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Segment Information - Schedule of Segment Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 2,319,208 | $ 2,965,848 | $ 2,586,052 | $ 2,188,736 | $ 2,092,829 | $ 2,580,905 | $ 2,195,869 | $ 1,903,961 | $ 10,059,844 | $ 8,773,564 | $ 6,672,317
Intersegment revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Adjusted EBITDA |  |  |  |  |  |  |  |  | 1,712,505 | 1,615,672 | 1,103,111
Depreciation |  |  |  |  |  |  |  |  | (614,099) | (477,061) | (336,680)
Amortization of intangible assets |  |  |  |  |  |  |  |  | (275,445) | (317,141) | (156,458)
Impairment of intangible assets |  |  |  |  | (33,000) |  |  |  | 0 | (34,890) | (7,207)
Stock-based compensation |  |  |  |  |  |  |  |  | (149,350) | (242,417) | (178,068)
Legal reserves, occupancy tax and other |  |  |  |  |  |  |  |  | (25,412) | (26,498) | 104,587
Restructuring and related reorganization charges |  |  |  |  |  |  |  |  | (16,738) | (43,217) | (72,122)
Realized (gain) loss on revenue hedges |  |  |  |  |  |  |  |  | (6,323) | (12,746) | (43,597)
Operating income | 113,475 | 481,728 | 102,768 | (72,833) | 147,186 | 386,152 | 25,662 | (97,298) | 625,138 | 461,702 | 413,566
Other income (expense), net |  |  |  |  |  |  |  |  | (208,374) | (185,102) | 512,396
Income before income taxes |  |  |  |  |  |  |  |  | 416,764 | 276,600 | 925,962
Provision for income taxes |  |  |  |  |  |  |  |  | (45,405) | (15,315) | (203,214)
Net income |  |  |  |  |  |  |  |  | 371,359 | 261,285 | 722,748
Net loss attributable to non-controlling interests |  |  |  |  |  |  |  |  | 6,605 | 20,563 | 41,717
Net income attributable to Expedia, Inc. | $ 55,159 | $ 352,238 | $ 56,689 | $ (86,122) | $ 79,457 | $ 279,331 | $ 31,649 | $ (108,589) | 377,964 | 281,848 | 764,465
Corporate & Eliminations |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (413,855) | (297,318) | (214,632)
Intersegment revenue |  |  |  |  |  |  |  |  | (413,855) | (297,318) | (214,632)
Adjusted EBITDA |  |  |  |  |  |  |  |  | (657,414) | (641,168) | (509,747)
Depreciation |  |  |  |  |  |  |  |  | (213,787) | (164,956) | (116,850)
Amortization of intangible assets |  |  |  |  |  |  |  |  | (275,445) | (317,141) | (156,458)
Impairment of intangible assets |  |  |  |  |  |  |  |  |  | (34,890) | (7,207)
Stock-based compensation |  |  |  |  |  |  |  |  | (149,350) | (242,417) | (178,068)
Legal reserves, occupancy tax and other |  |  |  |  |  |  |  |  | (25,412) | (26,498) | 104,587
Restructuring and related reorganization charges |  |  |  |  |  |  |  |  | (16,738) | (43,217) | (72,122)
Realized (gain) loss on revenue hedges |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating income |  |  |  |  |  |  |  |  | (1,338,146) | (1,470,287) | (935,865)
Core OTA |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 7,880,597 | 7,083,620 | 5,877,213
Core OTA | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 7,880,597 | 7,083,620 | 5,877,213
Intersegment revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Adjusted EBITDA |  |  |  |  |  |  |  |  | 2,068,405 | 1,965,987 | 1,600,042
Depreciation |  |  |  |  |  |  |  |  | (309,842) | (255,778) | (189,318)
Amortization of intangible assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of intangible assets |  |  |  |  |  |  |  |  |  | 0 | 0
Stock-based compensation |  |  |  |  |  |  |  |  | 0 | 0 | 0
Legal reserves, occupancy tax and other |  |  |  |  |  |  |  |  | 0 | 0 | 0
Restructuring and related reorganization charges |  |  |  |  |  |  |  |  | 0 | 0 | 0
Realized (gain) loss on revenue hedges |  |  |  |  |  |  |  |  | (6,323) | (12,746) | (43,597)
