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Goodwill | 6 Months Ended
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Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill Goodwill by segment and changes in goodwill are reflected in the following table (in millions):
| Transportation |  | Facilities |  | Supply and Logistics |  | Total
Balance at December 31, 2017 | $ | 1,070 |  |  | $ | 988 |  |  | $ | 508 |  |  | $ | 2,566 |
Foreign currency translation adjustments | (11 | ) |  | (5 | ) |  | (3 | ) |  | (19 | )
Dispositions and reclassifications to assets held for sale | (9 | ) |  | (3 | ) |  | — |  |  | (12 | )
Balance at June 30, 2018 | $ | 1,050 |  |  | $ | 980 |  |  | $ | 505 |  |  | $ | 2,535 |
We completed our goodwill impairment test as of June 30, 2018 and determined that there was no impairment of goodwill.

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- Definition The entire disclosure for goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
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