estimated amortization expense, year one	22,400,000
Estimated amortization expense, year two	19,600,000
Estimated amortization expense, year three	14,300,000
Estimated amortization expense, year four	9,100,000
Estimated amortization expense, year five	7,900,000
Cost method investments, losses due to impairment	$0	$0

Debt_Derivatives_and_Hedging_A1

Debt, Derivatives and Hedging Activities (Details) (USD $)	3 Months Ended					0 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	31-May-13	Aug. 31, 2013	31-May-13	Jun. 02, 2012	Jun. 05, 2012
				Unsecured Debt [Member]	Unsecured Debt [Member]	Notes Due 2012 [Member]	Notes Due 2022 [Member]
						Senior Notes [Member]	Senior Notes [Member]
Line of Credit Facility [Line Items]
Long-term debt, carrying amount				$1,309,000,000	$1,309,200,000
Long-term debt, fair value				1,399,200,000	1,447,100,000
Commercial paper program availability	300,000,000
Revolving credit facility, maximum borrowing capacity with accordion feature	450,000,000
Revolving credit facility amount outstanding	0		0
Repayments of Long-term Debt	167,000	225,154,000				225,000,000
Debt Instrument, Interest Rate, Stated Percentage						6.00%	3.25%
Proceeds from Issuance of Long-term Debt	0	250,000,000					250,000,000
Amortization of interest rate lock agreements	500,000	500,000
Foreign currency derivatives	($100,000)		$100,000

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Aug. 31, 2013
Income Tax Disclosure [Abstract]
Unrecognized tax benefits, period increase	$0.20
Unrecognized tax benefits, decrease in accrued interest	0.1
Unrecognized tax benefits could decrease by approximately	0.6
Balance sheet reclass, change in tax regulations	$33.60

Litigation_and_Other_Contingen1

Litigation and Other Contingencies (Details) (Serrano lawsuit [Member])	1 Months Ended
	Sep. 30, 2010
	Individual
Serrano lawsuit [Member]
Loss Contingencies [Line Items]
Number of plaintiffs (individual)	13

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$38,123
Other comprehensive loss before reclassifications	-660
Amounts reclassified from accumulated other comprehensive loss	488
Other comprehensive (loss) income	-172	7,352
Ending balance	37,951
Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	51,312
Other comprehensive loss before reclassifications	-646
Amounts reclassified from accumulated other comprehensive loss	0
Other comprehensive (loss) income	-646
Ending balance	50,666
Unrealized Loss on Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	-14,339
Other comprehensive loss before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	488
Other comprehensive (loss) income	488
Ending balance	-13,851
Other [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	1,150
Other comprehensive loss before reclassifications	-14
Amounts reclassified from accumulated other comprehensive loss	0
Other comprehensive (loss) income	-14
Ending balance	$1,136

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Loss) (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$16,523	$16,598
Unrealized Loss on Derivatives [Member] | Reclassification out of accumulated other comprehensive income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$488

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012	31-May-13
	segment
Disclosures related to operating segments
Number of operating segments (segment)	4
Revenue	$1,120,343	$1,051,325
Income before income taxes	123,615	122,773
Total assets	4,311,177	4,157,035	4,345,632
Rental Uniforms and Ancillary Products [Member]
Disclosures related to operating segments
Revenue	792,866	754,843
Income before income taxes	117,393	116,907
Total assets	2,842,058	2,779,217
Uniform Direct Sales [Member]
Disclosures related to operating segments
Revenue	107,462	100,279
Income before income taxes	8,681	8,741
Total assets	143,993	125,094
First Aid, Safety and Fire Protection [Member]
Disclosures related to operating segments
Revenue	125,875	110,841
Income before income taxes	11,446	9,021
Total assets	410,633	359,387
Document Management [Member]
Disclosures related to operating segments
Revenue	94,140	85,362
Income before income taxes	2,550	4,625
Total assets	631,634	563,172
Corporate [Member]
Disclosures related to operating segments
Revenue	0	0
Income before income taxes	-16,455	-16,521
Total assets	$282,859	$330,165

Supplemental_Guarantor_Informa2

Supplemental Guarantor Information (Narrative) (Details) (USD $)	Aug. 31, 2013
In Millions, unless otherwise specified
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Long-term notes	$1,300

