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Estimates (Schedule of Other Non-Current Assets, net) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Accounting Policies [Abstract]    
Crude pipeline linefill and tank bottoms $ 598 $ 489
Regulatory assets 48 55
Pension assets 145 129
Deferred charges 148 140
Restricted funds 121 121
Other 673 624
Total other non-current assets, net $ 1,733 $ 1,558