v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 06, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-38477  
Entity Registrant Name BIGLARI HOLDINGS INC.  
Entity Incorporation, State or Country Code IN  
Entity Tax Identification Number 82-3784946  
Entity Address, Address Line One 19100 Ridgewood Parkway,  
Entity Address, Address Line Two Suite 1200  
Entity Address, City or Town San Antonio,  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 78259  
City Area Code 210  
Local Phone Number 344-3400  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Central Index Key 0001726173  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Common Class A    
Document Information [Line Items]    
Title of 12(b) Security Class A Common Stock, no par value  
Trading Symbol BH.A  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   214,482
Common Class A | NYSE TEXAS, INC.    
Document Information [Line Items]    
Title of 12(b) Security Class A Common Stock, no par value  
Trading Symbol BH.A  
Security Exchange Name NYSETX  
Common Class B    
Document Information [Line Items]    
Title of 12(b) Security Class B Common Stock, no par value  
Trading Symbol BH  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   2,112,068
Common Class B | NYSE TEXAS, INC.    
Document Information [Line Items]    
Title of 12(b) Security Class B Common Stock, no par value  
Trading Symbol BH  
Security Exchange Name NYSETX