Revenue Recognition - Net Sales Disaggregated by Products and Services (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation Of Revenue [Line Items]
Total net sales	$ 1,508.7	$ 1,679.5	$ 3,030.6	$ 3,387.3
Commercial Print
Disaggregation Of Revenue [Line Items]
Total net sales	413.5	462.7	835.9	924.9
Packaging
Disaggregation Of Revenue [Line Items]
Total net sales	162.6	152.9	302.1	294.3
Direct Marketing
Disaggregation Of Revenue [Line Items]
Total net sales	137.0	133.3	285.5	281.4
Statements
Disaggregation Of Revenue [Line Items]
Total net sales	133.6	143.1	283.1	302.9
Labels
Disaggregation Of Revenue [Line Items]
Total net sales	119.6	119.2	240.1	236.7
Digital Print and Fulfillment
Disaggregation Of Revenue [Line Items]
Total net sales	115.1	108.3	224.7	219.1
Supply Chain Management
Disaggregation Of Revenue [Line Items]
Total net sales	74.1	80.9	152.6	160.7
Forms
Disaggregation Of Revenue [Line Items]
Total net sales	59.2	64.8	121.6	131.8
Products
Disaggregation Of Revenue [Line Items]
Total net sales	1,214.7	1,265.2	2,445.6	2,551.8
Logistics
Disaggregation Of Revenue [Line Items]
Total net sales	208.0	324.0	409.7	651.2
Business Process Outsourcing
Disaggregation Of Revenue [Line Items]
Total net sales	60.6	61.4	122.4	122.6
Digital and Creative Solutions
Disaggregation Of Revenue [Line Items]
Total net sales	25.4	28.9	52.9	61.7
Services
Disaggregation Of Revenue [Line Items]
Total net sales	$ 294.0	$ 414.3	$ 585.0	$ 835.5