xbrli:pure iso4217:USD utr:dth C001031 2025-01-01 2025-09-30 C001031 ScheduleImportantChangesDuringTheQuarterYearAbstract 2025-01-01 2025-09-30 C001031 ScheduleStatementOfAccumulatedOtherComprehensiveIncomeAndHedgingActivitiesAbstract 2025-01-01 2025-09-30 C001031 ScheduleNotesToFinancialStatementsAbstract 2025-01-01 2025-09-30 C001031 2025-09-30 C001031 2024-12-31 C001031 2024-01-01 2024-09-30 C001031 2025-07-01 2025-09-30 C001031 2024-07-01 2024-09-30 C001031 ferc:ElectricUtilityMember 2025-01-01 2025-09-30 C001031 ferc:GasUtilityMember 2025-01-01 2025-09-30 C001031 ferc:GasUtilityMember 2024-01-01 2024-09-30 C001031 ferc:OtherUtilityMember 2025-01-01 2025-09-30 C001031 2023-12-31 C001031 TOTAL Credits to Retained Earnings (Account 439) (footnote details) 2025-01-01 2025-09-30 C001031 TOTAL Debits to Retained Earnings (Account 439) (footnote details) 2025-01-01 2025-09-30 C001031 TOTAL Debits to Retained Earnings (Account 439) (footnote details) 2024-01-01 2024-09-30 C001031 TOTAL Appropriations of Retained Earnings (Account 436) (footnote details) 2025-01-01 2025-09-30 C001031 TOTAL Dividends Declared-Preferred Stock (Account 437) (footnote details) 2025-01-01 2025-09-30 C001031 TOTAL Dividends Declared-Common Stock (Account 438) (footnote details) 2025-01-01 2025-09-30 C001031 2024-09-30 C001031 Other Changes (Explain) 2025-01-01 2025-09-30 C001031 Amortization of (Specify) (footnote details) 2025-01-01 2025-09-30 C001031 Other Adjustments to Cash Flows from Operating Activities 2025-01-01 2025-09-30 C001031 Other Adjustments to Cash Flows from Operating Activities 2024-01-01 2024-09-30 C001031 Other: Change in accounts payable-capital expenditures 2025-01-01 2025-09-30 C001031 Other: Change in accounts payable-capital expenditures 2024-01-01 2024-09-30 C001031 Other Adjustments to Cash Flows from Investment Activities: 2025-01-01 2025-09-30 C001031 Net Increase in Debt (Long Term Advances) 2025-01-01 2025-09-30 C001031 Other Retirements 2025-01-01 2025-09-30 C001031 Cash Distribution to Partner: Discovery Producer Services 2025-01-01 2025-09-30 C001031 ferc:GasUtilityMember 2025-09-30 C001031 Depreciation-Market Expansion 2025-01-01 2025-09-30 C001031 Deferred Taxes on Depreciation Regulatory Assets 2025-01-01 2025-09-30 C001031 Junction 2025-01-01 2025-09-30 C001031 Depreciation-Market Expansion 2025-06-30 C001031 Deferred Taxes on Depreciation Regulatory Assets 2025-06-30 C001031 Junction 2025-06-30 C001031 Junction 2025-07-01 2025-09-30 C001031 Depreciation-Market Expansion 2025-07-01 2025-09-30 C001031 Deferred Taxes on Depreciation Regulatory Assets 2025-07-01 2025-09-30 C001031 Depreciation-Market Expansion 2025-09-30 C001031 Deferred Taxes on Depreciation Regulatory Assets 2025-09-30 C001031 Junction 2025-09-30 C001031 2025-06-30 C001031 Depreciation Mainline 2025-01-01 2025-09-30 C001031 Depreciation Mainline 2025-06-30 C001031 Depreciation Mainline 2025-07-01 2025-09-30 C001031 Depreciation Mainline 2025-09-30 C001031 Junction FT-2 2025-01-01 2025-09-30 C001031 Market Expansion FT1 2025-01-01 2025-09-30 C001031 Market Expansion FT2 2025-01-01 2025-09-30 C001031 Market Expansion IT 2025-01-01 2025-09-30 C001031 Mainline FT1 2025-01-01 2025-09-30 C001031 Mainline FT2 (Firm) 2025-01-01 2025-09-30 C001031 Mainline FT2 (Negotiated) 2025-01-01 2025-09-30 C001031 Mainline IT 2025-01-01 2025-09-30 C001031 Cashout FT1, FT2 & IT 2025-01-01 2025-09-30 C001031 Junction FT-2 2025-07-01 2025-07-31 C001031 Market Expansion FT1 2025-07-01 2025-07-31 C001031 Market Expansion FT2 2025-07-01 2025-07-31 C001031 Market