Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	[1]	$ 438.3	$ 493.6	$ 797.2	$ 896.2
Product and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales		429.8	483.1	778.7	873.4
Product and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		8.5	10.5	18.5	22.8
ACCO Brands Americas
Disaggregation of Revenue [Line Items]
Net sales		292.3	336.4	489.5	566.4
ACCO Brands Americas | United States
Disaggregation of Revenue [Line Items]
Net sales		224.9	262.1	362.2	418.1
ACCO Brands Americas | Canada
Disaggregation of Revenue [Line Items]
Net sales		29.2	31.7	47.4	53.3
ACCO Brands Americas | Latin America
Disaggregation of Revenue [Line Items]
Net sales		38.2	42.6	79.9	95.0
ACCO Brands International
Disaggregation of Revenue [Line Items]
Net sales		146.0	157.2	307.7	329.8
ACCO Brands International | EMEA
Disaggregation of Revenue [Line Items]
Net sales	[2]	115.5	125.7	244.7	261.5
ACCO Brands International | Australia/N.Z.
Disaggregation of Revenue [Line Items]
Net sales		23.2	24.1	48.3	52.4
ACCO Brands International | Asia
Disaggregation of Revenue [Line Items]
Net sales		$ 7.3	$ 7.4	$ 14.7	$ 15.9

[1] (2) Net sales are attributed to geographic areas based on the location of the selling subsidiaries.

[2] (1) EMEA is comprised largely of Europe, but also includes export sales to the Middle East and Africa.