Supplemental_Guarantor_Informa3

Supplemental Guarantor Information (Condensed Consolidating Income Statement) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Revenue:
Rental uniforms and ancillary products	$792,866	$754,843
Other services	327,477	296,482
Equity in net income of affiliates	0	0
Total revenue	1,120,343	1,051,325
Costs and expenses (income):
Cost of rental uniforms and ancillary products	454,731	428,148
Cost of other services	199,632	177,302
Selling and administrative expenses	325,910	306,581
Operating income	140,070	139,294
Interest income	-68	-77
Interest expense (income)	16,523	16,598
Income before income taxes	123,615	122,773
Income taxes	45,861	46,040
Net income	77,754	76,733
Cintas Corporation [Member]
Revenue:
Rental uniforms and ancillary products	0	0
Other services	0	0
Equity in net income of affiliates	77,754	76,733
Total revenue	77,754	76,733
Costs and expenses (income):
Cost of rental uniforms and ancillary products	0	0
Cost of other services	0	0
Selling and administrative expenses	0	0
Operating income	77,754	76,733
Interest income	0	0
Interest expense (income)	0	0
Income before income taxes	77,754	76,733
Income taxes	0	0
Net income	77,754	76,733
Corp. 2 [Member]
Revenue:
Rental uniforms and ancillary products	605,758	576,285
Other services	404,574	369,406
Equity in net income of affiliates	0	0
Total revenue	1,010,332	945,691
Costs and expenses (income):
Cost of rental uniforms and ancillary products	383,719	364,197
Cost of other services	260,595	236,331
Selling and administrative expenses	308,761	290,644
Operating income	57,257	54,519
Interest income	-8	-18
Interest expense (income)	16,480	16,566
Income before income taxes	40,785	37,971
Income taxes	15,104	14,379
Net income	25,681	23,592
Subsidiary Guarantors [Member]
Revenue:
Rental uniforms and ancillary products	162,565	152,817
Other services	8,548	10,879
Equity in net income of affiliates	0	0
Total revenue	171,113	163,696
Costs and expenses (income):
Cost of rental uniforms and ancillary products	98,167	89,342
Cost of other services	-3,111	-2,417
Selling and administrative expenses	-4,859	-4,139
Operating income	80,916	80,910
Interest income	-53	-35
Interest expense (income)	44	31
Income before income taxes	80,925	80,914
Income taxes	29,968	30,642
Net income	50,957	50,272
Non-Guarantors [Member]
Revenue:
Rental uniforms and ancillary products	54,965	53,784
Other services	31,386	29,378
Equity in net income of affiliates	0	0
Total revenue	86,351	83,162
Costs and expenses (income):
Cost of rental uniforms and ancillary products	38,556	36,620
Cost of other services	19,064	17,708
Selling and administrative expenses	26,213	24,301
Operating income	2,518	4,533
Interest income	-14,694	-24
Interest expense (income)	-1	1
Income before income taxes	17,213	4,556
Income taxes	819	1,024
Net income	16,394	3,532
Eliminations [Member]
Revenue:
Rental uniforms and ancillary products	-30,422	-28,043
Other services	-117,031	-113,181
Equity in net income of affiliates	-77,754	-76,733
Total revenue	-225,207	-217,957
Costs and expenses (income):
Cost of rental uniforms and ancillary products	-65,711	-62,011
Cost of other services	-76,916	-74,320
Selling and administrative expenses	-4,205	-4,225
Operating income	-78,375	-77,401
Interest income	14,687	0
Interest expense (income)	0	0
Income before income taxes	-93,062	-77,401
Income taxes	-30	-5
Net income	($93,032)	($77,396)

