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Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Remaining performance obligations | $ 3.2 |
Revenue remaining performance obligation, per year | 0.8 |
Sprint |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Contract with Customer, Refund Liability | 7.0 | $ 7.0
Monthly revenue from contract with customer | $ 1.5 |

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- Definition Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 55 -Paragraph 27 -URI http://asc.fasb.org/extlink&oid=118944142&loc=SL49130611-203046-203046 + Details
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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130556-203045 + Details
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