Earnings per Share - Earnings per Share Reconciliation (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net loss per share attributable to RRD common stockholders:
Basic	$ (0.10)	$ (0.18)	$ (0.22)	$ (0.32)
Diluted	$ (0.10)	$ (0.18)	$ (0.22)	$ (0.32)
Net loss attributable to RRD common stockholders	$ (7.0)	$ (13.0)	$ (15.8)	$ (22.6)
Weighted average number of common shares outstanding - Basic and Diluted	71.3	70.6	71.0	70.5
Weighted average number of anti-dilutive share-based awards:
Weighted average antidilutive securities excluded from computation of earnings per share	1.8	1.6	1.5	1.8
Dividends declared per common share	$ 0.03	$ 0.14	$ 0.06	$ 0.28
Stock options
Weighted average number of anti-dilutive share-based awards:
Weighted average antidilutive securities excluded from computation of earnings per share	0.4	0.8	0.5	0.9
Restricted stock units
Weighted average number of anti-dilutive share-based awards:
Weighted average antidilutive securities excluded from computation of earnings per share	1.4	0.8	1.0	0.9

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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