XML 19 R1.htm IDEA: XBRL DOCUMENT

Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2020	Feb. 19, 2021	Jun. 30, 2020
Document Information [Line Items]
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	001-39548
Entity Registrant Name	BENTLEY SYSTEMS, INCORPORATED
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-3936623
Entity Address, Address Line One	685 Stockton Drive
Entity Address, City or Town	Exton
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19341
City Area Code	610
Local Phone Number	458-5000
Title of 12(b) Security	Class B Common Stock, par value $0.01 per share
Trading Symbol	BSY
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	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 0
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the proxy statement for registrant’s Annual Meeting of Stockholders (the “Proxy Statement”) are incorporated by reference in Part III of this Form 10‑K to the extent stated herein. The Proxy Statement will be filed within 120 days of the registrant’s fiscal year ended December 31, 2020.
Entity Central Index Key	0001031308
Amendment Flag	false
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		11,601,757
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		261,617,330