Equity - Schedule of Equity Activity (Detail) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Equity [Line Items]
Beginning Balance	$ (416.6)	$ (370.3)	$ (250.0)	$ (245.4)	$ (370.3)	$ (245.4)
Net (loss) income	(57.2)	(12.9)	(7.4)	(8.5)	(70.1)	(15.9)
Other comprehensive (loss) income	6.2	(31.2)	(2.5)	1.6	(25.0)	(0.9)
Share-based compensation	1.8	1.4	3.3	3.4
Issuance of share-based awards, net of withholdings and other	(0.1)	(0.5)		(0.9)
Cash dividends paid		(2.1)	(2.2)	(2.1)
Spinoff adjustments			(12.0)
Cumulative impact of adopting ASU, net of tax	(2,409.4)				(2,409.4)		$ (2,336.8)
Distributions to noncontrolling interests		(0.7)		(0.7)
Ending Balance	(465.9)	(416.6)	(270.8)	(250.0)	(465.9)	(270.8)
Cumulative Effect Period of Adoption Adjustment | Revision of Prior Period Adjustment | ASU 2016-03
Equity [Line Items]
Cumulative impact of adopting ASU, net of tax		(0.3)
Cumulative Effect Period of Adoption Adjustment | Revision of Prior Period Adjustment | ASU 2016-02
Equity [Line Items]
Cumulative impact of adopting ASU, net of tax				2.6
Common Stock
Equity [Line Items]
Beginning Balance	0.9	0.9	0.9	0.9	0.9	0.9
Ending Balance	0.9	0.9	0.9	0.9	0.9	0.9
Additional Paid-in Capital
Equity [Line Items]
Beginning Balance	3,267.1	3,348.0	3,352.7	3,404.0	3,348.0	3,404.0
Share-based compensation	1.8	1.4	3.3	3.4
Issuance of share-based awards, net of withholdings and other	(7.7)	(82.3)	(0.5)	(54.7)
Ending Balance	3,261.2	3,267.1	3,355.5	3,352.7	3,261.2	3,355.5
Treasury Stock
Equity [Line Items]
Beginning Balance	(1,137.8)	(1,219.6)	(1,231.7)	(1,285.5)	(1,219.6)	(1,285.5)
Issuance of share-based awards, net of withholdings and other	7.6	81.8	0.5	53.8
Ending Balance	(1,130.2)	(1,137.8)	(1,231.2)	(1,231.7)	(1,130.2)	(1,231.2)
Accumulated Deficit
Equity [Line Items]
Beginning Balance	(2,352.2)	(2,336.8)	(2,234.0)	(2,225.7)	(2,336.8)	(2,225.7)
Net (loss) income	(57.2)	(13.0)	(7.0)	(8.8)
Cash dividends paid		(2.1)	(2.2)	(2.1)
Spinoff adjustments			(12.0)
Ending Balance	(2,409.4)	(2,352.2)	(2,255.2)	(2,234.0)	(2,409.4)	(2,255.2)
Accumulated Deficit | Cumulative Effect Period of Adoption Adjustment | Revision of Prior Period Adjustment | ASU 2016-03
Equity [Line Items]
Cumulative impact of adopting ASU, net of tax		(0.3)
Accumulated Deficit | Cumulative Effect Period of Adoption Adjustment | Revision of Prior Period Adjustment | ASU 2016-02
Equity [Line Items]
Cumulative impact of adopting ASU, net of tax				2.6
Accumulated Other Comprehensive Loss
Equity [Line Items]
Beginning Balance	(207.2)	(176.2)	(152.4)	(153.8)	(176.2)	(153.8)
Other comprehensive (loss) income	6.2	(31.0)	(2.4)	1.4	(24.8)	(1.0)
Ending Balance	(201.0)	(207.2)	(154.8)	(152.4)	(201.0)	(154.8)
RRD Stockholders' Equity
Equity [Line Items]
Beginning Balance	(429.2)	(383.7)	(264.5)	(260.1)	(383.7)	(260.1)
Net (loss) income	(57.2)	(13.0)	(7.0)	(8.8)
Other comprehensive (loss) income	6.2	(31.0)	(2.4)	1.4
Share-based compensation	1.8	1.4	3.3	3.4
Issuance of share-based awards, net of withholdings and other	(0.1)	(0.5)		(0.9)
Cash dividends paid		(2.1)	(2.2)	(2.1)
Spinoff adjustments			(12.0)
Ending Balance	(478.5)	(429.2)	(284.8)	(264.5)	(478.5)	(284.8)
RRD Stockholders' Equity | Cumulative Effect Period of Adoption Adjustment | Revision of Prior Period Adjustment | ASU 2016-03
Equity [Line Items]
Cumulative impact of adopting ASU, net of tax		(0.3)
RRD Stockholders' Equity | Cumulative Effect Period of Adoption Adjustment | Revision of Prior Period Adjustment | ASU 2016-02
Equity [Line Items]
Cumulative impact of adopting ASU, net of tax				2.6
Noncontrolling Interests
Equity [Line Items]
Beginning Balance	12.6	13.4	14.5	14.7	13.4	14.7
Net (loss) income		0.1	(0.4)	0.3
Other comprehensive (loss) income		(0.2)	(0.1)	0.2
Distributions to noncontrolling interests		(0.7)		(0.7)
Ending Balance	$ 12.6	$ 12.6	$ 14.0	$ 14.5	$ 12.6	$ 14.0