Income Taxes Narrative (Details) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 13, 2019 USD ($)	Dec. 31, 2021 USD ($) country	Dec. 31, 2020 USD ($)
Income Tax Contingency [Line Items]
Deferred Tax Assets, Valuation Allowance			$ 1,426	$ 1,499
Income Tax Expense (Benefit)	$ 9	$ 135	86	85
Income (Loss) Before Income Taxes	(15)	3,819	(343)	(1,814)
Income Tax Expense (Benefit) Related To Fresh Start Accounting Adjustment		32
Income Tax Expense (Benefit) Related To Impairments		14
Asset Impairment Charges	0	750	0	1,053
Restructuring Charges	0	189	0	206
Goodwill, Impairment Loss	0	730	0	239
Long-lived Assets Impairment	0	20	0	814
Impairment of Long-Lived Assets Held-for-use		(20)
Inventory Charges	0	159	62	210
Gain (Loss) on Disposition of Business	0	112	0	0
Undistributed Earnings of Foreign Subsidiaries			1,400
Operating Loss Carryforward Before Adjustment For Expected Expiration			5,400
Tax Effect Of The Anticipated Expired Operating Loss Carryforward			273
Annual Limitation Of Operating Loss Carryforwards			23
Operating Loss Carryforwards Estimated To Expire Before Use			1,200
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 1	15	17	11
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued			$ 104	89
Number of Countries in which Entity Operates | country			75
Decrease in Unrecognized Tax Benefits is Reasonably Possible			$ 1
Income tax credits and adjustments				9
Gain on settlement of LSTC used in tax calculation [Line Items]		$ 4,300
Cancellation Of Debt Income			480
Operating Loss Carryforward Expected Utilization in the Future			713
Operating Loss Carryforwards			76	$ 77
UNITED STATES
Income Tax Contingency [Line Items]
Operating Loss Carryforward Before Adjustment For Expected Expiration			$ 2,000