XML 32 R20.htm IDEA: XBRL DOCUMENT
v3.25.2

Summary Of Significant Accounting Policies (Tables) | 9 Months Ended
--- | ---
Jun. 30, 2025
Accounting Policies [Abstract] |
Schedule of Allowance for Uncollectible Accounts | Activity in the allowance for uncollectible accounts for the nine months ended June 30, 2025 and 2024 are as follows (in thousands):
| Balance at Beginning of Period |  | Additions Charged to Costs and Expenses |  | Discounts on Purchased Receivables |  | Net Accounts Receivable Written-Off |  | Balance at End of Period
Nine Months Ended June 30, 2025 |  |  |  |  |  |  |  |  |
Allowance for Uncollectible Accounts | $ | 26,194 |  |  | $ | 17,758 |  |  | $ | 807 |  |  | $ | (21,027) |  |  | $ | 23,732 |
Nine Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Allowance for Uncollectible Accounts | $ | 36,295 |  |  | $ | 11,774 |  |  | $ | 698 |  |  | $ | (16,145) |  |  | $ | 32,622 |
Components of Accumulated Other Comprehensive Income (Loss) | The components of Accumulated Other Comprehensive Income (Loss) and changes for the nine months ended June 30, 2025 and 2024, net of related tax effect, are as follows (amounts in parentheses indicate debits) (in thousands):
| Gains and Losses on Derivative Financial Instruments |  |  |  | Funded Status of the Pension and Other Post-Retirement Benefit Plans |  | Total
Three Months Ended June 30, 2025 |  |  |  |  |  |  |
Balance at April 1, 2025 | $ | (151,700) |  |  |  |  | $ | (71,275) |  |  | $ | (222,975) |
Other Comprehensive Gains and Losses Before Reclassifications | 108,818 |  |  |  |  | — |  |  | 108,818 |
Amounts Reclassified From Other Comprehensive Loss | (1,650) |  |  |  |  | — |  |  | (1,650) |
Balance at June 30, 2025 | $ | (44,532) |  |  |  |  | $ | (71,275) |  |  | $ | (115,807) |
Nine Months Ended June 30, 2025 |  |  |  |  |  |  |
Balance at October 1, 2024 | $ | 55,799 |  |  |  |  | $ | (71,275) |  |  | $ | (15,476) |
Other Comprehensive Gains and Losses Before Reclassifications | (83,082) |  |  |  |  | — |  |  | (83,082) |
Amounts Reclassified From Other Comprehensive Loss | (17,249) |  |  |  |  | — |  |  | (17,249) |
Balance at June 30, 2025 | $ | (44,532) |  |  |  |  | $ | (71,275) |  |  | $ | (115,807) |
Three Months Ended June 30, 2024 |  |  |  |  |  |  |
Balance at April 1, 2024 | $ | 135,023 |  |  |  |  | $ | (59,683) |  |  | $ | 75,340 |
Other Comprehensive Gains and Losses Before Reclassifications | (15,850) |  |  |  |  | — |  |  | (15,850) |
Amounts Reclassified From Other Comprehensive Income | (54,440) |  |  |  |  | — |  |  | (54,440) |
Balance at June 30, 2024 | $ | 64,733 |  |  |  |  | $ | (59,683) |  |  | $ | 5,050 |
Nine Months Ended June 30, 2024 |  |  |  |  |  |  |
Balance at October 1, 2023 | $ | 4,623 |  |  |  |  | $ | (59,683) |  |  | $ | (55,060) |
Other Comprehensive Gains and Losses Before Reclassifications | 172,249 |  |  |  |  | — |  |  | 172,249 |
Amounts Reclassified From Other Comprehensive Income | (112,139) |  |  |  |  | — |  |  | (112,139) |
Balance at June 30, 2024 | $ | 64,733 |  |  |  |  | $ | (59,683) |  |  | $ | 5,050 |
Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) | The details about the reclassification adjustments out of accumulated other comprehensive income (loss) for the nine months ended June 30, 2025 and 2024 are as follows (amounts in parentheses indicate debits to the income statement) (in thousands):
Details About Accumulated Other Comprehensive Income (Loss) Components |  | Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Affected Line Item in the Statement Where Net Income is Presented
| Three Months Ended June 30, |  | Nine Months Ended June 30, |
| 2025 |  | 2024 |  | 2025 |  | 2024 |
Gains (Losses) on Derivative Financial Instrument Cash Flow Hedges: |  |  |  |  |  |  |  |  |  |
Commodity Contracts |  | $2,515 |  |  | $75,462 |  |  | $24,409 |  |  | $155,401 |  |  | Operating Revenues
Foreign Currency Contracts |  | (257) |  |  | (116) |  |  | (808) |  |  | (198) |  |  | Operating Revenues
|  | 2,258 |  |  | 75,346 |  |  | 23,601 |  |  | 155,203 |  |  | Total Before Income Tax
|  | (608) |  |  | (20,906) |  |  | (6,352) |  |  | (43,064) |  |  | Income Tax Expense
|  | $1,650 |  |  | $54,440 |  |  | $17,249 |  |  | $112,139 |  |  | Net of Tax
Schedule of Other Current Assets | The components of the Company’s Other Current Assets are as follows (in thousands):
| At June 30, 2025 |  | At September 30, 2024
Prepayments | $ | 22,810 |  |  | $ | 18,463 |
Prepaid Property and Other Taxes | 11,703 |  |  | 14,187 |
Federal Income Taxes Receivable | — |  |  | 8,154 |
State Income Taxes Receivable | 2,072 |  |  | 13,161 |
Regulatory Assets | 27,656 |  |  | 38,264 |
| $ | 64,241 |  |  | $ | 92,229 |
Schedule of Other Accruals and Current Liabilities | The components of the Company’s Other Accruals and Current Liabilities are as follows (in thousands):
| At June 30, 2025 |  | At September 30, 2024
Accrued Capital Expenditures | $ | 59,166 |  |  | $ | 47,344 |
Regulatory Liabilities | 18,650 |  |  | 29,352 |
Reserve for Gas Replacement | 12,706 |  |  | — |
Liability for Royalty and Working Interests | 28,203 |  |  | 15,007 |
Federal Income Taxes Payable | 15,336 |  |  | — |
Non-Qualified Benefit Plan Liability | 14,135 |  |  | 14,135 |
Other | 58,983 |  |  | 57,065 |
| $ | 207,179 |  |  | $ | 162,903 |

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_AccountsReceivableAllowanceForCreditLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
Name: | us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 + Details
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amounts of other current assets. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration