v3.8.0.1

Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of changes In goodwill by operating segment | The following table summarizes the changes in goodwill by operating segment ($ in millions):
| Managed Care |  | Specialty Services |  | Total
Balance as of December 31, 2015 | $ | 361 |  |  | $ | 481 |  |  | $ | 842 |
Acquisitions and purchase accounting adjustments | 3,657 |  |  | 216 |  |  | 3,873 |
Translation impact | (3 | ) |  | — |  |  | (3 | )
Balance as of December 31, 2016 | 4,015 |  |  | 697 |  |  | 4,712 |
Acquisitions and purchase accounting adjustments | — |  |  | 37 |  |  | 37 |
Balance as of December 31, 2017 | $ | 4,015 |  |  | $ | 734 |  |  | $ | 4,749 |
Schedule of intangible assets | Intangible assets at December 31, consist of the following ($ in millions):
|  |  |  |  | Weighted Average Life in Years
| 2017 |  | 2016 |  | 2017 |  | 2016
Purchased contract rights | $ | 1,173 |  |  | $ | 1,171 |  |  | 12.6 |  | 12.6 |
Provider contracts | 274 |  |  | 285 |  |  | 11.9 |  | 10.7 |
Customer relationships | 22 |  |  | 22 |  |  | 8.2 |  | 8.2 |
Trade names | 162 |  |  | 163 |  |  | 9.6 |  | 9.6 |
Developed technologies | 109 |  |  | 110 |  |  | 5.0 |  | 5.0 |
Other Intangibles | 7 |  |  | — |  |  | 2.8 |  | — |
Intangible assets | 1,747 |  |  | 1,751 |  |  | 11.6 |  | 11.5 |
Less accumulated amortization: |  |  |  |  |  |  |
Purchased contract rights | (188 | ) |  | (95 | ) |  |  |  |
Provider contracts | (66 | ) |  | (55 | ) |  |  |  |
Customer relationships | (21 | ) |  | (21 | ) |  |  |  |
Trade names | (34 | ) |  | (17 | ) |  |  |  |
Developed technologies | (40 | ) |  | (18 | ) |  |  |  |
Total accumulated amortization | (349 | ) |  | (206 | ) |  |  |  |
Intangible assets, net | $ | 1,398 |  |  | $ | 1,545 |  |  |  |  |
Schedule of future amortization expenses | Estimated total amortization expense related to intangible assets for each of the five succeeding fiscal years is as follows ($ in millions):
Year |  | Expense
2018 |  | $ | 156 |
2019 |  | 156 |
2020 |  | 154 |
2021 |  | 134 |
2022 |  | 128 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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