Overview and Basis of Presentation - Narrative (Detail) $ in Millions			3 Months Ended	12 Months Ended
	Mar. 28, 2017 shares	Oct. 01, 2016 Entity shares	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Overview And Basis Of Presentation [Line Items]
Percentage of distribution of common shares during spinoff		80.75%
Donnelley Financial Solutions
Overview And Basis Of Presentation [Line Items]
Percentage of distribution of common shares during spinoff		80.75%
RRD
Overview And Basis Of Presentation [Line Items]
Ownership percentage	19.25%	19.25%
Ownership percentage in Donnelley Financial solutions by related party		19.25%
Number of subsidiary shares sold by parent company	6,200,000
RR Donnelley
Overview And Basis Of Presentation [Line Items]
Number of entities resulted from spinoff of an entity | Entity		3
Number of share distributed to each stockholder in spinoff transaction in Donnelley Financial solutions by related party		0.125
Number of share distributed to each stockholder in spinoff transaction		0.125
ASU 2017-07
Overview And Basis Of Presentation [Line Items]
Reclassification of net pension income from selling, general and administrative expenses to investment and other income | $			$ 11
Reclassification of net pension income upon adoption of accounting standard | $				$ 46	$ 45