Expansion IT 2025-07-01 2025-07-31 C001031 Mainline FT1 2025-07-01 2025-07-31 C001031 Mainline FT2 (Firm) 2025-07-01 2025-07-31 C001031 Mainline FT2 (Negotiated) 2025-07-01 2025-07-31 C001031 Mainline IT 2025-07-01 2025-07-31 C001031 Junction FT-2 2025-08-01 2025-08-31 C001031 Market Expansion FT1 2025-08-01 2025-08-31 C001031 Market Expansion FT2 2025-08-01 2025-08-31 C001031 Market Expansion IT 2025-08-01 2025-08-31 C001031 Mainline FT1 2025-08-01 2025-08-31 C001031 Mainline FT2 (Firm) 2025-08-01 2025-08-31 C001031 Mainline FT2 (Negotiated) 2025-08-01 2025-08-31 C001031 Mainline IT 2025-08-01 2025-08-31 C001031 Junction FT-2 2025-09-01 2025-09-30 C001031 Market Expansion FT1 2025-09-01 2025-09-30 C001031 Market Expansion FT2 2025-09-01 2025-09-30 C001031 Market Expansion IT 2025-09-01 2025-09-30 C001031 Mainline FT1 2025-09-01 2025-09-30 C001031 Mainline FT2 (Firm) 2025-09-01 2025-09-30 C001031 Mainline FT2 (Negotiated) 2025-09-01 2025-09-30 C001031 Mainline IT 2025-09-01 2025-09-30 C001031 2025-07-01 2025-07-31 C001031 2025-08-01 2025-08-31 C001031 2025-09-01 2025-09-30 C001031 0 2025-01-01 2025-09-30 C001031 0 2025-07-01 2025-09-30 C001031 0 Other Receipts 2025-01-01 2025-09-30 C001031 ferc:DiscountedRateMember 2025-07-01 2025-07-31 C001031 ferc:NegotiatedRateMember 2025-07-01 2025-07-31 C001031 Linepack + systen balancing gas 2025-07-01 2025-07-31 C001031 ferc:DiscountedRateMember 2025-08-01 2025-08-31 C001031 ferc:NegotiatedRateMember 2025-08-01 2025-08-31 C001031 Linepack + system balancing gas 2025-08-01 2025-08-31 C001031 ferc:DiscountedRateMember 2025-09-01 2025-09-30 C001031 ferc:NegotiatedRateMember 2025-09-01 2025-09-30 C001031 Linepack + system balancing gas 2025-09-01 2025-09-30 C001031 ferc:GasUtilityMember ferc:ProductionAndGatheringPlantMember 2025-01-01 2025-09-30 C001031 ferc:GasUtilityMember ferc:TransmissionPlantMember 2025-01-01 2025-09-30 <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 Q3 One Williams Center, WRC2.A, Tulsa Ok 74172 Joleen Cox Accounting Supervisor One Williams Center, WRC2.A, Tulsa Ok 74172 539-777-1567 O 2025-11-30 Robert Biffle Vice President Robert Biffle 2025-11-30 N/A N/A N/A 397858131 398520461 24020 101901 397882151 398622362 229442897 224032970 168439254 174589392 168439254 174589392 13979168 4551614 4172297 4499362 0 347109 252415 18498574 9303391 46488790 44182938 1231904 1508039 11405103 13187000 0 59125797 58877977 246063625 242770760 160330136 160330135 -11164344 -10150955 149165792 150179180 38504135 36904962 38504135 36904962 1328858 2526314 2166358 1309101 2829313 1024000 1351919 2130 1178766 1169238 8855214 6030783 278692 278692 1707793 1825143 47035000 47035000 517000 517000 49538485 49655835 246063626 242770760 22786957 20576184 7921894 6984973 0 22786957 20576184 0 14124823 10235063 5444638 2955938 0 14124823 10235063 0 1183108 509429 687090 623171 0 1183108 509429 0 5968522 5900485 2098564 1885592 0 5968522 5900485 0 298367 357039 98691 111808 0 298367 357039 0 31697 0 0 0 31697 0 0 0 0 0 0 0 68056 68056 22685 22685 0 68056 68056 0 2511578 3058895 947298 827439 0 2511578 3058895 0 1599430 1086549 532600 291772 0 1599430 1086549 0 0 0 0 -17976 33177 1216 33117 0 -17976 33177 0 4032750 1346250 1344250 1346250 0 4032750 1346250 0 2561251 548250 751500 548250 0 2561251 548250 0 0 0 0 0 0 0 0 0 0 0 1599173 1653916 533022 531456 0 1599173 1653916 0 23783424 17614515 9063958 6426100 23783424 17614515 -996467 2961669 -1142064 558873 -996467 2961669 -2461 -13144 90 788 1591 374176 142205 272382 -870 361032 142295 273170 8220 710 1097 710 7833 1325 2364 1325 