Quarterly report pursuant to Section 13 or 15(d)

Short-term Financing (Narrative) (Details)

v3.19.3.a.u2
Short-term Financing (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 01, 2019
Jul. 31, 2019
Aug. 05, 2015
Nov. 30, 2019
Nov. 30, 2018
Nov. 30, 2019
Nov. 30, 2018
May 31, 2019
JPM $1 Billion Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member] | Paychex of New York, LLC [Member]                
Financing [Line Items]                
Maximum borrowing capacity [1],[2]       $ 1,000,000   $ 1,000,000    
Expiration date [1],[2]           Jul. 31, 2024    
JPM $500 Million Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member] | Paychex of New York, LLC [Member]                
Financing [Line Items]                
Maximum borrowing capacity [1],[2]       500,000   $ 500,000    
Expiration date [1],[2]           Aug. 17, 2022    
Revolving Credit Facility [Member] | JPM $1 Billion Credit Facility [Member] | Paychex of New York, LLC [Member]                
Financing [Line Items]                
Term   5 years            
Maximum borrowing capacity   $ 1,000,000            
Revolving Credit Facility [Member] | JPM $1 Billion Credit Facility [Member] | Paychex of New York, LLC [Member]                
Financing [Line Items]                
Term     5 years          
Maximum borrowing capacity     $ 1,000,000          
Expiration date     Jul. 31, 2019          
Revolving Credit Facility [Member] | JPM $1 Billion Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member]                
Financing [Line Items]                
Amounts outstanding       0   $ 0   $ 0
Amount borrowed       $ 694,000 $ 483,000 $ 694,000 $ 483,000  
Number of days borrowed       10 days 4 days 16 days 10 days  
Weighted-average interest rate       4.99% 5.12% 5.09% 5.06%  
Weighted-average amount borrowed       $ 398,400 $ 389,800 $ 357,100 $ 285,700  
Revolving Credit Facility [Member] | JPM $500 Million Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member]                
Financing [Line Items]                
Amounts outstanding       0   0   0
Amount borrowed       $ 400,000 $ 135,500 $ 450,000 $ 223,000  
Number of days borrowed       14 days 3 days 24 days 7 days  
Weighted-average interest rate       3.15% 5.25% 3.21% 5.07%  
Weighted-average amount borrowed $ 168,200     $ 305,000 $ 83,000 $ 342,800 $ 111,800  
Revolving Credit Facility [Member] | JPM $500 Million Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member] | Three Days [Member]                
Financing [Line Items]                
Amount borrowed       $ 64,000   $ 64,000    
Number of days borrowed       3 days   3 days    
Weighted-average interest rate       4.75%   4.75%    
Revolving Credit Facility [Member] | JPM $500 Million Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member] | Eight Days [Member]                
Financing [Line Items]                
Amount borrowed           $ 450,000    
Number of days borrowed           8 days    
Revolving Credit Facility [Member] | JPM $500 Million Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member] | Eight Days [Member] | LIBOR [Member]                
Financing [Line Items]                
Weighted-average interest rate           3.00%    
Revolving Credit Facility [Member] | JPM $500 Million Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member] | Ten Days [Member]                
Financing [Line Items]                
Amount borrowed       $ 400,000   $ 400,000    
Number of days borrowed       10 days   10 days    
Revolving Credit Facility [Member] | JPM $500 Million Credit Facility [Member] | JP Morgan Chase Bank, N.A. [Member] | Ten Days [Member] | LIBOR [Member]                
Financing [Line Items]                
Weighted-average interest rate       3.00%   3.00%    
Revolving Credit Facility [Member] | PNC $150 Million Credit Facility [Member] | PNC Bank, National Association [Member]                
Financing [Line Items]                
Amounts outstanding       $ 51,300   $ 51,300   0
Amount borrowed       $ 56,700 $ 57,700 $ 56,700 $ 57,700  
Number of days borrowed       91 days 91 days 179 days 179 days  
Weighted-average interest rate       2.74% 2.68% 2.90% 2.61%  
Weighted-average amount borrowed       $ 54,300 $ 57,300 $ 54,600 $ 56,600  
Standby Letters of Credit [Member]                
Financing [Line Items]                
Maximum borrowing capacity       147,400   147,400   148,900
Amounts outstanding       $ 0 $ 0 $ 0 $ 0 $ 0
Minimum [Member] | Standby Letters of Credit [Member]                
Financing [Line Items]                
Expiration date           Dec. 31, 2019    
Maximum [Member] | Standby Letters of Credit [Member]                
Financing [Line Items]                
Expiration date           Nov. 30, 2020    
[1] Borrower is a wholly owned subsidiary of the Company.
[2] JPM acts as the administrative agent for this syndicated credit facility.