10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

Form 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended September 30, 2021

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                     to                    .

Commission File Number 001-08454 

ACCO Brands Corporation

(Exact Name of Registrant as Specified in Its Charter)

Delaware	36-2704017
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification Number)

Four Corporate Drive

Lake Zurich, Illinois 60047

(Address of Registrant’s Principal Executive Office, Including Zip Code)

(847) 541-9500

(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.01 per share	ACCO	NYSE

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes  x    No  o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  x

As of October 21, 2021, the registrant had outstanding 95,730,863 shares of Common Stock.

Cautionary Statement Regarding Forward-Looking Statements

Certain statements contained in this Quarterly Report on Form 10-Q other than statements of historical fact, particularly those anticipating future financial performance, business prospects, growth, operating strategies and similar matters, including without limitation, statements concerning the impacts of the COVID-19 pandemic on the Company's business, operations, results of operations, liquidity and financial condition, are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on the beliefs and assumptions of management based on information available to us at the time such statements are made. These statements, which are generally identifiable by the use of the words "will," "believe," "expect," "intend," "anticipate," "estimate," "forecast," "project," "plan," and similar expressions, are subject to certain risks and uncertainties, are made as of the date hereof, and we undertake no duty or obligation to update them. Because actual results may differ materially from those suggested or implied by such forward-looking statements, you should not place undue reliance on them when deciding whether to buy, sell or hold the Company's securities.

Our outlook is based on certain assumptions, which we believe to be reasonable under the circumstances. These include, without limitation, assumptions regarding both the near-term and long-term impact of the COVID-19 pandemic on the economy and our business, our customers and the end-users of our products, and other changes in the macro environment; changes in the competitive landscape, including ongoing uncertainties in the traditional office products channels; as well as the impact of fluctuations in foreign currency and acquisitions and the other factors described below.

Factors that could affect our results or cause our plans, actions and results to differ materially from those expressed in the forward-looking statements contained in this Quarterly Report on Form 10-Q are detailed in "Part I, Item 1. Business" and "Part I, Item 1A. Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2020, in "Part II, Item 1A. Risk Factors" of the Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, as well as the financial statement line item discussions set forth in "Part I, Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q and from time to time in our other Securities and Exchange Commission (the "SEC") filings.

Website Access to Securities and Exchange Commission Reports

The Company’s Internet website can be found at www.accobrands.com. The Company makes available free of charge on or through its website its Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 as soon as practicable after the Company files them with, or furnishes them to, the SEC.

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TABLE OF CONTENTS

PART I — FINANCIAL INFORMATION	4
Item 1. Financial Statements	4
Condensed Consolidated Balance Sheets	4
Consolidated Statements of Operations	5
Consolidated Statements of Comprehensive Loss	6
Condensed Consolidated Statements of Cash Flows	7
Consolidated Statement of Stockholders’ Equity	8
Notes to Condensed Consolidated Financial Statements	10
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	33
Item 3. Quantitative and Qualitative Disclosures About Market Risk	44
Item 4. Controls and Procedures	44
PART II — OTHER INFORMATION	46
Item 1. Legal Proceedings	46
Item 1A. Risk Factors	46
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	46
Item 3. Defaults Upon Senior Securities	47
Item 4. Mine Safety Disclosures	47
Item 5. Other Information	47
Item 6. Exhibits	47
SIGNATURES	48

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PART I — FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

ACCO Brands Corporation and Subsidiaries

Condensed Consolidated Balance Sheets

	September 30, 2021		December 31, 2020
(in millions)	(unaudited)
Assets
Current assets:
Cash and cash equivalents	$	58.1	$	36.6
Accounts receivable, net	362.6		356.0
Inventories	413.9		305.1
Other current assets	52.0		30.5
Total current assets	886.6		728.2
Total property, plant and equipment	656.3		657.8
Less: accumulated depreciation	(436.8)		(416.4)
Property, plant and equipment, net	219.5		241.4
Right of use asset, leases	84.0		89.2
Deferred income taxes	126.6		136.5
Goodwill	804.2		827.4
Identifiable intangibles, net	919.4		977.0
Other non-current assets	31.7		49.0
Total assets	$	3,072.0	$	3,048.7
Liabilities and Stockholders' Equity
Current liabilities:
Notes payable	$	8.1	$	5.7
Current portion of long-term debt	28.1		70.8
Accounts payable	233.5		180.2
Accrued compensation	53.5		41.0
Accrued customer program liabilities	91.6		91.4
Lease liabilities	21.8		22.6
Current portion of contingent consideration	22.8		10.4
Other current liabilities	126.7		134.8
Total current liabilities	586.1		556.9
Long-term debt, net	1,083.9		1,054.6
Long-term lease liabilities	70.4		76.5
Deferred income taxes	156.6		170.6
Pension and post-retirement benefit obligations	275.9		317.1
Contingent consideration	11.9		7.8
Other non-current liabilities	102.2		122.5
Total liabilities	2,287.0		2,306.0
Stockholders' equity:
Common stock	1.0		1.0
Treasury stock	(40.8)		(39.9)
Paid-in capital	1,898.4		1,883.1
Accumulated other comprehensive loss	(565.4)		(564.2)
Accumulated deficit	(508.2)		(537.3)
Total stockholders' equity	785.0		742.7
Total liabilities and stockholders' equity	$	3,072.0	$	3,048.7

See Notes to Condensed Consolidated Financial Statements (Unaudited).

