v3.8.0.1

Goodwill and Intangible Assets - Schedule Of Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets | $ 1,747 | $ 1,751 |
Weighted average life in years | 11 years 7 months 6 days | 11 years 6 months |
Total accumulated amortization | $ (349) | $ (206) |
Intangible assets, net | 1,398 | 1,545 |
Amortization expense | 156 | 147 | $ 24
Purchased contract rights |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets | $ 1,173 | $ 1,171 |
Weighted average life in years | 12 years 7 months 6 days | 12 years 7 months 6 days |
Total accumulated amortization | $ (188) | $ (95) |
Provider contracts |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets | $ 274 | $ 285 |
Weighted average life in years | 11 years 10 months 24 days | 10 years 8 months 12 days |
Total accumulated amortization | $ (66) | $ (55) |
Customer relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets | $ 22 | $ 22 |
Weighted average life in years | 8 years 2 months 12 days | 8 years 2 months 12 days |
Total accumulated amortization | $ (21) | $ (21) |
Trade names |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets | $ 162 | $ 163 |
Weighted average life in years | 9 years 7 months 6 days | 9 years 7 months 6 days |
Total accumulated amortization | $ (34) | $ (17) |
Developed technologies |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets | $ 109 | $ 110 |
Weighted average life in years | 5 years | 5 years |
Total accumulated amortization | $ (40) | $ (18) |
Other Intangibles |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets | $ 7 | $ 0 |
Weighted average life in years | 2 years 9 months 18 days |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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