Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 13, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Trading Symbol	EXPE
Entity Registrant Name	EXPEDIA GROUP, INC.
Entity Central Index Key	0001324424
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		136,651,105
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		12,799,999