XML 81 R71.htm IDEA: XBRL DOCUMENT v3.22.4
Schedule of Change in Asset Retirement Obligations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Asset Retirement Obligation Disclosure [Abstract]      
Asset Retirement Obligation $ 269 $ 291 $ 279
Asset Retirement Obligation, Liabilities Incurred 1 0 3
Asset Retirement Obligation, Cash Paid to Settle (27) (18) (18)
Asset Retirement Obligation, Accretion Expense 10 10 10
Asset Retirement Obligation, Revision of Estimate 36 (14) 17
Asset Retirement Obligation $ 289 $ 269 $ 291