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v2.4.1.9

Commitments and Contingencies (Details Textual) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Feb. 28, 2015 | Nov. 30, 2014 | Aug. 31, 2014 | Feb. 28, 2015 | May 31, 2014
Commitments and Contingencies (Textual) |  |  |  |  |
Commitments to purchase capital assets | $ 9,300,000 us-gaap_ContractualObligation |  |  | $ 9,300,000 us-gaap_ContractualObligation | $ 16,000,000 us-gaap_ContractualObligation
Line of Credit [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Amount outstanding | 0 us-gaap_ShortTermBorrowings / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember |  |  | 0 us-gaap_ShortTermBorrowings / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember |
Revolving Credit Facility [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Amount outstanding | 0 us-gaap_ShortTermBorrowings / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |  | 0 us-gaap_ShortTermBorrowings / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
Maximum amount outstanding during period | 0 us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember | 150,000,000 us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember | 100,000,000 us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Interest rate on amount borrowed | 0.00%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember | 3.25%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember | 3.25%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Maximum borrowing capacity | 750,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |  | 750,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
Expiration date |  |  |  | Jun. 21, 2018 |
Standby Letters of Credit [Member] |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Amount available | 43,000,000 payx_IrrevocableStandbyLettersOfCreditAmountAvailable / us-gaap_CreditFacilityAxis = us-gaap_StandbyLettersOfCreditMember |  |  | 43,000,000 payx_IrrevocableStandbyLettersOfCreditAmountAvailable / us-gaap_CreditFacilityAxis = us-gaap_StandbyLettersOfCreditMember | 43,000,000 payx_IrrevocableStandbyLettersOfCreditAmountAvailable / us-gaap_CreditFacilityAxis = us-gaap_StandbyLettersOfCreditMember
Expiration date range of letters of credit |  |  |  | April 2015 and December 2015 |
Irrevocable stand by letters of credit amount outstanding | $ 0 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_CreditFacilityAxis = us-gaap_StandbyLettersOfCreditMember |  |  | $ 0 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_CreditFacilityAxis = us-gaap_StandbyLettersOfCreditMember |

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