CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
OPERATING ACTIVITIES
Net income	$ 731	$ 852
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	374	400
Deferred income taxes	(15)	(17)
Provision for uncollectible accounts	29	28
Changes in current assets and liabilities:
Accounts receivable	(14)	(70)
Accounts payable	(12)	31
Accrued income and other taxes	(12)	3
Other current assets and liabilities, net	(39)	(48)
Changes in other noncurrent assets and liabilities, net	15	33
Changes in affiliate obligations, net	(27)	(30)
Other, net	(11)	4
Net cash provided by operating activities	1,019	1,186
INVESTING ACTIVITIES
Capital expenditures	(545)	(459)
Changes in advances to affiliates	(195)	(730)
Proceeds from sale of property, plant and equipment and other assets	5	2
Net cash used in investing activities	(735)	(1,187)
FINANCING ACTIVITIES
Payments of long-term debt	(215)	(2)
Changes in advances from affiliates	(61)	0
Net cash used in financing activities	(276)	(2)
Net increase (decrease) in cash, cash equivalents and restricted cash	8	(3)
Cash, cash equivalents and restricted cash at beginning of period	12	10
Cash, cash equivalents and restricted cash at end of period	20	7
Supplemental cash flow information:
Income taxes paid, net	(262)	(302)
Interest paid, including affiliate interest (net of capitalized interest of $38 and $22)	(33)	(53)
Repayment of long-term debt in exchange for advances from affiliates	215	0
Cash, cash equivalents and restricted cash:
Cash and Cash Equivalents, at Carrying Value	18	5
Restricted cash - noncurrent	2	2
Total	$ 20	$ 7