Document and Entity Information
Document and Entity Information - shares | 9 Months Ended | |
Sep. 30, 2021 | Nov. 01, 2021 | |
Document and Entity Information [Abstract] | ||
Document Type | 10-Q | |
Document Quarterly Report | true | |
Document Period End Date | Sep. 30, 2021 | |
Document Transition Report | false | |
Entity File Number | 1-7584 | |
Entity Registrant Name | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | |
Entity Incorporation, State or Country Code | DE | |
Entity Tax Identification Number | 74-1079400 | |
Entity Address, Address Line One | 2800 Post Oak Boulevard | |
Entity Address, City or Town | Houston | |
Entity Address, State or Province | TX | |
Entity Address, Postal Zip Code | 77056 | |
City Area Code | 713 | |
Local Phone Number | 215-2000 | |
Entity Current Reporting Status | Yes | |
Entity Interactive Data Current | Yes | |
Entity Filer Category | Non-accelerated Filer | |
Entity Small Business | false | |
Entity Emerging Growth Company | false | |
Entity Shell Company | false | |
Entity Central Index Key | 0000099250 | |
Amendment Flag | false | |
Document Fiscal Year Focus | 2021 | |
Document Fiscal Period Focus | Q3 | |
Current Fiscal Year End Date | --12-31 | |
Entity Common Stock, Shares Outstanding | 0 |
Condensed Statement of Net Inco
Condensed Statement of Net Income (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | |
Operating Revenues: | ||||
Natural gas sales | $ 19,506 | $ 21,393 | $ 49,733 | $ 61,373 |
Natural gas transportation | 600,615 | 557,947 | 1,754,417 | 1,676,243 |
Natural gas storage | 41,950 | 42,208 | 125,809 | 119,637 |
Other | 3,814 | 4,407 | 10,942 | 11,761 |
Total operating revenues | 665,885 | 625,955 | 1,940,901 | 1,869,014 |
Operating Costs and Expenses: | ||||
Cost of natural gas sales | 19,506 | 21,393 | 49,733 | 61,373 |
Operation and maintenance | 110,746 | 95,798 | 302,661 | 278,968 |
Administrative and general | 55,085 | 46,793 | 152,262 | 139,728 |
Depreciation and amortization | 122,159 | 115,821 | 357,715 | 343,291 |
Taxes - other than income taxes | 23,235 | 20,441 | 72,181 | 64,872 |
Regulatory credit resulting from tax rate changes | (7,688) | (7,688) | (23,064) | (23,064) |
Other expense, net | 9,310 | 3,821 | 13,987 | 8,563 |
Total operating costs and expenses | 332,353 | 296,379 | 925,475 | 873,731 |
Operating Income | 333,532 | 329,576 | 1,015,426 | 995,283 |
Other (Income) and Other Expenses: | ||||
Interest expense | 80,328 | 80,545 | 240,763 | 232,403 |
Allowance for equity and borrowed funds used during construction (AFUDC) | (7,080) | 2,729 | (16,801) | (17,518) |
Miscellaneous other (income) expenses, net | 273 | 588 | 226 | 737 |
Total other (income) and other expenses | 73,521 | 83,862 | 224,188 | 215,622 |
Net Income | $ 260,011 | $ 245,714 | $ 791,238 | $ 779,661 |
Condensed Balance Sheet (Unaudi
Condensed Balance Sheet (Unaudited) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020 |
Current Assets: | ||
Cash | $ 0 | $ 0 |
Receivables: | ||
Affiliates | 6,402 | 1,011 |
Advances to affiliate | 1,448,300 | 642,734 |
Trade | 215,634 | 223,864 |
Other | 16,652 | 14,660 |
Transportation and exchange gas receivables | 5,816 | 4,627 |
Inventories | 62,882 | 56,297 |
Regulatory assets | 81,937 | 62,861 |
Other | 19,254 | 13,847 |
Total current assets | 1,856,877 | 1,019,901 |
Property, Plant and Equipment | ||
Natural gas transmission plant | 17,582,511 | 17,123,779 |
Less-Accumulated depreciation and amortization | 5,129,262 | 4,802,256 |
Total property, plant and equipment, net | 12,453,249 | 12,321,523 |
Other Assets: | ||
Regulatory assets | 269,525 | 281,870 |
Right-of-use assets | 68,345 | 78,899 |
Other | 272,683 | 252,051 |
Total other assets | 610,553 | 612,820 |
Total Assets | 14,920,679 | 13,954,244 |
Payables: | ||
Affiliates | 84,774 | 32,676 |
Trade and other | 192,569 | 128,449 |
Transportation and exchange gas payables | 3,893 | 1,905 |
Regulatory liabilities | 58,199 | 57,086 |
Accrued liabilities | 255,079 | 242,379 |
Long-term debt due within one year | 24,213 | 22,640 |
Total current liabilities | 618,727 | 485,135 |
Long-Term Debt | 5,202,681 | 5,217,140 |
Other Long-Term Liabilities: | ||
Asset retirement obligations | 478,407 | 397,737 |
Regulatory liabilities | 926,582 | 946,774 |
Deferred revenue | 197,107 | 205,030 |
Lease liability | 67,398 | 78,688 |
Other | 73,648 | 42,921 |
Total other long-term liabilities | 1,743,142 | 1,671,150 |
Contingent Liabilities and Commitments (Note 3) | ||
Member's Equity | ||
Member's capital | 4,815,499 | 4,543,499 |
Retained earnings | 2,540,630 | 2,037,320 |
Total member's equity | 7,356,129 | 6,580,819 |
Total liabilities and member's equity | $ 14,920,679 | $ 13,954,244 |
Condensed Statement of Member's
Condensed Statement of Member's Equity (Unaudited) - USD ($) $ in Thousands | Total | Member's Capital | Retained Earnings [Member] |
Balance at beginning of period at Dec. 31, 2019 | $ 4,428,499 | $ 2,177,284 | |
Cash contributions from parent | $ 65,000 | 65,000 | |
Net Income | 779,661 | 779,661 | |
Cash distributions to parent | (785,000) | (785,000) | |
Balance at end of period at Sep. 30, 2020 | 6,665,444 | 4,493,499 | 2,171,945 |
Balance at beginning of period at Jun. 30, 2020 | 4,428,499 | 2,176,231 | |
Cash contributions from parent | 65,000 | ||
Net Income | 245,714 | 245,714 | |
Cash distributions to parent | (250,000) | ||
Balance at end of period at Sep. 30, 2020 | 6,665,444 | 4,493,499 | 2,171,945 |
Balance at beginning of period at Dec. 31, 2020 | 6,580,819 | 4,543,499 | 2,037,320 |
Cash contributions from parent | 272,000 | 272,000 | |
Net Income | 791,238 | 791,238 | |
Cash distributions to parent | (287,928) | (287,928) | |
