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Balance Sheet (Unaudited) - Transco - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Assets, Current [Abstract] |  |
Cash and cash equivalents | $ 203 | $ 63
Inventory, Net | 335 | 314
Other current assets and deferred charges | 398 | 256
Current assets | 3,123 | 3,244
Property, plant, and equipment | 65,278 | 62,010
Accumulated depreciation, depletion, and amortization | (20,868) | (20,014)
Property, plant, and equipment – net | 44,410 | 41,996
Other Assets, Noncurrent | 1,985 | 2,011
Total assets | 60,610 | 58,573
Liabilities, Current [Abstract] |  |
Accounts payable | 2,220 | 2,224
Other current liabilities | 1,518 | 1,639
Total current liabilities | 6,546 | 6,106
Contingent liabilities and commitments |  |
Members' Equity [Abstract] |  |
Retained Earnings (Accumulated Deficit) | (11,834) | (12,237)
Total liabilities and equity | 60,610 | 58,573
Transcontinental Gas Pipe Line Company, LLC [Member] |  |
Assets, Current [Abstract] |  |
Cash and cash equivalents | 0 | 0
Other Receivables, Net, Current | 42 | 23
Inventory, Net | 97 | 82
Regulatory Assets, Current | 146 | 126
Other current assets and deferred charges | 32 | 24
Current assets | 1,487 | 1,522
Property, plant, and equipment | 21,562 | 21,012
Accumulated depreciation, depletion, and amortization | (6,580) | (6,404)
Property, plant, and equipment – net | 14,982 | 14,608
Regulatory Assets, Noncurrent | 245 | 268
Other Assets, Noncurrent | 472 | 466
Total assets | 17,186 | 16,864
Liabilities, Current [Abstract] |  |
Accounts Payable, Trade, Current | 351 | 225
Regulatory Liability, Current | 106 | 93
Interest Payable, Current | 69 | 53
Customer Refund Liability, Current | 0 | 179
Accrued Liabilities and Other Liabilities | 0 | 75
Other current liabilities | 204 | 143
Asset Retirement Obligation, Current | 57 | 41
Long-Term Debt, Current Maturities | 247 | 246
Total current liabilities | 1,082 | 1,117
Long-Term Debt, Excluding Current Maturities | 5,643 | 5,642
Regulatory Liabilities, Noncurrent | 905 | 914
Asset Retirement Obligations, Noncurrent | 548 | 573
Other Liabilities, Noncurrent | 287 | 227
Contingent liabilities and commitments |  |
Members' Equity [Abstract] |  |
Members' Capital | 5,363 | 5,088
Retained Earnings (Accumulated Deficit) | 3,358 | 3,303
Total Members' Equity | 8,721 | 8,391
Total liabilities and equity | 17,186 | 16,864
Transcontinental Gas Pipe Line Company, LLC [Member] | Related Party |  |
Assets, Current [Abstract] |  |
Accounts and Financing Receivable, after Allowance for Credit Loss, Current | 900 | 954
Accounts Receivable, after Allowance for Credit Loss, Current | 10 | 7
Liabilities, Current [Abstract] |  |
Accounts payable | 48 | 62
Transcontinental Gas Pipe Line Company, LLC [Member] | Nonrelated Party |  |
Assets, Current [Abstract] |  |
Accounts Receivable, after Allowance for Credit Loss, Current | $ 260 | $ 306

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