xbrli:pure iso4217:USD utr:dth C001031 2025-01-01 2025-06-30 C001031 ScheduleImportantChangesDuringTheQuarterYearAbstract 2025-01-01 2025-06-30 C001031 ScheduleStatementOfAccumulatedOtherComprehensiveIncomeAndHedgingActivitiesAbstract 2025-01-01 2025-06-30 C001031 ScheduleNotesToFinancialStatementsAbstract 2025-01-01 2025-06-30 C001031 2025-06-30 C001031 2024-12-31 C001031 2024-01-01 2024-06-30 C001031 2025-04-01 2025-06-30 C001031 2024-04-01 2024-06-30 C001031 ferc:ElectricUtilityMember 2025-01-01 2025-06-30 C001031 ferc:GasUtilityMember 2025-01-01 2025-06-30 C001031 ferc:GasUtilityMember 2024-01-01 2024-06-30 C001031 ferc:OtherUtilityMember 2025-01-01 2025-06-30 C001031 2023-12-31 C001031 TOTAL Credits to Retained Earnings (Account 439) (footnote details) 2025-01-01 2025-06-30 C001031 TOTAL Debits to Retained Earnings (Account 439) (footnote details) 2025-01-01 2025-06-30 C001031 TOTAL Debits to Retained Earnings (Account 439) (footnote details) 2024-01-01 2024-06-30 C001031 TOTAL Appropriations of Retained Earnings (Account 436) (footnote details) 2025-01-01 2025-06-30 C001031 TOTAL Dividends Declared-Preferred Stock (Account 437) (footnote details) 2025-01-01 2025-06-30 C001031 TOTAL Dividends Declared-Common Stock (Account 438) (footnote details) 2025-01-01 2025-06-30 C001031 2024-06-30 C001031 Other Changes (Explain) 2025-01-01 2025-06-30 C001031 Amortization of (Specify) (footnote details) 2025-01-01 2025-06-30 C001031 Other Adjustments to Cash Flows from Operating Activities 2025-01-01 2025-06-30 C001031 Other Adjustments to Cash Flows from Operating Activities 2024-01-01 2024-06-30 C001031 Other: Change in accounts payable-capital expenditures 2025-01-01 2025-06-30 C001031 Other: Change in accounts payable-capital expenditures 2024-01-01 2024-06-30 C001031 Other Adjustments to Cash Flows from Investment Activities: 2025-01-01 2025-06-30 C001031 Net Increase in Debt (Long Term Advances) 2025-01-01 2025-06-30 C001031 Other Retirements 2025-01-01 2025-06-30 C001031 Cash Distribution to Partner: Discovery Producer Services 2025-01-01 2025-06-30 C001031 ferc:GasUtilityMember 2025-06-30 C001031 Depreciation-Market Expansion 2025-01-01 2025-06-30 C001031 Deferred Taxes on Depreciation Regulatory Assets 2025-01-01 2025-06-30 C001031 Junction 2025-01-01 2025-06-30 C001031 Depreciation-Market Expansion 2025-03-31 C001031 Deferred Taxes on Depreciation Regulatory Assets 2025-03-31 C001031 Junction 2025-03-31 C001031 Junction 2025-04-01 2025-06-30 C001031 Depreciation-Market Expansion 2025-04-01 2025-06-30 C001031 Deferred Taxes on Depreciation Regulatory Assets 2025-04-01 2025-06-30 C001031 Depreciation-Market Expansion 2025-06-30 C001031 Deferred Taxes on Depreciation Regulatory Assets 2025-06-30 C001031 Junction 2025-06-30 C001031 2025-03-31 C001031 Depreciation Mainline 2025-01-01 2025-06-30 C001031 Depreciation Mainline 2025-03-31 C001031 Depreciation Mainline 2025-04-01 2025-06-30 C001031 Depreciation Mainline 2025-06-30 C001031 Junction FT-2 2025-01-01 2025-06-30 C001031 Market Expansion FT1 2025-01-01 2025-06-30 C001031 Market Expansion FT2 2025-01-01 2025-06-30 C001031 Market Expansion IT 2025-01-01 2025-06-30 C001031 Mainline FT1 2025-01-01 2025-06-30 C001031 Mainline FT2 (Firm) 2025-01-01 2025-06-30 C001031 Mainline FT2 (Negotiated) 2025-01-01 2025-06-30 C001031 Mainline IT 2025-01-01 2025-06-30 C001031 Cashout FT1 2025-01-01 2025-06-30 C001031 Cashout FT2 2025-01-01 2025-06-30 C001031 Cashout IT 2025-01-01 2025-06-30 C001031 Junction FT-2 2025-04-01 2025-04-30 C001031 Market Expansion FT1 2025-04-01 2025-04-30 C001031 Market Expansion FT2 2025-04-01 2025-04-30 C001031 Market Expansion IT 2025-04-01 2025-04-30 C001031 Mainline FT1 2025-04-01 2025-04-30 C001031 Mainline FT2 (Firm) 2025-04-01 2025-04-30 C001031 Mainline FT2 (Negotiated) 2025-04-01 2025-04-30 C001031 Mainline IT 2025-04-01 2025-04-30 C001031 Cashout FT1 2025-04-01 2025-04-30 C001031 Cashout FT2 2025-04-01 2025-04-30 C001031 Cashout IT 