Balance at end of period at Sep. 30, 2021 | 7,356,129 | 4,815,499 | 2,540,630 |
Balance at beginning of period at Jun. 30, 2021 | 4,676,499 | 2,337,177 | |
Cash contributions from parent | 139,000 | ||
Net Income | 260,011 | 260,011 | |
Cash distributions to parent | (56,558) | ||
Balance at end of period at Sep. 30, 2021 | $ 7,356,129 | $ 4,815,499 | $ 2,540,630 |
Condensed Statement of Cash Flo
Condensed Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands | 9 Months Ended | |
Sep. 30, 2021 | Sep. 30, 2020 | |
Cash flows from operating activities: | ||
Net Income | $ 791,238 | $ 779,661 |
Adjustments to reconcile net income to net cash provided by (used in) operating activities: | ||
Depreciation and amortization | 357,715 | 343,291 |
Allowance for equity funds used during construction (equity AFUDC) | (12,959) | (10,855) |
Regulatory credit resulting from tax rate changes | (23,064) | (23,064) |
Changes in operating assets and liabilities: | ||
Receivables - affiliates | (5,391) | (296) |
Receivables - trade and other | 6,238 | 39,968 |
Transportation and exchange gas receivable | (1,189) | 1,684 |
Inventories | (6,585) | (6,065) |
Payables - affiliates | 52,098 | (7,525) |
Payables - trade | 24,841 | (18,288) |
Accrued liabilities | 37,400 | 24,460 |
Reserve for rate refunds | 0 | (188,842) |
Asset retirement obligations | 5,446 | (12,105) |
Deferred revenue | (7,922) | (7,925) |
Other, net | (42,867) | (6,322) |
Net cash provided by operating activities | 1,174,999 | 907,777 |
Cash flows from financing activities: | ||
Proceeds from long-term debt | 0 | 1,195,629 |
Proceeds from other financing obligations | 1,790 | 7,248 |
Payments on other financing obligations | (16,663) | (14,848) |
Payments for debt issuance costs | (59) | (11,209) |
Cash distributions to parent | (287,928) | (785,000) |
Cash contributions from parent | 272,000 | 65,000 |
Advances from affiliate, net | 0 | (252,549) |
Net cash provided by (used in) financing activities | (30,860) | 204,271 |
Cash flows from investing activities: | ||
Capital expenditures | (355,662) | (504,987) |
Contributions and advances for construction costs | 34,102 | 20,850 |
Disposal of property, plant and equipment, net | (20,545) | (33,553) |
Advances to affiliate, net | (805,566) | (581,665) |
Purchase of ARO Trust investments | (23,174) | (46,075) |
Proceeds from sale of ARO Trust investments | 26,706 | 33,382 |
Net cash used in investing activities | (1,144,139) | (1,112,048) |
Increase to property, plant and equipment, exclusive of equity AFUDC | (378,004) | (456,158) |
Changes in related accounts payable and accrued liabilities | 22,342 | (48,829) |
Capital expenditures | (355,662) | (504,987) |
Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] | ||
Increase (decrease) in cash | 0 | 0 |
Cash at beginning of period | 0 | 0 |
Cash at end of period | $ 0 | $ 0 |
Basis of Presentation (Notes)
Basis of Presentation (Notes) | 9 Months Ended |
Sep. 30, 2021 | |
Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Basis of Presentation | Basis of Presentation In this report, Transcontinental Gas Pipe Line Company, LLC (Transco) is at times referred to in the first person as “we,” “us” or “our.” Transco is indirectly owned by The Williams Companies, Inc. (Williams). General The accompanying condensed unaudited financial statements have been prepared from our books and records. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been condensed or omitted in this Form 10-Q pursuant to Securities and Exchange Commission rules and regulations. The condensed unaudited financial statements include all normal recurring adjustments and others which, in the opinion of our management, are necessary to present fairly our interim financial statements. These condensed unaudited financial statements should be read in conjunction with the financial statements and the notes thereto included in our 2020 Annual Report on Form 10-K. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed unaudited financial statements and accompanying notes. Actual results could differ from those estimates. A reclassification within Operating Costs and Expenses in the Condensed Statement of Net Income to include Cost of natural gas transportation within Operation and maintenance of approximately $15.2 million and $42.1 million for the three and nine months ended September 30, 2020, respectively, has been made to conform to the 2021 presentation. |
Revenue Recognition (Notes)
Revenue Recognition (Notes) | 9 Months Ended |
Sep. 30, 2021 | |
Revenue Recognition [Abstract] | |
Revenue from Contract with Customer [Text Block] | Revenue Recognition Revenue by Category Our revenue disaggregation by major service line includes Natural gas sales , Natural gas transportation , Natural gas storage , and Other , which are separately presented on the Condensed Statement of Net Income. Contract Liabilities The following table presents a reconciliation of our contract liabilities: Three Months Ended Nine Months Ended 2021 2020 2021 2020 (Thousands) Balance at beginning of period $ 210,317 $ 220,882 $ 215,596 $ 226,164 Recognized in revenue (2,643) (2,643) (7,922) (7,925) Balance at end of period $ 207,674 $ 218,239 $ 207,674 $ 218,239 Remaining Performance Obligations Our remaining performance obligations primarily include reservation charges on contracted capacity on our firm transportation and storage contracts with customers. Amounts from certain contracts included in the table below, which are subject to periodic review and approval by the Federal Energy Regulatory Commission (FERC), reflect the rates for such services in our current FERC tariffs, net of estimated reserve for refund, for the life of the related contracts; however, these rates may change based on future tariffs approved by the FERC and the amount and timing of these changes is not currently known. This table excludes the variable consideration component for commodity charges. Certain of our contracts contain evergreen provisions for periods beyond the initial term of the contract. The remaining performance obligations, as of September 30, 2021, do not consider potential future performance obligations for which the renewal has not been exercised. The table below also does not include contracts with customers for which the underlying facilities have not received FERC authorization to be placed into service. The following table presents the amount of the contract liabilities balance expected to be recognized as revenue when performance obligations are satisfied and the transaction price allocated to the remaining performance obligations under certain contracts as of September 30, 2021. Contract Liabilities Remaining Performance Obligations (Thousands) 2021 (three months) $ 2,644 $ 603,677 2022 (one year) 10,566 2,317,047 2023 (one year) 10,566 2,114,147 2024 (one year) 10,568 1,886,688 2025 (one year) 10,566 1,469,382 Thereafter 162,764 12,280,513 Total $ 207,674 $ 20,671,454 Accounts Receivable Receivables from contracts with customers are included within Receivables - Trade and Receivables - Affiliates, and receivables that are not related to contracts with customers are included within the balance of Receivables - Advances to affiliate and Receivables - Other in our Condensed Balance Sheet. |
Contingent Liabilities and Comm
Contingent Liabilities and Commitments (Notes) | 9 Months Ended |
Sep. 30, 2021 | |
Commitments and Contingencies Disclosure [Abstract] | |
Contingent Liabilities and Commitments | Contingent Liabilities and Commitments Environmental Matters We have had studies underway for many years to test some of our facilities for the presence of toxic and hazardous substances such as polychlorinated biphenyls (PCBs) and mercury to determine to what extent, if any, remediation may be necessary. We have also similarly evaluated past on-site disposal of hydrocarbons at a number of our facilities. We have worked closely with and responded to data requests from the U.S. Environmental Protection Agency (EPA) and state agencies regarding such potential contamination of certain of our sites. We are conducting environmental assessments and implementing a variety of remedial measures that may result in increases or decreases in the total estimated costs. At September 30, 2021, we have accrued approximately $2.6 million for the expense portion of these estimated costs, $0.7 million of which is recorded in Accrued liabilities and $1.9 million of which is recorded in Other Long-Term Liabilities - Other in the accompanying Condensed Balance Sheet. At December 31, 2020, we had a balance of approximately $2.4 million for the expense portion of these estimated costs, $0.7 million of which is recorded in Accrued liabilities and $1.7 million of which is recorded in Other Long-Term Liabilities - Other in the accompanying Condensed Balance Sheet. We have been identified as a potentially responsible party (PRP) at various Superfund and state waste disposal sites. Based on present volumetric estimates and other factors, our estimated aggregate exposure for remediation of these sites is less than $0.5 million. The estimated remediation costs for all of these sites are included in the environmental liabilities discussed above. Liability under the Comprehensive Environmental Response, Compensation and Liability Act and applicable state law can be joint and several with other PRPs. Although volumetric allocation is a factor in assessing liability, it is not necessarily determinative; thus, the ultimate liability could be substantially greater than the amounts described above. The EPA and various state regulatory agencies routinely propose and promulgate new rules, and issue updated guidance to existing rules. These rulemakings include, but are not limited to, rules for reciprocating internal combustion engine and combustion turbine maximum achievable control technology, review and updates to the National Ambient Air Quality Standards, and rules for new and existing source performance standards for volatile organic compounds and methane. We continuously monitor these regulatory changes and how they may impact our operations. Implementation of new or modified regulations may result in impacts to our operations and increase the cost additions to Property, plant, and equipment, net in the Condensed Balance Sheet for both new and existing facilities in affected areas; however, due to regulatory uncertainty on final rule content and applicability timeframes, we are unable to reasonably estimate the cost of these regulatory impacts at this time. We consider prudently incurred environmental assessment and remediation costs and the costs associated with compliance with environmental standards to be recoverable through rates. To date, we have been permitted recovery of environmental costs, and it is our intent to continue seeking recovery of such costs through future rate filings. Other Matters Various other proceedings are pending against us and are considered incidental to our operations. Summary We estimate that for all matters for which we are able to reasonably estimate a range of loss, including those noted above and others that are not individually significant, our aggregate reasonably possible losses beyond amounts accrued for all of our contingent liabilities are immaterial to our expected future annual results of operations, liquidity and financial position. These calculations have been made without consideration of any potential recovery from third parties. We have disclosed all significant matters for which we are unable to reasonably estimate a range of possible loss. |
Debt and Financing Arrangements
Debt and Financing Arrangements (Notes) | 9 Months Ended |
Sep. 30, 2021 | |
Debt Disclosure [Abstract] | |
Debt and Financing Arrangements | Debt and Financing Arrangements Commercial Paper Williams participates in a commercial paper program and Williams’ management considers amounts outstanding under this program to be a reduction of available capacity under the credit facility. The program allows a maximum outstanding amount at any time of $4.0 billion of unsecured commercial paper notes. At September 30, 2021, Williams had no outstanding commercial paper. In connection with the amended and restated credit agreement described below, Williams reduced the size of its commercial paper program to $3.5 billion. Credit Facility In October 2021, we, along with Williams and Northwest Pipeline LLC (Northwest), the lenders named therein, and an administrative agent entered into an amended and restated credit agreement (Credit Agreement) that reduced aggregate commitments available from $4.5 billion to $3.75 billion, with up to an additional $500 million increase in aggregate commitments available under certain circumstances. The Credit Agreement was effective on October 8, 2021. The maturity date of the credit facility is October 8, 2026. However, the co-borrowers may request up to two extensions of the maturity date each for an additional one-year period to allow a maturity date as late as October 8, 2028, under certain circumstances. The Credit Agreement allows for swing line loans up to an aggregate of $200 million, subject to available capacity under the credit facility, and letters of credit commitments of $500 million. We and Northwest are each able to borrow up to $500 million under this credit facility to the extent not otherwise utilized by the other co-borrowers. At September 30, 2021, and as of October 8, 2021, the effective date of the amended and restated Credit Agreement, no letters of credit have been issued and no loans were outstanding under the credit facility. The Credit Agreement contains the following terms and conditions: • Various covenants may limit, among other things, a borrower’s and its material subsidiaries’ ability to grant certain liens supporting indebtedness, merge or consolidate, sell all or substantially all of its assets in certain circumstances, make certain distributions during an event of default, and each borrower and each borrower’s respective material subsidiaries’ ability to enter into certain restrictive agreements. • If an event of default with respect to a borrower occurs under the credit facility, the lenders will be able to terminate the commitments for the respective borrowers and accelerate the maturity of the loans of the defaulting borrower under the credit facility and exercise other rights and remedies. • Other than swing line loans, each time funds are borrowed, the applicable borrower may choose from two methods of calculating interest: a fluctuating base rate equal to an alternative base rate as defined in the Credit Agreement plus an applicable margin or a periodic fixed rate equal to the London Interbank Offered Rate (LIBOR) plus an applicable margin. Williams is required to pay a commitment fee based on the unused portion of the credit facility. The applicable margin is determined by reference to a pricing schedule based on the applicable borrower’s senior unsecured long-term debt ratings and the commitment fee is determined by reference to a pricing schedule based on Williams’ senior unsecured long-term debt ratings. The Credit Agreement also includes customary provisions to provide for replacement of LIBOR with an alternative benchmark rate when LIBOR ceases to be available. The ratio of debt to capitalization (defined as net worth plus debt), each as defined in the Credit Agreement, must be no greater than 65 percent for each of Transco and Northwest Pipeline. At September 30, 2021, we are in compliance with this covenant. Other Financing Obligations Dalton Expansion Project At September 30, 2021, the amount included in Long-Term Debt on our Condensed Balance Sheet for this financing obligation is $252.5 million, and the amount included in Long-term debt due within one year on our Condensed Balance Sheet for this financing obligation is $2.5 million. Atlantic Sunrise Project During the first nine months of 2021, we received an additional $1.8 million of funding from a co-owner for its proportionate share of construction costs related to its undivided ownership interest in certain parts of the project. This additional funding is reflected in Long-Term Debt on our Condensed Balance Sheet. At September 30, 2021, the amount included in Long-Term Debt on our Condensed Balance Sheet for this financing obligation is $812.4 million, and the amount included in Long-term debt due within one year on our Condensed Balance Sheet for this financing obligation is $21.7 million. Leidy South Project During the construction of our Leidy South project, we received funding from a co-owner for its proportionate share of construction costs related to an undivided ownership interest in certain parts of the project. Amounts received were recorded in Other Long-Term Liabilities: Other and 100 percent of the costs associated with construction were capitalized on our Condensed Balance Sheet. Upon placing the applicable portion of the project in service during October 2021, we began leasing this co-owner’s undivided interest in the facilities, including the associated pipeline capacity, and reclassified approximately $69.0 million of funding previously received from our co-owner from Other Long-Term Liabilities: Other to debt to reflect the financing obligation payable to our co-owner over an expected term of 20 years. |
ARO Trust (Notes)
ARO Trust (Notes) | 9 Months Ended |
Sep. 30, 2021 | |
Investments, Debt and Equity Securities [Abstract] | |
ARO Trust | ARO Trust We are entitled to collect in rates the amounts necessary to fund our asset retirement obligations (ARO). We deposit monthly, into an external trust account (ARO Trust), the revenues specifically designated for ARO. The ARO Trust carries a moderate risk portfolio. The Money Market Funds held in our ARO Trust are considered investments. We measure the financial instruments held in our ARO Trust at fair value. However, in accordance with the ASC Topic 980, Regulated Operations, both realized and unrealized gains and losses of the ARO Trust are recorded as regulatory assets or liabilities. Pursuant to the approved stipulation and agreement in Docket No. RP18-1126 the annual funding obligation effective March 1, 2020 is approximately $16.0 million, with deposits made monthly. Investments within the ARO Trust at fair value were as follows (in millions): September 30, 2021 December 31, 2020 Amortized Fair Amortized Fair Money Market Funds $ 3.4 $ 3.4 $ 5.8 $ 5.8 U.S. Equity Funds 52.6 111.6 59.9 108.0 International Equity Funds 31.7 42.9 34.2 43.7 Municipal Bond Funds 87.5 89.9 74.9 78.0 Total $ 175.2 $ 247.8 $ 174.8 $ 235.5 |
Fair Value Measurements (Notes)
Fair Value Measurements (Notes) | 9 Months Ended |
Sep. 30, 2021 | |
Fair Value Disclosures [Abstract] | |
Fair Value Measurements | Fair Value Measurements The following table presents, by level within the fair value hierarchy, certain of our financial assets and liabilities. The carrying values of short-term financial assets (advances to affiliate) that have variable interest rates, accounts receivable and accounts payable approximate fair value because of the short-term nature of these instruments. Therefore, these assets and liabilities are not presented in the following table. Fair Value Measurements Using Carrying Fair Value Quoted Significant Significant (Millions) Assets (liabilities) at September 30, 2021: Measured on a recurring basis: ARO Trust investments $ 247.8 $ 247.8 $ 247.8 $ — $ — Additional disclosures: Long-term debt, including current portion (5,226.9) (6,700.8) — (6,700.8) — Assets (liabilities) at December 31, 2020: Measured on a recurring basis: ARO Trust investments $ 235.5 $ 235.5 $ 235.5 $ — $ — Additional disclosures: Long-term debt, including current portion (5,239.8) (6,949.0) — (6,949.0) — Fair Value Methods The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value: ARO Trust investments — We deposit a portion of our collected rates, pursuant to the terms of the Docket No. RP18-1126 rate case settlement, into the ARO Trust, which is specifically designated to fund future asset retirement obligations. The ARO Trust invests in a portfolio of actively traded mutual funds that are measured at fair value on a recurring basis based on quoted prices in an active market and are reported in Other Assets-Other in the Condensed Balance Sheet. However, both realized and unrealized gains and losses are ultimately recorded as regulatory assets or liabilities. (See Note 5 – ARO Trust for more information regarding the ARO Trust.) Long-term debt, including current portion — The disclosed fair value of our long-term debt is determined primarily by a market approach using broker quoted indicative period-end bond prices. The quoted prices are based on observable transactions in less active markets for our debt or similar instruments. The fair value of the financing obligations associated with our Dalton and Atlantic Sunrise expansions, which are included within long-term debt, were determined using an income approach (See Note 4 – Debt and Financing Arrangements). |
Transactions with Affiliates (N
Transactions with Affiliates (Notes) | 9 Months Ended |
Sep. 30, 2021 | |
Related Party Transactions [Abstract] | |
Related Party Transactions Disclosure [Text Block] | Transactions with Affiliates We are a participant in Williams’ cash management program, and we receive advances from and make advances to Williams. At September 30, 2021 and December 31, 2020, our advances to Williams totaled approximately $1,448.3 million and $642.7 million, respectively. These advances are classified as Receivables - Advances to affiliate in the accompanying Condensed Balance Sheet. Advances are stated at the historical carrying amounts. The interest rate on these intercompany demand notes is based upon the daily overnight investment rate paid on Williams’ excess cash at the end of each month. At September 30, 2021, the interest rate was 0.01 percent. Included in Operating Revenues in the accompanying Condensed Statement of Net Income are revenues received from affiliates of $15.4 million and $20.1 million for the three and nine months ended September 30, 2021, respectively, and $2.8 million and $8.0 million for the three and nine months ended September 30, 2020, respectively. The rates charged to provide sales and services to affiliates are the same as those that are charged to similarly-situated nonaffiliated customers. Included in Cost of natural gas sales in the accompanying Condensed Statement of Net Income are costs of gas purchased from affiliates of $1.4 million and $5.5 million for the three and nine months ended September 30, 2021, respectively, and $0.8 million and $3.8 million for the three and nine months ended September 30, 2020, respectively. All gas purchases are made at market or contract prices. We have no employees. Services necessary to operate our business are provided to us by Williams and certain affiliates of Williams. We reimburse Williams and its affiliates for all direct and indirect expenses incurred or payments made (including salary, bonus, incentive compensation and benefits) in connection with these services. Employees of Williams also provide general, administrative and management services to us, and we are charged for certain administrative expenses incurred by Williams. These charges are either directly identifiable or allocated to our assets. Direct charges are for goods and services provided by Williams at our request. Allocated charges are based on a three-factor formula, which considers revenues; property, plant and equipment; and payroll. In management’s estimation, the allocation methodologies used are reasonable and result in a reasonable allocation to us of our costs of doing business incurred by Williams. In the accompanying Condensed Statement of Net Income, we have recorded approximately $82.1 million and $237.8 million for the three and nine months ended September 30, 2021, respectively, and $68.7 million and $214.5 million for the three and nine months ended September 30, 2020, respectively, for these service expenses, which are primarily included in Operation and maintenance and Administrative and general expenses. We provide services to certain of our affiliates. We recorded reductions in operating expenses for services provided to and reimbursed by our affiliates of $1.9 million and $5.4 million for the three and nine months ended September 30, 2021, respectively, and $1.6 million and $3.8 million for the three and nine months ended September 30, 2020, respectively. We made cash distributions totaling $287.9 million and $785.0 million during the nine months ended September 30, 2021 and 2020, respectively. During October 2021, we made a distribution of $55.8 million. Our parent made contributions to us totaling $272.0 million and $65.0 million during the nine months ended September 30, 2021 and 2020, respectively, to fund a portion of our expenditures for additions to property, plant, and equipment. During October 2021, our parent made an additional $145.0 million contribution to us. |
Revenue Recognition Revenue Rec
Revenue Recognition Revenue Recognition (Tables) | 9 Months Ended |
Sep. 30, 2021 | |
Revenue Recognition [Abstract] | |
Contract with Customer, Asset and Liability [Table Text Block] | The following table presents a reconciliation of our contract liabilities: Three Months Ended Nine Months Ended 2021 2020 2021 2020 (Thousands) Balance at beginning of period $ 210,317 $ 220,882 $ 215,596 $ 226,164 Recognized in revenue (2,643) (2,643) (7,922) (7,925) Balance at end of period $ 207,674 $ 218,239 $ 207,674 $ 218,239 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] | The following table presents the amount of the contract liabilities balance expected to be recognized as revenue when performance obligations are satisfied and the transaction price allocated to the remaining performance obligations under certain contracts as of September 30, 2021. Contract Liabilities Remaining Performance Obligations (Thousands) 2021 (three months) $ 2,644 $ 603,677 2022 (one year) 10,566 2,317,047 2023 (one year) 10,566 2,114,147 2024 (one year) 10,568 1,886,688 2025 (one year) 10,566 1,469,382 Thereafter 162,764 12,280,513 Total $ 207,674 $ 20,671,454 |
ARO Trust (Tables)
ARO Trust (Tables) | 9 Months Ended |
Sep. 30, 2021 | |
Investments, Debt and Equity Securities [Abstract] | |
ARO Trust | Investments within the ARO Trust at fair value were as follows (in millions): September 30, 2021 December 31, 2020 Amortized Fair Amortized Fair Money Market Funds $ 3.4 $ 3.4 $ 5.8 $ 5.8 U.S. Equity Funds 52.6 111.6 59.9 108.0 International Equity Funds 31.7 42.9 34.2 43.7 Municipal Bond Funds 87.5 89.9 74.9 78.0 Total $ 175.2 $ 247.8 $ 174.8 $ 235.5 |
Fair Value Measurements (Tables
Fair Value Measurements (Tables) | 9 Months Ended |
Sep. 30, 2021 | |
Fair Value Disclosures [Abstract] | |
Fair Value Measurements | The following table presents, by level within the fair value hierarchy, certain of our financial assets and liabilities. The carrying values of short-term financial assets (advances to affiliate) that have variable interest rates, accounts receivable and accounts payable approximate fair value because of the short-term nature of these instruments. Therefore, these assets and liabilities are not presented in the following table. Fair Value Measurements Using Carrying Fair Value Quoted Significant Significant (Millions) Assets (liabilities) at September 30, 2021: Measured on a recurring basis: ARO Trust investments $ 247.8 $ 247.8 $ 247.8 $ — $ — Additional disclosures: Long-term debt, including current portion (5,226.9) (6,700.8) — (6,700.8) — Assets (liabilities) at December 31, 2020: Measured on a recurring basis: ARO Trust investments $ 235.5 $ 235.5 $ 235.5 $ — $ — Additional disclosures: Long-term debt, including current portion (5,239.8) (6,949.0) — (6,949.0) — |
Organization, Consolidation and
Organization, Consolidation and Presentation of Financial Statements (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | ||
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | |
Reclassification [Line Items] | ||||
Operation and maintenance | $ 110,746 | $ 95,798 | $ 302,661 | $ 278,968 |
Previously Reported [Member] | ||||
Reclassification [Line Items] | ||||
Cost of natural gas transportation | 15,200 | 42,100 | ||
Revision of Prior Period, Reclassification, Adjustment [Member] | ||||
Reclassification [Line Items] | ||||
Operation and maintenance | $ 15,200 | $ 42,100 |
