Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 27, 2020
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Transition Report	false
Entity File Number	001-16853
Entity Registrant Name	SBA COMMUNICATIONS CORPORATION
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	65-0716501
Entity Address, Address Line One	8051 Congress Avenue
Entity Address, City or Town	Boca Raton
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33487
City Area Code	561
Local Phone Number	995-7670
Title of 12(b) Security	Class A Common Stock, $0.01 par value per share
Trading Symbol	SBAC
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		111,624,887
Amendment Flag	false
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001034054