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Acquisitions (Pro Forma Financial Information) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Acquisitions [Abstract]
Net sales	$ 2,524.9	$ 2,594.8
Net earnings (loss) attributable to RR Donnelley common shareholders	$ 37.7	$ 40.4
Basic	$ 0.21	$ 0.20
Diluted	$ 0.21	$ 0.19

- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details

- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details