Statement of Net Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating Revenues:
Revenues	$ 709,724	$ 631,239	$ 1,396,192	$ 1,275,016
Operating Costs and Expenses:
Cost of natural gas sales	43,371	16,003	59,016	30,227
Operation and maintenance	129,019	95,831	240,315	191,915
Administrative and general	57,090	46,424	108,639	97,177
Depreciation and amortization	130,670	117,759	263,232	235,556
Taxes — other than income taxes	25,727	24,418	52,841	48,946
Regulatory credit resulting from tax rate changes	(7,688)	(7,688)	(15,376)	(15,376)
Other (income) expense, net	(7,360)	3,254	(18,248)	4,677
Total operating costs and expenses	370,829	296,001	690,419	593,122
Operating Income	338,895	335,238	705,773	681,894
Other (Income) and Other Expenses:
Interest expense	82,184	80,260	164,621	160,435
Interest income	(4,542)	(1,184)	(5,644)	(2,071)
Allowance for equity and borrowed funds used during construction (AFUDC)	(5,793)	(5,724)	(10,650)	(9,721)
Miscellaneous other (income) expense, net	1,459	1,085	3,458	2,024
Total other (income) and other expenses	73,308	74,437	151,785	150,667
Net Income	265,587	260,801	553,988	531,227
Natural gas sales
Operating Revenues:
Revenues	43,371	16,003	59,016	30,227
Natural gas transportation
Operating Revenues:
Revenues	614,043	571,245	1,235,580	1,153,802
Natural gas storage
Operating Revenues:
Revenues	49,159	41,357	93,317	83,859
Other
Operating Revenues:
Revenues	$ 3,151	$ 2,634	$ 8,279	$ 7,128