Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 654.8	$ 766.5
Products
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	507.2	607.9
Catalog, publications, retail inserts and directories
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	360.4	418.2
Direct mail and other printed products
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	144.8	187.9
Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2.0	1.8
Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	147.6	158.6
Logistics services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	67.5	69.5
Marketing services and medical services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	80.1	89.1
United States Print and Related Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	578.9	657.6
United States Print and Related Services | Products
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	435.9	504.5
United States Print and Related Services | Catalog, publications, retail inserts and directories
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	312.2	360.9
United States Print and Related Services | Direct mail and other printed products
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	121.7	142.0
United States Print and Related Services | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2.0	1.6
United States Print and Related Services | Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	143.0	153.1
United States Print and Related Services | Logistics services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	63.2	64.4
United States Print and Related Services | Marketing services and medical services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	79.8	88.7
International
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	75.9	108.9
International | Products
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	71.3	103.4
International | Catalog, publications, retail inserts and directories
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	48.2	57.3
International | Direct mail and other printed products
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	23.1	45.9
International | Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0.0	0.2
International | Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4.6	5.5
International | Logistics services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4.3	5.1
International | Marketing services and medical services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 0.3	$ 0.4