Equity - Schedule of the Company's Equity Activity (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity [Line Items]
Beginning Balance			$ 620.4	$ 653.7
Net earnings (loss)	$ 43.6	$ 65.6	55.5	32.4
Other comprehensive income (loss)	23.6	10.2	3.2	2.1
Share-based compensation			9.8	9.9
Issuance of share-based awards, net of withholdings and other			(3.4)	(5.1)
Cash dividends paid			(104.1)	(99.2)
Noncontrolling interests in acquired business			4.6	2.7
Noncontrolling interests in disposed businesses			(1.6)
Distributions to noncontrolling interests			(1.0)	(0.7)
Ending Balance	737.6	914.8	737.6	914.8
Total RR Donnelley's Shareholders' Equity
Equity [Line Items]
Beginning Balance			593.8	631.8
Net earnings (loss)			65.8	35.7
Other comprehensive income (loss)			3.2	2.3
Share-based compensation			9.8	9.9
Issuance of share-based awards, net of withholdings and other			(3.4)	(5.1)
Cash dividends paid			(104.1)	(99.2)
Ending Balance	719.3	894.4	719.3	894.4
Noncontrolling Interest
Equity [Line Items]
Beginning Balance			26.6	21.9
Net earnings (loss)			(10.3)	(3.3)
Other comprehensive income (loss)				(0.2)
Noncontrolling interests in acquired business			4.6	2.7
Noncontrolling interests in disposed businesses			(1.6)
Distributions to noncontrolling interests			(1.0)	(0.7)
Ending Balance	$ 18.3	$ 20.4	18.3	20.4
Common Stock
Equity [Line Items]
Issuances of stock			$ 154.2	300.7
Treasury Stock
Equity [Line Items]
Issuances of stock				$ 18.3