CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
OPERATING ACTIVITIES
Net income	$ 97	$ 147	$ 211	$ 298
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	405	436	801	873
Deferred income taxes			54	92
Changes in current assets and liabilities:
Accounts receivable			33	(26)
Accounts payable			(29)	(9)
Other assets and liabilities, net			(113)	(74)
Other assets and liabilities, affiliate			85	(499)
Changes in other noncurrent assets and liabilities, net			64	13
Other, net			78	(35)
Net cash provided by operating activities			1,184	633
INVESTING ACTIVITIES
Capital expenditures			(554)	(591)
Proceeds from sale of property, plant and equipment and other assets			1	52
Net cash used in investing activities			(553)	(539)
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt			0	891
Distributions			(553)	(25)
Payments of long-term debt			(64)	(925)
Other			0	(1)
Net cash used in financing activities			(617)	(60)
Net increase in cash, cash equivalents and restricted cash			14	34
Cash, cash equivalents and restricted cash at beginning of period			191	205
Cash, cash equivalents and restricted cash at end of period	205	239	205	239
Supplemental cash flow information:
Income taxes paid, net			(23)	(16)
Interest paid (net of capitalized interest of $8 and $8)			(182)	(190)
Cash, cash equivalents and restricted cash:
Cash and cash equivalents	154	233	154	233
Cash and cash equivalents included in assets held for sale	48	0	48	0
Restricted cash included in Other current assets	1	2	1	2
Restricted cash included in Other, net noncurrent assets	2	4	2	4
Total	$ 205	$ 239	$ 205	$ 239