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v2.4.1.9

Basis of Presentation - Narrative (Details) (Shred-it Partnership) | 0 Months Ended |
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Apr. 30, 2014 | Apr. 30, 2014
Schedule of Equity Method Investments [Line Items] |  |
Percentage of newly formed partnership owned by Cintas | 42.00%us-gaap_EquityMethodInvestmentOwnershipPercentage | 42.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
Transition services period | 15 months |
Shred-it |  |
Schedule of Equity Method Investments [Line Items] |  |
Partnership, ownership percentage by third party | 58.00%ctas_PartnershipOwnershipPercentagebyThirdParty / dei_LegalEntityAxis = ctas_ShreditMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ctas_ShreditPartnershipMember | 58.00%ctas_PartnershipOwnershipPercentagebyThirdParty / dei_LegalEntityAxis = ctas_ShreditMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ctas_ShreditPartnershipMember

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Details
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