Fresh Start Accounting - Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 13, 2019	Dec. 12, 2019
Current assets:
Cash and cash equivalents	$ 493	$ 641
Restricted cash	261	398
Accounts and notes receivable, net	1,274	1,274
Inventories	987	1,071
Other current assets	476	494
Total current assets	3,491	3,878
Property, plant, and equipment, net	2,127	1,838
Fresh-Start Adjustment, Increase (Decrease), Goodwill	239	0
Intangible assets, net	1,123	166
Other non-current assets	388	336
Total assets	7,368	6,218
Current liabilities:
Debtor in possession financing	0	1,528
Fresh-Start Adjustment, Increase (Decrease), Current Maturities of Long-term Debt	13	319
Accounts payable	663	667
Accrued liabilities	263	263
Accrued income taxes	214	214
Fresh-Start Adjustment, Increase (Decrease), Other Current Liabilities	557	618
Total current liabilities	1,710	3,609
Long-term debt	2,151	60
Other long-term liabilities	576	518
Total liabilities not subject to compromise	4,437	4,187
Liabilities subject to compromise	0	7,634
Stockholders’ equity:
Predecessor preferred stock		1
Common stock		0
Preconfirmation, Additional Paid-in Capital		6,733
Postconfirmation, Additional Paid-in Capital	2,897
Retained earnings (accumulated deficit)		(10,682)
Predecessor accumulated other comprehensive income (loss)		(1,697)
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity, Parent	2,897	(5,645)
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity, Noncontrolling Interests	34	42
Total stockholders’ equity	2,931	(5,603)
Total liabilities and stockholders’ equity	7,368	6,218
Reorganization Adjustments
Current assets:
Cash and cash equivalents	148	(148)
Restricted cash	(137)	(137)
Accounts and notes receivable, net		0
Inventories		0
Other current assets		(4)
Total current assets		(289)
Property, plant, and equipment, net		0
Fresh-Start Adjustment, Increase (Decrease), Goodwill		0
Intangible assets, net		0
Other non-current assets	25	25
Total assets		(264)
Current liabilities:
Debtor in possession financing		(1,528)
Fresh-Start Adjustment, Increase (Decrease), Current Maturities of Long-term Debt		(305)
Accounts payable		(4)
Fresh-Start Adjustment, Increase (Decrease), Other Current Liabilities	(22)	(22)
Total current liabilities		(1,859)
Long-term debt		2,097
Other long-term liabilities		0
Total liabilities not subject to compromise		238
Liabilities subject to compromise	7,634	(7,634)
Stockholders’ equity:
Predecessor preferred stock		(1)
Common stock		0
Capital in excess of par value		(35)
Postconfirmation, Additional Paid-in Capital	2,897
Retained earnings (accumulated deficit)	4,271	4,271
Predecessor accumulated other comprehensive income (loss)	$ 0
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity, Parent		7,132
Total stockholders’ equity		7,132
Total liabilities and stockholders’ equity		(264)
Fresh Start Adjustments
Current assets:
Cash and cash equivalents		0
Restricted cash		0
Accounts and notes receivable, net		0
Inventories		(84)
Other current assets		(14)
Total current assets		(98)
Property, plant, and equipment, net		289
Fresh-Start Adjustment, Increase (Decrease), Goodwill		239
Intangible assets, net		957
Other non-current assets		27
Total assets		1,414
Current liabilities:
Debtor in possession financing		0
Fresh-Start Adjustment, Increase (Decrease), Current Maturities of Long-term Debt		(1)
Accounts payable		0
Accrued income taxes		4
Fresh-Start Adjustment, Increase (Decrease), Other Current Liabilities		(39)
Total current liabilities		(40)
Long-term debt		(6)
Other long-term liabilities		58
Total liabilities not subject to compromise		12
Stockholders’ equity:
Predecessor preferred stock		0
Common stock		0
Capital in excess of par value		(6,698)
Retained earnings (accumulated deficit)		6,411
Predecessor accumulated other comprehensive income (loss)		1,697
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity, Parent		1,410
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity, Noncontrolling Interests		(8)
Total stockholders’ equity		1,402
Total liabilities and stockholders’ equity		$ 1,414