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Revenue from Contracts with Customers Accounted for in Accordance with ASC 606 (Tables) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Summary of Disaggregation of Revenue from Contracts with Customers Accounted Under ASC 606 | The following tables illustrate the disaggregation of revenue from contracts accounted for under ASC 606 with customers according to service type and client type by reportable operating segment. Revenue by Service Type
|  | Years Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
(Dollars in millions) |  | Federal Education Loans |  |  | Business Processing |  |  | Total Revenue |  |  | Federal Education Loans |  |  | Business Processing |  |  | Total Revenue |  |  | Federal Education Loans |  |  | Business Processing |  |  | Total Revenue |
Federal Education Loan asset recovery services |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2 |  |  | $ | — |  |  | $ | 2 |  |  | $ | 19 |  |  | $ | — |  |  | $ | 19 |
Government services |  |  | — |  |  |  | 200 |  |  |  | 200 |  |  |  | — |  |  |  | 187 |  |  |  | 187 |  |  |  | — |  |  |  | 258 |  |  |  | 258 |
Healthcare services |  |  | — |  |  |  | 121 |  |  |  | 121 |  |  |  | — |  |  |  | 143 |  |  |  | 143 |  |  |  | — |  |  |  | 230 |  |  |  | 230 |
Total |  | $ | — |  |  | $ | 321 |  |  | $ | 321 |  |  | $ | 2 |  |  | $ | 330 |  |  | $ | 332 |  |  | $ | 19 |  |  | $ | 488 |  |  | $ | 507 |
Revenue by Client Type
|  | Years Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
(Dollars in millions) |  | Federal Education Loans |  |  | Business Processing |  |  | Total Revenue |  |  | Federal Education Loans |  |  | Business Processing |  |  | Total Revenue |  |  | Federal Education Loans |  |  | Business Processing |  |  | Total Revenue |
Federal government |  | $ | — |  |  | $ | 62 |  |  | $ | 62 |  |  | $ | — |  |  | $ | 8 |  |  | $ | 8 |  |  | $ | 1 |  |  | $ | 20 |  |  | $ | 21 |
Guarantor agencies |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2 |  |  |  | — |  |  |  | 2 |  |  |  | 18 |  |  |  | — |  |  |  | 18 |
Other institutions |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
State and local government |  |  | — |  |  |  | 68 |  |  |  | 68 |  |  |  | — |  |  |  | 116 |  |  |  | 116 |  |  |  | — |  |  |  | 183 |  |  |  | 183 |
Tolling authorities |  |  | — |  |  |  | 70 |  |  |  | 70 |  |  |  | — |  |  |  | 63 |  |  |  | 63 |  |  |  | — |  |  |  | 55 |  |  |  | 55 |
Hospitals and other healthcare providers |  |  | — |  |  |  | 121 |  |  |  | 121 |  |  |  | — |  |  |  | 143 |  |  |  | 143 |  |  |  | — |  |  |  | 230 |  |  |  | 230 |
Total |  |  | — |  |  |  | 321 |  |  |  | 321 |  |  |  | 2 |  |  |  | 330 |  |  |  | 332 |  |  |  | 19 |  |  |  | 488 |  |  |  | 507 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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- References No definition available. + Details
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