Fresh Start Accounting Reorganization Adjustments - Cumulative Effect of Emergence (Details) - USD ($) $ in Millions		6 Months Ended
Jul. 01, 2019	Jun. 30, 2019
Reorganizations [Abstract]
Gain on settlement of LSTC	$ 1,293
Success and other fees recognized at emergence	(39)	$ 39
Net Gain on Reorganization	1,254
Tax impact on reorganization adjustments	(40)
Cancellation of Predecessor common stock	1
Cancellation of Predecessor additional paid-in capital	526
Cancellation of Predecessor treasury stock	(296)
Net impact to Accumulated Deficit	$ 1,445

Fresh-start Adjustment, Increase/Decrease Reorganization Tax Items

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Reorganization Items, Elimination of Predecessor Paid in Capital

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Reorganization Items, Gain/loss on LSTC

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Reorganization Items, Net Gain on Reorganization

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Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy.

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-Topic 852
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Amount of common stock at the balance sheet date before fresh-start adjustments.

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Amount of preferred and common stock held in treasury at the balance sheet date before fresh-start adjustments.

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