Balance Sheet (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current Assets:
Cash	$ 0	$ 0
Receivables:
Other	3,929	2,795
Transportation and exchange gas receivables	21,728	9,256
Inventories:
Materials and supplies, at average cost	45,227	43,738
Gas available for customer nomination, at average cost	37,923	48,289
Gas in storage, at original cost	780	1,079
Regulatory assets	108,229	123,903
Other	8,693	32,838
Total current assets	2,201,098	2,348,542
Property, plant and equipment	18,630,844	18,239,745
Less-Accumulated depreciation and amortization	5,753,977	5,552,377
Total property, plant and equipment, net	12,876,867	12,687,368
Other Assets:
Regulatory assets	288,736	298,793
Right-of-use assets	56,407	59,235
Other	282,679	265,651
Total other assets	627,822	623,679
Total assets	15,705,787	15,659,589
Payables:
Trade	200,736	184,906
Cash overdrafts	10,598	13,589
Transportation and exchange gas payables	13,541	5,140
Accrued liabilities:
Interest	76,150	76,255
Asset retirement obligations	34,622	27,484
Regulatory liabilities	53,650	57,047
Property and other taxes	49,153	30,526
Customer deposits	30,916	28,498
Customer advances	23,376	11,535
Other	25,365	20,462
Long-term debt due within one year	29,849	28,532
Total current liabilities	591,340	538,277
Long-Term Debt	5,242,688	5,251,799
Other Long-Term Liabilities:
Regulatory liabilities	964,742	963,969
Asset retirement obligations	537,482	535,479
Contract liabilities	178,619	183,898
Lease liability	59,376	63,074
Other	12,733	12,699
Total other long-term liabilities	1,752,952	1,759,119
Contingent Liabilities and Commitments (Note 3)
Member’s Equity:
Member’s capital	5,088,499	5,088,499
Retained earnings	3,030,308	3,021,895
Total member’s equity	8,118,807	8,110,394
Total liabilities and member’s equity	15,705,787	15,659,589
Related Party [Member]
Receivables:
Advances to affiliate	1,739,507	1,813,480
Trade	5,979	8,205
Affiliates	5,979	8,205
Payables:
Affiliates	43,384	54,303
Nonrelated Party [Member]
Receivables:
Trade	229,103	264,959
Affiliates	$ 229,103	$ 264,959