XML 47 R31.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Summary of Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Summary of Significant Accounting Policies [Abstract] |
Schedule of Asset Classes and Related Estimated Useful Lives |
﻿ |
﻿ |
﻿Towers and related components | 3 - 15 years
﻿Furniture, equipment and vehicles | 2 - 7 years
Buildings and improvements | 10 - 30 years
﻿
Allowance for Doubtful Accounts |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | For the year ended December 31,
﻿ |  | 2018 |  | 2017 |  | 2016
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  | (in thousands)
﻿Beginning balance |  | $ | 26,481 |  | $ | 24,518 |  | $ | 1,681
﻿Provision for doubtful accounts |  |  | 551 |  |  | 2,909 |  |  | 22,516
﻿Write-offs, net of recoveries |  |  | (591) |  |  | (647) |  |  | (614)
﻿Currency translation adjustment |  |  | (2,561) |  |  | (299) |  |  | 935
﻿Ending balance |  | $ | 23,880 |  | $ | 26,481 |  | $ | 24,518
﻿

X
- Definition Schedule of finite lived tangible assets by major class and by estimated useful lives. + References No definition available. + Details
Name: | sbac_ScheduleOfFiniteLivedTangibleAssetsByMajorClassAndByEstimatedUsefulLivesTableTextBlock
Namespace Prefix: | sbac_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration