Information On Business Segments (Operating Income by Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]
Operating income	$ 50.3	[1]	$ 56.4	[1]	$ 79.0	[1]	$ 72.0	[1]
Interest expense, net	12.5		18.1		41.7		70.0
Equity in earnings of joint ventures	(3.3)		(3.6)		(5.9)		(6.3)
Other expense, net	0.1		0.3		9.6		61.4
Income (loss) from continuing operations before income tax	41.0		41.6		33.6		(53.1)
Segment operating income
Segment Reporting Information [Line Items]
Operating income	57.3	[1]	62.4	[1]	103.0	[1]	107.2	[1]
ACCO Brands North America
Segment Reporting Information [Line Items]
Operating income	36.1	[1]	40.0	[1]	61.6	[1]	50.1	[1]
ACCO Brands International
Segment Reporting Information [Line Items]
Operating income	17.8	[1]	14.7	[1]	32.3	[1]	31.9	[1]
Computer Products Group
Segment Reporting Information [Line Items]
Operating income	3.4	[1]	7.7	[1]	9.1	[1]	25.2	[1]
Corporate
Segment Reporting Information [Line Items]
Operating income	$ (7.0)	[1]	$ (6.0)	[1]	$ (24.0)	[1]	$ (35.2)	[1]

[1] Operating income as presented in the segment table above is defined as i) net sales; ii) less cost of products sold; iii) less advertising, selling, general and administrative expenses; iv) less amortization of intangibles; and v) less restructuring charges.