Revenue Recognition Revenue R_2
Revenue Recognition Revenue Recogntion Contract Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | ||||||
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | |
Contract With Customer, Liability [Line Items] | ||||||||
Contract with Customer, Liability | $ 207,674 | $ 218,239 | $ 207,674 | $ 218,239 | $ 210,317 | $ 215,596 | $ 220,882 | $ 226,164 |
Recognized in revenue | $ (2,643) | $ (2,643) | $ (7,922) | $ (7,925) |
Revenue Recognition Contract Li
Revenue Recognition Contract Liabilities Performance Obligation (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Contract with Customer, Liability | $ 207,674 | $ 210,317 | $ 215,596 | $ 218,239 | $ 220,882 | $ 226,164 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01 | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Contract with Customer, Liability | $ 2,644 | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01 | Performance Obligations Related To Contract Liabilities [Member] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 3 months | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Contract with Customer, Liability | $ 10,566 | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Performance Obligations Related To Contract Liabilities [Member] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 1 year | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Contract with Customer, Liability | $ 10,566 | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Performance Obligations Related To Contract Liabilities [Member] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 1 year | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Contract with Customer, Liability | $ 10,568 | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Performance Obligations Related To Contract Liabilities [Member] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 1 year | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Contract with Customer, Liability | $ 10,566 | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Performance Obligations Related To Contract Liabilities [Member] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 1 year | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Contract with Customer, Liability | $ 162,764 | |||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Performance Obligations Related To Contract Liabilities [Member] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | ||||||
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period |
Revenue Recognition Remaining P
Revenue Recognition Remaining Performance Obligation (Details) $ in Thousands | Sep. 30, 2021USD ($) |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Amount | $ 20,671,454 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01 | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Amount | $ 603,677 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01 | Remaining Performance Obligations [Member] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 3 months |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Amount | $ 2,317,047 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Remaining Performance Obligations [Member] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 1 year |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Amount | $ 2,114,147 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Remaining Performance Obligations [Member] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 1 year |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Amount | $ 1,886,688 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Remaining Performance Obligations [Member] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 1 year |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Amount | $ 1,469,382 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Remaining Performance Obligations [Member] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 1 year |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Amount | $ 12,280,513 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Remaining Performance Obligations [Member] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period |
Contingent Liabilities and Co_2
Contingent Liabilities and Commitments (Details) - USD ($) $ in Millions | 9 Months Ended | |
Sep. 30, 2021 | Dec. 31, 2020 | |
Environmental assessment and remediation [Member] | ||
Site Contingency [Line Items] | ||
Accrued environmental assessment and remediation costs, total | $ 2.6 | $ 2.4 |
Accrued environmental assessment and remediation costs, current | 0.7 | 0.7 |
Accrued environmental assessment and remediation costs, noncurrent | 1.9 | $ 1.7 |
Potentially responsible party at various Superfund and state waste disposal sites [Member] | Maximum [Member] | ||
Site Contingency [Line Items] | ||
Site Contingency, Loss Exposure Not Accrued, Best Estimate | $ 0.5 |
Debt and Financing Arrangemen_2
Debt and Financing Arrangements Line of Credit Facility (Details) - USD ($) $ in Millions | Oct. 08, 2021 | Sep. 30, 2021 |
Williams Companies Inc | ||
Line of Credit Facility [Line Items] | ||
Commercial paper, outstanding | $ 0 | |
Credit Agreement Member] | ||
Line of Credit Facility [Line Items] | ||
Letters of Credit Outstanding, Amount | 0 | |
Line of credit facility, loans outstanding | 0 | |
Credit Agreement Member] | Subsequent Event | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | $ 500 | |
Letters of Credit Outstanding, Amount | 0 | |
Line of credit facility, loans outstanding | $ 0 | |
Maximum ratio of debt to capitalization | 65.00% | |
Credit Agreement Member] | Williams Companies Inc | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | 4,500 | |
