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Intangible Assets - Narrative (Details) | 1 Months Ended | 3 Months Ended
--- | --- | ---
Apr. 30, 2017 USD ($) license | Jun. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |
FCC upfront payment |  | $ 143,000,000 |  |
Licenses won | license | 188 |  |  |
Aggregate purchase price of licenses | $ 329,000,000 |  |  |
Remaining payment made |  |  |  | $ 186,000,000
Goodwill |  |  |  |
Loss on impairment |  |  | $ 370,000,000 |
Goodwill |  |  | $ 0 |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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