Balance Sheet (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current Assets:
Cash	$ 0	$ 0
Receivables:
Other	7,925	2,795
Transportation and exchange gas receivables	10,059	9,256
Inventories:
Materials and supplies, at average cost	46,721	43,738
Gas available for customer nomination, at average cost	30,273	48,289
Gas in storage, at original cost	756	1,079
Regulatory assets	101,225	123,903
Other	16,654	32,838
Total current assets	2,004,924	2,348,542
Property, plant and equipment	19,028,045	18,239,745
Less-Accumulated depreciation and amortization	5,881,982	5,552,377
Total property, plant and equipment, net	13,146,063	12,687,368
Other Assets:
Regulatory assets	312,301	298,793
Right-of-use assets	54,847	59,235
Other	275,831	265,651
Total other assets	642,979	623,679
Total assets	15,793,966	15,659,589
Payables:
Trade	298,651	184,906
Cash overdrafts	10,128	13,589
Transportation and exchange gas payables	3,238	5,140
Accrued liabilities:
Interest	50,176	76,255
Asset retirement obligations	55,470	27,484
Regulatory liabilities	47,873	57,047
Property and other taxes	50,313	30,526
Customer deposits	28,876	28,498
Customer advances	21,136	11,535
Other	31,234	20,462
Long-term debt due within one year	30,530	28,532
Total current liabilities	671,640	538,277
Long-Term Debt	5,237,114	5,251,799
Other Long-Term Liabilities:
Regulatory liabilities	949,570	963,969
Asset retirement obligations	561,296	535,479
Contract liabilities	175,976	183,898
Lease liability	57,860	63,074
Other	12,593	12,699
Total other long-term liabilities	1,757,295	1,759,119
Contingent Liabilities and Commitments (Note 3)
Member’s Equity:
Member’s capital	5,088,499	5,088,499
Retained earnings	3,039,418	3,021,895
Total member’s equity	8,127,917	8,110,394
Total liabilities and member’s equity	15,793,966	15,659,589
Related Party [Member]
Receivables:
Advances to affiliate	1,564,365	1,813,480
Trade	6,095	8,205
Affiliates	6,095	8,205
Payables:
Affiliates	44,015	54,303
Nonrelated Party [Member]
Receivables:
Trade	220,851	264,959
Affiliates	$ 220,851	$ 264,959