4

ACCO Brands Corporation and Subsidiaries

Consolidated Statements of Income

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions, except per share data)	2021		2020		2021		2020
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1
Cost of products sold	369.5		317.0		1,018.2		845.8
Gross profit	157.2		127.1		436.8		349.3
Operating costs and expenses:
Selling, general and administrative expenses	101.8		84.4		293.5		247.7
Amortization of intangibles	11.6		7.9		35.2		24.1
Restructuring charges	0.3		0.5		4.2		7.3
Change in fair value of contingent consideration	4.9		—		16.5		—
Total operating costs and expenses	118.6		92.8		349.4		279.1
Operating income	38.6		34.3		87.4		70.2
Non-operating expense (income):
Interest expense	11.2		10.2		36.0		28.7
Interest income	(0.6)		(0.2)		(1.2)		(0.8)
Non-operating pension income	(2.3)		(1.4)		(5.6)		(4.4)
Other expense, net	0.1		0.1		4.0		0.8
Income before income tax	30.2		25.6		54.2		45.9
Income tax expense	10.0		6.8		5.8		13.7
Net income	$	20.2	$	18.8	$	48.4	$	32.2
Per share:
Basic income per share	$	0.21	$	0.20	$	0.51	$	0.34
Diluted income per share	$	0.21	$	0.20	$	0.50	$	0.34
Weighted average number of shares outstanding:
Basic	95.6		94.5		95.4		95.0
Diluted	97.3		95.6		97.0		96.2

See Notes to Condensed Consolidated Financial Statements (Unaudited).

5

ACCO Brands Corporation and Subsidiaries

Consolidated Statements of Comprehensive Income (Loss)

(Unaudited)

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Net income	$	20.2	$	18.8	$	48.4	$	32.2
Other comprehensive income (loss), net of tax:
Unrealized income (loss) on derivative instruments, net of tax (expense) benefit of $(1.0) and $0.2 and $(2.9) and $0.3, respectively	2.4		(0.6)		6.7		(0.6)
Foreign currency translation adjustments, net of tax benefit (expense) of $0.2 and $0.1 and $(1.1) and $1.1, respectively	(22.3)		3.6		(18.6)		(53.7)
Recognition of deferred pension and other post-retirement items, net of tax (expense) benefit of $(2.1) and $1.2 and $(3.4) and $(1.7), respectively	6.6		(4.0)		10.7		5.8
Other comprehensive loss, net of tax	(13.3)		(1.0)		(1.2)		(48.5)
Comprehensive income (loss)	$	6.9	$	17.8	$	47.2	$	(16.3)

See Notes to Condensed Consolidated Financial Statements (Unaudited).

6

ACCO Brands Corporation and Subsidiaries

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Nine Months Ended September 30,
(in millions)	2021		2020
Operating activities
Net income	$	48.4	$	32.2
Amortization of inventory step-up	3.0		—
Change in fair value of contingent liability	16.5		—
Depreciation	29.4		28.2
Other non-cash items	—		0.5
Amortization of debt issuance costs	2.1		1.7
Amortization of intangibles	35.2		24.1
Stock-based compensation	12.2		5.2
Loss on debt extinguishment	3.7		—
Changes in balance sheet items:
Accounts receivable	(18.3)		78.7
Inventories	(116.2)		(28.4)
Other assets	(14.4)		(1.0)
Accounts payable	55.1		(67.1)
Accrued expenses and other liabilities	3.2		(47.3)
Accrued income taxes	(15.9)		(5.0)
Net cash provided by operating activities	44.0		21.8
Investing activities
Additions to property, plant and equipment	(13.9)		(11.8)
Cost of acquisitions, net of cash acquired	15.4		0.6
Net cash provided (used) by investing activities	1.5		(11.2)
Financing activities
Proceeds from long-term borrowings	651.4		231.5
Repayments of long-term debt	(638.8)		(146.4)
Proceeds of notes payable, net	2.3		2.5
Payment for debt premium	(9.8)		—
Payments for debt issuance costs	(10.5)		(1.6)
Dividends paid	(18.6)		(18.4)
Repurchases of common stock	—		(18.9)
Payments related to tax withholding for stock-based compensation	(0.9)		(1.8)
Proceeds from the exercise of stock options	2.4		1.7
Net cash (used) provided by financing activities	(22.5)		48.6
Effect of foreign exchange rate changes on cash and cash equivalents	(1.5)		(1.2)
Net increase in cash and cash equivalents	21.5		58.0
Cash and cash equivalents
Beginning of the period	36.6		27.8
End of the period	$	58.1	$	85.8
Cash paid during the year for:
Interest	$	33.7	$	21.4
Income taxes	$	21.2	$	20.1

See Notes to Condensed Consolidated Financial Statements (Unaudited).

7

ACCO Brands Corporation and Subsidiaries

Consolidated Statement of Stockholders' Equity

(Unaudited)

