CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
OPERATING ACTIVITIES
Net income	$ 1,193	$ 1,479
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	607	640
Deferred income taxes	(21)	(4)
Provision for uncollectible accounts	51	42
Accrued interest on affiliate note	0	28
Changes in current assets and liabilities:
Accounts receivable	(9)	(15)
Accounts payable	11	(34)
Accrued income and other taxes	22	20
Other current assets and liabilities, net	(23)	(31)
Changes in other noncurrent assets and liabilities, net	33	11
Changes in affiliate obligations, net	(46)	(69)
Other, net	4	7
Net cash provided by operating activities	1,822	2,074
INVESTING ACTIVITIES
Capital expenditures	(773)	(613)
Changes in advances to affiliates	(1,057)	(231)
Proceeds from sale of property, plant and equipment and other assets	10	42
Net cash used in investing activities	(1,820)	(802)
FINANCING ACTIVITIES
Payment of note payable - affiliate	0	(1,215)
Payments of long-term debt	(2)	0
Changes in advances from affiliates	0	(55)
Net cash used in financing activities	(2)	(1,270)
Net increase in cash, cash equivalents and restricted cash	0	2
Cash, cash equivalents and restricted cash at beginning of period	10	4
Cash, cash equivalents and restricted cash at end of period	10	6
Supplemental cash flow information:
Income taxes paid, net	(423)	(497)
Interest paid, including affiliate interest (net of capitalized interest of $37 and $20)	(79)	(130)
Cash, cash equivalents and restricted cash:
Cash and cash equivalents	8	5
Restricted cash - noncurrent	2	1
Total	$ 10	$ 6