Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
OPERATING ACTIVITIES
Net (loss) income	$ (3,585)	$ 62
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	390	431
Impairment of goodwill	3,708	0
Deferred income taxes	79	104
Changes in current assets and liabilities:
Accounts receivable	4	21
Accounts payable	(48)	(18)
Other assets and liabilities, net	(161)	(50)
Other assets and liabilities, affiliate	119	37
Changes in other noncurrent assets and liabilities, net	(23)	(25)
Other, net	0	9
Net cash provided by operating activities	483	571
INVESTING ACTIVITIES
Capital expenditures	(285)	(252)
Proceeds from sale of property, plant and equipment and other assets	0	1
Deposits received on assets held for sale	0	34
Net cash used in investing activities	(285)	(217)
FINANCING ACTIVITIES
Distributions	(225)	(390)
Other	(1)	(2)
Net cash used in financing activities	(226)	(392)
Net decrease in cash, cash equivalents and restricted cash	(28)	(38)
Cash, cash equivalents and restricted cash at beginning of period	272	331
Cash, cash equivalents and restricted cash at end of period	244	293
Supplemental cash flow information
Income taxes paid, net	7	8
Interest paid	$ 139	$ 129