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Goodwill and Identifiable Intangible Assets - Summary of Changes in Net Carrying Amount Goodwill By Segment (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Goodwill [Roll Forward]
Balance at December 31, 2022	$ 671.5
Foreign currency translation	0.4
Balance at March 31, 2023	671.9
ACCO Brands North America
Goodwill [Roll Forward]
Balance at December 31, 2022	348.0
Foreign currency translation	0.0
Balance at March 31, 2023	348.0
ACCO Brands EMEA
Goodwill [Roll Forward]
Balance at December 31, 2022	145.6
Foreign currency translation	(0.2)
Balance at March 31, 2023	145.4
ACCO Brands International
Goodwill [Roll Forward]
Balance at December 31, 2022	177.9
Foreign currency translation	0.6
Balance at March 31, 2023	$ 178.5

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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