Revenue Recognition - Net Sales Disaggregated by Products and Services (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation Of Revenue [Line Items]
Total net sales	$ 1,409.5	$ 1,521.9
Commercial Print
Disaggregation Of Revenue [Line Items]
Total net sales	363.4	422.4
Direct Marketing
Disaggregation Of Revenue [Line Items]
Total net sales	182.8	148.5
Statements
Disaggregation Of Revenue [Line Items]
Total net sales	126.9	149.5
Labels
Disaggregation Of Revenue [Line Items]
Total net sales	121.6	120.5
Packaging
Disaggregation Of Revenue [Line Items]
Total net sales	115.1	139.5
Digital Print and Fulfillment
Disaggregation Of Revenue [Line Items]
Total net sales	113.6	109.6
Supply Chain Management
Disaggregation Of Revenue [Line Items]
Total net sales	69.7	78.5
Forms
Disaggregation Of Revenue [Line Items]
Total net sales	52.4	62.4
Products
Disaggregation Of Revenue [Line Items]
Total net sales	1,145.5	1,230.9
Logistics
Disaggregation Of Revenue [Line Items]
Total net sales	195.2	201.7
Business Process Outsourcing
Disaggregation Of Revenue [Line Items]
Total net sales	41.4	61.8
Digital and Creative Solutions
Disaggregation Of Revenue [Line Items]
Total net sales	27.4	27.5
Services
Disaggregation Of Revenue [Line Items]
Total net sales	$ 264.0	$ 291.0