Goodwill and Other Intangible Assets - Schedule of Changes in the Carrying Value of Goodwill by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill gross	$ 4,803.5	$ 4,803.5	$ 4,607.9	$ 4,620.7
Accumulated impairment losses	(3,096.9)	(3,096.9)	(3,171.6)	(3,184.3)
Goodwill	1,706.6	1,706.6	1,436.3	1,436.4
Acquisitions		300.1
Foreign exchange and other adjustments		(11.7)	(0.1)
Impairment charges	(18.1)	(18.1)
Publishing and Retail Services
Goodwill [Line Items]
Goodwill gross	688.0	688.0	688.0	688.0
Accumulated impairment losses	(688.0)	(688.0)	(669.9)	(669.9)
Goodwill			18.1	18.1
Foreign exchange and other adjustments
Impairment charges		(18.1)
Variable Print
Goodwill [Line Items]
Goodwill gross	1,914.1	1,914.1	1,638.6	1,638.8
Accumulated impairment losses	(1,105.2)	(1,105.2)	(1,105.2)	(1,105.2)
Goodwill	808.9	808.9	533.4	533.6
Acquisitions		276.2
Foreign exchange and other adjustments		(0.7)	(0.2)
Strategic Services
Goodwill [Line Items]
Goodwill gross	987.5	987.5	1,005.4	1,007.5
Accumulated impairment losses	(222.4)	(222.4)	(243.5)	(243.4)
Goodwill	765.1	765.1	761.9	764.1
Acquisitions		3.4
Foreign exchange and other adjustments		(0.2)	(2.2)
International
Goodwill [Line Items]
Goodwill gross	1,213.9	1,213.9	1,275.9	1,286.4
Accumulated impairment losses	(1,081.3)	(1,081.3)	(1,153.0)	(1,165.8)
Goodwill	132.6	132.6	122.9	120.6
Acquisitions		20.5
Foreign exchange and other adjustments		$ (10.8)	$ 2.3