Tower Sale and Leaseback (Narrative) (Details) - Tower Sale $ in Millions |
1 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
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Jul. 31, 2017
USD ($)
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Mar. 31, 2017
USD ($)
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Aug. 31, 2016
USD ($)
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Dec. 31, 2017
renewal_option
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Dec. 31, 2016
USD ($)
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| Sale Leaseback Transaction [Line Items] | |||||
| Net proceeds from sale of cell sites | $ 3.1 | $ 3.7 | $ 90.8 | ||
| Number of renewal options | renewal_option | 8 | ||||
| Renewal period (in years) | 5 years | ||||
| Annual increase in lease payments, percentage | 2.00% | ||||
| Decrease in asset retirement obligation | $ 3.4 | ||||
| Interest rate on the Tower Obligation | 7.10% | ||||
| Minimum | |||||
| Sale Leaseback Transaction [Line Items] | |||||
| Lease term (in years) | 10 years | ||||
| Maximum | |||||
| Sale Leaseback Transaction [Line Items] | |||||
| Lease term (in years) | 50 years | ||||
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- Definition Number of renewal options No definition available.
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- Definition Sale Leaseback Transaction, Rent Increase percent No definition available.
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- Definition Amount of increase (decrease) in asset retirement obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition The financing cost related to leases that have been recorded under the deposit method, as a financing or as a capital leases in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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. No definition available.
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- Definition Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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