(in millions)	Common Stock		Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Treasury Stock		Accumulated Deficit		Total
Balance at December 31, 2020	$	1.0	$	1,883.1	$	(564.2)	$	(39.9)	$	(537.3)	$	742.7
Net loss	—		—		—		—		(20.4)		(20.4)
Gain on derivative financial instruments, net of tax	—		—		4.1		—		—		4.1
Translation impact, net of tax	—		—		(20.7)		—		—		(20.7)
Pension and post-retirement adjustment, net of tax	—		—		3.6		—		—		3.6
Stock-based compensation	—		5.0		—		—		(0.2)		4.8
Common stock issued, net of shares withheld for employee taxes	—		1.9		—		(0.9)		—		1.0
Dividends declared, $.065 per share	—		—		—		—		(6.2)		(6.2)
Other	—		(0.1)		—		—		—		(0.1)
Balance at March 31, 2021	1.0		1,889.9		(577.2)		(40.8)		(564.1)		708.8
Net income	—		—		—		—		48.6		48.6
Gain on derivative financial instruments, net of tax	—		—		0.2		—		—		0.2
Translation impact, net of tax	—		—		24.4		—		—		24.4
Pension and post-retirement adjustment, net of tax	—		—		0.5		—		—		0.5
Stock-based compensation	—		4.4		—		—		(0.2)		4.2
Common stock issued, net of shares withheld for employee taxes	—		0.1		—		—		—		0.1
Dividends declared, $.065 per share	—		—		—		—		(6.2)		(6.2)
Other	—		0.2		—		—		(0.1)		0.1
Balance at June 30, 2021	1.0		1,894.6		(552.1)		(40.8)		(522.0)		780.7
Net income	—		—		—		—		20.2		20.2
Gain on derivative financial instruments, net of tax	—		—		2.4		—		—		2.4
Translation impact	—		—		(22.3)		—		—		(22.3)
Pension and post-retirement adjustment, net of tax	—		—		6.6		—		—		6.6
Stock-based compensation	—		3.4		—		—		(0.2)		3.2
Common stock issued, net of shares withheld for employee taxes	—		0.4		—		—		—		0.4
Dividends declared, $.0.065 per share	—		—		—		—		(6.2)		(6.2)
Balance at September 30, 2021	$	1.0	$	1,898.4	$	(565.4)	$	(40.8)	$	(508.2)	785.0

Shares of Capital Stock

	Common Stock	Treasury Stock	Net Shares
Shares at December 31, 2020	99,129,455	4,186,890	94,942,565
Common stock issued, net of shares withheld for employee taxes	652,755	109,599	543,156
Shares at March 31, 2021	99,782,210	4,296,489	95,485,721
Common stock issued, net of shares withheld for employee taxes	97,160	—	97,160
Shares at June 30, 2021	99,879,370	4,296,489	95,582,881
Common stock issued, net of shares withheld for employee taxes	84,954	5,766	79,188
Shares at September 30, 2021	99,964,324	4,302,255	95,662,069

See Notes to Condensed Consolidated Financial Statements (Unaudited).

8

ACCO Brands Corporation and Subsidiaries

Consolidated Statement of Stockholders' Equity

Continued (Unaudited)

(in millions)	Common Stock		Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Treasury Stock		Accumulated Deficit		Total
December 31, 2019	$	1.0	$	1,890.8	$	(505.7)	$	(38.2)	$	(574.2)	$	773.7
Net income	—		—		—		—		8.0		8.0
Gain on derivative financial instruments, net of tax	—		—		2.4		—		—		2.4
Translation impact, net of tax	—		—		(49.7)		—		—		(49.7)
Pension and post-retirement adjustment, net of tax	—		—		7.9		—		—		7.9
Common stock repurchases	—		(18.9)		—		—		—		(18.9)
Stock-based compensation	—		0.9		—		—		—		0.9
Common stock issued, net of shares withheld for employee taxes	—		1.5		—		(1.7)		—		(0.2)
Dividends declared, $.065 per share	—		—		—		—		(6.2)		(6.2)
Balance at March 31, 2020	1.0		1,874.3		(545.1)		(39.9)		(572.4)		717.9
Net income	—		—		—		—		5.4		5.4
Loss on derivative financial instruments, net of tax	—		—		(2.4)		—		—		(2.4)
Translation impact, net of tax	—		—		(7.6)		—		—		(7.6)
Pension and post-retirement adjustment, net of tax	—		—		1.9		—		—		1.9
Stock-based compensation	—		2.6		—		—		(0.1)		2.5
Dividends declared, $.065 per share	—		—		—		—		(6.1)		(6.1)
Balance at June 30, 2020	1.0		1,876.9		(553.2)		(39.9)		(573.2)		711.6
Net income	—		—		—		—		18.8		18.8
Loss on derivative financial instruments, net of tax	—		—		(0.6)		—		—		(0.6)
Translation impact	—		—		3.6		—		—		3.6
Pension and post-retirement adjustment, net of tax	—		—		(4.0)		—		—		(4.0)
Stock-based compensation	—		1.9		—		—		(0.1)		1.8
Common stock issued, net of shares withheld for employee taxes	—		0.1		—		—		—		0.1
Dividends declared, $.065 per share	—		—		—		—		(6.1)		(6.1)
Balance at September 30, 2020	$	1.0	$	1,878.9	$	(554.2)	$	(39.9)	$	(560.6)	$	725.2

Shares of Capital Stock

	Common Stock	Treasury Stock	Net Shares
Shares at December 31, 2019	100,412,933	3,967,445	96,445,488
Common stock issued, net of shares withheld for employee taxes	898,664	206,243	692,421
Common stock repurchases	(2,690,292)	—	(2,690,292)
Shares at March 31, 2020	98,621,305	4,173,688	94,447,617
Common stock issued, net of shares withheld for employee taxes	26,957	12,427	14,530
Shares at June 30, 2020	98,648,262	4,186,115	94,462,147
Common stock issued, net of shares withheld for employee taxes	35,465	775	34,690
Shares at September 30, 2020	98,683,727	4,186,890	94,496,837

See Notes to Condensed Consolidated Financial Statements (Unaudited).

9

ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited)

1. Basis of Presentation

As used in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, the terms "ACCO Brands," "ACCO," the "Company," "we," "us," and "our" refer to ACCO Brands Corporation and its consolidated subsidiaries.

The management of ACCO Brands Corporation is responsible for the accuracy and internal consistency of the preparation of the condensed consolidated financial statements and notes contained in this Quarterly Report on Form 10-Q.

The condensed consolidated interim financial statements have been prepared pursuant to the rules and regulations of the SEC. Although the Company believes the disclosures are adequate to make the information presented not misleading, certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles in the U.S. ("GAAP") have been condensed or omitted pursuant to those rules and regulations. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.

The Condensed Consolidated Balance Sheet as of September 30, 2021, the related Consolidated Statements of Income, the Consolidated Statements of Comprehensive Income (Loss), the Consolidated Statements of Stockholders' Equity for the three and nine months ended September 30, 2021 and 2020 and Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2021 and 2020 are unaudited. The December 31, 2020 Condensed Consolidated Balance Sheet data was derived from audited financial statements but does not include all annual disclosures required by GAAP. The financial statements included herein were prepared by management and reflect all adjustments (consisting solely of normal recurring items unless otherwise noted) which are, in the opinion of management, necessary for the fair presentation of results of operations and cash flows for the interim periods ended September 30, 2021 and 2020, and the financial position of the Company as of September 30, 2021. Interim results may not be indicative of results for a full year.

Effective December 17, 2020, we completed the acquisition of PowerA (the "PowerA Acquisition"), a leading provider of third-party video gaming console accessories primarily in North America. The results of PowerA are included in all three of the Company's operating business segments effective December 17, 2020. The purchase price was $321.8 million, plus an additional earnout of up to $55.0 million in cash, which is contingent upon PowerA achieving one- and two- year sales and profit growth objectives and has a fair value of $34.7 million as of September 30, 2021. The PowerA Acquisition and related expenses were funded by cash on hand, as well as borrowings from our revolving credit facility. See "Note 3. Acquisitions" for details on the PowerA Acquisition.

On April 1, 2021, we completed the acquisition of Franken Planungs-und Organisationsmittel GmbH (“Franken”), for a purchase price of €2.4 million (US$2.8 million, based on April 1, 2021 exchange rates), net of cash acquired of $1.1 million. Franken is a provider of visual communication products, including boards, markers, planning tools, as well as creative and training products. Franken is a German company that is included in the Company’s EMEA reporting segment.

The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported assets and liabilities at the date of the financial statements and the reported revenues and expenses during the reporting periods. Actual results could differ from those estimates.

2. Recent Accounting Pronouncements and Adopted Accounting Standards

Recent Accounting Pronouncements

In March 2020, the Financial Accounting Standards Board ("FASB") issued ASU 2020-04, Reference Rate Reform (Topic 848), which provides optional expedients and exceptions for applying current GAAP to contracts, hedging relationships, and other transactions affected by the transition from the use of LIBOR to an alternative reference rate. We are currently evaluating our contracts and hedging relationships that reference LIBOR and the potential effects of adopting this new guidance. The guidance can be adopted immediately and is applicable to contracts entered into on or before December 31, 2022.

There are no other recently issued accounting standards that are expected to have an impact on the Company’s financial condition, results of operations or cash flow.

10

ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

Recently Adopted Accounting Standards

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which removes certain exceptions for investments, intraperiod allocations and interim calculations, and adds guidance to reduce complexity in accounting for income taxes. Effective January 1, 2021, the Company adopted this standard. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.

There were no other accounting standards that were adopted in the first nine months of 2021 that had a material effect on the Company’s financial condition, results of operations or cash flow.

3. Acquisitions

Acquisition of Franken

On April 1, 2021, we completed the acquisition of Franken, for a purchase price of €2.4 million (US$2.8 million, based on April 1, 2021 exchange rates), net of cash acquired of $1.1 million. Franken is a provider of visual communication products, including boards, markers, planning tools, as well as creative and training products. Franken is a German company that is included in the Company’s EMEA reporting segment.

Pro forma financial information is not presented due to immateriality.

Acquisition of PowerA

Effective December 17, 2020, we completed the acquisition of PowerA, a leading provider of third-party video gaming console accessories primarily in North America. The results of PowerA are included in all three of the Company's reporting units effective December 17, 2020.

The purchase price was $321.8 million, net of a working capital adjustment received of $18.2 million, plus an additional earnout of up to $55.0 million in cash. The earnout is contingent upon PowerA achieving one- and two- year sales and profit growth objectives. The fair value of the contingent earnout liability was $34.7 million as of September 30, 2021. The PowerA Acquisition and related expenses were funded by cash on hand, as well as borrowings from our revolving credit facility.

For accounting purposes, the Company was the acquiring enterprise. The PowerA Acquisition is being accounted for as a purchase business combination and PowerA's results are included in the Company’s consolidated financial statements as of December 31, 2020. The additional net sales from PowerA during the three and nine months ended September 30, 2021 were $56.8 million and $170.2 million, respectively.

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ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

During the third quarter of 2021 we finalized our fair value estimate of assets acquired and liabilities assumed as of the acquisition date. The following table presents the allocation of the consideration given to the fair values of the assets acquired and liabilities assumed at the date of the PowerA Acquisition:

(in millions)	At December 17, 2020
Calculation of Goodwill:
Purchase price, net of working capital adjustment	$	321.8
Fair value of contingent consideration	$	18.2
Plus fair value of liabilities assumed:
Accrued liabilities	9.2
Fair value of liabilities assumed	$	9.2
Less fair value of assets acquired:
Inventory	29.3
Property and equipment	0.2
Identifiable intangibles	235.4
Other assets	13.2
Fair value of assets acquired	$	278.1
Goodwill	$	71.1

During the year ended December 31, 2020, transaction costs related to the PowerA Acquisition were $3.7 million, and for the nine months ended September 30, 2021, they were $0.1 million. These costs were reported as SG&A expenses in the Company's Consolidated Statements of Income.

Unaudited Pro Forma Consolidated Results

The unaudited pro forma information presented below is not intended to represent, nor do we believe it is indicative of, the consolidated results of operations of the Company that would have been reported had the PowerA Acquisition been completed on January 1, 2019. Furthermore, the unaudited pro forma information does not give effect to the anticipated synergies or other anticipated benefits of the PowerA Acquisition.