Supplemental_Guarantor_Informa4

Supplemental Guarantor Information (Condensed Consolidated Statements of Comprehensive Income) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013		Aug. 31, 2012
Condensed Consolidating Financial Statements
Net income	$77,754		$76,733
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	-646		7,017
Change in fair value of derivatives	0	[1]	-151	[1]
Amortization of interest rate lock agreements	488	[2]	488	[2]
Change in fair value of available-for-sale securities	-14	[3]	-2	[3]
Other comprehensive (loss) income	-172		7,352
Comprehensive income	77,582		84,085
Cintas Corporation [Member]
Condensed Consolidating Financial Statements
Net income	77,754		76,733
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	0		0
Change in fair value of derivatives			0
Amortization of interest rate lock agreements	0		0
Change in fair value of available-for-sale securities	0		0
Other comprehensive (loss) income	0		0
Comprehensive income	77,754		76,733
Corp. 2 [Member]
Condensed Consolidating Financial Statements
Net income	25,681		23,592
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	7		8
Change in fair value of derivatives			-151
Amortization of interest rate lock agreements	488		488
Change in fair value of available-for-sale securities	0		0
Other comprehensive (loss) income	495		345
Comprehensive income	26,176		23,937
Subsidiary Guarantors [Member]
Condensed Consolidating Financial Statements
Net income	50,957		50,272
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	0		0
Change in fair value of derivatives			0
Amortization of interest rate lock agreements	0		0
Change in fair value of available-for-sale securities	-13		0
Other comprehensive (loss) income	-13		0
Comprehensive income	50,944		50,272
Non-Guarantors [Member]
Condensed Consolidating Financial Statements
Net income	16,394		3,532
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	-653		7,009
Change in fair value of derivatives			0
Amortization of interest rate lock agreements	0		0
Change in fair value of available-for-sale securities	-1		-2
Other comprehensive (loss) income	-654		7,007
Comprehensive income	15,740		10,539
Eliminations [Member]
Condensed Consolidating Financial Statements
Net income	-93,032		-77,396
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	0		0
Change in fair value of derivatives			0
Amortization of interest rate lock agreements	0		0
Change in fair value of available-for-sale securities	0		0
Other comprehensive (loss) income	0		0
Comprehensive income	($93,032)		($77,396)
[1]	Net of less than $0.1 million of tax expense for the three months ended August 31, 2012
[2]	Net of less than $0.1 million of tax benefit for the three months ended August 31, 2013 and 2012, respectively.
[3]	Net of less than $0.1 million of tax expense for the three months ended August 31, 2013 and 2012, respectively.

