Paychex, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Description of Business, Basis of Presentation, and Significant Accounting Policies (Policy)
Notes Tables
Notes Details

Description of Business, Basis of Presentation, and Significant Accounting Policies (Narrative) (Details)

v3.20.1

Description of Business, Basis of Presentation, and Significant Accounting Policies (Narrative) (Details) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 01, 2019 USD ($)	Feb. 29, 2020 USD ($)	Feb. 28, 2019 USD ($)	Feb. 29, 2020 USD ($) segment	Feb. 28, 2019 USD ($)	May 31, 2020 USD ($)	May 31, 2019 USD ($)
Accounting Policies [Line Items]
Number of reportable segments \| segment				1
Allowance for doubtful accounts		$ 12.1		$ 12.1			$ 7.5
Advance collections		8.1		8.1			4.2
Maximum individual health insurance claims liability							0.3
Operating lease, impairment loss				0.0
Stock-based compensation costs recognized		12.7	$ 10.8	36.5	$ 33.6
Operating lease, right-of-use asset		124.3		124.3
Operating lease, liability		142.7		142.7
Forecast [Member]
Accounting Policies [Line Items]
Maximum individual workers' compensation claims liability						$ 1.0
Maximum individual health insurance claims liability						$ 0.3
ASU 2016-02 [Member]
Accounting Policies [Line Items]
Increase in lease-related assets and liabilities	$ 116.4
Operating lease, right-of-use asset	116.4
Operating lease, liability	135.3
Unamortized landlord allowances and lease incentives	$ 18.9
Trade Receivables [Member]
Accounting Policies [Line Items]
Receivables		98.7		98.7			94.5
Purchased Receivables [Member]
Accounting Policies [Line Items]
Receivables		$ 349.7		$ 349.7			333.5
Minimum [Member]
Accounting Policies [Line Items]
Maximum individual workers' compensation claims liability							0.5
Maximum [Member]
Accounting Policies [Line Items]
Maximum individual workers' compensation claims liability							$ 1.0
Europe [Member] \| Revenue [Member] \| Geographic Concentration Risk [Member]
Accounting Policies [Line Items]
Total percentage		1.00%	1.00%	1.00%	1.00%
Europe [Member] \| Long Lived Assets [Member] \| Geographic Concentration Risk [Member]
Accounting Policies [Line Items]
Total percentage				5.00%			5.00%

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