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Basis of Presentation (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Basis of Presentation [Line Items]        
Amounts recorded gross in revenues that are billed to customers and remitted to governmental authorities $ 21 $ 24 $ 65 $ 75
U.S. Cellular        
Basis of Presentation [Line Items]        
TDS ownership of U.S. Cellular 83.00%   83.00%