2025-04-01 2025-04-30 C001031 Junction FT-2 2025-05-01 2025-05-31 C001031 Market Expansion FT1 2025-05-01 2025-05-31 C001031 Market Expansion FT2 2025-05-01 2025-05-31 C001031 Market Expansion IT 2025-05-01 2025-05-31 C001031 Mainline FT1 2025-05-01 2025-05-31 C001031 Mainline FT2 (Firm) 2025-05-01 2025-05-31 C001031 Mainline FT2 (Negotiated) 2025-05-01 2025-05-31 C001031 Mainline IT 2025-05-01 2025-05-31 C001031 Junction FT-2 2025-06-01 2025-06-30 C001031 Market Expansion FT1 2025-06-01 2025-06-30 C001031 Market Expansion FT2 2025-06-01 2025-06-30 C001031 Market Expansion IT 2025-06-01 2025-06-30 C001031 Mainline FT1 2025-06-01 2025-06-30 C001031 Mainline FT2 (Firm) 2025-06-01 2025-06-30 C001031 Mainline FT2 (Negotiated) 2025-06-01 2025-06-30 C001031 Mainline IT 2025-06-01 2025-06-30 C001031 2025-04-01 2025-04-30 C001031 2025-05-01 2025-05-31 C001031 2025-06-01 2025-06-30 C001031 0 2025-01-01 2025-06-30 C001031 0 2025-04-01 2025-06-30 C001031 0 Other Receipts 2025-01-01 2025-06-30 C001031 ferc:DiscountedRateMember 2025-04-01 2025-04-30 C001031 ferc:NegotiatedRateMember 2025-04-01 2025-04-30 C001031 Linepack + systen balancing gas 2025-04-01 2025-04-30 C001031 ferc:DiscountedRateMember 2025-05-01 2025-05-31 C001031 ferc:NegotiatedRateMember 2025-05-01 2025-05-31 C001031 Linepack + system balancing gas 2025-05-01 2025-05-31 C001031 ferc:DiscountedRateMember 2025-06-01 2025-06-30 C001031 ferc:NegotiatedRateMember 2025-06-01 2025-06-30 C001031 Linepack + system balancing gas 2025-06-01 2025-06-30 C001031 ferc:GasUtilityMember ferc:ProductionAndGatheringPlantMember 2025-01-01 2025-06-30 C001031 ferc:GasUtilityMember ferc:TransmissionPlantMember 2025-01-01 2025-06-30 <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">1. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">2. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">3. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">4. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">5. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">6. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">7. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">8. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">9. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">10. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">11. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">12. None</span></div> <div style="margin-top:2pt;padding-right:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">13. None</span></div> C001031 2/3-Q Discovery Gas Transmission LLC 2025 Q2 One Williams Center, WRC2.A, Tulsa Ok 74172 Joleen Cox Accounting Supervisor One Williams Center, WRC2.A, Tulsa Ok 74172 539-777-1567 O 2025-08-19 Robert Biffle Vice President Robert Biffle 2025-08-19 N/A N/A N/A 398553616 398520461 23831 101901 398577447 398622362 228241188 224032970 170336259 174589392 170336259 174589392 10067795 4551614 3494429 4499362 185876 16996 252415 13765096 9303391 45717586 44182938 1444255 1508039 11999069 13187000 0 59160910 58877977 243262265 242770760 160330135 160330140 -10163149 -10150960 150166986 150179180 37963516 36904962 37963516 36904962 1690609 2526314 747852 1309101 1054313 1024000 906715 2130 1167831 1169238 5567320 6030783 278692 278692 1733751 1825143 47035000 47035000 517000 517000 49564443 49655835 243262265 242770760 14862997 13591211 7978867 7350274 0 14862997 13591211 0 8680188 6815821 5011730 3066948 0 8680188 6815821 0 500367 359801 376614 331113 0 500367 359801 0 4178215 3983300 2091676 1994920 0 4178215 3983300 0 197382 238231 98691 119115 0 197382 238231 0 31697 0 12679 0 0 31697 0 0 0 0 0 0 0 45370 45370 22685 22685 0 45370 45370 0 1862646 2051512 613490 1266982 0 1862646 2051512 0 1062477 811500 596469 430073 0 1062477 811500 0 0 0 0 2432 22118 1216 11059 0 2432 22118 0 2688500 897500 1344250 448750 0 2688500 897500 0 1503000 365500 751500 182750 0 1503000 365500 0 0 0 0 0 0 0 0 0 0 0 1058553 1122460 533022 565064 0 1058553 1122460 