v3.26.1
Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Net sales [1] $ 415.1 $ 394.8 $ 758.8 $ 712.2
Product and services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Net sales 409.7 386.2 746.9 695.4
Product and services transferred over time        
Disaggregation of Revenue [Line Items]        
Net sales 5.4 8.6 11.9 16.8
ACCO Brands Americas        
Disaggregation of Revenue [Line Items]        
Net sales 262.9 248.5 441.4 422.4
ACCO Brands Americas | United States        
Disaggregation of Revenue [Line Items]        
Net sales 204.2 190.4 329.5 318.2
ACCO Brands Americas | Canada        
Disaggregation of Revenue [Line Items]        
Net sales 26.0 27.6 40.7 41.8
ACCO Brands Americas | Latin America        
Disaggregation of Revenue [Line Items]        
Net sales 32.7 30.5 71.2 62.4
ACCO Brands International        
Disaggregation of Revenue [Line Items]        
Net sales 152.2 146.3 317.4 289.8
ACCO Brands International | EMEA        
Disaggregation of Revenue [Line Items]        
Net sales [2] 118.3 113.1 247.7 225.7
ACCO Brands International | Australia/N.Z.        
Disaggregation of Revenue [Line Items]        
Net sales 24.8 24.6 51.9 [2] 47.9
ACCO Brands International | Asia        
Disaggregation of Revenue [Line Items]        
Net sales $ 9.1 $ 8.6 $ 17.8 $ 16.2
[1] Net sales are attributed to geographic areas based on the location of the selling subsidiaries.
[2] EMEA is comprised largely of Europe but also includes export sales to the Middle East and Africa.