ASSOCIATE MEDICAL BENEFITS - Expected Benefit Payments Under the Plan By The Company and Retirees (Details) $ in Millions	Sep. 30, 2021 USD ($)
Gross Benefit Payments
Defined Benefit Plan Disclosure [Line Items]
2022	$ 2.0
2023	2.1
2024	2.0
2025	2.0
2026	2.1
2027 – 2031	10.4
Retiree Contribution
Defined Benefit Plan Disclosure [Line Items]
2022	0.5
2023	0.5
2024	0.5
2025	0.5
2026	0.6
2027 – 2031	3.6
Net Company Payments
Defined Benefit Plan Disclosure [Line Items]
2022	1.5
2023	1.6
2024	1.5
2025	1.5
2026	1.5
2027 – 2031	$ 6.8

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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