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v2.4.1.9

Goodwill, Service Contracts and Other Assets - Changes in Carrying Amount of Goodwill (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Feb. 28, 2015
Goodwill [Roll Forward] |
Balance as of June 1, 2014 | $ 1,267,411 us-gaap_Goodwill
Goodwill acquired | 7,386 us-gaap_GoodwillAcquiredDuringPeriod
Goodwill divested in the Storage transactions | (75,660)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit
Foreign currency translation | (4,748)us-gaap_GoodwillTranslationAdjustments
Balance as of February 28, 2015 | 1,194,389 us-gaap_Goodwill
Rental Uniforms & Ancillary Products |
Goodwill [Roll Forward] |
Balance as of June 1, 2014 | 943,516 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = ctas_RentalUniformsAndAncillaryProductsMember
Goodwill acquired | 70 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = ctas_RentalUniformsAndAncillaryProductsMember
Goodwill divested in the Storage transactions | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = ctas_RentalUniformsAndAncillaryProductsMember
Foreign currency translation | (2,204)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = ctas_RentalUniformsAndAncillaryProductsMember
Balance as of February 28, 2015 | 941,382 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = ctas_RentalUniformsAndAncillaryProductsMember
Uniform Direct Sales |
Goodwill [Roll Forward] |
Balance as of June 1, 2014 | 23,905 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = ctas_UniformDirectSalesMember
Goodwill acquired | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = ctas_UniformDirectSalesMember
Goodwill divested in the Storage transactions | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = ctas_UniformDirectSalesMember
Foreign currency translation | (125)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = ctas_UniformDirectSalesMember
Balance as of February 28, 2015 | 23,780 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = ctas_UniformDirectSalesMember
First Aid, Safety & Fire Protection |
Goodwill [Roll Forward] |
Balance as of June 1, 2014 | 221,911 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = ctas_FirstAidSafetyAndFireProtectionMember
Goodwill acquired | 7,316 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = ctas_FirstAidSafetyAndFireProtectionMember
Goodwill divested in the Storage transactions | 0 us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = ctas_FirstAidSafetyAndFireProtectionMember
Foreign currency translation | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = ctas_FirstAidSafetyAndFireProtectionMember
Balance as of February 28, 2015 | 229,227 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = ctas_FirstAidSafetyAndFireProtectionMember
Corporate |
Goodwill [Roll Forward] |
Balance as of June 1, 2014 | 78,079 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Goodwill acquired | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Goodwill divested in the Storage transactions | (75,660)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Foreign currency translation | (2,419)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Balance as of February 28, 2015 | $ 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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