Equity - Schedule of Equity Activity (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Equity [Line Items]
Beginning Balance			$ (202.9)
Cumulative impact of adopting Topic 606, net of tax			12.9
Net income	$ 34.8	$ (7.8)	12.9	$ 19.1
Other comprehensive loss	(6.8)	$ 16.6	(25.2)	$ (70.4)
Share-based compensation			6.4
Issuance of share-based awards, net of withholdings and other			(0.8)
Cash dividends paid			(21.8)
Distributions to noncontrolling interests			(1.0)
Ending Balance	(219.5)		(219.5)
RRD Stockholders' Equity
Equity [Line Items]
Beginning Balance			(217.6)
Cumulative impact of adopting Topic 606, net of tax			12.9
Net income			11.7
Other comprehensive loss			(24.7)
Share-based compensation			6.4
Issuance of share-based awards, net of withholdings and other			(0.8)
Cash dividends paid			(21.8)
Distributions to noncontrolling interests			0.0
Ending Balance	(233.9)		(233.9)
Noncontrolling Interest
Equity [Line Items]
Beginning Balance			14.7
Cumulative impact of adopting Topic 606, net of tax			0.0
Net income			1.2
Other comprehensive loss			(0.5)
Share-based compensation			0.0
Issuance of share-based awards, net of withholdings and other			0.0
Cash dividends paid			0.0
Distributions to noncontrolling interests			(1.0)
Ending Balance	$ 14.4		$ 14.4