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Information on Business Segments - Net Sales by Segment (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Segment Reporting Information [Line Items]    
Net sales $ 358.9 $ 402.6
ACCO Brands Americas    
Segment Reporting Information [Line Items]    
Net sales 197.2 230.0
ACCO Brands International    
Segment Reporting Information [Line Items]    
Net sales $ 161.7 $ 172.6