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Business Combinations - Narrative (Details) $ in Millions		9 Months Ended
	Sep. 01, 2023 USD ($)	Sep. 30, 2023 combination
Medicaid and Medicare Segment
Business Acquisition, Contingent Consideration [Line Items]
Number of business combinations | combination		1
My Choice Wisconsin
Business Acquisition, Contingent Consideration [Line Items]
Purchase consideration	$ 74
Goodwill	$ 126
Goodwill deduction percentage	100
My Choice Wisconsin | Medicaid Segment
Business Acquisition, Contingent Consideration [Line Items]
Goodwill	$ 95
My Choice Wisconsin | Medicare Segment
Business Acquisition, Contingent Consideration [Line Items]
Goodwill	$ 31

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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