COVER - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Mar. 05, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	0-21513
Entity Registrant Name	DXP Enterprises, Inc.
Entity Incorporation, State or Country Code	TX
Entity Tax Identification Number	76-0509661
Entity Address, Address Line One	5301 Hollister
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77040
City Area Code	713
Local Phone Number	996-4700
Title of 12(b) Security	Common Stock par value $0.01
Trading Symbol	DXPE
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 321.0
Entity Common Stock, Shares Outstanding		19,293,280
Documents Incorporated by Reference	Portions of the definitive proxy statement for our 2021 annual meeting of shareholders are incorporated by reference into Part III hereof. The 2021 proxy statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.
Entity Central Index Key	0001020710
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false