Statement of Net Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating Revenues:
Revenues	$ 710,489	$ 727,783	$ 1,442,209	$ 1,433,678
Operating Costs and Expenses:
Cost of natural gas sales	21,550	55,899	45,897	77,671
Operation and maintenance	117,469	115,179	237,823	245,378
General and administrative	52,105	52,904	103,014	107,678
Depreciation and amortization	131,211	127,568	265,207	252,935
Taxes, other than income taxes	28,730	27,483	56,855	54,141
Regulatory credit resulting from tax rate changes	(7,688)	(7,688)	(15,376)	(15,376)
Other (income) expense, net	(1,737)	(4,553)	(9,291)	(3,478)
Total operating costs and expenses	341,640	366,792	684,129	718,949
Operating Income	368,849	360,991	758,080	714,729
Other (Income) and Other Expenses:
Interest expense	80,908	81,042	161,887	162,138
Interest income	(15,416)	(22,851)	(32,969)	(43,387)
Allowance for equity and borrowed funds used during construction (AFUDC)	(27,015)	(17,949)	(50,603)	(33,532)
Miscellaneous other (income) expense, net	1,407	1,127	2,965	1,097
Total other (income) and other expenses	39,884	41,369	81,280	86,316
Net Income	328,965	319,622	676,800	628,413
Natural gas transportation
Operating Revenues:
Revenues	634,130	618,398	1,285,742	1,242,138
Natural gas storage
Operating Revenues:
Revenues	48,478	45,128	96,557	92,804
Natural gas sales
Operating Revenues:
Revenues	21,550	55,899	45,897	77,671
Other
Operating Revenues:
Revenues	$ 6,331	$ 8,358	$ 14,013	$ 21,065