Supplemental_Guarantor_Informa5

Supplemental Guarantor Information (Condensed Consolidating Balance Sheet) (Details) (USD $)	Aug. 31, 2013	31-May-13	Aug. 31, 2012	31-May-12
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$278,670	$352,273	$319,217	$339,825
Marketable securities	4,189	5,680
Accounts receivable, net	511,642	496,049
Inventories, net	245,470	240,440
Uniforms and other rental items in service	500,384	496,752
Income taxes, current	0	9,102
Deferred tax asset (liability)	0	0
Prepaid expenses	31,934	24,530
Total current assets	1,572,289	1,624,826
Property and equipment, at cost, net	991,331	986,703
Goodwill	1,531,006	1,517,560
Service contracts, net	93,119	92,153
Other assets, net	123,432	124,390
Total assets	4,311,177	4,345,632	4,157,035
Current liabilities:
Accounts payable	124,952	121,029
Accrued compensation and related liabilities	43,247	78,050
Accrued liabilities	235,237	271,821
Income taxes, current	23,367	0
Deferred tax liability	80,692	77,169
Long-term debt due within one year	8,200	8,187
Total current liabilities	515,695	556,256
Long-term liabilities:
Long-term debt due after one year	1,300,799	1,300,979
Deferred income taxes	214,221	210,483
Accrued liabilities	84,451	76,422
Total long-term liabilities	1,599,471	1,587,884
Total shareholders’ equity	2,196,011	2,201,492
Total liabilities and shareholders' equity	4,311,177	4,345,632
Cintas Corporation [Member]
Current assets:
Cash and cash equivalents	0	0	0	0
Marketable securities	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Uniforms and other rental items in service	0	0
Income taxes, current	0	0
Deferred tax asset (liability)	0	0
Prepaid expenses	0	0
Total current assets	0	0
Property and equipment, at cost, net	0	0
Goodwill	0	0
Service contracts, net	0	0
Other assets, net	1,692,813	1,698,122
Total assets	1,692,813	1,698,122
Current liabilities:
Accounts payable	-465,247	-465,247
Accrued compensation and related liabilities	0	0
Accrued liabilities	0	0
Income taxes, current	0
Deferred tax liability	0	0
Long-term debt due within one year	0	0
Total current liabilities	-465,247	-465,247
Long-term liabilities:
Long-term debt due after one year	0	0
Deferred income taxes	0	0
Accrued liabilities	0	0
Total long-term liabilities	0	0
Total shareholders’ equity	2,158,060	2,163,369
Total liabilities and shareholders' equity	1,692,813	1,698,122
Corp. 2 [Member]
Current assets:
Cash and cash equivalents	64,369	54,511	69,882	58,737
Marketable securities	0	0
Accounts receivable, net	365,024	355,429
Inventories, net	209,299	201,260
Uniforms and other rental items in service	367,936	363,662
Income taxes, current	0	4,172
Deferred tax asset (liability)	526	534
Prepaid expenses	7,559	7,450
Total current assets	1,014,713	987,018
Property and equipment, at cost, net	631,172	631,480
Goodwill	0	0
Service contracts, net	87,264	88,157
Other assets, net	1,626,975	1,627,505
Total assets	3,360,124	3,334,160
Current liabilities:
Accounts payable	-567,870	-561,454
Accrued compensation and related liabilities	30,394	54,591
Accrued liabilities	51,115	67,490
Income taxes, current	1,719
Deferred tax liability	0	0
Long-term debt due within one year	8,470	8,436
Total current liabilities	-476,172	-430,937
Long-term liabilities:
Long-term debt due after one year	1,309,934	1,310,384
Deferred income taxes	-6	-6
Accrued liabilities	0	0
Total long-term liabilities	1,309,928	1,310,378
Total shareholders’ equity	2,526,368	2,454,719
Total liabilities and shareholders' equity	3,360,124	3,334,160
Subsidiary Guarantors [Member]
Current assets:
Cash and cash equivalents	190,896	247,070	211,194	229,287
Marketable securities	0	5,680
Accounts receivable, net	102,018	96,569
Inventories, net	22,909	25,584
Uniforms and other rental items in service	113,866	113,024
Income taxes, current	-2,166	3,437
Deferred tax asset (liability)	-526	-534
Prepaid expenses	20,324	12,909
Total current assets	447,321	503,739
Property and equipment, at cost, net	254,952	259,586
Goodwill	1,454,846	1,449,445
Service contracts, net	134	166
Other assets, net	2,804,237	2,698,197
Total assets	4,961,490	4,911,133
Current liabilities:
Accounts payable	1,095,369	1,084,986
Accrued compensation and related liabilities	8,877	17,642
Accrued liabilities	174,157	193,261
Income taxes, current	21,648
Deferred tax liability	71,872	68,231
Long-term debt due within one year	-270	-249
Total current liabilities	1,371,653	1,363,871
Long-term liabilities:
Long-term debt due after one year	-9,983	-11,020
Deferred income taxes	220,463	216,368
Accrued liabilities	83,613	75,571
Total long-term liabilities	294,093	280,919
Total shareholders’ equity	3,295,744	3,266,343
Total liabilities and shareholders' equity	4,961,490	4,911,133
Non-Guarantors [Member]
Current assets:
Cash and cash equivalents	23,405	50,692	38,141	51,801
Marketable securities	4,189	0
Accounts receivable, net	44,600	44,051
Inventories, net	9,720	10,342
Uniforms and other rental items in service	38,312	38,917
Income taxes, current	2,166	1,493
Deferred tax asset (liability)	0	0
Prepaid expenses	4,051	4,171
Total current assets	126,443	149,666
Property and equipment, at cost, net	105,207	95,637
Goodwill	76,160	68,115
Service contracts, net	5,721	3,830
Other assets, net	794,622	768,903
Total assets	1,108,153	1,086,151
Current liabilities:
Accounts payable	24,684	24,728
Accrued compensation and related liabilities	3,976	5,817
Accrued liabilities	9,965	11,837
Income taxes, current	0
Deferred tax liability	8,820	8,938
Long-term debt due within one year	0	0
Total current liabilities	47,445	51,320
Long-term liabilities:
Long-term debt due after one year	848	848
Deferred income taxes	-6,236	-5,879
Accrued liabilities	838	851
Total long-term liabilities	-4,550	-4,180
Total shareholders’ equity	1,065,258	1,039,011
Total liabilities and shareholders' equity	1,108,153	1,086,151
Eliminations [Member]
Current assets:
Cash and cash equivalents	0	0	0	0
Marketable securities	0	0
Accounts receivable, net	0	0
Inventories, net	3,542	3,254
Uniforms and other rental items in service	-19,730	-18,851
Income taxes, current	0	0
Deferred tax asset (liability)	0	0
Prepaid expenses	0	0
Total current assets	-16,188	-15,597
Property and equipment, at cost, net	0	0
Goodwill	0	0
Service contracts, net	0	0
Other assets, net	-6,795,215	-6,668,337
Total assets	-6,811,403	-6,683,934
Current liabilities:
Accounts payable	38,016	38,016
Accrued compensation and related liabilities	0	0
Accrued liabilities	0	-767
Income taxes, current	0
Deferred tax liability	0	0
Long-term debt due within one year	0	0
Total current liabilities	38,016	37,249
Long-term liabilities:
Long-term debt due after one year	0	767
Deferred income taxes	0	0
Accrued liabilities	0	0
Total long-term liabilities	0	767
Total shareholders’ equity	-6,849,419	-6,721,950
Total liabilities and shareholders' equity	($6,811,403)	($6,683,934)

