Earnings Per Share (Weighted-Average Shares of Common Stock Outstanding used in Calculation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net income attributable to SBA Communications Corporation	$ 100,009	$ 47,798	$ 358,150	$ 188,720
Basic weighted-average shares outstanding	107,916	109,577	107,950	109,487
Dilutive impact of stock options, RSUs, and PSUs	1,442	1,988	1,466	1,842
Diluted weighted-average shares outstanding	109,358	111,565	109,416	111,329
Net income per common share attributable to SBA Communications Corporation:
Basic	$ 0.93	$ 0.44	$ 3.32	$ 1.72
Diluted	$ 0.91	$ 0.43	$ 3.27	$ 1.70