Basis of Presentation (Policy)	3 Months Ended
Mar. 31, 2023
Basis of Presentation [Abstract]
Basis of Presentation	The accompanying consolidated financial statements should be read in conjunction with the Annual Report on Form 10-K for the fiscal year ended December 31, 2022 for SBA Communications Corporation and its subsidiaries (the “Company”). These financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X and, therefore, omit or condense certain footnotes and other information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States. In the opinion of the Company’s management, all adjustments (consisting of normal recurring accruals and deferrals) considered necessary for fair financial statement presentation have been made. The results of operations for an interim period may not give a true indication of the results for the year. Certain reclassifications have been made to prior year amounts or balances to conform to the presentation adopted in the current year. The preparation of financial statements requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. While the Company believes that such estimates are fair when considered in conjunction with the consolidated financial statements and accompanying notes, the actual amounts, when known, may vary from these estimates.
Foreign Currency Translation	Foreign Currency Translation All assets and liabilities of foreign subsidiaries that do not utilize the U.S. dollar as its functional currency are translated at period-end exchange rates, while revenues and expenses are translated at monthly average exchange rates during the period. Unrealized translation gains and losses are reported as foreign currency translation adjustments through Accumulated other comprehensive loss, net in the Consolidated Statement of Shareholders’ Deficit. For foreign subsidiaries where the U.S. dollar is the functional currency, monetary assets and liabilities of such subsidiaries, which are not denominated in U.S. dollars, are remeasured at exchange rates in effect at the balance sheet date, and revenues and expenses are remeasured at monthly average rates prevailing during the year. Remeasurement gains and losses are reported as Other income, net in the Consolidated Statements of Operations.
Intercompany Loans Subject to Remeasurement	Intercompany Loans Subject to RemeasurementIn accordance with Accounting Standards Codification (ASC) 830, the Company remeasures foreign denominated intercompany loans with the corresponding change in the balance being recorded in Other income, net in the Consolidated Statements of Operations as settlement is anticipated or planned in the foreseeable future. The Company recorded a $27.4 million gain and a $72.9 million gain, net of taxes, on the remeasurement of intercompany loans for the three months ended March 31, 2023 and 2022, respectively, due to changes in foreign exchange rates. During the three months ended March 31, 2023, the Company repaid $45.8 million under its intercompany loan agreements. As of March 31, 2023 and December 31, 2022, the aggregate amount outstanding under the intercompany loan agreements subject to remeasurement with the Company’s foreign subsidiaries was $1.5 billion.

Basis of Presentation (Policy)

3 Months Ended

Mar. 31, 2023

The accompanying consolidated financial statements should be read in conjunction with the Annual Report on Form 10-K for the fiscal year ended December 31, 2022 for SBA Communications Corporation and its subsidiaries (the “Company”). These financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X and, therefore, omit or condense certain footnotes and other information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States. In the opinion of the Company’s management, all adjustments (consisting of normal recurring accruals and deferrals) considered necessary for fair financial statement presentation have been made. The results of operations for an interim period may not give a true indication of the results for the year. Certain reclassifications have been made to prior year amounts or balances to conform to the presentation adopted in the current year.

The preparation of financial statements requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. While the Company believes that such estimates are fair when considered in conjunction with the consolidated financial statements and accompanying notes, the actual amounts, when known, may vary from these estimates.

Foreign Currency Translation

All assets and liabilities of foreign subsidiaries that do not utilize the U.S. dollar as its functional currency are translated at period-end exchange rates, while revenues and expenses are translated at monthly average exchange rates during the period. Unrealized translation gains and losses are reported as foreign currency translation adjustments through Accumulated other comprehensive loss, net in the Consolidated Statement of Shareholders’ Deficit.

For foreign subsidiaries where the U.S. dollar is the functional currency, monetary assets and liabilities of such subsidiaries, which are not denominated in U.S. dollars, are remeasured at exchange rates in effect at the balance sheet date, and revenues and expenses are remeasured at monthly average rates prevailing during the year. Remeasurement gains and losses are reported as Other income, net in the Consolidated Statements of Operations.

Intercompany Loans Subject to Remeasurement

Intercompany Loans Subject to RemeasurementIn accordance with Accounting Standards Codification (ASC) 830, the Company remeasures foreign denominated intercompany loans with the corresponding change in the balance being recorded in Other income, net in the Consolidated Statements of Operations as settlement is anticipated or planned in the foreseeable future. The Company recorded a $27.4 million gain and a $72.9 million gain, net of taxes, on the remeasurement of intercompany loans for the three months ended March 31, 2023 and 2022, respectively, due to changes in foreign exchange rates. During the three months ended March 31, 2023, the Company repaid $45.8 million under its intercompany loan agreements. As of March 31, 2023 and December 31, 2022, the aggregate amount outstanding under the intercompany loan agreements subject to remeasurement with the Company’s foreign subsidiaries was $1.5 billion.