Equity - Schedule of the Company's Equity Activity (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Equity [Line Items]
Beginning Balance			$ 696.6	$ 620.4
Net earnings (loss)	$ (14.3)	$ 43.6	25.8	55.5
Other comprehensive income	(15.8)	23.6	1.5	3.2
Share-based compensation			10.0	9.8
Issuance of share-based awards, net of withholdings and other			(4.8)	(3.4)
Cash dividends paid			(108.7)	(104.1)
Noncontrolling interests in acquired business				4.6
Noncontrolling interests in disposed businesses				(1.6)
Distributions to noncontrolling interests			(0.9)	(1.0)
Ending Balance	619.5	737.6	619.5	737.6
Total RR Donnelley's Shareholders' Equity
Equity [Line Items]
Beginning Balance			682.7	593.8
Net earnings (loss)			25.3	65.8
Other comprehensive income			1.3	3.2
Share-based compensation			10.0	9.8
Issuance of share-based awards, net of withholdings and other			(4.8)	(3.4)
Cash dividends paid			(108.7)	(104.1)
Ending Balance	605.8	719.3	605.8	719.3
Noncontrolling Interests
Equity [Line Items]
Beginning Balance			13.9	26.6
Net earnings (loss)			0.5	(10.3)
Other comprehensive income			0.2
Noncontrolling interests in acquired business				4.6
Noncontrolling interests in disposed businesses				(1.6)
Distributions to noncontrolling interests			(0.9)	(1.0)
Ending Balance	$ 13.7	$ 18.3	$ 13.7	18.3
Common Stock
Equity [Line Items]
Issuances of stock				$ 154.2