Reorganization and Chapter 11 Proceedings - Schedule of Reorganization Items Net (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2020
Reorganizations [Abstract]
Write-off of pre-petition unamortized debt issuance costs	$ 6	$ 6
Other	(2)	(2)
Total reorganization items, net	$ 4	$ 4

Amount of expense (income) related to reorganization items classified as other.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=116635682&loc=d3e55730-112764

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Amount of write-off of debt issuance costs and debt discounts related to prepetition debt obligations.

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Total amount of reorganization items.

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