CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING ACTIVITIES
Net income (loss)	$ 1,487	$ (831)	$ 1,919
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	753	823	860
Goodwill impairment	0	2,405	0
Deferred income taxes	37	22	20
Provision for uncollectible accounts	45	66	60
Accrued interest on affiliate note	0	0	28
Changes in current assets and liabilities:
Accounts receivable	(11)	20	(68)
Accounts payable	14	14	(29)
Accrued income and other taxes	10	7	(5)
Other current assets and liabilities, net	(49)	(97)	(26)
Changes in other noncurrent assets and liabilities, net	(8)	17	(28)
Changes in affiliate obligations, net	(55)	(62)	(90)
Other, net	(29)	5	(15)
Net cash provided by operating activities	2,194	2,389	2,626
INVESTING ACTIVITIES
Capital expenditures	(1,047)	(1,062)	(849)
Changes in advances to affiliates	(902)		(576)
Changes in advances to affiliates		569
Proceeds from sale of property, plant and equipment and other assets	58	27	76
Net cash used in investing activities	(1,891)	(466)	(1,349)
FINANCING ACTIVITIES
Payment of note payable - affiliate	0	0	(1,215)
Payments of long-term debt	(226)	(2)	(1)
Dividends paid	0	(1,980)	0
Changes in advances from affiliates	(61)	61	(55)
Net cash used in financing activities	(287)	(1,921)	(1,271)
Net increase in cash, cash equivalents and restricted cash	16	2	6
Cash, cash equivalents and restricted cash at beginning of period	12	10	4
Cash, cash equivalents and restricted cash at end of period	28	12	10
Supplemental cash flow information:
Income taxes paid, net	(497)	(509)	(673)
Interest paid, including affiliate interest (net of capitalized interest of $75, $54 and $29)	(63)	(97)	(113)
Supplemental noncash information of financing activities:
Dividend to parent in exchange for advances to affiliates	0	(1,980)	0
Cash, cash equivalents and restricted cash:
Cash and cash equivalents	26	10	8
Restricted cash - noncurrent	2	2	2
Total	$ 28	$ 12	$ 10