Operating income |  |  |  |  |  |  |  |  | 1,752,240 | 1,697,463 | 1,367,127
trivago |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 752,352 | 538,479 | 333,024
trivago | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,166,207 | 835,797 | 547,656
Intersegment revenue |  |  |  |  |  |  |  |  | 413,855 | 297,318 | 214,632
Adjusted EBITDA |  |  |  |  |  |  |  |  | 5,439 | 34,826 | 2,856
Depreciation |  |  |  |  |  |  |  |  | (9,182) | (7,145) | (2,113)
Amortization of intangible assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of intangible assets |  |  |  |  |  |  |  |  |  | 0 | 0
Stock-based compensation |  |  |  |  |  |  |  |  | 0 | 0 | 0
Legal reserves, occupancy tax and other |  |  |  |  |  |  |  |  | 0 | 0 | 0
Restructuring and related reorganization charges |  |  |  |  |  |  |  |  | 0 | 0 | 0
Realized (gain) loss on revenue hedges |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating income |  |  |  |  |  |  |  |  | (3,743) | 27,681 | 743
HomeAway |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 906,469 | 689,186 | 20,222
HomeAway | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 906,469 | 689,186 | 20,222
Intersegment revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Adjusted EBITDA |  |  |  |  |  |  |  |  | 201,810 | 175,402 | 4,011
Depreciation |  |  |  |  |  |  |  |  | (40,211) | (17,842) | (742)
Amortization of intangible assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of intangible assets |  |  |  |  |  |  |  |  |  | 0 | 0
Stock-based compensation |  |  |  |  |  |  |  |  | 0 | 0 | 0
Legal reserves, occupancy tax and other |  |  |  |  |  |  |  |  | 0 | 0 | 0
Restructuring and related reorganization charges |  |  |  |  |  |  |  |  | 0 | 0 | 0
Realized (gain) loss on revenue hedges |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating income |  |  |  |  |  |  |  |  | 161,599 | 157,560 | 3,269
Egencia |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 520,426 | 462,279 | 400,115
Egencia | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 520,426 | 462,279 | 400,115
Intersegment revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Adjusted EBITDA |  |  |  |  |  |  |  |  | 94,265 | 80,625 | 68,116
Depreciation |  |  |  |  |  |  |  |  | (41,077) | (31,340) | (24,394)
Amortization of intangible assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of intangible assets |  |  |  |  |  |  |  |  |  | 0 | 0
Stock-based compensation |  |  |  |  |  |  |  |  | 0 | 0 | 0
Legal reserves, occupancy tax and other |  |  |  |  |  |  |  |  | 0 | 0 | 0
Restructuring and related reorganization charges |  |  |  |  |  |  |  |  | 0 | 0 | 0
Realized (gain) loss on revenue hedges |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating income |  |  |  |  |  |  |  |  | $ 53,188 | $ 49,285 | 43,722
eLong |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  | 41,743
eLong | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  | 41,743
Intersegment revenue |  |  |  |  |  |  |  |  |  |  | 0
Adjusted EBITDA |  |  |  |  |  |  |  |  |  |  | (62,167)
Depreciation |  |  |  |  |  |  |  |  |  |  | (3,263)
Amortization of intangible assets |  |  |  |  |  |  |  |  |  |  | 0
Impairment of intangible assets |  |  |  |  |  |  |  |  |  |  | 0
Stock-based compensation |  |  |  |  |  |  |  |  |  |  | 0
Legal reserves, occupancy tax and other |  |  |  |  |  |  |  |  |  |  | 0
Restructuring and related reorganization charges |  |  |  |  |  |  |  |  |  |  | 0
Realized (gain) loss on revenue hedges |  |  |  |  |  |  |  |  |  |  | 0
Operating income |  |  |  |  |  |  |  |  |  |  | $ (65,430)

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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