XML 26 R1.htm IDEA: XBRL DOCUMENT v3.25.0.1
Cover Page and DEI - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2024
Jan. 15, 2025
Jun. 30, 2024
Document Information [Line Items]      
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 1-38494    
Entity Registrant Name Arcosa, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 82-5339416    
Entity Address, Address Line One 500 N. Akard Street, Suite 400    
Entity Address, City or Town Dallas,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75201    
City Area Code 972    
Local Phone Number 942-6500    
Title of 12(b) Security Common Stock ($0.01 par value)    
Trading Symbol ACA    
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 Public Float     $ 4.1
Entity Common Stock, Shares Outstanding   48,776,021  
Documents Incorporated by Reference The information required by Part III of this report, to the extent not set forth herein, is incorporated by reference from the registrant's definitive 2025 Proxy Statement.    
Entity Central Index Key 0001739445    
Amendment Flag false    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Document Financial Statement Error Correction [Flag] false