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Property, Plant and Equipment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |
Property, plant and equipment, gross |  | $ 66,217 | $ 63,122 |
Less accumulated depreciation |  | 20,462 | 18,800 |
Subtotal property, plant, and equipment, net |  | 45,755 | 44,322 |
Capitalized major maintenance costs for reaction-based plants, net of accumulated amortization | [1] | 49 | 79 |
Property, plant and equipment, net |  | 45,804 | 44,401 | $ 42,088
Summary of depreciation expense and capitalized interest [Abstract] |  |  |  |
Depreciation expense | [2] | 1,860 | 1,779 | 1,705
Capitalized interest | [3] | 106 | 90 | 80
Asset Retirement Obligations [Roll Forward] |  |  |  |
ARO liability beginning balance |  | 234 | 176 | 150
Liabilities incurred | [4] | 5 | 20 | 6
Revisions in estimated cash flows | [5] | (12) | 30 | 6
Liabilities settled | [6] | (13) | (10) | (4)
Accretion expense | [7] | 11 | 18 | 18
ARO liability ending balance |  | 225 | 234 | $ 176
Asset retirement obligation, current liability |  | 4 |  |
Asset retirement obligations, long-term liability |  | 221 | 214 |
Capitalized costs, asset retirement costs |  | 109 | 117 |
Forecasted accretion expense [Abstract] |  |  |  |
2024 |  | 13 |  |
2025 |  | 14 |  |
2026 |  | 15 |  |
2027 |  | 16 |  |
2028 |  | 16 |  |
Plants, pipelines and facilities [Member] |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |
Property, plant and equipment, gross | [8] | $ 57,983 | 54,396 |
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] | $ 4,401 | 4,329 |
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] | $ 242 | 222 |
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] | $ 935 | 921 |
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 |  | $ 411 | 387 |
Construction in progress [Member] |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |
Property, plant and equipment, gross |  | $ 2,245 | $ 2,867 |
Distillation-based and reaction-based plants [Member] | Minimum [Member] |  |  |  |
Property, plant and equipment and accumulated depreciation [Abstract] |  |  |  |
Estimated useful life |  | 20 years |  |
Distillation-based and reaction-based 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 |  | 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 remaining amortization period for these costs is 0.8 years.
[2] | Depreciation expense is a component of “Third party and other costs” within “Costs and expenses” as presented on our Statements of Consolidated Operations.
[3] | Capitalized interest is a component of “Interest expense” as presented on our Statements of Consolidated Operations.
[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 distillation-based and reaction-based 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: distillation-based and reaction-based 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.

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