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Cover - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Feb. 10, 2025
Jun. 28, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-34674    
Entity Registrant Name Calix, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 68-0438710    
Entity Address, Address Line One 2777 Orchard Parkway    
Entity Address, City or Town San Jose    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 95134    
City Area Code 408    
Local Phone Number 514-3000    
Title of 12(b) Security Common Stock, $0.025 par value    
Trading Symbol CALX    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction Flag false    
Entity Shell Company false    
Entity Public Float     $ 1,510
Entity Common Stock, Shares Outstanding   66,689,039  
Documents Incorporated by Reference
Portions of the registrant’s 2024 annual report and definitive proxy statement for its 2025 annual meeting of stockholders are incorporated by reference in Item 5 of Part II and Items 10, 11, 12, 13 and 14 of Part III.
    
Entity Central Index Key 0001406666    
Amendment Flag false    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY