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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Property, Plant and Equipment [Line Items] |  |  |
Depreciation and amortization | $ 178 | $ 169 |
Service Life |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Depreciation and amortization | $ 18 |  |
Class A Shares |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Basic and diluted net income/(loss) per Class A share (in dollars per share) | $ 0.36 | $ (3.18) |
Class A Shares | Service Life |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Basic and diluted net income/(loss) per Class A share (in dollars per share) | $ (0.02) |  |
Pipeline and related facilities and Storage, terminal and rail facilities | Minimum |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property and equipment, useful life |  |  | 10 years
Pipeline and related facilities and Storage, terminal and rail facilities | Minimum | Service Life |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property and equipment, useful life | 10 years |  |
Pipeline and related facilities and Storage, terminal and rail facilities | Maximum |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property and equipment, useful life |  |  | 70 years
Pipeline and related facilities and Storage, terminal and rail facilities | Maximum | Service Life |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property and equipment, useful life | 50 years |  |

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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256 + Details
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