Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net Sales	$ 1,649.5	$ 1,734.9	$ 5,036.8	$ 5,013.8
Income (Loss) from Operations	60.9	31.8	118.6	109.5
Depreciation and amortization	44.2	47.0	137.5	143.1
Capital Expenditures			72.7	77.2
Assets of Operations	3,698.0		3,698.0		$ 3,904.5
Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	44.2	47.0	137.5	143.1
Capital Expenditures	24.7	23.0	72.7	77.2
Assets of Operations	3,698.0		3,698.0		3,904.5
Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,681.3	1,775.2	5,141.6	5,132.2
Income (Loss) from Operations	86.6	44.1	185.6	158.2
Total Operating Segments \| Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	43.2	46.0	134.0	139.9
Capital Expenditures	17.3	18.0	59.7	62.1
Assets of Operations	3,462.4		3,462.4		3,706.5
Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(31.8)	(40.3)	(104.8)	(118.4)
Corporate
Segment Reporting Information [Line Items]
Income (Loss) from Operations	(25.7)	(12.3)	(67.0)	(48.7)
Corporate \| Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	1.0	1.0	3.5	3.2
Capital Expenditures	7.4	5.0	13.0	15.1
Assets of Operations	235.6		235.6		198.0
Business Services
Segment Reporting Information [Line Items]
Net Sales	1,363.2	1,440.6	4,188.3	4,165.7
Business Services \| Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,385.7	1,471.5	4,265.4	4,257.6
Income (Loss) from Operations	74.8	51.0	152.9	152.8
Business Services \| Total Operating Segments \| Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	31.5	35.0	98.7	105.0
Capital Expenditures	14.6	16.3	51.6	50.7
Assets of Operations	2,784.3		2,784.3		2,989.5
Business Services \| Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(22.5)	(30.9)	(77.1)	(91.9)
Marketing Solutions
Segment Reporting Information [Line Items]
Net Sales	286.3	294.3	848.5	848.1
Marketing Solutions \| Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	295.6	303.7	876.2	874.6
Income (Loss) from Operations	11.8	(6.9)	32.7	5.4
Marketing Solutions \| Total Operating Segments \| Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	11.7	11.0	35.3	34.9
Capital Expenditures	2.7	1.7	8.1	11.4
Assets of Operations	678.1		678.1		$ 717.0
Marketing Solutions \| Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	$ (9.3)	$ (9.4)	$ (27.7)	$ (26.5)

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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