v3.24.1.u1
Intangible Assets, Goodwill and Other (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 29, 2024
Feb. 28, 2023
Internally developed software    
Schedule of Intangible Assets (Finite-Lived and Indefinite-Lived) [Line Items]    
Finite-Lived Intangible Assets, Gross $ 52,900 $ 52,900
Finite-Lived Intangible Assets, Accumulated Amortization (20,782) (13,225)
Finite-Lived Intangible Assets, Net 32,118 39,675
Customer Relationships    
Schedule of Intangible Assets (Finite-Lived and Indefinite-Lived) [Line Items]    
Finite-Lived Intangible Assets, Gross 133,200 133,200
Finite-Lived Intangible Assets, Accumulated Amortization (21,547) (13,712)
Finite-Lived Intangible Assets, Net 111,653 119,488
Goodwill 141,258 141,258
Indefinite-lived Intangible Assets (Excluding Goodwill) 31,900 31,900
Intangible Assets, Gross (Excluding Goodwill) 218,000 218,000
Finite-Lived Intangible Assets, Accumulated Amortization (42,329) (26,937)
Intangible Assets, Net (Excluding Goodwill) 175,671 191,063
Amortization of Intangible Assets 15,400 $ 15,400
Finite-Lived Intangible Asset, Expected Amortization, Year One 15,400  
Finite-Lived Intangible Asset, Expected Amortization, Year Two 15,400  
Finite-Lived Intangible Asset, Expected Amortization, Year Three 15,400  
Finite-Lived Intangible Asset, Expected Amortization, Year Five 9,700  
Finite-Lived Intangible Asset, Expected Amortization, Year Four 15,400  
CarMax Sales Operations    
Goodwill [Line Items]    
Goodwill 98,900  
Edmunds    
Goodwill [Line Items]    
Goodwill $ 42,400