Related Party Transactions - Purchases from Related Parties (Detail) - USD ($)
$ in Millions |
3 Months Ended |
Mar. 31, 2018 |
Mar. 31, 2017 |
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
$ 141
|
$ 122
|
| Crowley Blue Water Partners |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
16
|
14
|
| Crowley Ocean Partners |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
20
|
19
|
| Illinois Extension Pipeline |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
24
|
25
|
| LOCAP |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
4
|
5
|
| LOOP |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
17
|
13
|
| TAAE |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
19
|
8
|
| TACE |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
8
|
16
|
| TAME |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
20
|
17
|
| Other equity method investees |
|
|
| Related Party Transaction [Line Items] |
|
|
| Purchases from related parties |
$ 13
|
$ 5
|