Reserve for Claims and Performance-Based Arrangements (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balance, beginning of period	$ 318,705	$ 404,048
Incurred health care costs:
Current year to date period	219,346	374,879
Prior year to date period	(13,354)	(15,186)
Total claims incurred	205,992	359,693
Claims paid related to:
Current year to date period	(102,655)	(146,399)
Prior year to date period	(88,200)	(248,703)
Total claims paid	(190,855)	(395,102)
Balance, end of period	$ 333,842	$ 368,639

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.

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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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Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred and costs incurred in the claim settlement process.

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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 payments to settle insured claims and pay costs incurred in the claims settlement process.

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