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Goodwill and Identifiable Intangible Assets - Summary of Changes in Net Carrying Amount Goodwill By Segment (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Goodwill [Roll Forward]        
Beginning balance $ 671,500,000 $ 671,500,000 $ 802,500,000  
Goodwill impairment 0 (89,500,000) (98,700,000) $ 0
Foreign currency translation   8,000,000 (32,300,000)  
Ending balance   590,000,000 671,500,000 802,500,000
ACCO Brands North America        
Goodwill [Roll Forward]        
Beginning balance 348,000,000 348,000,000 446,700,000  
Goodwill impairment   (89,500,000) (98,700,000)  
Foreign currency translation   0 0  
Ending balance   258,500,000 348,000,000 446,700,000
ACCO Brands EMEA        
Goodwill [Roll Forward]        
Beginning balance 145,600,000 145,600,000 178,600,000  
Goodwill impairment   0 0  
Foreign currency translation   6,700,000 (33,000,000)  
Ending balance   152,300,000 145,600,000 178,600,000
ACCO Brands International        
Goodwill [Roll Forward]        
Beginning balance $ 177,900,000 177,900,000 177,200,000  
Goodwill impairment   0 0  
Foreign currency translation   1,300,000 700,000  
Ending balance   $ 179,200,000 $ 177,900,000 $ 177,200,000