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Basis of Presentation (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Basis of Presentation [Line Items] |  |  |  |
Amounts recorded gross in revenues that are billed to customers and remitted to governmental authorities | $ 20 | $ 22 | $ 38 | $ 45
Equipment Installment Plans Accounting Change |  |  |  |
Service revenue | 992 | 1,019 | 1,989 | 2,032
Interest and dividend income | 4 | 3 | 8 | 5
Adjustment |  |  |  |
Equipment Installment Plans Accounting Change |  |  |  |
Service revenue | $ 17 | 12 | $ 33 | 24
Interest and dividend income |  | $ (12) |  | $ (24)
U.S. Cellular |  |  |  |
Basis of Presentation [Line Items] |  |  |  |
TDS ownership of U.S. Cellular | 83.00% |  | 83.00% |

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