Segment Information - Operating Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenue	$ 13,691	$ 12,839	$ 11,667
Selling and marketing - direct	6,846	6,107	5,428
Adjusted EBITDA	2,934	2,680	2,349
Depreciation	(781)	(748)	(704)
Amortization of intangible assets	(57)	(59)	(88)
Impairment of goodwill	0	(297)	0
Impairment of intangible assets	(147)	(129)	(81)
Stock-based compensation	(458)	(413)	(374)
Legal reserves, occupancy tax and other	(118)	(8)	(23)
Restructuring and related reorganization charges, excluding stock-based compensation	72
Realized (gain) loss on revenue hedges	18	7	6
Operating income (loss)	1,319	1,033	1,085
Other expense, net	223	(15)	(547)
Income before income taxes	1,542	1,018	538
Provision for income taxes	(318)	(330)	(195)
Net income	1,224	688	343
Net loss attributable to non-controlling interests	10	109	9
Net income attributable to Expedia Group, Inc.	1,234	797	352
Corporate
Segment Reporting Information [Line Items]
Revenue	0	0	0
Intersegment revenue
Segment Reporting Information [Line Items]
Revenue	(184)	(187)	(181)
Corporate & Eliminations
Segment Reporting Information [Line Items]
Revenue	(184)	(187)	(181)
Selling and marketing - direct	(184)	(187)	(181)
Other segment items	539	499	487
Adjusted EBITDA	(539)	(499)	(487)
Depreciation	(105)	(104)	(102)
Amortization of intangible assets	(57)	(59)	(88)
Impairment of goodwill		(297)
Impairment of intangible assets	(147)	(129)	(81)
Stock-based compensation	(458)	(413)	(374)
Legal reserves, occupancy tax and other	(118)	(8)	(23)
Restructuring and related reorganization charges, excluding stock-based compensation	72
Realized (gain) loss on revenue hedges	0	0	0
Operating income (loss)	(1,496)	(1,509)	(1,155)
B2C
Segment Reporting Information [Line Items]
Revenue	9,274	9,113	8,741
Impairment of goodwill		0
B2C | Intersegment revenue
Segment Reporting Information [Line Items]
Revenue	0	0	0
B2C | Reportable Segments
Segment Reporting Information [Line Items]
Revenue	9,274	9,113	8,741
Cost of revenue	1,296	1,375	1,381
Selling and marketing - direct	4,157	3,944	3,886
Other segment items	1,387	1,469	1,350
Adjusted EBITDA	2,434	2,325	2,124
Depreciation	(526)	(526)	(509)
Amortization of intangible assets	0	0	0
Impairment of goodwill		0
Impairment of intangible assets	0	0	0
Stock-based compensation	0	0	0
Legal reserves, occupancy tax and other	0	0	0
Restructuring and related reorganization charges, excluding stock-based compensation	0
Realized (gain) loss on revenue hedges	22	11	2
Operating income (loss)	1,930	1,810	1,617
B2B
Segment Reporting Information [Line Items]
Revenue	4,102	3,388	2,546
Impairment of goodwill		0
B2B | Intersegment revenue
Segment Reporting Information [Line Items]
Revenue	0	0	0
B2B | Reportable Segments
Segment Reporting Information [Line Items]
Revenue	4,102	3,388	2,546
Cost of revenue	117	163	243
Selling and marketing - direct	2,489	1,990	1,381
Other segment items	468	437	323
Adjusted EBITDA	1,028	798	599
Depreciation	(145)	(113)	(85)
Amortization of intangible assets	0	0	0
Impairment of goodwill		0
Impairment of intangible assets	0	0	0
Stock-based compensation	0	0	0
Legal reserves, occupancy tax and other	0	0	0
Restructuring and related reorganization charges, excluding stock-based compensation	0
Realized (gain) loss on revenue hedges	(4)	(4)	4
Operating income (loss)	879	681	518
trivago
Segment Reporting Information [Line Items]
Revenue	315	338	380
Impairment of goodwill		(297)
trivago | Intersegment revenue
Segment Reporting Information [Line Items]
Revenue	184	187	181
trivago | Reportable Segments
Segment Reporting Information [Line Items]
Revenue	499	525	561
Cost of revenue	16	17	17
Selling and marketing - direct	384	360	342
Other segment items	88	92	89
Adjusted EBITDA	11	56	113
Depreciation	(5)	(5)	(8)
Amortization of intangible assets	0	0	0
Impairment of goodwill		0
Impairment of intangible assets	0	0	0
Stock-based compensation	0	0	0
Legal reserves, occupancy tax and other	0	0	0
Restructuring and related reorganization charges, excluding stock-based compensation	0
Realized (gain) loss on revenue hedges	0	0	0
Operating income (loss)	$ 6	$ 51	$ 105