Fair Value Measurements - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - Commodity Contract - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Brent Linked Gas Sales Contract
Financial Assets:
Assets, fair value disclosure	$ 110
Brent Linked Gas Sales Contract | Quoted Prices in Active Markets (Level 1)
Financial Assets:
Assets, fair value disclosure	0
Brent Linked Gas Sales Contract | Significant Other Observable Inputs (Level 2)
Financial Assets:
Assets, fair value disclosure	0
Brent Linked Gas Sales Contract | Significant Unobservable Inputs (Level 3)
Financial Assets:
Assets, fair value disclosure	110
Natural Gas | Price Swaps
Financial Assets:
Assets, fair value disclosure		$ 105
Financial Liabilities:
Liabilities, fair value disclosure	117	104
Natural Gas | Price Swaps | Quoted Prices in Active Markets (Level 1)
Financial Assets:
Assets, fair value disclosure		0
Financial Liabilities:
Liabilities, fair value disclosure	0	0
Natural Gas | Price Swaps | Significant Other Observable Inputs (Level 2)
Financial Assets:
Assets, fair value disclosure		105
Financial Liabilities:
Liabilities, fair value disclosure	117	104
Natural Gas | Price Swaps | Significant Unobservable Inputs (Level 3)
Financial Assets:
Assets, fair value disclosure		0
Financial Liabilities:
Liabilities, fair value disclosure	0	0
Natural Gas | Basis Swaps
Financial Assets:
Assets, fair value disclosure	1	2
Natural Gas | Basis Swaps | Quoted Prices in Active Markets (Level 1)
Financial Assets:
Assets, fair value disclosure	0	0
Natural Gas | Basis Swaps | Significant Other Observable Inputs (Level 2)
Financial Assets:
Assets, fair value disclosure	1	2
Natural Gas | Basis Swaps | Significant Unobservable Inputs (Level 3)
Financial Assets:
Assets, fair value disclosure	$ 0	$ 0