Statement of Net Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating Revenues:
Revenues	$ 727,783	$ 709,724	$ 1,433,678	$ 1,396,192
Operating Costs and Expenses:
Cost of natural gas sales	55,899	43,371	77,671	59,016
Operation and maintenance	115,179	129,019	245,378	240,315
General and administrative	52,904	57,090	107,678	108,639
Depreciation and amortization	127,568	130,670	252,935	263,232
Taxes — other than income taxes	27,483	25,727	54,141	52,841
Regulatory credit resulting from tax rate changes	(7,688)	(7,688)	(15,376)	(15,376)
Other (income) expense, net	(4,553)	(7,360)	(3,478)	(18,248)
Total operating costs and expenses	366,792	370,829	718,949	690,419
Operating Income	360,991	338,895	714,729	705,773
Other (Income) and Other Expenses:
Interest expense	81,042	82,184	162,138	164,621
Interest income	(22,851)	(4,542)	(43,387)	(5,644)
Allowance for equity and borrowed funds used during construction (AFUDC)	(17,949)	(5,793)	(33,532)	(10,650)
Miscellaneous other (income) expense, net	1,127	1,459	1,097	3,458
Total other (income) and other expenses	41,369	73,308	86,316	151,785
Net Income	319,622	265,587	628,413	553,988
Natural gas transportation
Operating Revenues:
Revenues	618,398	614,043	1,242,138	1,235,580
Natural gas storage
Operating Revenues:
Revenues	45,128	49,159	92,804	93,317
Natural gas sales
Operating Revenues:
Revenues	55,899	43,371	77,671	59,016
Other
Operating Revenues:
Revenues	$ 8,358	$ 3,151	$ 21,065	$ 8,279