XML 77 R35.htm IDEA: XBRL DOCUMENT v3.7.0.1
Intangible Assets (Details)
$ in Millions
3 Months Ended
Mar. 31, 2017
USD ($)
TDS Telecom Cable  
Intangible assets, other disclosures  
Goodwill acquired during period $ 4
Other intangible assets acquired 1
Licenses  
Licenses  
Balance, beginning of period 1,895
Acquisitions 3
Transferred to Assets held for sale (5)
Exchange - Licenses received 11
Balance, end of period $ 1,904