Restructuring, Impairment and Other Charges - Schedule of Net Restructuring, Impairment and Other Charges (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Cost And Reserve [Line Items]
Employee Terminations	$ 6.8	$ 9.1	$ 21.0	$ 23.0
Other Restructuring Charges	4.8	6.8	8.4	10.9
Total Restructuring Charges	11.6	15.9	29.4	33.9
Impairment	0.1	3.1	0.8	9.8
Other Charges	20.5	3.8	21.8	24.3
Total	32.2	22.8	52.0	68.0
Publishing and Retail Services
Restructuring Cost And Reserve [Line Items]
Employee Terminations	0.4	0.2	3.2	0.4
Other Restructuring Charges	0.4	1.7	1.5	3.8
Total Restructuring Charges	0.8	1.9	4.7	4.2
Impairment	(0.1)	1.4	(0.5)	3.6
Other Charges	17.0		17.8	16.3
Total	17.7	3.3	22.0	24.1
Variable Print
Restructuring Cost And Reserve [Line Items]
Employee Terminations	1.1	3.0	3.1	14.1
Other Restructuring Charges	2.0	2.5	3.3	3.4
Total Restructuring Charges	3.1	5.5	6.4	17.5
Impairment	0.4	0.7	1.7	5.2
Other Charges	0.5		0.9	4.1
Total	4.0	6.2	9.0	26.8
Strategic Services
Restructuring Cost And Reserve [Line Items]
Employee Terminations	2.2	1.4	3.8	2.4
Other Restructuring Charges	0.6	1.0	1.1	1.5
Total Restructuring Charges	2.8	2.4	4.9	3.9
Other Charges	3.0	3.8	3.1	3.9
Total	5.8	6.2	8.0	7.8
International
Restructuring Cost And Reserve [Line Items]
Employee Terminations	1.5	2.9	9.2	4.0
Other Restructuring Charges	1.5	0.1	1.7	0.6
Total Restructuring Charges	3.0	3.0	10.9	4.6
Impairment	(0.2)	1.0	(0.4)	1.0
Total	2.8	4.0	10.5	5.6
Corporate
Restructuring Cost And Reserve [Line Items]
Employee Terminations	1.6	1.6	1.7	2.1
Other Restructuring Charges	0.3	1.5	0.8	1.6
Total Restructuring Charges	1.9	3.1	2.5	3.7
Total	$ 1.9	$ 3.1	$ 2.5	$ 3.7