Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Feb. 15, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	000-26489
Entity Registrant Name	ENCORE CAPITAL GROUP, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	48-1090909
Entity Address, Address Line One	350 Camino De La Reina
Entity Address, Address Line Two	Suite 100
Entity Address, City or Town	San Diego
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92108
City Area Code	877
Local Phone Number	445-4581
Title of 12(b) Security	Common Stock, $0.01 Par Value Per Share
Trading Symbol	ECPG
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 1,120.9
Entity Common Stock, Shares Outstanding		23,545,102
Documents Incorporated by Reference	Portions of the registrant’s definitive proxy statement in connection with its annual meeting of stockholders to be held in 2024 are incorporated by reference in Items 10, 11, 12, 13, and 14 of Part III of this Annual Report on Form 10-K for the fiscal year ended December 31, 2023, which proxy statement will be filed no later than 120 days after the close of the registrant’s fiscal year December 31, 2023.
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Entity Central Index Key	0001084961