Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Jun. 30, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Registrant Name	SBA COMMUNICATIONS CORPORATION
Entity Central Index Key	0001034054
Entity File Number	001-16853
Entity Incorporation, State Country Name	Florida
Entity Tax Identification Number	650716501
Entity Address, Address Line One	8051 Congress Avenue
Entity Address, City or Town	Boca Raton
Entity Address, State or Province	Florida
Entity Address, Postal Zip Code	33487
City Area Code	561
Local Phone Number	995-7670
Entity Current Reporting Status	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		113,105,564