Credit Agreement Member] | Williams Companies Inc | Subsequent Event | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | $ 3,750 | |
Additional Amount By Which Credit Facility Can Be Increased | 500 | |
Commercial Paper | Williams Companies Inc | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | $ 4,000 | |
Commercial Paper | Williams Companies Inc | Subsequent Event | ||
Line of Credit Facility [Line Items] | ||
Line of Credit Facility, Maximum Borrowing Capacity | $ 3,500 |
Debt and Financing Arrangemen_3
Debt and Financing Arrangements Long-Term Debt Instruments (Details) - USD ($) $ in Thousands | 1 Months Ended | 9 Months Ended | ||
Oct. 31, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020 | |
Debt Instrument [Line Items] | ||||
Long-Term Debt | $ 5,202,681 | $ 5,217,140 | ||
Long-term debt due within one year | 24,213 | 22,640 | ||
Proceeds from other financing obligations | 1,790 | $ 7,248 | ||
Other Long-Term Liabilities: Other | 73,648 | $ 42,921 | ||
Dalton Expansion Project | ||||
Debt Instrument [Line Items] | ||||
Long-Term Debt | 252,500 | |||
Long-term debt due within one year | 2,500 | |||
Atlantic Sunrise Project | ||||
Debt Instrument [Line Items] | ||||
Long-Term Debt | 812,400 | |||
Long-term debt due within one year | 21,700 | |||
Proceeds from other financing obligations | $ 1,800 | |||
Leidy South Project | ||||
Debt Instrument [Line Items] | ||||
Percent of construction costs capitalized | 100.00% | |||
Leidy South Project | Subsequent Event | ||||
Debt Instrument [Line Items] | ||||
Debt Instrument, Term | 20 years | |||
Debt, Total | $ 69,000 | |||
Other Long-Term Liabilities: Other | $ (69,000) |
ARO Trust (Details)
ARO Trust (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020 | Mar. 01, 2020 |
Debt Securities, Available-for-sale [Line Items] | |||
Debt and Equity Securities, Cost | $ 175.2 | $ 174.8 | |
Debt and Equity Securities, Fair Value | 247.8 | 235.5 | |
External trust [Member] | |||
Debt Securities, Available-for-sale [Line Items] | |||
Other Commitment, Due in Next Twelve Months | $ 16 | ||
Money Market Funds [Member] | |||
Debt Securities, Available-for-sale [Line Items] | |||
Debt and Equity Securities, Cost | 3.4 | 5.8 | |
Debt and Equity Securities, Fair Value | 3.4 | 5.8 | |
U.S. Equity Funds [Member] | |||
Debt Securities, Available-for-sale [Line Items] | |||
Debt and Equity Securities, Cost | 52.6 | 59.9 | |
Debt and Equity Securities, Fair Value | 111.6 | 108 | |
International Equity Funds [Member] | |||
Debt Securities, Available-for-sale [Line Items] | |||
Debt and Equity Securities, Cost | 31.7 | 34.2 | |
Debt and Equity Securities, Fair Value | 42.9 | 43.7 | |
Municipal Bond Funds [Member] | |||
Debt Securities, Available-for-sale [Line Items] | |||
Debt and Equity Securities, Cost | 87.5 | 74.9 | |
Debt and Equity Securities, Fair Value | $ 89.9 | $ 78 |
Fair Value Measurements (Detail
Fair Value Measurements (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] | ||
ARO Trust investments | $ 247.8 | $ 235.5 |
Fair Value, Inputs, Level 1 [Member] | ||
Additional Fair Value Elements [Abstract] | ||
Long-term debt, including current portion | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | ||
Additional Fair Value Elements [Abstract] | ||
Long-term debt, including current portion | (6,700.8) | (6,949) |
Fair Value, Inputs, Level 3 [Member] | ||
Additional Fair Value Elements [Abstract] | ||
Long-term debt, including current portion | 0 | 0 |
Reported Value Measurement [Member] | ||
Additional Fair Value Elements [Abstract] | ||
Long-term debt, including current portion | (5,226.9) | (5,239.8) |
Estimate of Fair Value Measurement [Member] | ||
Additional Fair Value Elements [Abstract] | ||
Long-term debt, including current portion | (6,700.8) | (6,949) |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] | ||
ARO Trust investments | 247.8 | 235.5 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] | ||
ARO Trust investments | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] | ||
ARO Trust investments | 0 | 0 |
Fair Value, Recurring [Member] | Reported Value Measurement [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] | ||
ARO Trust investments | 247.8 | 235.5 |
Fair Value, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ||
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] | ||
ARO Trust investments | $ 247.8 | $ 235.5 |
Transactions with Affiliates Re
Transactions with Affiliates Related Party Transations (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | |||
Oct. 31, 2021USD ($) | Sep. 30, 2021USD ($)employee | Sep. 30, 2020USD ($) | Sep. 30, 2021USD ($)employee | Sep. 30, 2020USD ($) | Dec. 31, 2020USD ($) | |
Related Party Transaction [Line Items] | ||||||
Advances to affiliate, net | $ 1,448,300 | $ 1,448,300 | $ 642,700 | |||
Related party transaction, rate | 0.01% | |||||
Entity number of employees | employee | 0 | 0 | ||||
Expenses, related party | $ 82,100 | $ 68,700 | $ 237,800 | $ 214,500 | ||
Equity distributions to parent | 287,928 | 785,000 | ||||
Cash contributions from Parent | 272,000 | 65,000 | ||||
Subsequent Event | ||||||
Related Party Transaction [Line Items] | ||||||
Cash contributions from Parent | $ 145,000 | |||||
Affiliated Entity [Member] | ||||||
Related Party Transaction [Line Items] | ||||||
Operating revenues, related party | 15,400 | 2,800 | 20,100 | 8,000 | ||
Cost of natural gas sales, related party | 1,400 | 800 | 5,500 | 3,800 | ||
Reduction to expenses | $ 1,900 | $ 1,600 | 5,400 | 3,800 | ||
Equity distributions to parent | $ 287,900 | $ 785,000 | ||||
Affiliated Entity [Member] | Subsequent Event | ||||||
Related Party Transaction [Line Items] | ||||||
Equity distributions to parent | $ 55,800 |