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Property, Plant and Equipment (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Property, plant and equipment and accumulated depreciation [Abstract]          
Property, plant and equipment, gross $ 61,987   $ 61,987   $ 59,085
Less accumulated depreciation 17,933   17,933   17,083
Subtotal property, plant, and equipment, net 44,054   44,054   42,002
Capitalized major maintenance costs for reaction-based plants, net of accumulated amortization [1] 75   75   86
Property, plant and equipment, net 44,129   44,129   42,088
Summary of depreciation expense and capitalized interest [Abstract]          
Depreciation expense [2] 445 $ 425 883 $ 849  
Capitalized interest [3] 21 21 38 41  
Asset Retirement Obligations [Roll Forward]          
Balance at beginning of period     176    
Liabilities incurred [4]     14    
Revisions in estimated cash flows [5]     23    
Liabilities settled [6]     (2)    
Accretion expense [2] 6 $ 1 8 [7] $ 3  
Balance at end of period 219   219    
Asset retirement obligation, current liability 16   16    
Asset retirement obligations, long-term liability 203   203    
Capitalized costs, asset retirement costs 114   114   81
Plants, pipelines and facilities [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Property, plant and equipment, gross [8] 53,912   $ 53,912   51,636
Plants, pipelines and facilities [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life [8],[9]     3 years    
Plants, pipelines and facilities [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life [8],[9]     45 years    
Underground and other storage facilities [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Property, plant and equipment, gross [10] 4,335   $ 4,335   4,327
Underground and other storage facilities [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life [10],[11]     5 years    
Underground and other storage facilities [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life [10],[11]     40 years    
Transportation equipment [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Property, plant and equipment, gross [12] 218   $ 218   209
Transportation equipment [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life [12]     3 years    
Transportation equipment [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life [12]     10 years    
Marine vessels [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Property, plant and equipment, gross [13] 922   $ 922   918
Marine vessels [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life [13]     15 years    
Marine vessels [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life [13]     30 years    
Land [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Property, plant and equipment, gross 387   $ 387   379
Construction in progress [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Property, plant and equipment, gross $ 2,213   $ 2,213   $ 1,616
Processing plants [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     20 years    
Processing plants [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     35 years    
Pipelines and related equipment [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     5 years    
Pipelines and related equipment [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     45 years    
Terminal facilities [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     10 years    
Terminal facilities [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     35 years    
Buildings [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     20 years    
Buildings [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     40 years    
Office furniture and equipment [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     3 years    
Office furniture and equipment [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     20 years    
Laboratory and shop equipment [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     5 years    
Laboratory and shop equipment [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     35 years    
Underground storage facilities [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     5 years    
Underground storage facilities [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     35 years    
Storage tanks [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     10 years    
Storage tanks [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     40 years    
Water wells [Member] | Minimum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     5 years    
Water wells [Member] | Maximum [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Estimated useful life     35 years    
Capitalized Major Maintenance [Member] | Weighted Average [Member]          
Property, plant and equipment and accumulated depreciation [Abstract]          
Expected remaining amortization period     1 year 9 months 18 days    
[1] For reaction-based plants, we use the deferral method when accounting for major maintenance activities.  Under the deferral method, major maintenance costs are capitalized and amortized over the period until the next major overhaul project.  On a weighted-average basis, the expected amortization period for these costs is 1.8 years.
[2] Depreciation and accretion expense is a component of “Costs and expenses” as presented on our Unaudited Condensed Statements of Consolidated Operations.
[3] We capitalize interest costs incurred on funds used to construct property, plant and equipment while the asset is in its construction phase.  The capitalized interest is recorded as part of the asset to which it relates and is amortized over the asset’s estimated useful life as a component of depreciation expense.  When capitalized interest is recorded, it reduces interest expense from what it would be otherwise.
[4] Represents the initial recognition of estimated ARO liabilities during period.
[5] Represents subsequent adjustments to estimated ARO liabilities during period.
[6] Represents cash payments to settle ARO liabilities during period.
[7] Represents net change in ARO liability balance attributable to the passage of time and other adjustments, including true-up amounts associated with revised closure estimates.
[8] Plants, pipelines and facilities include processing plants; NGL, natural gas, crude oil and petrochemical and refined products pipelines; terminal loading and unloading facilities; buildings; office furniture and equipment; laboratory and shop equipment and related assets.
[9] In general, the estimated useful lives of major assets within this category are: processing plants, 20-35 years; pipelines and related equipment, 5-45 years; terminal facilities, 10-35 years; buildings, 20-40 years; office furniture and equipment, 3-20 years; and laboratory and shop equipment, 5-35 years.
[10] Underground and other storage facilities include underground product storage caverns; above ground storage tanks; water wells and related assets.
[11] In general, the estimated useful lives of assets within this category are: underground storage facilities, 5-35 years; storage tanks, 10-40 years; and water wells, 5-35 years.
[12] Transportation equipment includes tractor-trailer tank trucks and other vehicles and similar assets used in our operations.
[13] Marine vessels include tow boats, barges and related equipment used in our marine transportation business.