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Consolidated Statement Of Comprehensive Income - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Statement of Comprehensive Income [Abstract] |  |  |  |
Net income | $ 12 | $ 32 | $ 55 | $ 42
Net change in accumulated other comprehensive income |  |  |  |
Change in net unrealized gain on equity investments |  | 1 |  | 1
Change related to retirement plan |  |  |  |
Amortization of prior service cost |  | (1) | (1) | (1)
Comprehensive income | 12 | 32 | 54 | 42
Less: Net income attributable to noncontrolling interests, net of tax | 2 | 4 | 8 | 6
Comprehensive income attributable to TDS shareholders | $ 10 | $ 28 | $ 46 | $ 36

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