XML 31 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 24, 2020
Jun. 30, 2019
Entity Registrant Name BIO-RAD LABORATORIES, INC.    
Document Type 10-K    
Document Period End Date Dec. 31, 2019    
Amendment Flag false    
Entity Central Index Key 0000012208    
Current Fiscal Year End Date --12-31    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
Entity Filer Category Large Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Document Annual Report true    
Document Transition Report false    
Entity File Number 1-7928    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 94-1381833    
Entity Address, Address Line One 1000 Alfred Nobel Drive,    
Entity Address, City or Town Hercules,    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94547    
City Area Code (510)    
Local Phone Number 724-7000     
Entity Interactive Data Current Yes    
Common Class A [Member]      
Entity Common Stock, Shares Outstanding   24,839,715  
Entity Public Float     $ 6,613,310,960
Title of 12(b) Security Class A Common Stock Par Value $0.0001 per share    
Trading Symbol BIO    
Security Exchange Name NYSE    
Common Class B [Member]      
Entity Common Stock, Shares Outstanding   5,085,621  
Entity Public Float     $ 67,954,565
Title of 12(b) Security Class B Common Stock Par Value $0.0001 per share    
Trading Symbol BIOb    
Security Exchange Name NYSE