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Intangible Assets | 9 Months Ended
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Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | Intangible Assets Activity related to Licenses for the nine months ended September 30, 2018, is presented below:
| Licenses
(Dollars in millions) |
Balance at December 31, 2017 | $ | 2,232 |
Acquisitions | 2 |
Transferred to Assets held for sale | (42 | )
Divestitures | (11 | )
Exchanges - Licenses received | 18 |
Exchanges - Licenses surrendered | (1 | )
Balance at September 30, 2018 | $ | 2,198 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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