Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges				$ 18.0	$ 18.1
impairment of intangible assets				11.9
Additions to other intangible assets				108.8	205.0
Amortization expense for other intangible assets				78.5	78.1	$ 64.0
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			18.0	0.0
International | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
impairment of intangible assets		$ 7.8			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
Publishing and Retail Services
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges		18.1		0.0	18.1
Variable Print
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges				0.0	0.0
Variable Print | Trade Names
Schedule Of Other Intangible Assets [Line Items]
impairment of intangible assets					1.4
Variable Print | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
impairment of intangible assets		4.1
Variable Print | Labels | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
impairment of intangible assets				9.2
Strategic Services
Schedule Of Other Intangible Assets [Line Items]
Goodwill impairment non-cash charges				$ 0.0	$ 0.0
Strategic Services | Customer Relationships
Schedule Of Other Intangible Assets [Line Items]
impairment of intangible assets		$ 1.7	$ 3.3