Information on Business Segments (Capital Spend by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total capital spend	$ 32.8	$ 34.1	$ 31.0
ACCO Brands North America
Segment Reporting Information [Line Items]
Total capital spend	21.7	24.3	16.3
ACCO Brands EMEA
Segment Reporting Information [Line Items]
Total capital spend	7.0	6.1	5.1
ACCO Brands International
Segment Reporting Information [Line Items]
Total capital spend	$ 4.1	$ 3.7	$ 9.6

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration