v3.26.1
Information on Operating Segments - Assets by Segment (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Segment Reporting Information [Line Items]    
Assets $ 2,324.3 $ 2,253.0
Goodwill 469.3 478.5
Identifiable intangibles, net 674.9 696.9
Property, plant and equipment, net 136.6 138.8
Operating Segments    
Segment Reporting Information [Line Items]    
Assets [1] 701.8 648.8
Unallocated Assets    
Segment Reporting Information [Line Items]    
Assets [2] 341.7 290.0
ACCO Brands Americas    
Segment Reporting Information [Line Items]    
Goodwill 255.4 254.7
Property, plant and equipment, net 72.2 73.5
ACCO Brands Americas | Operating Segments    
Segment Reporting Information [Line Items]    
Assets 471.9 445.9
ACCO Brands International    
Segment Reporting Information [Line Items]    
Goodwill 213.9 223.8
Property, plant and equipment, net 64.4 65.3
ACCO Brands International | Operating Segments    
Segment Reporting Information [Line Items]    
Assets $ 229.9 $ 202.9
[1] Segment assets represent assets that are regularly provided to the CODM and consist of accounts receivable less allowances and inventory.
[2] Unallocated assets consist primarily of cash, deferred taxes, derivatives, prepaid pension assets, prepaid debt issuances costs and right of use asset, leases.