XML 21 R1.htm IDEA: XBRL DOCUMENT v3.25.0.1
Cover - USD ($)
 12 Months Ended
Jan. 03, 2025
Feb. 04, 2025
Jun. 28, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jan. 03, 2025    
Current Fiscal Year End Date --01-03    
Document Transition Report false    
Entity File Number 001-33072    
Entity Registrant Name Leidos Holdings, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 20-3562868    
Entity Address, Address Line One 1750 Presidents Street,    
Entity Address, City or Town Reston,    
Entity Address, State or Province VA    
Entity Address, Postal Zip Code 20190    
City Area Code 571    
Local Phone Number 526-6000    
Title of 12(b) Security Common stock, par value $.0001 per share    
Trading Symbol LDOS    
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    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 19,549,744,128
Entity Common Stock, Shares Outstanding   131,167,372  
Documents Incorporated by Reference
Portions of Leidos Holdings, Inc.’s definitive Proxy Statement for the 2024 Annual Meeting of Stockholders (”2025 Proxy Statement”) are incorporated by reference in Part III of this Annual Report on Form 10-K.
    
Amendment Flag false    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001336920