XML 40 R35.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Investments - Significant Unobservable Inputs (Details) (USD $) In Millions, unless otherwise specified | 0 Months Ended
--- | ---
Apr. 30, 2014
Shred-it Partnership |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Equity method investment, recorded at fair value | 339.4 us-gaap_EquityMethodInvestmentsFairValueDisclosure / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = ctas_ShreditPartnershipMember
Minimum |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
EBITDA Margin | 20.00%ctas_FairValueInputsEarningsbeforeInterestTaxesDepreciationandAmortizationMargin / us-gaap_RangeAxis = us-gaap_MinimumMember
Ratio of capital expenditures to revenues | 4.50%ctas_FairValueInputsCapitalExpenditurestoRevenuesRatio / us-gaap_RangeAxis = us-gaap_MinimumMember
Long-term revenue growth rate | 1.50%us-gaap_FairValueInputsLongTermRevenueGrowthRate / us-gaap_RangeAxis = us-gaap_MinimumMember
WACC Rate | 9.00%us-gaap_FairValueInputsDiscountRate / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
EBITDA Margin | 22.00%ctas_FairValueInputsEarningsbeforeInterestTaxesDepreciationandAmortizationMargin / us-gaap_RangeAxis = us-gaap_MaximumMember
Ratio of capital expenditures to revenues | 5.50%ctas_FairValueInputsCapitalExpenditurestoRevenuesRatio / us-gaap_RangeAxis = us-gaap_MaximumMember
Long-term revenue growth rate | 2.00%us-gaap_FairValueInputsLongTermRevenueGrowthRate / us-gaap_RangeAxis = us-gaap_MaximumMember
WACC Rate | 9.00%us-gaap_FairValueInputsDiscountRate / us-gaap_RangeAxis = us-gaap_MaximumMember

X
- Definition Fair Value Inputs, Capital Expenditures to Revenues Ratio + References No definition available. + Details
Name: | ctas_FairValueInputsCapitalExpenditurestoRevenuesRatio
Namespace Prefix: | ctas_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair Value Inputs, Earnings before Interest, Taxes, Depreciation, and Amortization Margin + References No definition available. + Details
Name: | ctas_FairValueInputsEarningsbeforeInterestTaxesDepreciationandAmortizationMargin
Namespace Prefix: | ctas_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of investments accounted under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35740979&loc=d3e32014-111567 + Details
Name: | us-gaap_EquityMethodInvestmentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of assumed long-term growth in revenues, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsLongTermRevenueGrowthRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ctas_ShreditPartnershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |