Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Total net sales	$ 705.8	$ 822.5
Operating Income (Loss) from Continuing Operations	21.0	5.0
Restructuring, Impairment and Transaction- Related Charges	2.6	22.8
Operating Segments
Segment Reporting Information [Line Items]
Operating Income (Loss) from Continuing Operations	34.0	16.6
Restructuring, Impairment and Transaction- Related Charges	1.9	22.1
Corporate
Segment Reporting Information [Line Items]
Operating Income (Loss) from Continuing Operations	(13.0)	(11.6)
Restructuring, Impairment and Transaction- Related Charges	0.7	0.7
United States Print and Related Services
Segment Reporting Information [Line Items]
Total net sales	634.6	736.6
Operating Income (Loss) from Continuing Operations	32.5	16.3
Restructuring, Impairment and Transaction- Related Charges	1.1	20.8
International
Segment Reporting Information [Line Items]
Total net sales	71.2	85.9
Operating Income (Loss) from Continuing Operations	1.5	0.3
Restructuring, Impairment and Transaction- Related Charges	0.8	1.3
Products
Segment Reporting Information [Line Items]
Total net sales	526.0	645.0
Products | Operating Segments
Segment Reporting Information [Line Items]
Total net sales	526.0	645.0
Products | Corporate
Segment Reporting Information [Line Items]
Total net sales	0.0	0.0
Products | United States Print and Related Services
Segment Reporting Information [Line Items]
Total net sales	459.9	563.6
Products | International
Segment Reporting Information [Line Items]
Total net sales	66.1	81.4
Services
Segment Reporting Information [Line Items]
Total net sales	179.8	177.5
Services | Operating Segments
Segment Reporting Information [Line Items]
Total net sales	179.8	177.5
Services | Corporate
Segment Reporting Information [Line Items]
Total net sales	0.0	0.0
Services | United States Print and Related Services
Segment Reporting Information [Line Items]
Total net sales	174.7	173.0
Services | International
Segment Reporting Information [Line Items]
Total net sales	$ 5.1	$ 4.5