XML 24 R79.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Accumulated Other Comprehensive Income (Loss) (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
May 31, 2014
Equity [Abstract] |
Amortization of interest rate locks | $ (3,130)
Tax benefit | 1,178
Amortization of interest rate locks, net of tax | $ (1,952)

X
- Definition Other Comprehensive Income (Loss), Amortization of Interest Rate Lock Agreements, before Tax + References No definition available. + Details
Name: | ctas_OtherComprehensiveIncomeLossAmortizationofInterestRateLockAgreementsbeforeTax
Namespace Prefix: | ctas_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Comprehensive Income (Loss), Amortization of Interest Rate Lock Agreements, Net of Tax + References No definition available. + Details
Name: | ctas_OtherComprehensiveIncomeLossAmortizationofInterestRateLockAgreementsNetofTax
Namespace Prefix: | ctas_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Comprehensive Income (Loss), Other Adjustments, Tax + References No definition available. + Details
Name: | ctas_OtherComprehensiveIncomeLossOtherAdjustmentsTax
Namespace Prefix: | ctas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration