Equity - Schedule of the Company's Equity Activity (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Equity [Line Items]
Beginning Balance			$ 696.6	$ 620.4
Net earnings (loss)	$ (6.8)	$ 11.6	19.0	67.1
Other comprehensive (loss) income	(23.8)	(35.2)	(22.3)	(32.0)
Share-based compensation			13.4	13.6
Issuance of share-based awards, net of withholdings and other			(4.2)	(3.4)
Cash dividends paid			(163.2)	(158.4)
Noncontrolling interests in acquired business				4.6
Noncontrolling interests in disposed businesses				(2.4)
Distributions to noncontrolling interests			(0.9)	(1.0)
Ending Balance	538.4	662.7	538.4	662.7
Total RR Donnelley's Stockholders' Equity
Equity [Line Items]
Beginning Balance			682.7	593.8
Net earnings (loss)			18.2	80.1
Other comprehensive (loss) income			(22.5)	(31.0)
Share-based compensation			13.4	13.6
Issuance of share-based awards, net of withholdings and other			(4.2)	(3.4)
Cash dividends paid			(163.2)	(158.4)
Ending Balance	524.4	648.9	524.4	648.9
Noncontrolling Interests
Equity [Line Items]
Beginning Balance			13.9	26.6
Net earnings (loss)			0.8	(13.0)
Other comprehensive (loss) income			0.2	(1.0)
Noncontrolling interests in acquired business				4.6
Noncontrolling interests in disposed businesses				(2.4)
Distributions to noncontrolling interests			(0.9)	(1.0)
Ending Balance	$ 14.0	$ 13.8	$ 14.0	13.8
Common Stock
Equity [Line Items]
Issuances of stock				$ 154.2