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Revenue from Contracts with Customers Accounted for in Accordance with ASC 606 - Summary of Disaggregation of Revenue from Contracts with Customers Accounted Under ASC 606 (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | $ 79 | $ 127 | $ 261 | $ 391
Federal Government [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 2 | 4 | 6 | 19
Guarantor Agencies [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue |  | 5 | 1 | 13
State and Local Government [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 27 | 56 | 95 | 144
Tolling Authorities [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 18 | 15 | 48 | 42
Hospitals and Other Healthcare Providers [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 32 | 47 | 111 | 173
Federal Education Loans [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue |  | 5 | 1 | 14
Federal Education Loans [Member] | Federal Government [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue |  |  |  | 1
Federal Education Loans [Member] | Guarantor Agencies [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue |  | 5 | 1 | 13
Business Processing [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 79 | 122 | 260 | 377
Business Processing [Member] | Federal Government [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 2 | 4 | 6 | 18
Business Processing [Member] | State and Local Government [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 27 | 56 | 95 | 144
Business Processing [Member] | Tolling Authorities [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 18 | 15 | 48 | 42
Business Processing [Member] | Hospitals and Other Healthcare Providers [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 32 | 47 | 111 | 173
Federal Education Loan Asset Recovery Services [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue |  | 5 | 1 | 14
Federal Education Loan Asset Recovery Services [Member] | Federal Education Loans [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue |  | 5 | 1 | 14
Government Services [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 47 | 75 | 149 | 204
Government Services [Member] | Business Processing [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 47 | 75 | 149 | 204
Healthcare Services [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | 32 | 47 | 111 | 173
Healthcare Services [Member] | Business Processing [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total Revenue | $ 32 | $ 47 | $ 111 | $ 173

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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