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SCHEDULE I — CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY) - Narrative (Details) | 12 Months Ended
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Sep. 30, 2020 USD ($)
Guarantee Obligations [Line Items] |
Debt repayment in year 2021 | $ 53,000,000
Debt repayment in year 2022 | 339,000,000
Debt repayment in year 2023 | 147,000,000
Debt repayment in year 2024 | 1,516,000,000
Parent Company |
Guarantee Obligations [Line Items] |
Surety bonds indemnified | 80,000,000
Maximum amount authorized to guarantee obligations to suppliers and customers (up to) | 475,000,000
Current carrying value | 396,000,000
Debt repayment in year 2021 | 30,000,000
Debt repayment in year 2022 | 300,000,000
Debt repayment in year 2023 | 38,000,000
Debt repayment in year 2024 | $ 482,000,000

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