Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
|  |  | 2018 | 2017 | 2018 | 2017 |
| --- | --- | --- | --- | --- | --- |
|  |  | Gross  Carrying Amount | Gross  Carrying Amount | Accumulated Amortization | Accumulated Amortization |
| Goodwill |  | $4,523 | $4,523 |  |  |
| Finite-lived intangible assets | Frequent flyer database | $1,177 | $1,177 | $884 | $832 |
| Finite-lived intangible assets | Hubs | 145 | 145 | 97 | 89 |
| Finite-lived intangible assets | Contracts | 120 | 121 | 106 | 103 |
| Finite-lived intangible assets | Patents and tradenames | 108 | 108 | 108 | 108 |
| Finite-lived intangible assets | Airport slots and gates | 97 | 97 | 97 | 97 |
| Finite-lived intangible assets | Other | 109 | 109 | 88 | 84 |
| Finite-lived intangible assets | Total | $1,756 | $1,757 | $1,380 | $1,313 |
| Indefinite-lived intangible assets | Route authorities | $1,240 | $1,562 |  |  |
| Indefinite-lived intangible assets | Airport slots and gates | 546 | 536 |  |  |
| Indefinite-lived intangible assets | Tradenames and logos | 593 | 593 |  |  |
| Indefinite-lived intangible assets | Alliances | 404 | 404 |  |  |
| Indefinite-lived intangible assets | Total | $2,783 | $3,095 |  |  |
Question:
What is the goodwill value of United Airlines in 2018?
Answer:
$4,523