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Revenue Recognition - Consolidated Statement Of Operations (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Operating revenues |  |  |  |
Total operating revenues | $ 1,001 | $ 963 | $ 2,916 | $ 2,862
Selling, general and administrative | 346 | 350 | 1,014 | 1,041
(Gain) loss on license sales and exchanges, net | 0 | 0 | (18) | (19)
Total operating expenses | 967 | 1,323 | 2,761 | 3,163
Operating income (loss) | 34 | (360) | 155 | (301)
Income (loss) before income taxes | 51 | (351) | 198 | (278)
Income tax expense (benefit) | 14 | (53) | 55 | (19)
Net income (loss) | 37 | (298) | 143 | (259)
Net income (loss) attributable to U.S. Cellular shareholders | $ 36 | $ (299) | $ 129 | $ (261)
Basic earnings (loss) per share attributable to U.S. Cellular shareholders (USD per share) | $ 0.42 | $ (3.51) | $ 1.51 | $ (3.07)
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders (USD per share) | $ 0.41 | $ (3.51) | $ 1.49 | $ (3.07)
Service |  |  |  |
Operating revenues |  |  |  |
Total operating revenues | $ 759 | $ 737 | $ 2,224 | $ 2,223
Cost of equipment sold | 200 | 185 | 566 | 549
Equipment sales |  |  |  |
Operating revenues |  |  |  |
Total operating revenues | 242 | 226 | 692 | 639
Cost of equipment sold | 258 | $ 261 | 716 | $ 749
Results under prior accounting standards |  |  |  |
Operating revenues |  |  |  |
Total operating revenues | 1,010 |  | 2,942 |
Selling, general and administrative | 348 |  | 1,013 |
(Gain) loss on license sales and exchanges, net |  |  | (17) |
Total operating expenses | 972 |  | 2,769 |
Operating income (loss) | 38 |  | 173 |
Income (loss) before income taxes | 55 |  | 216 |
Income tax expense (benefit) | 15 |  | 60 |
Net income (loss) | 40 |  | 156 |
Net income (loss) attributable to U.S. Cellular shareholders | $ 39 |  | $ 142 |
Basic earnings (loss) per share attributable to U.S. Cellular shareholders (USD per share) | $ 0.45 |  | $ 1.67 |
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders (USD per share) | $ 0.44 |  | $ 1.65 |
Results under prior accounting standards | Service |  |  |  |
Operating revenues |  |  |  |
Total operating revenues | $ 787 |  | $ 2,310 |
Results under prior accounting standards | Equipment sales |  |  |  |
Operating revenues |  |  |  |
Total operating revenues | 223 |  | 632 |
Cost of equipment sold | 261 |  | 724 |
Adjustment | ASU 2014-09 |  |  |  |
Operating revenues |  |  |  |
Total operating revenues | (9) |  | (26) |
Selling, general and administrative | (2) |  | 1 |
(Gain) loss on license sales and exchanges, net |  |  | (1) |
Total operating expenses | (5) |  | (8) |
Operating income (loss) | (4) |  | (18) |
Income (loss) before income taxes | (4) |  | (18) |
Income tax expense (benefit) | (1) |  | (5) |
Net income (loss) | (3) |  | (13) |
Net income (loss) attributable to U.S. Cellular shareholders | $ (3) |  | $ (13) |
Basic earnings (loss) per share attributable to U.S. Cellular shareholders (USD per share) | $ (0.03) |  | $ (0.16) |
Diluted earnings (loss) per share attributable to U.S. Cellular shareholders (USD per share) | $ (0.03) |  | $ (0.16) |
Adjustment | ASU 2014-09 | Service |  |  |  |
Operating revenues |  |  |  |
Total operating revenues | $ (28) |  | $ (86) |
Adjustment | ASU 2014-09 | Equipment sales |  |  |  |
Operating revenues |  |  |  |
Total operating revenues | 19 |  | 60 |
Cost of equipment sold | $ (3) |  | $ (8) |

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