CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	2 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2017	Oct. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
OPERATING ACTIVITIES
Net (loss) income	$ (141)	$ 425	$ (3,201)	$ 341
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	282	1,018	1,613	1,704
Goodwill impairment	0	0	3,708	0
Deferred income taxes	270	217	219	175
Changes in current assets and liabilities:
Accounts receivable	(1)	(16)	21	46
Accounts payable	35	(102)	(134)	(37)
Other current assets and liabilities	(100)	70	(6)	4
Other current assets and liabilities, affiliates	(17)	0	423	216
Changes in other noncurrent assets and liabilities, net	(53)	154	120	(22)
Other, net	33	148	(80)	(30)
Net cash provided by operating activities	308	1,914	2,683	2,397
INVESTING ACTIVITIES
Capital expenditures	(207)	(1,119)	(1,341)	(1,038)
Purchase of marketable securities	0	(1,127)	0	0
Maturity of marketable securities	0	1,127	0	0
Proceeds from sale of property, plant and equipment and other assets	0	1	28	134
Note receivable - affiliate			235
Note receivable - affiliate	(1,825)	0		0
Net cash used in investing activities	(2,032)	(1,118)	(1,078)	(904)
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt	0	4,569	2,479	0
Payments of long-term debt	(1)	(4,917)	(2,906)	(7)
Distributions	(250)	0	(1,084)	(1,545)
Other	(2)	3	(28)	0
Net cash used in financing activities	(253)	(345)	(1,539)	(1,552)
Net increase (decrease) in cash, cash equivalents, restricted cash and securities	(1,977)	451	66	(59)
Cash, cash equivalents, restricted cash and securities at beginning of period	2,308	1,857	272	331
Cash, cash equivalents, restricted cash and securities at end of period	331	2,308	338	272
Supplemental cash flow information:
Income taxes paid, net	(10)	(49)	(23)	(33)
Interest paid (net of capitalized interest of $15, $1, — and —)	56	468	531	542
Cash, cash equivalents, restricted cash and securities:
Total	$ 331	$ 2,308	$ 272	$ 331