Had the PowerA Acquisition occurred on January 1, 2019, unaudited pro forma consolidated results of the Company for the three and nine months ended September 30, 2021 and 2020 would have been as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Net sales	$	526.7	$	501.4	$	1,455.0	$	1,325.5
Net income	20.2		24.9		48.4		41.6
Net income per diluted common share	$	0.21	$	0.26	$	0.50	$	0.43

The pro forma amounts are based on the Company's historical results and the historical results for the acquired PowerA business. The pro forma results of operations have been adjusted to include amortization of finite-lived intangibles, and other charges related to the accounting by the Company for the PowerA Acquisition.

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ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

4. Long-term Debt and Short-term Borrowings

Notes payable and long-term debt, listed in order of the priority of security interests in assets of the Company, consisted of the following as of September 30, 2021 and December 31, 2020:

(in millions)	September 30, 2021		December 31, 2020
Euro Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.25% at September 30, 2021)	$	264.3	$	—
Euro Senior Secured Term Loan A, due May 2024 (floating interest rate of 2.50% at December 31, 2020)	—		287.4
USD Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.38% at September 30, 2021)	90.2		—
USD Senior Secured Term Loan A, due May 2024 (floating interest rate of 3.50% at December 31, 2020)	—		92.5
Australian Dollar Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.32% at September 30, 2021)	39.5		—
Australian Dollar Senior Secured Term Loan A, due May 2024 (floating interest rate of 2.57% at December 31, 2020)	—		43.4
U.S. Dollar Senior Secured Revolving Credit Facility, due March 2026 (floating interest rate of 2.33% at September 30, 2021)	120.4		—
U.S. Dollar Senior Secured Revolving Credit Facility, due May 2024 (floating interest rate of 3.50% at December 31, 2020)	—		307.2
Australian Dollar Senior Secured Revolving Credit Facility, due March 2026 (floating interest rate of 2.31% at September 30, 2021)	32.6		—
Australian Dollar Senior Secured Revolving Credit Facility, due May 2024 (floating interest rate of 2.57% at December 31, 2020)	—		25.4
Senior Unsecured Notes, due March 2029 (fixed interest rate of 4.25%)	575.0		—
Senior Unsecured Notes, due December 2024 (fixed interest rate of 5.25%)	—		375.0
Other borrowings	8.1		5.7
Total debt	1,130.1		1,136.6
Less:
Current portion	36.2		76.5
Debt issuance costs, unamortized	10.0		5.5
Long-term debt, net	$	1,083.9	$	1,054.6

The Company entered into a Third Amended and Restated Credit Agreement (the "Credit Agreement"), dated as of January 27, 2017, among the Company, certain subsidiaries of the Company, Bank of America, N.A., as administrative agent, and the other agents and various lenders party thereto. The Credit Agreement provided for a five-year senior secured credit facility, which consisted of a €300.0 million (US$320.8 million based on January 27, 2017, exchange rates) term loan facility (the "Euro Term Loan"), an A$80.0 million (US$60.4 million based on January 27, 2017, exchange rates) term loan facility (the "Australian Term Loan"), and a US$400.0 million multi-currency revolving credit facility (the "Revolving Facility").

Effective July 26, 2018, the Company entered into the First Amendment (the "First Amendment") to the Credit Agreement. The First Amendment increased the aggregate revolving credit commitments under the Revolving Facility by $100.0 million such that, after giving effect to such increase, the aggregate amount of revolving credit available under the Revolving Facility was $500.0 million. In addition, the First Amendment also affected certain technical amendments to the Credit Agreement, including the addition of provisions relating to LIBOR successor rate procedures if LIBOR becomes unascertainable or is discontinued in the future and to expressly permit certain intercompany asset transfers. The changes related to LIBOR successor rate procedures are not expected to have a material effect on the Company.

Effective May 23, 2019, the Company entered into a Second Amendment (the "Second Amendment") to the Credit Agreement. Pursuant to the Second Amendment, the Credit Agreement was amended to, among other things:

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ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

•extend the maturity date to May 23, 2024;

•further increase the aggregate revolving credit commitments under the Revolving Facility from $500.0 million to $600.0 million;

•establish a new term loan facility denominated in U.S. Dollars in an aggregate principal amount of $100.0 million (the "USD Term Loan");

•replace the minimum fixed coverage ratio of 1.25:1.00 with a minimum Interest Coverage Ratio (as defined in the Credit Agreement) of 3.00:1.00; and

•reflect a more favorable restricted payment covenant, with the Consolidated Leverage Ratio (as defined in the Credit Agreement) hurdle for unlimited restricted payments (including share repurchases and dividends) as calculated under the Credit Agreement increasing from 2.50:1.00 to 3.25:1.00.

Effective May 1, 2020, the Company entered into a Third Amendment (the "Third Amendment") to the Credit Agreement pursuant to which the Credit Agreement was amended to, among other things:

•increase the maximum Consolidated Leverage Ratio from 3.75:1.00 to 4.75:1.00, stepping back down to 3.75:1.00 for the first fiscal quarter ending after June 30, 2021;

•amend the pricing based on the Company’s Consolidated Leverage Ratio, with a scaled increase in interest rates and fees, effective May 1, 2020;

•reduce the Company’s capacity to incur certain other indebtedness, and impose additional limitations on certain restricted payments (other than dividends) and permitted acquisitions; and

•require that the Company pay down any amounts on the Revolving Facility when cash and cash equivalents of the loan parties exceed $100.0 million.

