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Leases - ROU Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets and Liabilities, Lessee [Abstract] |  |
Finance, ROU assets | $ 9 | $ 17
Finance, current lease liabilities | 9 | 9
Finance, long-term lease liabilities | 0 | 9
Finance, present value of lease liabilities | 9 | 18
Less amounts reclassified to liabilities subject to compromise | (9) | 0
Finance Lease, Liability, Net | 0 | 18
Operating, ROU assets | $ 29 | $ 22
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilitiesCurrent | us-gaap:OtherLiabilitiesCurrent
Operating, current lease liabilities | $ 27 | $ 9
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:OperatingLeaseLiabilityNoncurrent | us-gaap:OperatingLeaseLiabilityNoncurrent
Operating, long-term lease liabilities | $ 2 | $ 16
Operating Lease, Liability, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilities | us-gaap:OtherLiabilities
Operating, present value of lease liabilities | $ 29 | $ 25
Less amounts reclassified to liabilities subject to compromise | (5) | 0
Operating Lease, Liability, Net | $ 24 | $ 25

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- Definition Liabilities Subject to Compromise, Finance Lease + References No definition available. + Details
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- Definition Liabilities Subject to Compromise, Operating Lease + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from 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 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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