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Goodwill and Identifiable Intangible Assets - Summary of Changes in Net Carrying Amount Goodwill By Segment (Details)
$ in Millions
6 Months Ended
Jun. 30, 2023
USD ($)
Goodwill [Roll Forward]  
Balance at December 31, 2022 $ 671.5
Foreign currency translation (9.5)
Balance at June 30, 2023 662.0
ACCO Brands North America  
Goodwill [Roll Forward]  
Balance at December 31, 2022 348.0
Foreign currency translation 0.0
Balance at June 30, 2023 348.0
ACCO Brands EMEA  
Goodwill [Roll Forward]  
Balance at December 31, 2022 145.6
Foreign currency translation (10.8)
Balance at June 30, 2023 134.8
ACCO Brands International  
Goodwill [Roll Forward]  
Balance at December 31, 2022 177.9
Foreign currency translation 1.3
Balance at June 30, 2023 $ 179.2