Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 47,798	$ 22,676	$ 188,720	$ (82,139)
Adjustments related to interest rate swaps	9,898	1,557	58,251	(114,366)
Foreign currency translation adjustments	(51,415)	(7,196)	(31,181)	(191,389)
Comprehensive income (loss)	6,281	17,037	215,790	(387,894)
Comprehensive (income) loss attributable to noncontrolling interests		(204)		1,369
Comprehensive income (loss) attributable to SBA Communications Corporation	$ 6,281	$ 16,833	$ 215,790	$ (386,525)