16053 2035 3461 2035 -16923 358997 138834 271135 -1013390 3320666 -1003230 830008 -1013390 3320666 -1003230 830008 -10150954 -11047998 TOTAL Credits to Retained Earnings (Account 439) (footnote details) TOTAL Debits to Retained Earnings (Account 439) (footnote details) 4 5 -1013390 -3320667 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) -11164344 -14368665 -14368665 Other Changes (Explain) 7866064 7943134 Amortization of (Specify) (footnote details) 1781897 831177 -327065 -171182 1900450 126182 2592705 2817465 -117350 -173374 Other Adjustments to Cash Flows from Operating Activities 860617 1617841 9012647 11019343 509074 4959233 Other: Change in accounts payable-capital expenditures -923981 -467399 -414907 4491834 9427554 8476592 Other Adjustments to Cash Flows from Investment Activities: -9012647 -12968426 Net Increase in Debt (Long Term Advances) Other Retirements Cash Distribution to Partner: Discovery Producer Services 1 -1949082 1921405 1 -27677 397858131 397858131 397858131 397858131 24020 397882151 229442897 168439254 229442897 229442897 229442897 229442897 Depreciation-Market Expansion Deferred Taxes on Depreciation Regulatory Assets 1 2 Junction 3 36836 643719 45037031 793889 1229 21457 35607 622262 45830920 45717586 793889 22686 Depreciation Mainline 1733751 -25958 1707793.00 1733751 -25958 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, FT2 & IT 13 1956125 5313398 40900 369993 6069854 10266618 427170 1254778 3979 14536 598 1756 271528 231907 2737 3235 455928 1151520 81162 154147 271528 231907 2737 3235 459907 1166056 81760 155903 2995865 757882 20000 1446101 2334920 11332796 404669 1488192 3375 16020 565 2084 376433 65168 1200 114178 261986 1242806 76888 172722 376433 65168 1200 114178 265361 1258826 77453 174806 3739527 599264 36113 1192808 2403118 11982516 407788 1260580 1551 16931 635 1764 453065 31775 2168 89515 299784 1283240 86112 139103 453065 31775 2168 89515 301335 1300171 86747 140867 25698836 20869 2352164 2373033 20780425 22044 2311381 2333425 21621714 20881 2384762 2405643 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4584418 165228 165228 4294358 153096 153096 4284180 150716 150716 7914 237 237 7103 212 212 6514 195 195 4592332 165465 165465 4301461 153308 153308 4290694 150911 150911 503777 105863 105863 636838 121530 121530 715972 121391 121391 503777 105863 105863 636838 121530 121530 715972 121391 121391 30794945 20869 2623492 2644361 25718724 22044 2586219 2608263 26628380 20881 2657064 2677945 38284395 12295231 145907131 47840044 Other Receipts 184191526 60135275 38284395 12295231 145770345 47580118 69786 234555 67000 25371 184191526 60135275 184191526 60135275 0 7598 3936 11534 7598 3936 11534 -99985 -51804 -151789 -99985 -51804 -151789 Linepack + systen balancing gas -107583 -55740 -163323 -107583 -55740 -163323 60006318 60006318 8581 1819 10400 8581 1819 10400 -152908 -126171 -26737 -152908 -126171 -26737 -305816 Linepack + system balancing gas -134752 -28556 -163308 -134752 -28556 -163308 3214 223 3437 3214 223 3437 65592 4550 70142 65592 4550 70142 62378 4327 66705 Linepack + system balancing gas 62378 4327 66705 52966705 26947962 344891426 202534480 397858131 229482442 1376400 38284395 20440128 315009415 970429 22786957 292694 5993 298687 1140431 -810462 329969 628656 299678 -23 95495 441435 9153 3907291 37429 4729623 9520081 2732 4992 963981 142084 414 65644 1179847 10699928 10699928 1500261 324712 236 611485 463752 99171 706775 168926 0 10927 54277 39297 3979347 3979347 440445 147485 587930 5528077 150882 0 5678959 5968522 298367 6266889 The Workiva Platform