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Asset Retirement Obligations
 12 Months Ended
Dec. 31, 2023
Asset Retirement Obligation [Abstract]  
Asset Retirement Obligations ASSET RETIREMENT OBLIGATIONS
The following table summarizes the Company’s 2023 and 2022 activity related to asset retirement obligations:
(in millions)20232022
Asset retirement obligation at January 1$105 $109 
Accretion of discount6 6 
Obligations incurred1 1 
Obligations settled/removed(1)(10)
Revisions of estimates8 (1)
Asset retirement obligation at December 31$119 $105 
Current liability$4 $6 
Long-term liability115 99 
Asset retirement obligation at December 31$119 $105