Acquisitions and Dispositions - Pro Forma Financial Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Combinations [Abstract]
Net sales	$ 11,380.1	$ 12,033.7
Net earnings attributable to RR Donnelley common shareholders	$ 190.7	$ 131.7
Net earnings per share attributable to RR Donnelley common shareholders:
Basic	$ 0.91	$ 0.63
Diluted	$ 0.91	$ 0.63
Amortization of purchased intangibles	$ 82.9	$ 89.6
Restructuring, impairment and other charges	$ 93.7	$ 129.6