| Cover Page | Oct. 29, 2019 |
| Cover page. | |
| Entity Central Index Key | 0001481792 |
| Amendment Flag | false |
| Document Type | 8-K |
| Document Period End Date | Oct. 29, 2019 |
| Entity Registrant Name | Quad/Graphics, Inc. |
| Entity Incorporation, State or Country Code | WI |
| Entity File Number | 001-34806 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, par value $0.025 per share |
| Trading Symbol | QUAD |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
