XML 95 R79.htm IDEA: XBRL DOCUMENT v3.10.0.1

Debt (Schedule of Principal Values, Fair Values, and Carrying Values of Debt) (Details) - USD ($) $ in Thousands									12 Months Ended
	Apr. 11, 2018	Mar. 09, 2018	Oct. 13, 2017	Apr. 17, 2017	Jul. 07, 2016	Oct. 14, 2015	Oct. 15, 2014	Apr. 18, 2013	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Principal Balance									$ 10,028,000	$ 9,405,000
Fair Value									9,736,246	9,436,290
Carrying Value									9,938,553	9,310,686
Less: current maturities of long-term debt									(941,728)	(20,000)
Total long-term debt, net of current maturities									$ 8,996,825	9,290,686
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date									Apr. 11, 2023
Principal Balance									$ 325,000	40,000
Fair Value									325,000	40,000
Carrying Value									$ 325,000	40,000
2014 Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date									Jul. 15, 2022
Principal Balance									$ 750,000	750,000
Fair Value									735,000	770,625
Carrying Value									$ 741,273	739,079
2016 Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date									Sep. 01, 2024
Principal Balance									$ 1,100,000	1,100,000
Fair Value									1,034,000	1,127,500
Carrying Value									$ 1,083,689	1,081,262
2017 Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date			Oct. 01, 2022						Oct. 01, 2022
Principal Balance									$ 750,000	750,000
Fair Value									712,500	750,938
Carrying Value									$ 743,099	741,437
2013-1C Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date								Apr. 09, 2043	Apr. 10, 2018
Principal Balance										425,000
Fair Value										423,853
Carrying Value										424,482
2013-2C Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date								Apr. 09, 2048	Apr. 11, 2023
Principal Balance									$ 575,000	575,000
Fair Value									569,164	578,433
Carrying Value									$ 569,715	568,609
2013-1D Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date								Apr. 09, 2043	Apr. 10, 2018
Principal Balance										330,000
Fair Value										330,145
Carrying Value										329,585
2014-1C Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date							Oct. 11, 2044		Oct. 08, 2019
Principal Balance									$ 920,000	920,000
Fair Value									914,241	915,216
Carrying Value									$ 917,728	914,929
2014-2C Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date							Oct. 08, 2049		Oct. 08, 2024
Principal Balance									$ 620,000	620,000
Fair Value									609,665	620,942
Carrying Value									$ 614,315	613,461
2015-1C Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date						Oct. 10, 2045			Oct. 08, 2020
Principal Balance									$ 500,000	500,000
Fair Value									496,640	496,840
Carrying Value									$ 495,737	493,474
2016-1C Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date					Jul. 10, 2046				Jul. 09, 2021
Principal Balance									$ 700,000	700,000
Fair Value									691,432	691,166
Carrying Value									$ 694,994	693,118
2017-1C Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date				Apr. 09, 2047					Apr. 11, 2022
Principal Balance									$ 760,000	760,000
Fair Value									744,496	751,404
Carrying Value									$ 753,028	751,076
2018-1C Tower Securities [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date		Mar. 09, 2048							Mar. 09, 2023
Principal Balance									$ 640,000
Fair Value									641,478
Carrying Value									$ 632,725
2014 Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date									Mar. 24, 2021
Principal Balance										1,447,500
Fair Value										1,451,119
Carrying Value										1,439,373
2015 Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date									Jun. 10, 2022
Principal Balance										487,500
Fair Value										488,109
Carrying Value										$ 480,801
2018 Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date	Apr. 11, 2025								Apr. 11, 2025
Principal Balance									$ 2,388,000
Fair Value									2,262,630
Carrying Value									$ 2,367,250

X

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611

+ Details

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_SeniorNotesThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_SeniorNotesFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_SeniorNotesFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandThirteenHyphenOneCTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandThirteenHyphenTwoCTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandThirteenHyphenOneDTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandFourteenHyphenOneCTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandFourteenHyphenTwoCTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandFifteenHyphenOneCTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandSixteenHyphenOneCTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandSeventeenHyphenOneCTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandEighteenHyphenOneCTowerSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandFourteenTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandFifteenTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=sbac_TwoThousandEighteenTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: