Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2021	Feb. 21, 2022	Jun. 30, 2021
Document Information [Line Items]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	RR Donnelley & Sons Company (the “Company,” “RRD,” “our,” “us” or “we”) is filing this Amendment No. 1 on Form 10-K/A (this “Amendment No. 1”) to our Annual Report on Form 10-K for the fiscal year ended December 31, 2021 (the “Form 10-K”), which was filed with the U.S. Securities and Exchange Commission (the “SEC”) on February 24, 2022, to provide the information required by Part III of Form 10-K. This information was previously omitted from the Form 10-K in reliance on General Instruction G(3) to Form 10-K, which permits the information in Part III to be incorporated in the Form 10-K by reference from our definitive proxy statement if such statement is filed no later than 120 days after end of our fiscal year. We are filing this Amendment No. 1 to include Part III information in our Form 10-K because we will not file a definitive proxy statement containing this information within 120 days after the end of the fiscal year covered by the Form 10-K. This Amendment No. 1 amends and restates in their entirety Items 10, 11, 12, 13 and 14 of Part III of the Form 10-K. In addition, as required by Section 302 of the Sarbanes-Oxley Act of 2002 and Rule 12b-15 of the Securities Exchange Act of 1934 (the “Exchange Act”), as amended, updated certifications of the Company’s principal executive officer and principal financial officer are included as Exhibits 31.3 and 31.4 hereto. Because no financial statements have been included in this Amendment No. 1 and this Amendment No. 1 does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. We are not including the certifications under Section 906 of the Sarbanes-Oxley Act of 2002 as no financial statements are being filed with this Amendment No. 1. No other changes have been made to the Form 10-K other than those described above. This Amendment No. 1 does not reflect subsequent events occurring after the original filing date of the Form 10-K or modify or update in any way the financial statements, consents or any other items disclosures made in the Form 10-K in any way other than as required to reflect the amendments discussed above. Accordingly, this Amendment No. 1 should be read in conjunction with the Form 10-K and the Company’s other filings with the SEC subsequent to the filing of the Form 10-K.
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Registrant Name	RR Donnelley & Sons Co
Entity Central Index Key	0000029669
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		75,212,238
Entity Public Float			$ 440,834,717
Entity Interactive Data Current	Yes
Entity File Number	1-4694
Entity Tax Identification Number	36-1004130
Entity Address, Address Line One	35 West Wacker Drive
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60601
City Area Code	312
Local Phone Number	326-8000
Document Annual Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	DE
Auditor Name	DELOITTE & TOUCHE LLP
Auditor Location	Chicago, IL
Auditor Firm ID	34
Documents Incorporated by Reference	Documents Incorporated By Reference Item 10 of Part III of this Form 10-K/A incorporates by reference to the registrant’s Form 10-K for the fiscal year ended December 31, 2021, filed on February 24, 2022. Item 12 of Part III of this Form 10-K/A incorporates by reference to the registrant’s Form 8-K filed on December 17, 2021.
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	RRD
Security Exchange Name	NYSE
Preferred Stock
Document Information [Line Items]
Title of 12(b) Security	Preferred Stock Purchase Rights
No Trading Symbol Flag	true
Security Exchange Name	NYSE

RR Donnelley & Sons Co 10-K/A