XML 54 R42.htm IDEA: XBRL DOCUMENT
v3.24.1

Earnings Per Share - Schedule of Buyback Activity by Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 29, 2024 | Nov. 30, 2023 | Aug. 31, 2023 | Feb. 28, 2023 | Nov. 30, 2022 | Aug. 31, 2022 | Feb. 29, 2024 | Feb. 28, 2023
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock purchased under share buyback | $ 45,018 | $ 349,852 | $ 73,276 | $ 22,235 | $ 28,348 | $ 320,334 | $ 468,146 | $ 370,917
Shares acquired for taxes due (in shares) | 74 |  |  | 49 |  |  | 277 | 375
Shares acquired for taxes due, average price (in dollars per share) | $ 604.51 |  |  | $ 448.79 |  |  | $ 533.65 | $ 414.23
Shares acquired for taxes due | $ 45,018 |  |  | $ 22,235 |  |  | $ 147,880 | $ 155,483
Share Buyback Programs |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock purchased under share buyback (in shares) | 0 |  |  | 0 |  |  | 658 | 544
Stock purchased under share buyback, average price (in dollars per share) | $ 0 |  |  | $ 0 |  |  | $ 486.58 | $ 395.97
Stock purchased under share buyback | $ 0 |  |  | $ 0 |  |  | $ 320,266 | $ 215,434
July 27, 2021 Plan |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock purchased under share buyback (in shares) | 0 |  |  | 0 |  |  | 658 | 544
Stock purchased under share buyback, average price (in dollars per share) | $ 0 |  |  | $ 0 |  |  | $ 486.58 | $ 395.97
Stock purchased under share buyback | $ 0 |  |  | $ 0 |  |  | $ 320,266 | $ 215,434
July 26, 2022 Plan |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock purchased under share buyback (in shares) | 0 |  |  | 0 |  |  | 0 | 0
Stock purchased under share buyback, average price (in dollars per share) | $ 0 |  |  | $ 0 |  |  | $ 0 | $ 0
Stock purchased under share buyback | $ 0 |  |  | $ 0 |  |  | $ 0 | $ 0

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-types1:perShareItemType
Balance Type: | na
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 -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481549/505-30-45-1 + 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 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + 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 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481549/505-30-45-1 + 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_ShareBuybackProgramJuly272021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=ctas_ShareBuybackProgramJuly262022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |