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Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017
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Related Party Transaction [Line Items] |  |
Due from related parties, noncurrent | $ 1 | $ 1
Crowley Blue Water Partners |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 50.00% |
Crowley Ocean Partners |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 50.00% |
Illinois Extension Pipeline |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 35.00% |
LOCAP |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 59.00% |
LOOP |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 51.00% |
MarkWest Utica EMG |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 56.00% |
Ohio Gathering |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 34.00% |
PFJ Southeast |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 29.00% |
Sherwood Midstream |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 50.00% |
Sherwood Midstream Holdings |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 81.00% |
TAAE |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 45.00% |
TACE |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 61.00% |
TAME |  |
Related Party Transaction [Line Items] |  |
Equity method investments, ownership percentage | 67.00% |

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- Definition Aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due after one year (or one business cycle). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.11) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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