ASSOCIATE MEDICAL BENEFITS - Additional Information (Details) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Sep. 30, 2022
USD ($)
Year
|
Sep. 30, 2021
USD ($)
|
Sep. 30, 2020
USD ($)
|
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Self-insurance per occurrence | $ 1.0 | ||
| Benefits cost recognized | $ 46.6 | $ 43.7 | $ 34.2 |
| Health care cost trend rate (percent) | 7.50% | ||
| Ultimate trend rate (percent) | 5.00% | ||
| U.S. Plan | Postretirement Medical Benefits | |||
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Minimum retirement age (in years) | Year | 55 | ||
| Number of years of service (in years) | 10 years | ||
| Net periodic benefit (income) | $ (0.2) | $ (0.2) | $ (0.1) |