Segment Information - Summary of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total net sales	$ 654.8	$ 766.5
Operating Income (Loss)	(10.7)	0.1
Restructuring, Impairment and Transaction- Related Charges	32.5	26.0
Operating Segments
Segment Reporting Information [Line Items]
Operating Income (Loss)	2.1	15.0
Restructuring, Impairment and Transaction- Related Charges	32.4	25.1
Corporate
Segment Reporting Information [Line Items]
Operating Income (Loss)	(12.8)	(14.9)
Restructuring, Impairment and Transaction- Related Charges	0.1	0.9
United States Print and Related Services
Segment Reporting Information [Line Items]
Total net sales	578.9	657.6
United States Print and Related Services | Operating Segments
Segment Reporting Information [Line Items]
Operating Income (Loss)	(1.3)	7.3
Restructuring, Impairment and Transaction- Related Charges	31.6	22.5
International
Segment Reporting Information [Line Items]
Total net sales	75.9	108.9
International | Operating Segments
Segment Reporting Information [Line Items]
Operating Income (Loss)	3.4	7.7
Restructuring, Impairment and Transaction- Related Charges	0.8	2.6
Products
Segment Reporting Information [Line Items]
Total net sales	507.2	607.9
Products | Operating Segments
Segment Reporting Information [Line Items]
Total net sales	507.2	607.9
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	435.9	504.5
Products | United States Print and Related Services | Operating Segments
Segment Reporting Information [Line Items]
Total net sales	435.9	504.5
Products | International
Segment Reporting Information [Line Items]
Total net sales	71.3	103.4
Products | International | Operating Segments
Segment Reporting Information [Line Items]
Total net sales	71.3	103.4
Services
Segment Reporting Information [Line Items]
Total net sales	147.6	158.6
Services | Operating Segments
Segment Reporting Information [Line Items]
Total net sales	147.6	158.6
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	143.0	153.1
Services | United States Print and Related Services | Operating Segments
Segment Reporting Information [Line Items]
Total net sales	143.0	153.1
Services | International
Segment Reporting Information [Line Items]
Total net sales	4.6	5.5
Services | International | Operating Segments
Segment Reporting Information [Line Items]
Total net sales	$ 4.6	$ 5.5