| **Information On Business Segments** | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  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| **Segment Reporting [Abstract]**     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          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| Information on Business Segments     | 15. Information on Business SegmentsACCO Brands is one of the world's largest designers, marketers and manufacturers of branded business, academic and consumer products.The Company’s three business segments are described below.ACCO Brands North America and ACCO Brands InternationalACCO Brands North America and ACCO Brands International design, market, source, manufacture and sell traditional office products, academic supplies and calendar products. ACCO Brands North America comprises the U.S. and Canada, and ACCO Brands International comprises the rest of the world, primarily Northern Europe, Australia, Brazil and Mexico.On May 2, 2016, the Company completed the acquisition of the remaining 50% interest in its former joint-venture, Pelikan Artline, which it did not already own. Prior to the PA Acquisition, the Pelikan Artline joint venture was accounted for under the equity method. Accordingly, the results of Pelikan Artline are included in the Company's condensed consolidated financial statements from the date of the PA Acquisition, May 2, 2016. Pelikan Artline is a premier distributor of academic, consumer and business products in Australia and New Zealand. Pelikan Artline's product categories include writing instruments, notebooks, binding and lamination, visual communication, cleaning and janitorial supplies, as well as general stationery. Its industry-leading brands include Artline, Quartet and GBC (Pelikan Artline was ACCO Brands' distributor), Jastek, Spirax, and Texta, among others. Pelikan Artline has been included in the ACCO Brands International segment.Our business, academic and calendar product lines use name brands such as Artline, AT-A-GLANCE®, Day-Timer®, Five Star®, GBC®, Hilroy®, Marbig, Mead®, NOBO, Quartet®, Rexel, Swingline®, Tilibra®, Wilson Jones® and many others. Products and brands are not confined to one channel or product category and are sold based on end-user preference in each geographic location.The majority of our office products, such as stapling, binding and laminating equipment and related consumable supplies, shredders and whiteboards, are used by businesses. Most of these end-users purchase their products from our customers, which include traditional office supply resellers, wholesalers and other retailers, including on-line retailers. We also supply some of our products directly to large commercial and industrial end-users, and provide business machine maintenance and certain repair services. Additionally, we also supply private label products within the office products sector.Our academic products include notebooks, folders, decorative calendars and stationery products. We distribute our academic products primarily through mass merchandisers, and other retailers, such as grocery, drug and office superstores as well as on-line retailers. We also supply private label products within the academic products sector.Our calendar products are sold through all the same channels where we sell office or school products, as well as directly to consumers both on-line and through direct mail.Our customers are primarily large global and regional resellers of our products including traditional office supply resellers, wholesalers and other retailers, including on-line retailers. Mass merchandisers and retail channels primarily sell to individual consumers but also to small businesses. We also sell to commercial contract dealers, wholesalers, distributors and independent dealers who primarily serve business end-users. Over half of our product sales by our customers are to business end-users, who generally seek premium products that have added value or ease-of-use features and a reputation for reliability, performance and professional appearance. Some of our binding and laminating equipment products are sold directly to high-volume end-users and commercial reprographic centers. We also sell our directly to consumers.Computer Products GroupOur Computer Products Group designs, sources, distributes, markets and sells accessories for laptop and desktop computers and tablets. These accessories primarily include security products, input devices such as presenters, mice and trackballs, ergonomic aids such as foot and wrist rests, docking station, and other PC and tablet accessories. We sell these products mostly under the Kensington®, Microsaver® and ClickSafe® brand names, with the majority of revenue coming from the U.S. and Northern Europe. Our computer products are manufactured by third-party suppliers, principally in Asia, and are distributed from our regional facilities. Our computer products are sold primarily to consumer electronics retailers, information technology value-added resellers, original equipment manufacturers, and office products retailers, as well as directly to consumers on-line.Net sales by business segment for the three and six months ended June 30, 2016 and 2015 were as follows: Three Months Ended June 30, Six Months Ended June 30,(in millions of dollars)2016 2015 2016 2015ACCO Brands North America$279.1 $268.6 $444.8 $435.3ACCO Brands International101.3 96.7 186.6 191.3Computer Products Group29.7 29.4 56.8 58.1Net sales$410.1 $394.7 $688.2 $684.7Operating income by business segment for the three and six months ended June 30, 2016 and 2015 was as follows: Three Months Ended June 30, Six Months Ended June 30,(in millions of dollars)2016 2015 2016 2015ACCO Brands North America$51.6 $50.1 $61.9 $55.7ACCO Brands International2.9 6.2 6.7 9.5Computer Products Group3.2 2.2 4.9 4.2Segment operating income57.7 58.5 73.5 69.4Corporate(12.3) (9.3) (21.6) (17.6)Operating income(a)45.4 49.2 51.9 51.8Interest expense12.8 11.3 23.5 22.5Interest income(1.9) (2.3) (3.3) (3.4)Equity in earnings of joint venture(0.8) (1.2) (2.1) (2.6)Other (income) expense, net(36.6) 2.3 (35.5) 1.9Income before income tax$71.9 $39.1 $69.3 $33.4(a)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. |

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| - Definition
The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.
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