Segment Information - Schedule of Segment Reporting Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net Sales	$ 1,162.2	$ 1,508.7	$ 2,571.7	$ 3,030.6
Income (Loss) from Operations	(15.9)	20.9	(7.1)	44.2
Depreciation and amortization	38.2	40.0	79.0	82.7
Capital Expenditures			38.1	76.4
Assets of Operations	3,203.5		3,203.5		$ 3,330.1
Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	38.2	40.0	79.0	82.7
Capital Expenditures	20.4	39.0	38.1	76.4
Assets of Operations	3,203.5	3,330.1	3,203.5	3,330.1
Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	1,182.3	1,540.8	2,614.9	3,088.6
Income (Loss) from Operations	17.7	47.6	62.2	84.7
Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	37.1	38.0	77.3	79.4
Capital Expenditures	13.9	33.7	26.2	66.4
Assets of Operations	2,746.3	3,077.8	2,746.3	3,077.8
Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(20.1)	(32.1)	(43.2)	(58.0)
Corporate
Segment Reporting Information [Line Items]
Income (Loss) from Operations	(33.6)	(26.7)	(69.3)	(40.5)
Corporate | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	1.1	2.0	1.7	3.3
Capital Expenditures	6.5	5.3	11.9	10.0
Assets of Operations	457.2	252.3	457.2	252.3
Business Services
Segment Reporting Information [Line Items]
Net Sales	948.2	1,231.2	2,033.9	2,467.5
Business Services | Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	963.0	1,253.8	2,065.2	2,509.7
Income (Loss) from Operations	19.5	41.6	39.1	70.2
Business Services | Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	25.1	26.6	51.1	55.9
Capital Expenditures	9.1	19.3	19.8	42.8
Assets of Operations	2,123.4	2,329.7	2,123.4	2,329.7
Business Services | Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	(14.8)	(22.6)	(31.3)	(42.2)
Marketing Solutions
Segment Reporting Information [Line Items]
Net Sales	214.0	277.5	537.8	563.1
Marketing Solutions | Total Operating Segments
Segment Reporting Information [Line Items]
Net Sales	219.3	287.0	549.7	578.9
Income (Loss) from Operations	(1.8)	6.0	23.1	14.5
Marketing Solutions | Total Operating Segments | Continuing Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	12.0	11.4	26.2	23.5
Capital Expenditures	4.8	14.4	6.4	23.6
Assets of Operations	622.9	748.1	622.9	748.1
Marketing Solutions | Intersegment Sales
Segment Reporting Information [Line Items]
Net Sales	$ (5.3)	$ (9.5)	$ (11.9)	$ (15.8)