Information on Business Segments (Depreciation Expense by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total depreciation	$ 35.6	$ 30.4	$ 32.4
Operating Segments | ACCO Brands North America
Segment Reporting Information [Line Items]
Total depreciation	17.7	19.7	23.3
Operating Segments | ACCO Brands EMEA
Segment Reporting Information [Line Items]
Total depreciation	11.9	5.0	3.4
Operating Segments | ACCO Brands International
Segment Reporting Information [Line Items]
Total depreciation	$ 6.0	$ 5.7	$ 5.7