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Reserves for Claims and Performance-Based Arrangements (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Beginning balance	$ 171,294	$ 178,827
Incurred costs related to current period	246,955	228,012
Incurred costs related to prior period	22,438	6,508
Paid costs related to current period	201,508	94,180
Paid costs related to prior period	101,145	92,065
Change during the year	(33,260)	48,275
Impact of consolidation on reserves for claims and performance-based arrangements	0	0
Other adjustments	(12,074)	11,003
Ending balance	125,960	238,105
Evolent Health Services
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Beginning balance	25,618	56,295
Incurred costs related to current period	0	8,669
Incurred costs related to prior period	(10,289)	6,293
Paid costs related to current period	(1,239)	20,801
Paid costs related to prior period	436	20,673
Change during the year	(9,486)	(26,512)
Impact of consolidation on reserves for claims and performance-based arrangements	0	0
Other adjustments	0	3,721
Ending balance	16,132	33,504
Clinical Solutions
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Beginning balance	145,676	122,532
Incurred costs related to current period	246,955	219,343
Incurred costs related to prior period	32,727	215
Paid costs related to current period	202,747	73,379
Paid costs related to prior period	100,709	71,392
Change during the year	(23,774)	74,787
Impact of consolidation on reserves for claims and performance-based arrangements	0	0
Other adjustments	(12,074)	7,282
Ending balance	$ 109,828	$ 204,601

X

- Definition

Current Year Claims And Claims Adjustment Expense, Including Cost Of Goods And Services Sold, Excluding Depreciation And Amortization

+ References

No definition available.

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- Definition

The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

+ References

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Amount of increase (decrease) in the cost of settling unpaid claims after deduction of reinsurance recoveries related to the acquisition of a business. Includes, but is not limited to, claims which have been incurred but not reported.

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Amount, after effects of reinsurance, of payments to settle claims incurred in the current period and related claims settlement costs.

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Amount, after effects of reinsurance, of payments to settle claims incurred in prior periods and related claims settlement costs.

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Sum of adjustments to the estimated reserve for unpaid claims and claims adjustment expense.

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Amount, after effects of reinsurance, of increase (decrease) in the liability for unpaid claims and claims adjustment expense.

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Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs.

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