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Revenue Recognition, Consolidated Statement Of Operations (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Operating revenues |  |  |  |
Service | $ 741 | $ 740 | $ 1,465 | $ 1,486
Equipment sales | 233 | 223 | 450 | 413
Total operating revenues | 974 | 963 | 1,915 | 1,899
Cost of equipment sold | 240 | 260 | 459 | 488
Selling, general and administrative | 342 | 351 | 668 | 691
(Gain) loss on license sales and exchanges, net | (11) | (2) | (17) | (19)
Total operating expenses | 918 | 958 | 1,794 | 1,840
Operating income (loss) | 56 | 5 | 121 | 59
Income (loss) before income taxes | 70 | 12 | 147 | 73
Income tax expense (benefit) | 18 |  | 40 | 33
Net income (loss) | 52 | 12 | 107 | 40
Net income (loss) attributable to U.S. Cellular shareholders | $ 49 | $ 12 | $ 93 | $ 38
Basic earnings (loss) per share attributable to U.S. Cellular shareholders | $ 0.57 | $ 0.14 | $ 1.09 | $ 0.45
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders | $ 0.56 | $ 0.14 | $ 1.08 | $ 0.44
Results under prior accounting standards |  |  |  |
Operating revenues |  |  |  |
Service | $ 770 |  | $ 1,524 |
Equipment sales | 212 |  | 409 |
Total operating revenues | 982 |  | 1,932 |
Cost of equipment sold | 242 |  | 464 |
Selling, general and administrative | 339 |  | 665 |
(Gain) loss on license sales and exchanges, net | (11) |  | (16) |
Total operating expenses | 916 |  | 1,797 |
Operating income (loss) | 65 |  | 135 |
Income (loss) before income taxes | 79 |  | 161 |
Income tax expense (benefit) | 20 |  | 44 |
Net income (loss) | 59 |  | 118 |
Net income (loss) attributable to U.S. Cellular shareholders | $ 56 |  | $ 104 |
Basic earnings (loss) per share attributable to U.S. Cellular shareholders | $ 0.65 |  | $ 1.22 |
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders | $ 0.64 |  | $ 1.20 |
Adjustment | ASU 2014-09 |  |  |  |
Operating revenues |  |  |  |
Service | $ (29) |  | $ (59) |
Equipment sales | 21 |  | 41 |
Total operating revenues | (8) |  | (17) |
Cost of equipment sold | (2) |  | (5) |
Selling, general and administrative | 3 |  | 3 |
(Gain) loss on license sales and exchanges, net | 0 |  | (1) |
Total operating expenses | 2 |  | (3) |
Operating income (loss) | (9) |  | (14) |
Income (loss) before income taxes | (9) |  | (14) |
Income tax expense (benefit) | (2) |  | (4) |
Net income (loss) | (7) |  | (11) |
Net income (loss) attributable to U.S. Cellular shareholders | $ (7) |  | $ (11) |
Basic earnings (loss) per share attributable to U.S. Cellular shareholders | $ (0.08) |  | $ (0.13) |
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders | $ (0.08) |  | $ (0.12) |

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