Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2018
Cash flows provided by (used in) operating activities
Net (loss) income	$ (88)	$ 2,895	$ (230)	$ (163)
Less: Net (loss) income from discontinued operations	4	135	(69)	28
Net (loss) income from continuing operations, net of taxes	(92)	2,760	(161)	(191)
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	93	43	191	98
Non-cash asset impairments	0	0	16	28
Non-cash reorganization items, net	0	(3,156)	0	0
Non-cash impact of Inventory step-up, Cash Flow	27	0	0	0
Deferred tax expense (benefit)	(9)	140	9	12
Gain (Loss) on Disposition of Business	0	0	0	(44)
Gain (Loss) on Disposition of Assets	4	3	9	6
Amortization of deferred financing fees	0	0	0	49
Foreign Currency Transaction Gain (Loss), Unrealized	(1)	(7)	(3)	2
Non-cash stock based compensation expense	8	0	17	0
Unrealized losses (gains) on pension and postretirement benefit plan liabilities	5	0	4	(13)
Financing fees included in net loss	0	136	0	0
Other non-cash adjustments	(2)	(1)	(1)	(3)
Net change in assets and liabilities:
Increase (Decrease) in Accounts Receivable	108	(73)	(3)	9
Increase (Decrease) in Inventories	15	(20)	35	(30)
Accounts payable	(15)	(15)	44	(3)
Income taxes payable	(3)	15	(9)	8
Increase (Decrease) in Other Operating Assets	25	3	(21)	3
Other liabilities, current and non-current	11	9	(11)	6
Net cash provided by (used in) operating activities from continuing operations	174	(163)	116	(63)
Net cash provided by (used in) operating activities from discontinued operations	50	(10)	15	40
Net cash provided by (used in) operating activities	224	(173)	131	(23)
Cash flows (used in) provided by investing activities
Capital expenditures	47	41	108	81
Proceeds from dispositions, net	0	0	0	49
Proceeds from sale of assets, net	0	1	3	1
Net cash used in investing activities from continuing operations	(47)	(40)	(105)	(31)
Net cash used in investing activities from discontinued operations	(11)	(2)	(21)	(9)
Net cash used in investing activities	(58)	(42)	(126)	(40)
Cash flows used in financing activities
Net short-term debt (repayments) borrowings	(24)	(4)	(7)	10
Borrowings of long-term debt	118	2,313	256	540
Repayments of Long-term Debt	130	2,261	293	468
Return of capital to parent (see Note 9)	0	0	(13)	0
Proceeds from rights offering	0	300	0	0
Payments of Financing Costs	2	136	0	1
Net Cash Provided by (Used in) Financing Activities	(38)	212	(57)	81
Effect of exchange rates on cash and cash equivalents, including restricted cash	1	0	2	(5)
(Decrease) increase in cash and cash equivalents, including restricted cash	129	(3)	(50)	13
Cash, cash equivalents and restricted cash at beginning of period	125	128	254	115
Cash, cash equivalents and restricted cash at end of period	254	125	204	128
Supplemental disclosures of cash flow information
Interest, net	22	71	103	318
Income taxes, net of cash refunds	10	10	16	17
Reorganization items, net	$ 0	$ 188	$ 0	$ 0