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Basis of Presentation, Summary of Significant Accounting Policies and Change in Accounting Principles - Intangible Assets, Net (Details)	6 Months Ended
	Jun. 30, 2021
Corporate trade name | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Corporate trade name | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	20 years
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	25 years
Technology
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years
Provider network contracts | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	4 years
Provider network contracts | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	5 years

X

- 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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