In connection with the PowerA Acquisition, effective November 10, 2020, the Company entered into a Fourth Amendment (the "Fourth Amendment") to the Credit Agreement pursuant to which the Credit Agreement was amended to, among other things:

•provide flexibility under the permitted acquisition provisions to accommodate the acquisition of PowerA;

•further amend the maximum Consolidated Leverage Ratio financial covenant for each of the six fiscal quarters beginning March 31, 2021 and ending June 30, 2022, as follows:

Quarter Ended	Maximum Consolidated Leverage Ratio
March 2021	5.25:1.00
June 2021	5.25:1.00
September 2021	4.75:1.00
December 2021	4.25:1.00
March 2022	4.25:1.00
June 2022	4.25:1.00
September 2022 and thereafter	3.75:1.00

•exempt the borrowings made under the Credit Agreement, as amended, to fund the PowerA Acquisition from the Credit Agreement’s anti-cash hoarding clause.

We incurred and capitalized approximately $3.2 million in bank, legal and other fees associated with the Third and Fourth Amendments.

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ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

Effective March 31, 2021, the Company entered into a Fifth Amendment (the “Fifth Amendment”) to the Credit Agreement. Pursuant to the Fifth Amendment, the Credit Agreement was amended to, among other things:

•further extend the maturity date from May 23, 2024 to March 31, 2026;

•further modify the maximum Consolidated Leverage Ratio financial covenant such that for the fiscal quarter ending September 30, 2022 and thereafter, the maximum leverage ratio is set at 4.00:1.00;

•reflect more favorable pricing at higher Consolidated Leverage Ratio levels along with lower fees on undrawn amounts, as follows:

Consolidated Leverage Ratio	Applicable Rate on Euro/AUD/CDN Dollar Loans	Applicable Rate on Base Rate Loans	Undrawn Fee
> 4.50 to 1.00	2.50%	1.50%	0.500%
≤ 4.50 to 1.00 and > 4.00 to 1.00	2.25%	1.25%	0.375%
≤ 4.00 to 1.00 and > 3.50 to 1.00	2.00%	1.00%	0.350%
≤ 3.50 to 1.00 and > 3.00 to 1.00	1.75%	0.75%	0.300%
≤ 3.00 to 1.00 and > 2.00 to 1.00	1.50%	0.50%	0.250%
≤ 2.00 to 1.00	1.25%	0.25%	0.200%

•eliminate the LIBOR rate floor for U.S. dollar loans.

Under the Fifth Amendment, pricing was locked at LIBOR plus 2.25 percent until the Company published its financial results for the fiscal quarter ended June 30, 2021, and it became subject to the above leverage-based pricing grid thereafter.

Senior Unsecured Notes

On March 15, 2021, the Company completed a private offering of $575.0 million in aggregate principal amount of 4.25% Senior Notes due March 2029 (the "New Notes"), which were issued under an indenture, dated as of March 15, 2021 (the "New Indenture"), among the Company, as issuer, the guarantors named therein and Wells Fargo Bank, National Association, as trustee. Interest on the New Notes is payable semiannually on March 15 and September 15 of each year, beginning on September 15, 2021.

The New Notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by each of the Company’s existing and future U.S. subsidiaries, other than certain excluded subsidiaries.

The New Indenture contains covenants that limit the ability of the Company and its restricted subsidiaries’ ability to, among other things: (i) incur additional indebtedness or issue disqualified stock or, in the case of the Company’s restricted subsidiaries, preferred stock; (ii) create liens; (iii) pay dividends, make certain investments or make other restricted payments; (iv) sell certain assets or merge with or into other companies; (v) enter into transactions with affiliates; and (vi) in the case of a restricted subsidiary, pay dividends, loans, or assets to the Company or other restricted subsidiaries. These covenants are subject to a number of important limitations and exceptions. The New Indenture also provides for events of default, which, if any of them occurs, would permit or require the principal, premium, if any, and accrued but unpaid interest on all the then outstanding New Notes to be immediately due and payable.

In addition, effective March 15, 2021, the Company irrevocably deposited with the trustee of its 5.25% Senior Notes due 2024 (the "Prior Notes") an amount necessary to pay the aggregate redemption price for the Prior Notes, and satisfied and discharged all its obligations related to the Prior Notes indenture. Proceeds from the offering of the New Notes were applied toward the payment of the aggregate redemption price for the Prior Notes, the repayment of approximately $178.0 million of the Company’s outstanding borrowings under its Revolving Facility and to pay fees and expenses related to the offering of the New Notes. The Prior Notes were redeemed on March 31, 2021 at an aggregate redemption price of $390.6 million, consisting

15

ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

of $375 million of the principal due and payable on the Prior Notes, a call premium of $9.8 million (included in "Other expense, net"), and accrued and unpaid interest of $5.8 million (included in "Interest expense").

Also included in "Other expense, net" is a $3.7 million charge for the write-off of debt issuance costs. Additionally, we incurred and capitalized approximately $8.2 million in bank, legal and other fees associated with the issuance of the New Notes.

As of September 30, 2021, there were $153.0 million in borrowings outstanding under the Revolving Facility. The remaining amount available for borrowings was $434.5 million (allowing for $12.5 million of letters of credit outstanding on that date).

As of September 30, 2021, our Consolidated Leverage Ratio was approximately 3.8 to 1.00 versus our maximum covenant of 4.75 to 1.00.

5. Leases

The Company leases its corporate headquarters, various other facilities for distribution, manufacturing, and offices, as well as vehicles, forklifts and other equipment. The Company determines if an arrangement is a lease at inception. Leases are included in "Right of use asset, leases" ("ROU Assets"), and the current portion of the lease liability is included in "Lease liabilities" and the non-current portion is included in "Long-term lease liabilities" in the Condensed Consolidated Balance Sheets. The Company currently has an immaterial amount of financing leases and leases with terms of more than one month and less than 12 months. ROU Assets and lease liabilities are recognized based on the present value of lease payments over the lease term. Because most of the Company’s leases do not provide an implicit rate of return, the Company uses its incremental collateralized borrowing rate, on a regional basis, in determining the present value of lease payments. The incremental borrowing rate is dependent upon the duration of the lease and has been segmented into three groups of time. All leases within the same region and the same group of time share the same incremental borrowing rate. The Company has lease agreements with lease and non-lease components, which are combined for accounting purposes for all classes of assets except information technology equipment.

