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Intangible Assets (Details) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2017 USD ($)
Goodwill |
Balance, beginning of period | $ 766
Goodwill acquired during period | 4
Loss on impairment | (262)
Balance, end of period | 508
U.S. Cellular |
Goodwill |
Balance, beginning of period | 227
Goodwill acquired during period | 0
Loss on impairment | (227)
Balance, end of period | 0
TDS Telecom Wireline |
Goodwill |
Balance, beginning of period | 409
Goodwill acquired during period | 0
Loss on impairment | 0
Balance, end of period | 409
TDS Telecom Cable |
Goodwill |
Balance, beginning of period | 95
Goodwill acquired during period | 4
Loss on impairment | 0
Balance, end of period | 99
TDS Telecom HMS |
Goodwill |
Balance, beginning of period | 35
Goodwill acquired during period | 0
Loss on impairment | (35)
Balance, end of period | 0
Licenses |
Licenses |
Balance, beginning of period | 1,895
Acquisitions | 331
Transferred to Assets held for sale | (5)
Exchanges - Licenses received | 18
Exchanges - Licenses surrendered | (5)
Balance, end of period | $ 2,234

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