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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2019
Jan. 31, 2020
Jun. 30, 2019
Entity Information [Line Items]      
Entity Central Index Key 0001481792    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-34806    
Entity Registrant Name QUAD/GRAPHICS, INC.    
Entity Incorporation, State or Country Code WI    
Entity Tax Identification Number 39-1152983    
Entity Address, Address Line One N61 W23044 Harry’s Way    
Entity Address, City or Town Sussex    
Entity Address, State or Province WI    
Entity Address, Postal Zip Code 53089-3995    
City Area Code 414    
Local Phone Number 566-6000    
Title of 12(b) Security Class A Common Stock, par value $0.025 per share    
Trading Symbol QUAD    
Security Exchange Name NYSE    
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    
Entity Shell Company false    
Entity Public Float     $ 245,293,629
Documents Incorporated by Reference
Portions of the Proxy Statement for the registrant’s 2020 Annual Meeting of Shareholders are incorporated by reference into Part III of this Form 10-K.
    
Common Class A      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   40,404,566  
Common Class B      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   13,556,858  
Common Class C      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   0