XML 61 R51.htm IDEA: XBRL DOCUMENT
v3.23.3

Pension and Other Retiree Benefits - Net Periodic Benefit Expense (Parenthetical) (Details) - Pension Plan [Member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
United States |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Special termination benefit | [1] | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0
International |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Special termination benefit | [1] | $ 0.0 | $ 0.8 | $ 0.0 | $ 0.8
[1] | Special termination benefit of $0.8 million due to the wind up of the ACCO Brands Canada Salaried and Hourly plans effective July 1, 2022. The plan wind up is considered an irrevocable event that triggers special accounting, specifically a one-time special termination benefit. The plan wind up is expected to be completed in 2024.

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in benefit obligation for benefits provided to employees payable from defined benefit plan or payable upon retirement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(10) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanSpecialTerminationBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |