Condensed Balance Sheet (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash	$ 0	$ 0
Receivables:
Affiliates	5,575	6,978
Advances to affiliate	1,941,659	1,669,368
Trade	216,736	234,680
Other (less allowance of $6,229 and $6,222 in 2022 and 2021, respectively)	10,685	12,977
Transportation and exchange gas receivables	3,623	7,685
Inventories	58,147	54,437
Regulatory assets	132,401	114,351
Other	14,179	17,058
Total current assets	2,383,005	2,117,534
Property, Plant and Equipment:
Natural gas transmission plant	17,750,482	17,713,050
Less-Accumulated depreciation and amortization	5,293,340	5,227,128
Total property, plant and equipment, net	12,457,142	12,485,922
Other Assets:
Regulatory assets	275,356	253,081
Right-of-use assets	65,985	68,817
Other	280,336	292,957
Total other assets	621,677	614,855
Total assets	15,461,824	15,218,311
Payables:
Affiliates	57,882	69,128
Trade and other	113,094	184,405
Transportation and exchange gas payables	6,112	10,125
Regulatory liabilities	57,781	57,369
Accrued liabilities	184,153	223,013
Long-term debt due within one year	26,182	25,594
Total current liabilities	445,204	569,634
Long-Term Debt	5,265,835	5,269,024
Other Long-Term Liabilities:
Asset retirement obligations	470,884	459,969
Regulatory liabilities	937,771	932,101
Contract liabilities	191,826	194,464
Lease liability	66,985	68,582
Other	4,210	4,281
Total other long-term liabilities	1,671,676	1,659,397
Contingent Liabilities and Commitments (Note 3)
Member’s Equity:
Member's capital	5,088,499	4,960,499
Retained earnings	2,990,610	2,759,757
Total member's equity	8,079,109	7,720,256
Total liabilities and member's equity	$ 15,461,824	$ 15,218,311