Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Jul. 31, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-36720
Entity Registrant Name	UPLAND SOFTWARE, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-2992077
Entity Address, Address Line One	401 Congress Ave., Suite 1850
Entity Address, City or Town	Austin
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	78701
City Area Code	512
Local Phone Number	960-1010
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	UPLD
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		25,368,192
Entity Central Index Key	0001505155
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false
Current Fiscal Year End Date	--12-31