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SCHEDULE I — CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY) - Narrative (Details) - Parent Company
$ in Millions
12 Months Ended
Sep. 30, 2024
USD ($)
Guarantee Obligations [Line Items]  
Surety bonds indemnified $ 110
Maximum amount authorized to guarantee obligations to suppliers and customers (up to) 475
Current carrying value $ 371