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Reserves for Claims and Performance-Based Arrangements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease) [Abstract]
Beginning balance	$ 171,294	$ 178,827
Incurred costs related to current period	102,664	108,287
Incurred costs related to prior period	6,511	4,175
Paid costs related to current period	47,724	41,925
Paid costs related to prior period	59,491	48,253
Change during the year	1,960	22,284
Impact of consolidation on reserves for claims and performance-based arrangements	0	0
Other adjustments	(9,016)	6,882
Ending balance	164,238	207,993
Evolent Health Services
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease) [Abstract]
Beginning balance	25,618	122,532
Incurred costs related to current period	0	104,098
Incurred costs related to prior period	(8,465)	24
Paid costs related to current period	0	30,761
Paid costs related to prior period	(483)	38,053
Change during the year	(7,982)	35,308
Impact of consolidation on reserves for claims and performance-based arrangements	0	0
Other adjustments	0	2,658
Ending balance	17,636	160,498
Clinical Solutions
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease) [Abstract]
Beginning balance	145,676	56,295
Incurred costs related to current period	102,664	4,189
Incurred costs related to prior period	14,976	4,151
Paid costs related to current period	47,724	11,164
Paid costs related to prior period	59,974	10,200
Change during the year	9,942	(13,024)
Impact of consolidation on reserves for claims and performance-based arrangements	0	0
Other adjustments	(9,016)	4,224
Ending balance	$ 146,602	$ 47,495

X

- Definition

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

+ References

No definition available.

+ Details

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 3
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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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- Definition

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

+ References

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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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.

+ References

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