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Segment and Geographic Information - Summary of Segment Information (Parenthetical) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |
General and administrative | [1],[2] | $ 187 | $ 177 | $ 157
Advertising expense |  | 423 | 544 | 629
Transition tax |  |  |  | 67
Income tax expense recorded due to remeasurement of net deferred tax assets |  |  |  | 6
Reportable Segments | Hotels, Media & Platform |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
General and administrative |  | 69 | 77 | 76
Advertising expense |  | $ 77 | $ 122 | $ 82
[1] | Excludes amortization expense as follows:
[2] | Includes stock-based compensation expense as follows (Note 6):

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- Definition Tax cuts and jobs act of 2017 transition tax on deemed repatriation of accumulative foreign earnings provisional income tax expense. + References No definition available. + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- Definition Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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