Asset Retirement Obligations and Accrued Environmental Costs - Summary of Asset Retirement Obligations and Accrued Environmental Costs (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	May 17, 2023	Dec. 31, 2022
Asset Retirement Obligation Disclosure [Abstract]
Asset retirement obligations	$ 498	$ 464	$ 766	$ 751
Accrued environmental costs	21	23
Total asset retirement obligations and accrued environmental costs	519	487
Less: asset retirement obligations and accrued environmental costs due within one year	51	18
Asset retirement obligations and accrued environmental costs due after one year	$ 468	$ 469	$ 442
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Asset retirement obligations and accrued environmental costs due after one year	Asset retirement obligations and accrued environmental costs due after one year
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities