Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net Sales	$ 1,619.4	$ 1,649.5	$ 4,650.0	$ 5,036.8
Income (Loss) from Operations	73.8	60.9	118.0	118.6
Depreciation and amortization	43.5	44.2	126.2	137.5
Capital Expenditures			107.4	72.7
Assets of Operations	3,540.5		3,540.5		$ 3,640.8
Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	43.5	44.2	126.2	137.5
Capital Expenditures	31.0	24.7	107.4	72.7
Assets of Operations	3,540.5		3,540.5		3,640.8
Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,655.0	1,681.3	4,743.6	5,141.6
Income (Loss) from Operations	105.0	86.6	189.7	185.6
Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	40.9	43.2	120.3	134.0
Capital Expenditures	25.6	17.3	92.0	59.7
Assets of Operations	3,299.9		3,299.9		3,439.1
Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(35.6)	(31.8)	(93.6)	(104.8)
Corporate
Segment Reporting Information [Line Items]
Income (Loss) from Operations	(31.2)	(25.7)	(71.7)	(67.0)
Corporate | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	2.6	1.0	5.9	3.5
Capital Expenditures	5.4	7.4	15.4	13.0
Assets of Operations	240.6		240.6		201.7
Business Services
Segment Reporting Information [Line Items]
Net Sales	1,276.0	1,363.2	3,743.5	4,188.3
Business Services | Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,303.0	1,385.7	3,812.7	4,265.4
Income (Loss) from Operations	80.6	74.8	150.8	152.9
Business Services | Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	26.2	31.5	82.1	98.7
Capital Expenditures	17.6	14.6	60.4	51.6
Assets of Operations	2,533.2		2,533.2		2,764.5
Business Services | Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(27.0)	(22.5)	(69.2)	(77.1)
Marketing Solutions
Segment Reporting Information [Line Items]
Net Sales	343.4	286.3	906.5	848.5
Marketing Solutions | Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	352.0	295.6	930.9	876.2
Income (Loss) from Operations	24.4	11.8	38.9	32.7
Marketing Solutions | Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	14.7	11.7	38.2	35.3
Capital Expenditures	8.0	2.7	31.6	8.1
Assets of Operations	766.7		766.7		$ 674.6
Marketing Solutions | Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	$ (8.6)	$ (9.3)	$ (24.4)	$ (27.7)