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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnotes to this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 4,195 vested restricted stock units that were granted under the Company's Incentive Compensation Plan."}],"balance_after":11363,"source":{"system":"sec-edgar","filing":"0000885550-21-000144","document":"wf-form4_163614322470760.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000144/wf-form4_163614322470760.xml","form_type":"4"}},{"id":2523705,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35278,"kind":"person","name":"LUM JONATHAN","position":1,"cik":"0001777743","reported_name":"LUM JONATHAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2021-11-05T20:14:04.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":300,"price":665.85,"value":199755.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnotes to this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 4,195 vested restricted stock units that were granted under the Company's Incentive Compensation Plan."}],"balance_after":11905,"source":{"system":"sec-edgar","filing":"0000885550-21-000144","document":"wf-form4_163614322470760.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000144/wf-form4_163614322470760.xml","form_type":"4"}},{"id":2523704,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE 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Plan"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"Shares were held in the Credit Acceptance Stock Fund of the Credit Acceptance Corporation 401(k) Profit Sharing Plan and Trust until September 7, 2021, according to the Plan trustee."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000885550-21-000144","document":"wf-form4_163614322470760.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000144/wf-form4_163614322470760.xml","form_type":"4"}},{"id":2887043,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35278,"kind":"person","name":"LUM JONATHAN","position":1,"cik":"0001777743","reported_name":"LUM JONATHAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common 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Each restricted stock unit represents and has a value equal to one share of common stock of Credit Acceptance Corporation. Shares will be distributed to Mr. Lum on January 30, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 4,254 vested restricted stock units that were granted under the Company's Incentive Compensation Plan."}],"balance_after":12514,"source":{"system":"sec-edgar","filing":"0000885550-21-000025","document":"wf-form4_161230063660912.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000025/wf-form4_161230063660912.xml","form_type":"4"}},{"id":2926576,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35278,"kind":"person","name":"LUM JONATHAN","position":1,"cik":"0001777743","reported_name":"LUM JONATHAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Employee Stock Option (right to buy)","published_at":"2021-01-04T21:12:56.000Z","date":"2020-12-30","kind":"grant","acquired":true,"shares":40000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option vests in four equal annual installments beginning on December 30, 2021, which is the first anniversary of the date on which the option was granted."}],"balance_after":40000,"derivative":{"exercise_price":333.94,"expiration_date":"2026-12-30","underlying":"Common Stock","underlying_shares":40000},"source":{"system":"sec-edgar","filing":"0000885550-21-000004","document":"wf-form4_160979476344638.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555021000004/wf-form4_160979476344638.xml","form_type":"4"}},{"id":3297189,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35278,"kind":"person","name":"LUM JONATHAN","position":1,"cik":"0001777743","reported_name":"LUM JONATHAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2020-01-31T21:50:49.000Z","date":"2020-01-29","kind":"tax_withholding","acquired":false,"shares":46,"price":461.53,"value":21230.38,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld to satisfy tax withholding obligations in conjunction with the vesting of restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes 2,954 vested restricted stock units that were granted under the Company's Incentive Compensation Plan."}],"balance_after":11214,"source":{"system":"sec-edgar","filing":"0000885550-20-000018","document":"wf-form4_158050743149497.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555020000018/wf-form4_158050743149497.xml","form_type":"4"}},{"id":3297188,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":35278,"kind":"person","name":"LUM JONATHAN","position":1,"cik":"0001777743","reported_name":"LUM JONATHAN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2020-01-31T21:50:49.000Z","date":"2020-01-29","kind":"grant","acquired":true,"shares":1000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the vesting of performance-based restricted stock units granted under the Company's Incentive Compensation Plan. Each restricted stock unit represents and has a value equal to one share of common stock of Credit Acceptance Corporation. Shares will be distributed to Mr. Lum on January 30, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 3,000 vested restricted stock units that were granted under the Company's Incentive Compensation Plan."}],"balance_after":11260,"source":{"system":"sec-edgar","filing":"0000885550-20-000018","document":"wf-form4_158050743149497.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555020000018/wf-form4_158050743149497.xml","form_type":"4"}}]}