Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
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

Monthly Revenue From Contract With Customer

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- Definition

Revenue Remaining Performance Obligation, Amount Per Year

+ References

No definition available.

+ Details

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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

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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.

+ References

No definition available.

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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

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