Revenue Recognition - Net Sales Disaggregated by Products and Services (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation Of Revenue [Line Items]
Services net sales	$ 1,707.8	$ 1,658.9
Products
Disaggregation Of Revenue [Line Items]
Services net sales	1,286.6	1,271.5
Products | Commercial Print
Disaggregation Of Revenue [Line Items]
Services net sales	462.2	499.2
Products | Statements
Disaggregation Of Revenue [Line Items]
Services net sales	159.8	157.7
Products | Direct Mail
Disaggregation Of Revenue [Line Items]
Services net sales	148.1	132.4
Products | Labels
Disaggregation Of Revenue [Line Items]
Services net sales	117.5	113.1
Products | Packaging
Disaggregation Of Revenue [Line Items]
Services net sales	141.4	108.7
Products | Digital Print and Fulfillment
Disaggregation Of Revenue [Line Items]
Services net sales	110.8	112.0
Products | Supply Chain Management
Disaggregation Of Revenue [Line Items]
Services net sales	79.8	75.5
Products | Forms
Disaggregation Of Revenue [Line Items]
Services net sales	67.0	72.9
Services
Disaggregation Of Revenue [Line Items]
Services net sales	421.2	387.4
Services | Direct Mail
Disaggregation Of Revenue [Line Items]
Services net sales	1.5	1.8
Services | Logistics
Disaggregation Of Revenue [Line Items]
Services net sales	327.2	296.1
Services | Business Process Outsourcing
Disaggregation Of Revenue [Line Items]
Services net sales	61.2	53.2
Services | Digital and Creative Solutions
Disaggregation Of Revenue [Line Items]
Services net sales	$ 31.3	$ 36.3