Earnings per Share - Earnings per Share Reconciliation (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net earnings per share attributable to RR Donnelley common shareholders:
Basic	$ 0.07	$ 0.31	$ 0.39	$ 0.49
Diluted	0.07	0.31	0.39	0.49
Dividends declared per common share	$ 0.26	$ 0.26	$ 0.78	$ 0.78
Numerator:
Net earnings attributable to RR Donnelley common shareholders	$ 14.3	$ 62.2	$ 80.1	$ 97.9
Denominator:
Weighted average number of common shares outstanding	209.2	200.3	204.3	197.9
Dilutive options and awards	1.1	1.3	1.2	1.5
Diluted weighted average number of common shares outstanding	210.3	201.6	205.5	199.4
Weighted average antidilutive securities excluded from computation of earnings per share	3.2	5.6	3.1	5.6
Stock options
Denominator:
Weighted average antidilutive securities excluded from computation of earnings per share	2.0	3.4	2.0	3.4
Performance share units
Denominator:
Weighted average antidilutive securities excluded from computation of earnings per share	1.2	1.0	1.1	1.0
Restricted stock units
Denominator:
Weighted average antidilutive securities excluded from computation of earnings per share	0.0	1.2	0.0	1.2