The components of lease expense were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Operating lease cost	$	8.1	$	6.7	$	22.3	$	21.0
Sublease income	(0.9)		(0.2)		(1.5)		(0.9)
Total lease cost	$	7.2	$	6.5	$	20.8	$	20.1

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ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

Other information related to leases was as follows:

	Nine Months Ended September 30,
(in millions, except lease term and discount rate)	2021			2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	23.8		$	21.5
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	15.0			3.3
	As of
	September 30, 2021
Weighted average remaining lease term:
Operating leases	6.15 years
Weighted average discount rate:
Operating leases	5.1		%

Future minimum lease payments, net of sub-lease income, for all non-cancelable leases as of September 30, 2021, were as follows:

(in millions)
2021	$	6.9
2022	24.1
2023	18.3
2024	14.8
2025	12.0
2026	9.4
Thereafter	24.2
Total minimum lease payments	109.7
Less imputed interest	17.4
Future minimum payments for leases, net of sublease rental income and imputed interest	$	92.3

17

ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

6. Pension and Other Retiree Benefits

The components of net periodic benefit (income) cost for pension and post-retirement plans for the three and nine months ended September 30, 2021 and 2020 were as follows: 

	Three Months Ended September 30,
	Pension								Post-retirement
	U.S.				International
(in millions)	2021		2020		2021		2020		2021		2020
Service cost	$	—	$	0.4	$	0.4	$	0.4	$	—	$	—
Interest cost	1.2		1.5		1.5		2.4		—		—
Expected return on plan assets	(2.9)		(2.8)		(4.7)		(4.7)		—		—
Amortization of net loss (gain)	0.9		0.8		1.7		1.3		(0.1)		(0.1)
Amortization of prior service cost	—		0.1		0.1		0.1		—		—
Net periodic benefit cost (income) (1)	$	(0.8)	$	—	$	(1.0)	$	(0.5)	$	(0.1)	$	(0.1)
	Nine Months Ended September 30,
	Pension								Post-retirement
	U.S.				International
(in millions)	2021		2020		2021		2020		2021		2020
Service cost	$	0.5	$	1.2	$	1.2	$	1.1	$	—	$	—
Interest cost	3.4		4.4		4.7		7.2		—		0.1
Expected return on plan assets	(8.5)		(8.5)		(14.5)		(13.8)		—		—
Amortization of net loss (gain)	2.7		2.4		5.3		3.7		(0.3)		(0.4)
Amortization of prior service cost	0.1		0.3		0.2		0.2		—		—
Curtailment loss(2)	1.4		—		—		—		—		—
Net periodic benefit cost (income) (1)	$	(0.4)	$	(0.2)	$	(3.1)	$	(1.6)	$	(0.3)	$	(0.3)

(1)The components of net periodic benefit cost (income), other than service cost, are included in the line "Non-operating pension income" in the Consolidated Statements of Income.

(2)Curtailment loss of $1.4 million due to the pension benefit freeze for the Sidney group under the ACCO Brands Corporation Pension Plan.

We expect to contribute approximately $22.8 million to our defined benefit plans in 2021. For the nine months ended September 30, 2021, we have contributed $16.4 million to these plans.

7. Stock-Based Compensation

The following table summarizes our stock-based compensation expense (including stock options, restricted stock units ("RSUs") and performance stock units ("PSUs")) for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Stock option compensation expense	$	0.6	$	0.5	$	2.9	$	2.1
RSU compensation expense	0.9		1.3		4.3		4.3
PSU compensation expense	1.7		—		5.0		(1.2)
Total stock-based compensation expense	$	3.2	$	1.8	$	12.2	$	5.2

We generally recognize compensation expense for stock-based awards ratably over the vesting period. Stock-based compensation expense for the three and nine months ended September 30, 2021 includes $0.2 million and $0.4 million of expense related to stock awards granted to eligible non-employee directors, respectively. For each of the three and nine months ended September 30, 2020, stock-based compensation expense includes $1.0 million of expense related to stock awards granted to non-employee directors.

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ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

During the third quarter of 2021, stock compensation grants were made consisting of 4,773 stock options, 22,288 RSUs and 2,864 PSUs.

The following table summarizes our unrecognized compensation expense and the weighted-average period over which the expense will be recognized as of September 30, 2021:

	September 30, 2021
	Unrecognized	Weighted Average
	Compensation	Years Expense To Be
(in millions, except weighted average years)	Expense	Recognized Over
Stock options	$3.9	1.9
RSUs	$4.3	1.7
PSUs	$10.7	1.8

8. Inventories

The components of inventories were as follows:

(in millions)	September 30, 2021		December 31, 2020
Raw materials	$	44.7	$	36.8
Work in process	4.3		3.5
Finished goods	364.9		264.8
Total inventories	$	413.9	$	305.1

9. Goodwill and Identifiable Intangible Assets

Goodwill

We test goodwill for impairment at least annually and on an interim basis if an event or circumstance indicates that it is more likely than not that an impairment loss has been incurred. Historically, we performed this annual test using June 30th as the measurement date. During the second quarter of 2021, we elected to change the measurement date of our annual impairment test from June 30th to May 31st. A measurement date of May 31st is preferable as it better aligns with the timing of our forecasting process.

