v3.25.2
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2025
Jul. 25, 2025
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Trading Symbol DFIN  
Entity Registrant Name Donnelley Financial Solutions, Inc.  
Entity Central Index Key 0001669811  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   27,494,777
Entity Shell Company false  
Title of 12(b) Security Common Stock (Par Value $0.01)  
Security Exchange Name NYSE  
Entity File Number 1-37728  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 36-4829638  
Entity Address, Address Line One 391 Steel Way  
Entity Address, City or Town Lancaster  
Entity Address, State or Province PA  
Entity Address, Postal Zip Code 17601  
City Area Code 800  
Local Phone Number 823-5304  
Document Quarterly Report true  
Document Transition Report false