Supplemental_Guarantor_Informa6

Supplemental Guarantor Information (Condensed Consolidating Statement of Cash Flows) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Cash flows from operating activities:
Net income	$77,754	$76,733
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	42,571	40,342
Amortization of intangible assets	5,823	6,100
Stock-based compensation	6,984	5,448
Deferred income taxes	7,373	9,716
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	-14,903	-7,128
Inventories, net	-5,258	9,889
Uniforms and other rental items in service	-4,150	-8,672
Prepaid expenses	-7,216	-5,392
Accounts payable	2,915	16,278
Accrued compensation and related liabilities	-34,777	-50,793
Accrued liabilities	-27,215	-27,400
Income taxes payable	32,658	29,744
Net cash provided by operating activities	82,559	94,865
Cash flows from investing activities:
Capital expenditures	-37,462	-47,438
Proceeds from redemption of marketable securities	35,233	24,720
Purchase of marketable securities and investments	-32,941	-36,970
Acquisitions of businesses, net of cash acquired	-32,216	-2,130
Other	382	577
Net cash used in investing activities	-67,004	-61,241
Cash flows from financing activities:
Proceeds from issuance of debt	0	250,000
Repayment of debt	-167	-225,154
Exercise of stock-based compensation awards	14,085	1,119
Repurchase of common stock	-106,977	-77,953
Other	4,126	-3,491
Net cash used in financing activities	-88,933	-55,479
Effect of exchange rate changes on cash and cash equivalents	-225	1,247
Net decrease in cash and cash equivalents	-73,603	-20,608
Cash and cash equivalents at beginning of period	352,273	339,825
Cash and cash equivalents at end of period	278,670	319,217
Cintas Corporation [Member]
Cash flows from operating activities:
Net income	77,754	76,733
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	0	0
Amortization of intangible assets	0	0
Stock-based compensation	6,984	5,448
Deferred income taxes	0	0
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	0	0
Inventories, net	0	0
Uniforms and other rental items in service	0	0
Prepaid expenses	0	0
Accounts payable	0	0
Accrued compensation and related liabilities	0	0
Accrued liabilities	0	0
Income taxes payable	0	0
Net cash provided by operating activities	84,738	82,181
Cash flows from investing activities:
Capital expenditures	0	0
Proceeds from redemption of marketable securities	0	0
Purchase of marketable securities and investments	0	0
Acquisitions of businesses, net of cash acquired	0	0
Other	5,309	-7,928
Net cash used in investing activities	5,309	-7,928
Cash flows from financing activities:
Proceeds from issuance of debt	0	0
Repayment of debt	0	0
Exercise of stock-based compensation awards	14,085	1,119
Repurchase of common stock	-106,977	-77,953
Other	2,845	2,581
Net cash used in financing activities	-90,047	-74,253
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Corp. 2 [Member]
Cash flows from operating activities:
Net income	25,681	23,592
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	25,690	23,845
Amortization of intangible assets	5,318	5,127
Stock-based compensation	0	0
Deferred income taxes	0	0
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	-9,495	-9,426
Inventories, net	-8,071	7,594
Uniforms and other rental items in service	-4,274	-4,140
Prepaid expenses	-81	201
Accounts payable	-1,001	-34,149
Accrued compensation and related liabilities	-24,197	-35,526
Accrued liabilities	-13,567	-20,442
Income taxes payable	5,897	5,845
Net cash provided by operating activities	1,900	-37,479
Cash flows from investing activities:
Capital expenditures	-25,556	-26,987
Proceeds from redemption of marketable securities	0	0
Purchase of marketable securities and investments	-67	529
Acquisitions of businesses, net of cash acquired	-12,306	-1,343
Other	45,815	57,262
Net cash used in investing activities	7,886	29,461
Cash flows from financing activities:
Proceeds from issuance of debt	0	250,000
Repayment of debt	-416	-225,384
Exercise of stock-based compensation awards	0	0
Repurchase of common stock	0	0
Other	488	-5,453
Net cash used in financing activities	72	19,163
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	9,858	11,145
Cash and cash equivalents at beginning of period	54,511	58,737
Cash and cash equivalents at end of period	64,369	69,882
Subsidiary Guarantors [Member]
Cash flows from operating activities:
Net income	50,957	50,272
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	13,305	13,280
Amortization of intangible assets	41	75
Stock-based compensation	0	0
Deferred income taxes	7,735	9,764
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	-5,449	-880
Inventories, net	2,675	261
Uniforms and other rental items in service	-842	-3,864
Prepaid expenses	-7,416	-5,478
Accounts payable	4,147	53,816
Accrued compensation and related liabilities	-8,765	-12,735
Accrued liabilities	-11,060	-4,977
Income taxes payable	27,252	24,635
Net cash provided by operating activities	72,580	124,169
Cash flows from investing activities:
Capital expenditures	-8,804	-15,169
Proceeds from redemption of marketable securities	5,659	0
Purchase of marketable securities and investments	-23,946	-1,244
Acquisitions of businesses, net of cash acquired	-1	0
Other	-103,631	-126,388
Net cash used in investing activities	-130,723	-142,801
Cash flows from financing activities:
Proceeds from issuance of debt	953	-477
Repayment of debt	1,016	1,016
Exercise of stock-based compensation awards	0	0
Repurchase of common stock	0	0
Other	0	0
Net cash used in financing activities	1,969	539
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	-56,174	-18,093
Cash and cash equivalents at beginning of period	247,070	229,287
Cash and cash equivalents at end of period	190,896	211,194
Non-Guarantors [Member]
Cash flows from operating activities:
Net income	16,394	3,532
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	3,576	3,217
Amortization of intangible assets	464	898
Stock-based compensation	0	0
Deferred income taxes	-362	-48
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	41	3,178
Inventories, net	426	271
Uniforms and other rental items in service	87	545
Prepaid expenses	281	-115
Accounts payable	-231	-3,389
Accrued compensation and related liabilities	-1,815	-2,532
Accrued liabilities	-3,355	-2,767
Income taxes payable	-491	-736
Net cash provided by operating activities	15,015	2,054
Cash flows from investing activities:
Capital expenditures	-3,102	-5,282
Proceeds from redemption of marketable securities	29,574	24,720
Purchase of marketable securities and investments	-33,818	-35,445
Acquisitions of businesses, net of cash acquired	-19,909	-787
Other	-14,662	-25
Net cash used in investing activities	-41,917	-16,819
Cash flows from financing activities:
Proceeds from issuance of debt	-953	477
Repayment of debt	0	0
Exercise of stock-based compensation awards	0	0
Repurchase of common stock	0	0
Other	793	-619
Net cash used in financing activities	-160	-142
Effect of exchange rate changes on cash and cash equivalents	-225	1,247
Net decrease in cash and cash equivalents	-27,287	-13,660
Cash and cash equivalents at beginning of period	50,692	51,801
Cash and cash equivalents at end of period	23,405	38,141
Eliminations [Member]
Cash flows from operating activities:
Net income	-93,032	-77,396
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	0	0
Amortization of intangible assets	0	0
Stock-based compensation	0	0
Deferred income taxes	0	0
Change in current assets and liabilities, net of acquisitions of businesses:
Accounts receivable, net	0	0
Inventories, net	-288	1,763
Uniforms and other rental items in service	879	-1,213
Prepaid expenses	0	0
Accounts payable	0	0
Accrued compensation and related liabilities	0	0
Accrued liabilities	767	786
Income taxes payable	0	0
Net cash provided by operating activities	-91,674	-76,060
Cash flows from investing activities:
Capital expenditures	0	0
Proceeds from redemption of marketable securities	0	0
Purchase of marketable securities and investments	24,890	-810
Acquisitions of businesses, net of cash acquired	0	0
Other	67,551	77,656
Net cash used in investing activities	92,441	76,846
Cash flows from financing activities:
Proceeds from issuance of debt	0	0
Repayment of debt	-767	-786
Exercise of stock-based compensation awards	0	0
Repurchase of common stock	0	0
Other	0	0
Net cash used in financing activities	-767	-786
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$0	$0