0 15047838 11910786 8711363 5552674 15047838 11910786 -184841 1680425 -732496 1797600 -184841 1680425 -2554 87 -649 14090 187793 112147 105646 67059 185239 112234 104997 81149 7123 1762 5470 3030 12593 4792 172646 112234 100205 81149 -12195 1792659 -632291 1878749 -12195 1792659 -632291 1878749 -10150954 -11048001 TOTAL Credits to Retained Earnings (Account 439) (footnote details) TOTAL Debits to Retained Earnings (Account 439) (footnote details) 4 5 -12195 1792659 TOTAL Appropriations of Retained Earnings (Account 436) (footnote details) TOTAL Dividends Declared-Preferred Stock (Account 437) (footnote details) TOTAL Dividends Declared-Common Stock (Account 438) (footnote details) -10163149 -9255342 -9255342 Other Changes (Explain) 5434152 5375687 Amortization of (Specify) (footnote details) 1187931 554118 -819057 762333 -631624 752114 1917119 1890558 -91392 -115583 Other Adjustments to Cash Flows from Operating Activities 897458 1362131 5686268 7068235 338248 2865777 Other: Change in accounts payable-capital expenditures -168161 -206078 170087 2659699 5516181 Other Adjustments to Cash Flows from Investment Activities: -5686268 -2659699 Net Increase in Debt (Long Term Advances) Other Retirements Cash Distribution to Partner: Discovery Producer Services 398553616 398553616 398553616 398553616 23831 398577447 228241188 170336259 228241188 228241188 228241188 228241188 Depreciation-Market Expansion Deferred Taxes on Depreciation Regulatory Assets 1 2 Junction 3 38064 665177 44245752 791279 1228 21457 36836 643719 45037031 44948993 791279 22685 Depreciation Mainline 1743149 -9398 1733751.00 1743149 -9398 Junction FT-2 Market Expansion FT1 4 5 Market Expansion FT2 6 Market Expansion IT 7 Mainline FT1 9 Mainline FT2 (Firm) 10 Mainline FT2 (Negotiated) 11 Mainline IT 12 Cashout FT1 13 Cashout FT2 14 Cashout IT 15 1228676 136180 73714 343158 547000 8969731 406413 850192 766 12749 569 1190 166830 303798 6306 3472 338108 978509 77218 93622 201264 780263 91586 166830 303798 6306 3472 338874 991258 77787 94812 201264 780263 91586 1208813 1315803 3336 477304 1949766 9540243 376715 968082 2730 13445 527 1355 172323 256030 364 4812 416001 1058108 71576 98103 172323 256030 364 4812 418731 1071553 72103 99458 1615132 808541 400 123753 1585702 8918058 453221 509579 2220 12581 635 713 228945 270915 25 2617 408631 1004732 86112 56321 228945 270915 25 2617 410851 1017313 86747 57034 12555064 15274 3040976 3056250 15840062 18057 2077317 2095374 14014386 16149 2058298 2074447 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4228962 146806 146806 4426336 159497 159497 3728921 133185 133185 8076 237 237 8477 259 259 5208 148 148 4237038 147043 147043 4434813 159756 159756 3734129 133333 133333 109739 716240 716240 101912 658695 658695 95254 526110 526110 109739 716240 716240 101912 658695 658695 95254 526110 526110 16901841 15274 3904259 3919533 20376787 18057 2895768 2913825 17843769 16149 2717741 2733890 25175914 12405980 92333716 42409512 Other Receipts 117509630 54815492 25175914 12405980 91987747 42098883 304340 299569 41629 11060 117509630 54815492 117509630 54815492 0 799 46 845 799 46 845 103960 5983 109943 103960 5983 109943 101905 7193 109098 Linepack + systen balancing gas 101905 7193 109098 73744217 73744217 4832 1255 6087 4832 1255 6087 34900 9063 43963 34900 9063 43963 24227 13649 37876 Linepack + system balancing gas 24227 13649 37876 3423 705 4128 3423 705 4128 120778 24885 145663 120778 24885 145663 112471 29064 141535 Linepack + system balancing gas 112471 29064 141535 52966705 27500244 345586911 200740944 398553616 228241188 906718 25175914 13334640 92333716 621639 14862997 161850 5993 167843 -601119 317803 -283316 -115473 191237 -23 57953 296330 6097 2380960 30240 3202473 6165267 1824 3467 319215 162602 411 8679 496198 6661465 6661465 970504 210688 1318 415471 324149 80662 460671 109888 228 37668 25950 2634561 2634561 293630 98324 391954 3884585 99058 0 3983643 4178215 197382 4375597 The Workiva Platform