CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities
Net income	$ 706	$ 708
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	1,202	1,210
Nuclear fuel amortization	53	61
Deferred income taxes	(192)	(135)
Allowance for equity funds used during construction	(37)	(33)
Earnings from equity method investments	(20)	(26)
Dividends from equity method investments	18	20
Provision for bad debts	36	30
Share-based compensation expense	12	14
Changes in operating assets and liabilities:
Accounts receivable	225	(97)
Accrued unbilled revenues	364	70
Inventories	100	(44)
Other current assets	39	26
Accounts payable	(443)	137
Net regulatory assets and liabilities	569	213
Other current liabilities	(74)	(134)
Pension and other employee benefit obligations	(37)	(32)
Other, net	(66)	0
Net cash provided by operating activities	2,455	1,988
Investing activities
Capital/construction expenditures	(2,599)	(2,040)
Purchase of investment securities	(416)	(787)
Proceeds from the sale of investment securities	399	769
Other, net	(23)	3
Net cash used in investing activities	(2,639)	(2,055)
Financing activities
Repayments of short-term borrowings, net	(269)	(869)
Proceeds from issuances of long-term debt	1,741	2,066
Repayments of long-term debt, including reacquisition premiums	(650)	(600)
Proceeds from issuance of common stock	75	151
Dividends paid	(536)	(497)
Other, net	(13)	(15)
Net cash provided by financing activities	348	236
Net change in cash, cash equivalents and restricted cash	164	169
Cash, cash equivalents and restricted cash at beginning of period	111	166
Cash, cash equivalents and restricted cash at end of period	275	335
Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)	(461)	(425)
Cash paid for income taxes, net	(49)	(9)
Supplemental disclosure of non-cash investing and financing transactions:
Accrued property, plant and equipment additions	497	401
Inventory transfers to property, plant and equipment	78	30
Operating lease right-of-use assets	50	15
Allowance for equity funds used during construction	37	33
Issuance of common stock for reinvested dividends and/or equity awards	$ 32	$ 27