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Income Taxes - Schedule of Tax Effects of Temporary Differences Which Give Rise to Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
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Deferred tax assets: |  |
Medical claims liability | $ 178 | $ 178
Nondeductible liabilities | 69 | 81
Net operating loss and other carryforwards | 106 | 70
Compensation accruals | 105 | 93
Premium and trade receivables | 88 | 72
Operating lease liability | 196 | 231
Unrealized gain/loss | 13 | 153
Software development costs | 178 | 246
Other | 48 | 92
Deferred tax assets | 981 | 1,216
Valuation allowance | (67) | (77)
Net deferred tax assets | 914 | 1,139
Deferred tax liabilities: |  |
Goodwill and intangible assets | 1,376 | 1,518
Fixed assets | 198 | 135
Investments in subsidiaries and joint ventures (outside basis) | 68 | 0
Right-of-use asset | 78 | 88
Other | 27 | 82
Deferred tax liabilities | 1,747 | 1,823
Net deferred tax liabilities | $ (833) | $ (684)

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