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Goodwill and Intangible Assets, Net - Summary of Changes in Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Goodwill [Line Items] |  |  |
Beginning balance |  | $ 756 | $ 758
Acquisitions | [1] | 85 | 11
Other adjustments | [2] | (1) | (13)
Ending balance |  | 840 | 756
Hotel Segment |  |  |
Goodwill [Line Items] |  |  |
Beginning balance |  | 451 | 451
Allocation to new segments | [3] | (451) |
Ending balance |  |  | 451
Non-Hotel Segment |  |  |
Goodwill [Line Items] |  |  |
Beginning balance |  | 305 | 307
Allocation to new segments | [3] | (305) |
Acquisitions | [1] |  | 11
Other adjustments | [2] |  | (13)
Ending balance |  |  | $ 305
Hotels, Media & Platform |  |  |
Goodwill [Line Items] |  |  |
Allocation to new segments | [3] | 405 |
Ending balance |  | 405 |
Experiences & Dining Segment |  |  |
Goodwill [Line Items] |  |  |
Allocation to new segments | [3] | 250 |
Acquisitions | [1] | 85 |
Other adjustments | [2] | (2) |
Ending balance |  | 333 |
Other Segments |  |  |
Goodwill [Line Items] |  |  |
Allocation to new segments | [3],[4] | 101 |
Other adjustments | [2],[4] | 1 |
Ending balance | [4] | $ 102 |
[1] | The additions to goodwill relate to our business acquisitions. Refer to “Note 3: Acquisitions and Other Investments,” for further information.
[2] |
| (2) | Primarily related to impact of changes in foreign currency exchange rates to goodwill.
[3] |
| (3) | Refer to “Note 1: Organization and Business Description” for information on our reporting segment changes in the first quarter of 2019.
[4] |
| (4) | Other consists of the combination of our Rentals, Flights/Cruises/Car, SmarterTravel, and Tripadvisor China business units and does not constitute a reportable segment.

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