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								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net income attributable to SBA Communications Corporation	$ 103,281	$ 100,009	$ 69,516	$ 188,623	$ 48,902	$ 47,798	$ 152,669	$ (11,745)	$ 461,429	$ 237,624	$ 24,104
Basic weighted-average shares outstanding									107,957	109,328	111,532
Dilutive impact of stock options, RSUs, and PSUs									1,429	1,849	1,933
Diluted weighted-average shares outstanding									109,386	111,177	113,465
Net income per common share attributable to SBA Communications Corporation:
Basic									$ 4.27	$ 2.17	$ 0.22
Diluted									$ 4.22	$ 2.14	$ 0.21