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Other Noncurrent Liabilities - Change in Assets Retirement Obligations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Balance at beginning of year $ 81 $ 79
Liabilities incurred 0 0
Liabilities settled (1) (2)
Accretion expense 4 4
Balance at end of year $ 84 $ 81