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Summary of Significant Accounting Policies (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Summary Of Significant Accounting Policies [Line Items] |  |  |
Impairment of intangible assets | $ 0 | $ 0 | $ 0
Crude oil pipelines and natural gas pipelines and related assets | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 5 years |  |
Crude oil pipelines and natural gas pipelines and related assets | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 40 years |  |
Marine vessels | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 20 years |  |
Marine vessels | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 30 years |  |
Onshore facilities, machinery, and equipment | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 3 years |  |
Onshore facilities, machinery, and equipment | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 30 years |  |
Transportation equipment | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 3 years |  |
Transportation equipment | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 7 years |  |
Building and improvements | Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 3 years |  |
Building and improvements | Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives of property and equipment | 20 years |  |
Poseidon Oil Pipeline Company | Offshore pipeline transportation |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Equity investment, ownership percentage | 64.00% |  |
Neptune Pipeline Company LLC | Offshore pipeline transportation |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Equity investment, ownership percentage | 25.70% |  |
Odyssey Pipeline L.L.C. | Offshore pipeline transportation |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Equity investment, ownership percentage | 29.00% |  |
Paloma Pipeline Company | Offshore pipeline transportation |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Equity investment, ownership percentage | 26.80% |  |

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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