| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenues: | ||||||||||||||||
| Site leasing | ||||||||||||||||
| Site development | ||||||||||||||||
| Total revenues | ||||||||||||||||
| YoY growth | +2.3% | +5.9% | +3.7% | +9.7% | ||||||||||||
| Cost of Revenue | ||||||||||||||||
| Cost of site leasing | ||||||||||||||||
| Cost of site development | ||||||||||||||||
| Selling, general, and administrative expenses | ||||||||||||||||
| Acquisition and new business initiatives related adjustments and expenses | ||||||||||||||||
| Asset impairment and decommission costs | ||||||||||||||||
| Depreciation, accretion, and amortization | ||||||||||||||||
| Total operating expenses | ||||||||||||||||
| % of revenue | 50.8% | 51.3% | 58.5% | 48.9% | ||||||||||||
| Operating income | ||||||||||||||||
| % of revenue | 49.2% | 48.7% | 41.5% | 51.1% | ||||||||||||
| Other income (expense): | ||||||||||||||||
| Interest income | ||||||||||||||||
| Interest expense | ||||||||||||||||
| Non-cash interest expense | ||||||||||||||||
| Amortization of deferred financing fees | ||||||||||||||||
| Other income, net | ||||||||||||||||
| Total other expense, net | ||||||||||||||||
| Income before income taxes | ||||||||||||||||
| Provision for income taxes | ||||||||||||||||
| Net income | ||||||||||||||||
| % of revenue | 27.5% | 26.3% | 51.5% | 32.8% | ||||||||||||
| Net loss attributable to noncontrolling interests | ||||||||||||||||
| Net income attributable to SBA Communications Corporation | ||||||||||||||||
| % of revenue | 27.8% | 26.3% | 51.5% | 32.3% | ||||||||||||
| Net income per common share attributable to SBA Communications Corporation: | ||||||||||||||||
| Basic | ||||||||||||||||
| Diluted |