Cover Page - USD ($)
$ in Millions
 12 Months Ended
Jan. 01, 2022
Mar. 04, 2022
Jul. 03, 2021
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jan. 01, 2022    
Current Fiscal Year End Date --01-01    
Document Transition Report false    
Entity File Number 0-19848    
Entity Registrant Name FOSSIL GROUP, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 75-2018505    
Entity Address, Address Line One 901 S. Central Expressway,    
Entity Address, City or Town Richardson,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75080    
City Area Code 972    
Local Phone Number 234-2525    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 439.5
Entity Common Stock, Shares Outstanding (in shares)   52,145,738  
Documents Incorporated by Reference Portions of the registrant's proxy statement to be furnished to shareholders in connection with its 2022 Annual Meeting of Stockholders are incorporated by reference in Part III, Items 10-14 of this Annual Report on Form 10-K.    
Entity Central Index Key 0000883569    
Amendment Flag false    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, $0.01 par value    
Trading Symbol FOSL    
Security Exchange Name NASDAQ    
Senior notes      
Document Information [Line Items]      
Title of 12(b) Security 7.00% Senior Notes due 2026    
Trading Symbol FOSLL    
Security Exchange Name NASDAQ