XML 30 R1.htm IDEA: XBRL DOCUMENT v3.21.2
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Oct. 01, 2021
Nov. 12, 2021
Apr. 02, 2021
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Oct. 01, 2021    
Document Transition Report false    
Entity File Number 1-7463    
Entity Registrant Name Jacobs Engineering Group Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 95-4081636    
Entity Address, Address Line One 1999 Bryan Street    
Entity Address, Address Line Two Suite 1200    
Entity Address, City or Town Dallas    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75201    
City Area Code 214    
Local Phone Number 583 – 8500    
Title of 12(b) Security Common Stock    
Trading Symbol J    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
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    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding (in shares)   128,948,685  
Entity Public Float     $ 16.9
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Registrant’s definitive proxy statement to be issued in connection with its 2022 annual meeting of shareholders are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated.
    
Entity Central Index Key 0000052988    
Current Fiscal Year End Date --10-01    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Amendment Flag false