CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues
Revenues	$ 5,996,721	$ 3,388,964	$ 11,441,330	$ 6,583,643
Cost of sales and fuel (exclusive of items shown separately below)	4,877,999	2,366,979	9,243,947	4,488,489
Operations and maintenance	230,687	212,319	445,093	419,477
Depreciation and amortization	157,757	156,921	311,615	314,041
General taxes	46,777	41,940	96,288	86,379
Other Operating Income (Expense), Net	(5,449)	(707)	(7,019)	(976)
Operating income	688,950	611,512	1,351,406	1,276,233
Equity in net earnings from investments	35,630	25,720	71,970	59,040
Allowance for equity funds used during construction	594	426	965	1,238
Other income (expense), net	(9,324)	(493)	(22,846)	(5,515)
Interest expense (net of capitalized interest of $13,519, $5,443, $25,239 and $10,538, respectively)	(170,751)	(184,957)	(342,805)	(370,480)
Income before income taxes	545,099	452,208	1,058,690	960,516
Income taxes	(130,721)	(110,069)	(253,141)	(232,201)
Net income	414,378	342,139	805,549	728,315
Less: Preferred stock dividends	275	275	550	550
Net income available to common shareholders	$ 414,103	$ 341,864	$ 804,999	$ 727,765
Basic earnings per common share (Note G)	$ 0.93	$ 0.77	$ 1.80	$ 1.63
Diluted earnings per common share (Note G)	$ 0.92	$ 0.77	$ 1.80	$ 1.63
Average shares (thousands)
Basic	447,451	446,337	447,288	446,116
Diluted	448,182	446,903	448,293	446,894
Commodity Sales
Revenues
Revenues	$ 5,650,803	$ 3,074,773	$ 10,756,014	$ 5,910,882
Services
Revenues
Revenues	$ 345,918	$ 314,191	$ 685,316	$ 672,761