INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Components of Deferred Tax Assets [Abstract] | ||||
| Deferred Tax Assets, Operating Loss Carryforwards | $ 1,236 | $ 795 | ||
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions | 228 | 114 | ||
| Deferred Tax Assets, Property, Plant and Equipment | 0 | 1 | ||
| Deferred Tax Assets, State Taxes | 132 | 71 | ||
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other | 190 | 70 | ||
| Deferred Tax Assets, Gross | 1,786 | 1,051 | ||
| Deferred Tax Assets, Valuation Allowance | (836) | (441) | $ (1,287) | $ (1,983) |
| Deferred Tax Assets, Net of Valuation Allowance | 950 | 610 | ||
| Components of Deferred Tax Liabilities [Abstract] | ||||
| Deferred Tax Liabilities Investment In Ventures | (144) | (137) | ||
| Deferred Tax Liabilities, Property, Plant and Equipment | 246 | 0 | ||
| Deferred Tax Liabilities Other Assets | (68) | (14) | ||
| Deferred Tax Liabilities, Net | (458) | (151) | ||
| Deferred Tax Assets, Net | $ 492 | $ 459 |
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments). No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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