Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net Sales	$ 1,679.5	$ 1,620.0	$ 3,387.3	$ 3,278.9
Income (Loss) from Operations	25.5	34.4	57.7	77.7
Depreciation and amortization	46.1	47.5	93.3	96.1
Capital Expenditures			48.0	54.2
Assets of Operations	3,653.8		3,653.8		$ 3,904.5
Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	46.1	47.5	93.3	96.1
Capital Expenditures	26.5	28.1	48.0	54.2
Assets of Operations	3,653.8		3,653.8		3,904.5
Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,716.8	1,656.3	3,460.3	3,357.0
Income (Loss) from Operations	46.9	50.5	99.0	114.1
Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	44.9	46.6	90.8	93.9
Capital Expenditures	22.7	24.6	42.4	44.1
Assets of Operations	3,404.8		3,404.8		3,706.5
Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(37.3)	(36.3)	(73.0)	(78.1)
Corporate
Segment Reporting Information [Line Items]
Income (Loss) from Operations	(21.4)	(16.1)	(41.3)	(36.4)
Corporate | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	1.2	0.9	2.5	2.2
Capital Expenditures	3.8	3.5	5.6	10.1
Assets of Operations	249.0		249.0		198.0
Business Services
Segment Reporting Information [Line Items]
Net Sales	1,409.0	1,348.7	2,825.1	2,725.1
Business Services | Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,434.2	1,376.3	2,879.7	2,786.1
Income (Loss) from Operations	38.3	43.1	78.1	101.8
Business Services | Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	33.2	34.9	67.2	70.0
Capital Expenditures	20.3	19.5	37.0	34.4
Assets of Operations	2,754.4		2,754.4		2,989.5
Business Services | Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(25.2)	(27.6)	(54.6)	(61.0)
Marketing Solutions
Segment Reporting Information [Line Items]
Net Sales	270.5	271.3	562.2	553.8
Marketing Solutions | Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	282.6	280.0	580.6	570.9
Income (Loss) from Operations	8.6	7.4	20.9	12.3
Marketing Solutions | Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	11.7	11.7	23.6	23.9
Capital Expenditures	2.4	5.1	5.4	9.7
Assets of Operations	650.4		650.4		$ 717.0
Marketing Solutions | Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	$ (12.1)	$ (8.7)	$ (18.4)	$ (17.1)