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Business Combinations - Narrative (Details) $ in Millions |  |  |  | 12 Months Ended
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Oct. 01, 2022 USD ($) | Jan. 01, 2022 USD ($) | Oct. 25, 2021 USD ($) | Dec. 31, 2022 USD ($) combination
Business Acquisition [Line Items] |  |  |  |
Number of business combinations | combination |  |  |  | 2
Acquisition costs |  |  |  | $ 2
AgeWell New York |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Purchase price | $ 134 |  |  |
Goodwill | 87 |  |  |
AgeWell New York | Member list |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired membership with a preliminary fair value | $ 47 |  |  |
Cigna Corporation's Texas Medicaid and Medicare-Medicaid Plan |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Purchase price |  | $ 60 |  |
Goodwill |  | 25 |  |
Cigna Corporation's Texas Medicaid and Medicare-Medicaid Plan | Member list |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired membership with a preliminary fair value |  | $ 35 |  |
Affinity Health Plan, Inc |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Purchase price |  |  | $ 176 |
Goodwill |  |  |  | 21
Payable |  |  |  | 12
Receivables |  |  |  | $ 4

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- Definition The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10(c)(7)(ii)) -URI https://asc.fasb.org/extlink&oid=126954596&loc=d3e511914-122862 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10(c)(3)(ii)(A)) -URI https://asc.fasb.org/extlink&oid=126954596&loc=d3e511914-122862 + Details
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI https://asc.fasb.org/extlink&oid=123586518&loc=d3e961-128460 + Details
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