Condensed Consolidated Balance Sheet (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current Assets:
Cash	$ 0	$ 0
Receivables:
Affiliates	1,043	1,018
Advances to affiliate	0	33,034
Trade and other	227,437	201,198
Transportation and exchange gas receivables	4,256	4,515
Inventories	63,260	63,205
Regulatory assets	78,617	95,770
Other	12,745	12,574
Total current assets	387,358	411,314
Investments, at cost plus equity in undistributed earnings	36,776	26,520
Property, Plant and Equipment:
Natural gas transmission plant	16,601,011	15,908,878
Less-Accumulated depreciation and amortization	4,386,364	4,147,729
Total property, plant and equipment, net	12,214,647	11,761,149
Other Assets:
Regulatory assets	295,733	289,479
Right-of-use assets	90,023	0
Other	194,305	167,490
Total other assets	580,061	456,969
Total Assets	13,218,842	12,655,952
Payables:
Affiliates	54,508	50,727
Advances from affiliates	169,908	0
Trade and other	207,871	226,911
Transportation and exchange gas payables	2,456	5,973
Reserve for rate refunds	130,752	0
Regulatory liabilities	56,871	5,097
Accrued liabilities	197,569	218,384
Long-term debt due within one year	18,082	15,419
Total current liabilities	838,017	522,511
Long-Term Debt	4,020,631	3,998,988
Other Long-Term Liabilities:
Asset retirement obligations	391,565	348,609
Regulatory liabilities	967,398	1,026,892
Deferred revenue	218,241	226,164
Lease liability	85,969	0
Other	12,230	4,188
Total other long-term liabilities	1,675,403	1,605,853
Contingent Liabilities and Commitments (Note 4)
Members' Equity
Member's capital	4,428,499	4,428,499
Retained earnings	2,256,450	2,099,567
Accumulated other comprehensive income (loss)	(158)	534
Total member's equity	6,684,791	6,528,600
Total liabilities and member's equity	$ 13,218,842	$ 12,655,952