Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net Sales	$ 1,508.7	$ 1,679.5	$ 3,030.6	$ 3,387.3
Income (Loss) from Operations	20.9	25.5	44.2	57.7
Depreciation and amortization	40.0	46.1	82.7	93.3
Capital Expenditures			76.4	48.0
Assets of Operations	3,561.4		3,561.4		$ 3,640.8
Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	40.0	46.1	82.7	93.3
Capital Expenditures	39.0	26.5	76.4	48.0
Assets of Operations	3,561.4		3,561.4		3,640.8
Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,540.8	1,716.8	3,088.6	3,460.3
Income (Loss) from Operations	47.6	46.9	84.7	99.0
Total Operating Segments \| Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	38.0	44.9	79.4	90.8
Capital Expenditures	33.7	22.7	66.4	42.4
Assets of Operations	3,297.3		3,297.3		3,439.1
Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(32.1)	(37.3)	(58.0)	(73.0)
Corporate
Segment Reporting Information [Line Items]
Income (Loss) from Operations	(26.7)	(21.4)	(40.5)	(41.3)
Corporate \| Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	2.0	1.2	3.3	2.5
Capital Expenditures	5.3	3.8	10.0	5.6
Assets of Operations	264.1		264.1		201.7
Business Services
Segment Reporting Information [Line Items]
Net Sales	1,231.2	1,409.0	2,467.5	2,825.1
Business Services \| Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,253.8	1,434.2	2,509.7	2,879.7
Income (Loss) from Operations	41.6	38.3	70.2	78.1
Business Services \| Total Operating Segments \| Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	26.6	33.2	55.9	67.2
Capital Expenditures	19.3	20.3	42.8	37.0
Assets of Operations	2,577.2		2,577.2		2,764.5
Business Services \| Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(22.6)	(25.2)	(42.2)	(54.6)
Marketing Solutions
Segment Reporting Information [Line Items]
Net Sales	277.5	270.5	563.1	562.2
Marketing Solutions \| Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	287.0	282.6	578.9	580.6
Income (Loss) from Operations	6.0	8.6	14.5	20.9
Marketing Solutions \| Total Operating Segments \| Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	11.4	11.7	23.5	23.6
Capital Expenditures	14.4	2.4	23.6	5.4
Assets of Operations	720.1		720.1		$ 674.6
Marketing Solutions \| Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	$ (9.5)	$ (12.1)	$ (15.8)	$ (18.4)

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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