Service Revenue (Summary of PEO Pass-Through Costs Netted in Revenue) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Aug. 31, 2021 |
Aug. 31, 2020 |
|
| Service Revenue [Abstract] | ||
| Payroll wages and payroll taxes | $ 5,600.0 | $ 4,900.0 |
| State unemployment insurance (included in payroll wages and payroll taxes) | 15.4 | 12.8 |
| Guaranteed cost benefit plans | $ 150.9 | $ 150.4 |
| X | ||||||||||
- Definition Direct Pass Through Cost Guaranteed Cost Benefit Plans No definition available.
|
| X | ||||||||||
- Definition Direct Pass Through Cost Payroll Wages And Taxes Including Federal And State Unemployment Insurance No definition available.
|
| X | ||||||||||
- Definition Direct Pass Through Cost State Unemployment Insurance No definition available.
|
| X | ||||||||||
- References No definition available.
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