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Debt - Schedule of Long-term Borrowing Obligations (Parenthetical) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020	Mar. 28, 2020
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	$ 10,529	$ 12,686
Long-term Debt [Member] | Senior Notes
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	10,500	12,700	$ 14,100
Other Noncurrent Assets | Line of Credit
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	$ 3,800	$ 4,900

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+ References

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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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