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        Taxonomy & unit
      
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        us-gaap: shares
      
      
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        Description
      
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        Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
      
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        Summary
      
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        Credit Acceptance Corp quarterly/annual Weighted Average Number of Shares Outstanding, Basic history and growth rate from 2010 to 2024.- Credit Acceptance Corp Weighted Average Number of Shares Outstanding, Basic for the quarter ending September 30, 2025 was 11.2M shares, a 8.36% decline year-over-year.
- Credit Acceptance Corp annual Weighted Average Number of Shares Outstanding, Basic for 2024 was 12.3M shares, a 4.87% decline from 2023.
- Credit Acceptance Corp annual Weighted Average Number of Shares Outstanding, Basic for 2023 was 13M shares, a 4.5% decline from 2022.
- Credit Acceptance Corp annual Weighted Average Number of Shares Outstanding, Basic for 2022 was 13.6M shares, a 15.7% decline from 2021.
 
 
 
  
  Weighted Average Number of Shares Outstanding, Basic, Annual (shares)
  
    
  Weighted Average Number of Shares Outstanding, Basic, YoY Annual Growth (%)