Affordable Care Act - Narrative (Details) $ in Millions	9 Months Ended
Sep. 30, 2026 USD ($)
Affordable Care Act [Abstract]
Risk adjustment, net payable	$ 541
Risk adjustment and reinsurance pre-tax expense	$ 480

Affordable Care Act, Risk Adjustment, Net Payable Increase (Decrease)

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration