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Summary of Significant Accounting Policies - Schedule Of Amortization Period For Intangible Assets (Details) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 11 years 10 months 15 days | 11 years 7 months 6 days
Purchased contract rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 12 years 7 months 6 days | 12 years 7 months 6 days
Purchased contract rights | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 5 years |
Purchased contract rights | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 15 years |
Provider contracts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 12 years 3 months | 11 years 10 months 24 days
Provider contracts | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 4 years |
Provider contracts | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 15 years |
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 10 years 10 months 15 days | 8 years 2 months 12 days
Customer relationships | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 3 years |
Customer relationships | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 15 years |
Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 15 years 2 months | 9 years 7 months 6 days
Trade names | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 7 years |
Trade names | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 20 years |
Developed technologies |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 5 years 2 months | 5 years
Developed technologies | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 2 years |
Developed technologies | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, amortization period | 7 years |

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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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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