| **Goodwill And Identifiable Intangibles (Goodwill) (Details) (USD $)In Millions, unless otherwise specified** | 9 Months Ended |
|---------------------------------------------------------------------------------------------------------------|----------------|
||
| **Goodwill [Roll Forward]**                                                                                   |           |
| Balance at December 31, 2013                                                                                  | $ 568.3        |
| Translation                                                                                                   | (10.1)         |
| Balance at September 30, 2014                                                                                 | 558.2          |
| **Goodwill, Impaired, Accumulated Impairment Loss**                                                           |           |
| Goodwill                                                                                                      | 773.3          |
| Accumulated impairment losses                                                                                 | (215.1)        |
| Balance at September 30, 2014                                                                                 | 558.2          |
| ACCO Brands North America                                                                                     |           |
| **Goodwill [Roll Forward]**                                                                                   |           |
| Balance at December 31, 2013                                                                                  | 393.1          |
| Translation                                                                                                   | (3.1)          |
| Balance at September 30, 2014                                                                                 | 390.0          |
| **Goodwill, Impaired, Accumulated Impairment Loss**                                                           |           |
| Goodwill                                                                                                      | 520.9          |
| Accumulated impairment losses                                                                                 | (130.9)        |
| Balance at September 30, 2014                                                                                 | 390.0          |
| ACCO Brands International                                                                                     |           |
| **Goodwill [Roll Forward]**                                                                                   |           |
| Balance at December 31, 2013                                                                                  | 168.4          |
| Translation                                                                                                   | (7.0)          |
| Balance at September 30, 2014                                                                                 | 161.4          |
| **Goodwill, Impaired, Accumulated Impairment Loss**                                                           |           |
| Goodwill                                                                                                      | 245.6          |
| Accumulated impairment losses                                                                                 | (84.2)         |
| Balance at September 30, 2014                                                                                 | 161.4          |
| Computer Products Group                                                                                       |           |
| **Goodwill [Roll Forward]**                                                                                   |           |
| Balance at December 31, 2013                                                                                  | 6.8            |
| Translation                                                                                                   | 0              |
| Balance at September 30, 2014                                                                                 | 6.8            |
| **Goodwill, Impaired, Accumulated Impairment Loss**                                                           |           |
| Goodwill                                                                                                      | 6.8            |
| Accumulated impairment losses                                                                                 | 0              |
| Balance at September 30, 2014                                                                                 | $ 6.8          |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267
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