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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Noncurrent Deferred Income Tax Assets |  |
Tax credit carryforwards | $ 84 | $ 125
Loss carryforwards | 1,081 | 1,182
Identifiable intangible assets | 380 | 456
Long-term debt | 173 | 121
Employee benefit obligations | 117 | 108
Commodity contracts and interest rate swaps | 664 | 764
Other | 33 | 49
Total deferred tax assets | 2,532 | 2,805
Noncurrent Deferred Income Tax Liabilities |  |
Property, plant and equipment | 1,264 | 1,033
Total deferred tax liabilities | 1,264 | 1,033
Valuation allowance | 46 | 63
Net Deferred Income Tax Asset | $ 1,222 | $ 1,709

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