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Segments (Tables) | 12 Months Ended
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Dec. 31, 2022
Segment Reporting [Abstract] |
Schedule of operating segment information | The following table presents total revenue by segment. Inter-segment revenue was insignificant for all periods presented.
| Year Ended December 31,
| 2022 |  | 2021 |  | 2020
| (In millions)
Total revenue: |  |  |  |  |
Medicaid | $ | 25,783 |  |  | $ | 21,231 |  |  | $ | 15,217 |
Medicare | 3,824 |  |  | 3,379 |  |  | 2,529 |
Marketplace | 2,296 |  |  | 3,091 |  |  | 1,677 |
Other | 71 |  |  | 70 |  |  | — |
Consolidated | $ | 31,974 |  |  | $ | 27,771 |  |  | $ | 19,423 |
The following table reconciles margin by segment to consolidated income before income tax expense:
| Year Ended December 31,
| 2022 |  | 2021 |  | 2020
| (In millions)
Margin: |  |  |  |  |
Medicaid | $ | 2,981 |  |  | $ | 2,322 |  |  | $ | 1,804 |
Medicare | 437 |  |  | 430 |  |  | 351 |
Marketplace | 290 |  |  | 399 |  |  | 324 |
Other | 11 |  |  | 14 |  |  | — |
Total margin | 3,719 |  |  | 3,165 |  |  | 2,479 |
Add: other operating revenues (1) | 1,020 |  |  | 846 |  |  | 1,124 |
Less: other operating expenses (2) | (3,566) |  |  | (2,991) |  |  | (2,525) |
Operating income | 1,173 |  |  | 1,020 |  |  | 1,078 |
Less: other expenses, net | 110 |  |  | 145 |  |  | 117 |
Income before income tax expense | $ | 1,063 |  |  | $ | 875 |  |  | $ | 961 |
______________________ (1)Other operating revenues include premium tax revenue, health insurer fees reimbursed, Marketplace risk corridor judgment, investment income and other revenue. (2)Other operating expenses include general and administrative expenses, premium tax expenses, health insurer fees, depreciation and amortization, impairment, and other costs.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 + Details
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