XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.22.1

Earnings per Share - Summary of Buyback Activity by Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended | 21 Months Ended
--- | --- | --- | ---
Feb. 28, 2022 | Nov. 30, 2021 | Aug. 31, 2021 | Feb. 28, 2021 | Nov. 30, 2020 | Aug. 31, 2020 | Feb. 28, 2022 | Feb. 28, 2021 | Jul. 26, 2021
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock purchased under share buyback | $ 569,115 | $ 5,491 | $ 659,235 | $ 83,108 | $ 2,371 | $ 69,011 |  |  |
Shares acquired for taxes due (in shares) | 50 |  |  | 4 |  |  | 261 | 241 |
Shares acquired for taxes due, average price (in dollars per share) | $ 390.60 |  |  | $ 332.73 |  |  | $ 394.84 | $ 301.49 |
Shares acquired for taxes due | $ 19,460 |  |  | $ 1,151 |  |  | $ 102,966 | $ 72,533 |
Total repurchase of Cintas common stock | $ 557,115 |  |  | $ 83,108 |  |  | $ 1,221,841 | $ 154,490 |
Share Buyback Programs |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock purchased under share buyback (shares) | 1,386 |  |  | 256 |  |  | 2,976 | 256 |
Stock purchased under share buyback, average price (in dollars per share) | $ 388.03 |  |  | $ 320.30 |  |  | $ 375.94 | $ 320.30 |
Stock purchased under share buyback | $ 537,655 |  |  | $ 81,957 |  |  | $ 1,118,875 | $ 81,957 |
October 30, 2018 Plan |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock purchased under share buyback (shares) |  |  |  | 190 |  |  |  | 190 |
Stock purchased under share buyback, average price (in dollars per share) |  |  |  | $ 319.88 |  |  |  | $ 319.88 |
Stock purchased under share buyback |  |  |  | $ 60,877 |  |  |  | $ 60,877 |
October 29, 2019 Plan |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock purchased under share buyback (shares) | 0 |  |  | 66 |  |  | 1,590 | 66 | 2,800
Stock purchased under share buyback, average price (in dollars per share) | $ 0 |  |  | $ 321.51 |  |  | $ 365.41 | $ 321.51 | $ 358.93
Stock purchased under share buyback | $ 0 |  |  | $ 21,080 |  |  | $ 581,220 | $ 21,080 | $ 1,000,000
July 27, 2021 Plan |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock purchased under share buyback (shares) | 1,386 |  |  |  |  |  | 1,386 |  |
Stock purchased under share buyback, average price (in dollars per share) | $ 388.03 |  |  |  |  |  | $ 388.03 |  |
Stock purchased under share buyback | $ 537,655 |  |  |  |  |  | $ 537,655 |  |

X
- Definition Share-Based Payment Arrangement, Shares Withheld For Tax Withholding Obligation, Average Cost + References No definition available. + Details
Name: | ctas_ShareBasedPaymentArrangementSharesWithheldForTaxWithholdingObligationAverageCost
Namespace Prefix: | ctas_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Treasury Stock, Value, Acquired, Cost Method, And Share Based Payment Arrangement, Decrease For Tax Withholding Obligation + References No definition available. + Details
Name: | ctas_TreasuryStockValueAcquiredCostMethodAndShareBasedPaymentArrangementDecreaseForTaxWithholdingObligation
Namespace Prefix: | ctas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of decrease to equity for grantee's tax withholding obligation for award under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
Name: | us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=ctas_ShareBuybackProgramsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=ctas_ShareBuybackProgramOctober2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=ctas_ShareBuybackProgramOctober2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=ctas_ShareBuybackProgramJuly272021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |