Equity - Schedule of the Company's Equity Activity (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Equity [Line Items]
Beginning Balance			$ 620.4	$ 653.7
Net earnings (loss)	$ 11.6	$ 64.8	67.1	97.2
Other comprehensive loss	(35.2)	(14.0)	(32.0)	(11.9)
Share-based compensation			13.6	13.8
Issuance of share-based awards, net of withholdings and other			(3.4)	(4.3)
Cash dividends paid			(158.4)	(151.1)
Noncontrolling interests in acquired business			4.6	2.7
Noncontrolling interests in disposed businesses			(2.4)
Distributions to noncontrolling interests			(1.0)	(0.7)
Ending Balance	662.7	918.4	662.7	918.4
Total RR Donnelley's Shareholders' Equity
Equity [Line Items]
Beginning Balance			593.8	631.8
Net earnings (loss)			80.1	97.9
Other comprehensive loss			(31.0)	(11.7)
Share-based compensation			13.6	13.8
Issuance of share-based awards, net of withholdings and other			(3.4)	(4.3)
Cash dividends paid			(158.4)	(151.1)
Ending Balance	648.9	895.4	648.9	895.4
Noncontrolling Interests
Equity [Line Items]
Beginning Balance			26.6	21.9
Net earnings (loss)			(13.0)	(0.7)
Other comprehensive loss			(1.0)	(0.2)
Noncontrolling interests in acquired business			4.6	2.7
Noncontrolling interests in disposed businesses			(2.4)
Distributions to noncontrolling interests			(1.0)	(0.7)
Ending Balance	$ 13.8	$ 23.0	13.8	23.0
Common Stock
Equity [Line Items]
Issuances of stock			$ 154.2	300.7
Treasury Stock
Equity [Line Items]
Issuances of stock				$ 18.3