Cover - shares	3 Months Ended
	Mar. 31, 2022	Apr. 25, 2022
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	001-39952
Entity Registrant Name	QUALTRICS INTERNATIONAL INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-1754215
Entity Address, Address Line One	333 West River Park Drive
Entity Address, City or Town	Provo
Entity Address, State or Province	UT
Entity Address, Postal Zip Code	84604
City Area Code	385
Local Phone Number	203-4999
Title of 12(b) Security	Class A Common Stock, $0.0001 par value per share
Trading Symbol	XM
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Central Index Key	0001747748
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		159,154,517
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		423,170,610