Receivables and Allowance for Doubtful Receivables (Narrative) (Details) - USF Program - USD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Revenue support from regulatory agency, percentage | 26.00% | 24.00% | 19.00% |
| Receivables net current | $ 131.8 | $ 100.5 | |
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- Definition Public Utilities, Revenue Support From Regulatory Agency, Percentage No definition available.
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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 The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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