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, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Cost And Reserve [Line Items]
Employee Terminations	$ 8.7	$ 6.8	$ 13.7	$ 21.0
Other Restructuring Charges	2.3	4.8	6.4	8.4
Total Restructuring Charges	11.0	11.6	20.1	29.4
Impairment	1.3	0.1	0.5	0.8
Other Charges	1.4	20.5	2.8	21.8
Total	13.7	32.2	23.4	52.0
Total Operating Segments | Publishing and Retail Services
Restructuring Cost And Reserve [Line Items]
Employee Terminations	1.5	0.4	2.1	3.2
Other Restructuring Charges	0.6	0.4	1.6	1.5
Total Restructuring Charges	2.1	0.8	3.7	4.7
Impairment	0.1	(0.1)	1.1	(0.5)
Other Charges	0.8	17.0	1.6	17.8
Total	3.0	17.7	6.4	22.0
Total Operating Segments | Variable Print
Restructuring Cost And Reserve [Line Items]
Employee Terminations	0.1	1.1	0.3	3.1
Other Restructuring Charges	0.6	2.0	1.5	3.3
Total Restructuring Charges	0.7	3.1	1.8	6.4
Impairment	0.4	0.4	0.1	1.7
Other Charges	0.5	0.5	0.9	0.9
Total	1.6	4.0	2.8	9.0
Total Operating Segments | Strategic Services
Restructuring Cost And Reserve [Line Items]
Employee Terminations	1.2	2.2	1.5	3.8
Other Restructuring Charges	0.2	0.6	0.7	1.1
Total Restructuring Charges	1.4	2.8	2.2	4.9
Impairment	0.6		0.6
Other Charges	0.1	3.0	0.3	3.1
Total	2.1	5.8	3.1	8.0
Total Operating Segments | International
Restructuring Cost And Reserve [Line Items]
Employee Terminations	2.4	1.5	6.1	9.2
Other Restructuring Charges	1.1	1.5	2.6	1.7
Total Restructuring Charges	3.5	3.0	8.7	10.9
Impairment	0.2	(0.2)	(2.5)	(0.4)
Total	3.7	2.8	6.2	10.5
Corporate
Restructuring Cost And Reserve [Line Items]
Employee Terminations	3.5	1.6	3.7	1.7
Other Restructuring Charges	(0.2)	0.3		0.8
Total Restructuring Charges	3.3	1.9	3.7	2.5
Impairment			1.2
Total	$ 3.3	$ 1.9	$ 4.9	$ 2.5