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v3.8.0.1

Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenue: |  |  |
Premium revenue | $ 18,854 | $ 16,445 | $ 13,261
Service revenue | 521 | 539 | 253
Premium tax revenue | 438 | 468 | 397
Health insurer fees reimbursed | 0 | 292 | 244
Investment income and other revenue | 70 | 38 | 23
Total revenue | 19,883 | 17,782 | 14,178
Operating expenses: |  |  |
Medical care costs | 17,073 | 14,774 | 11,794
Cost of service revenue | 492 | 485 | 193
General and administrative expenses | 1,594 | 1,393 | 1,146
Premium tax expenses | 438 | 468 | 397
Health insurer fees | 0 | 217 | 157
Depreciation and amortization | 137 | 139 | 104
Impairment losses | 470 | 0 | 0
Restructuring and separation costs | 234 | 0 | 0
Total operating expenses | 20,438 | 17,476 | 13,791
Operating (loss) income | (555) | 306 | 387
Interest expense | 118 | 101 | 66
Other income, net | (61) | 0 | (1)
Total other expenses, net | 57 | 101 | 65
(Loss) income before income tax (benefit) expense | (612) | 205 | 322
Income tax (benefit) expense | (100) | 153 | 179
Net (loss) income | $ (512) | $ 52 | $ 143
Net (loss) income per share: |  |  |
Basic (in dollars per share) | $ (9.07) | $ 0.93 | $ 2.75
Diluted (in dollars per share) | $ (9.07) | $ 0.92 | $ 2.58
Weighted average shares outstanding: |  |  |
Basic (in shares) | 56 | 55 | 52
Diluted (in shares) | 56 | 56 | 56

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