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Related Party Transactions - Purchases from Related Parties (Detail) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Related Party Transaction [Line Items] |  |
Purchases from related parties | $ 122 | $ 107
Crowley Blue Water Partners |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 14 | 0
Crowley Ocean Partners |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 19 | 6
Explorer |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 0 | 2
Illinois Extension Pipeline |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 25 | 27
LOCAP |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 5 | 6
LOOP |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 13 | 13
TAAE |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 8 | 9
TACE |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 16 | 17
TAME |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | 17 | 20
Other equity method investees |  |
Related Party Transaction [Line Items] |  |
Purchases from related parties | $ 5 | $ 7

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