Acquisitions and Dispositions - Pro Forma Financial Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2015
Business Combinations [Abstract]
Net sales	$ 2,828.0	$ 8,445.5
Net earnings attributable to RR Donnelley common stockholders	$ 22.5	$ 118.0
Net earnings per share attributable to RR Donnelley common stockholders:
Basic	$ 0.32	$ 1.69
Diluted	$ 0.32	$ 1.68
Amortization of purchased intangibles	$ 20.4	$ 63.0
Restructuring, impairment and other charges	$ 48.4	$ 76.7

Business acquisitions pro forma amortization of purchased intangibles.

No definition available.

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- Definition

Business acquisitions pro forma restructuring and impairment charges.

+ References

No definition available.

+ Details

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- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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- 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

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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- References

No definition available.

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