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Income Taxes - Deferred Tax Assets and Liabilities Table (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax liabilities: |  |
Property, plant and equipment | $ 0 | $ (546)
Volumetric production payments | 0 | (89)
Derivative instruments | 0 | (14)
Other | (3) | (5)
Deferred tax liabilities | (3) | (654)
Deferred tax assets: |  |
Property, plant and equipment | 907 | 0
Net operating loss carryforwards | 2,066 | 1,971
Carrying value of debt | 48 | 169
Disallowed business interest carryforward | 293 | 25
Asset retirement obligations | 34 | 50
Investments | 71 | 83
Accrued liabilities | 288 | 64
Derivative instruments | 53 | 0
Other | 51 | 87
Deferred tax assets | 3,811 | 2,449
Valuation allowance | (3,808) | (1,805)
Deferred tax assets after valuation allowance | 3 | 644
Net deferred tax liability | $ 0 | $ (10)

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