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LEASES - Supplemental Cash Flows (Details) - USD ($) $ in Millions | 2 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2020 | Oct. 31, 2020 | Dec. 31, 2019
Leases [Abstract] |  |  |
Operating cash outflows from operating leases | $ 2 | $ 9 | $ 14
Investing cash outflows from operating leases | 0 | 14 | 40
Financing cash outflows from finance leases | 0 | 1 | 0
ROU assets obtained in exchange for new operating lease liabilities | 0 | 0 | 122
ROU assets obtained in exchange for new finance lease liabilities | 0 | 0 | 2
Impairment charges related to ROU assets | $ 0 | $ 2 | $ 3
Weighted-average remaining lease term (in years) | 6 years 9 months 21 days |  | 4 years 9 months
Weighted-average discount rate | 4.50% |  | 12.20%
Weighted-average remaining lease term (in years) | 1 year 3 months 29 days |  | 2 years 3 months 29 days
Weighted-average discount rate | 4.00% |  | 8.50%

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- Definition Amount of cash outflow for principal payment on finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121593497&loc=SL77918431-209957 + Details
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