Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2016	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Oct. 01, 2016
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges				$ 527.8	$ 18.0
Impairment of intangible assets					11.9
Additions to other intangible assets				14.1	5.2
Amortization expense for other intangible assets				33.7	46.2	$ 50.2
Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Impairment of intangible assets					11.9
International
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges					18.0
Impairment of intangible assets			$ 7.8
International | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Impairment of intangible assets						7.8
International | Latin America
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges		$ 4.3
International | Latin America | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Impairment of intangible assets					2.2
Variable Print
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges				527.8	0.0
Impairment of intangible assets			$ 4.1
Commercial and Digital Print | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Impairment of intangible assets						$ 4.1
Commercial and Digital Print | Variable Print
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges	$ 416.2			416.2
Commercial and Digital Print | Variable Print | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Impairment of intangible assets				29.7
Statement Printing | Variable Print
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges	$ 111.6			111.6
Statement Printing | Variable Print | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Impairment of intangible assets				29.7
Labels | Variable Print | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
Impairment of intangible assets					$ 9.2
LSC and Donnelley Financial | Spinoff
Schedule Of Other Intangible Assets [Line Items]
Goodwill							$ 657.9
LSC Communications, Inc. | Spinoff | Digital And Creative Solutions
Schedule Of Other Intangible Assets [Line Items]
Allocation of goodwill				25.5
LSC Communications, Inc. | Spinoff | Logistics services
Schedule Of Other Intangible Assets [Line Items]
Allocation of goodwill				$ 104.2