CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 520,512	$ 604,054
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including nuclear fuel	612,958	532,341
Deferred fuel and purchased power	(228,483)	(224,541)
Deferred fuel and purchased power amortization	171,607	25,195
Allowance for equity funds used during construction	(30,966)	(30,549)
Deferred income taxes	43,440	104,128
Deferred investment tax credit	(7,152)	(8,333)
Stock compensation	12,824	16,708
Changes in current assets and liabilities:
Customer and other receivables	(213,181)	(110,584)
Accrued unbilled revenues	(87,043)	(58,334)
Materials, supplies and fossil fuel	(72,623)	(46,744)
Income tax receivable	7,514	6,792
Other current assets	54,272	(19,129)
Accounts payable	137,433	19,005
Accrued taxes	117,044	93,953
Other current liabilities	12,575	(26,491)
Change in margin and collateral accounts - assets	8,832	(77)
Change in other long-term assets	208,599	(284,291)
Change in operating lease assets	98,081	106,802
Change in other long-term liabilities	(235,986)	62,012
Change in operating lease liabilities	(98,343)	(101,404)
Net cash provided by operating activities	1,031,914	660,513
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(1,276,861)	(1,006,431)
Contributions in aid of construction	103,366	67,278
Allowance for borrowed funds used during construction	(18,381)	(15,466)
Proceeds from nuclear decommissioning trusts sales and other special use funds	911,003	797,179
Investment in nuclear decommissioning trusts and other special use funds	(929,965)	(815,193)
Other	(11,057)	10,321
Net cash used for investing activities	(1,221,895)	(962,312)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	455,628	596,999
Short-term borrowing and (repayments) - net	174,820	(25,000)
Short-term debt repayments under revolving credit facility	0	(19,000)
Dividends paid on common stock	(282,838)	(275,329)
Repayment of long-term debt	(150,000)	0
Common stock equity issuances and (purchases) -net	62	477
Distributions to noncontrolling interests	(10,628)	(10,628)
Net cash provided by financing activities	187,044	267,519
NET DECREASE IN CASH AND CASH EQUIVALENTS	(2,937)	(34,280)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	9,969	59,968
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 7,032	$ 25,688