During the second quarter of 2021, we completed the annual goodwill impairment assessment, on a quantitative basis, for goodwill for each of our three reporting units. The result of our annual assessment was that the fair value of the North America, International and EMEA reporting units exceeded their carrying values as of our measurement date of May 31, 2021 and we concluded that no impairment existed.

Estimating the fair value of each reporting unit requires us to make assumptions and estimates regarding our future. We utilized a combination of both a discounted cash flows and market approach. The financial projections used in the valuation models reflected management's assumptions regarding revenue growth rates, economic and market trends, cost structure, and other expectations about the anticipated short-term and long-term operating results for each of our three reporting units.

In management’s opinion, the goodwill balance for the International reporting unit could be at risk for impairment if operating performance does not recover as expected from the current impacts of COVID-19, if we experience negative changes to the long-term outlook for the business, or changes in factors and assumptions which impact the fair value of the reporting unit such as low or declining revenue growth rates, depressed operating margins or adverse changes to the discount rates impacting this reporting unit.

19

ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

Changes in the net carrying amount of goodwill by segment were as follows:

(in millions)	ACCO Brands North America		ACCO Brands EMEA		ACCO Brands International		Total
Balance at December 31, 2020	$	461.2	$	188.2	$	178.0	$	827.4
Acquisitions(1)	(14.5)		2.0		—		(12.5)
Foreign currency translation	—		(10.2)		(0.5)		(10.7)
Balance at September 30, 2021	$	446.7	$	180.0	$	177.5	$	804.2

(1)Goodwill has been recorded on our Consolidated Balance Sheet related to the Franken acquisition, which is part of our EMEA segment, and represents the excess of the cost of the Franken acquisition when compared to the fair value estimate of the net assets acquired on April 1, 2021 (the date of the Franken acquisition). Goodwill has been recorded on our Consolidated Balance Sheet related to the PowerA Acquisition and represents the excess of the cost of the PowerA Acquisition when compared to the fair value estimate of the net assets acquired on December 17, 2020 (the date of the PowerA Acquisition) and includes a working capital adjustment of $18.2 million recorded in the first quarter of 2021 as a reduction to the purchase price, partially offset by purchase accounting adjustments of $3.7 million. See "Note 3. Acquisitions" for details on the calculation of the goodwill acquired in the PowerA Acquisition.

The goodwill balance includes $215.1 million of accumulated impairment losses, which occurred prior to December 31, 2016.

Identifiable Intangible Assets

PowerA Acquisition

The valuation of identifiable intangible assets of $235.4 million acquired in the PowerA Acquisition includes amortizable customer relationships, vendor relationships, trade names and developed technology, which have been recorded at their estimated fair values. The fair value of the customer relationships was determined using the multi-period excess earnings method which is based on the present value of the projected after-tax cash flows. The fair value of the vendor relationships was determined using the lost income method. The fair value of the trade name and the developed technology was determined using the relief from royalty method, which is based on the present value of royalty fees derived from projected revenues. The determination of the acquisition date fair value of the intangible assets required the Company to make significant estimates and assumptions regarding future revenue growth rates, future cost of sales, operating expenses and earnings before income tax, attrition rate, future cash flows without vendor relationships and discount rates.

20

ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

The amortizable trade name, customer and vendor relationships will be amortized over 15 years while the developed technology will be amortized over 5 years on a straight-line basis. The allocation of the identifiable intangibles acquired in the PowerA Acquisition was as follows:

(in millions)	Fair Value		Remaining Useful Life
Trade name	$	21.6	15 years
Customer relationships	128.6		15 years
Vendor relationships	82.4		15 years
Developed technology	2.8		5 years
Total identifiable intangibles acquired	$	235.4

Intangible Assets

The gross carrying value and accumulated amortization by class of identifiable intangible assets as of September 30, 2021 and December 31, 2020, were as follows:

	September 30, 2021							December 31, 2020
(in millions)	Gross Carrying Amounts		Accumulated Amortization			Net Book Value		Gross Carrying Amounts		Accumulated Amortization			Net Book Value
Indefinite-lived intangible assets:
Trade names	$	420.5	$	(44.5)	(1)	$	376.0	$	467.5	$	(44.5)	(1)	$	423.0
Amortizable intangible assets:
Trade names	375.7		(107.2)			268.5		343.5		(97.7)			245.8
Customer and contractual relationships	368.7		(177.4)			191.3		376.8		(162.9)			213.9
Vendor relationships	82.4		(4.6)			77.8		87.7		(0.2)			87.5
Patents	8.6		(2.8)			5.8		8.9		(2.1)			6.8
Subtotal	835.4		(292.0)			543.4		816.9		(262.9)			554.0
Total identifiable intangibles	$	1,255.9	$	(336.5)		$	919.4	$	1,284.4	$	(307.4)		$	977.0

(1)Accumulated amortization prior to the adoption of authoritative guidance on goodwill and other intangible assets, at which time further amortization ceased.

The Company's intangible amortization expense for the three and nine months ended September 30, 2021 was $11.6 million and $35.2 million, respectively, and $7.9 million and $24.1 million for the three and nine months ended September 30, 2020, respectively.

Estimated amortization expense for amortizable intangible assets, as of September 30, 2021, for the current year and the next five years is as follows:

(in millions)	2021		2022		2023		2024		2025		2026
Estimated amortization expense(2)	$	47.1	$	43.9	$	41.5	$	39.8	$	38.1	$	35.8

(2)    Actual amounts of amortization expense may differ from estimated amounts due to changes in foreign currency exchange rates, additional intangible asset acquisitions, impairment of intangible assets, accelerated amortization of intangible assets and other events.

We test indefinite-lived intangibles for impairment at least annually and on an interim basis if an event or circumstance indicates that it is more likely than not that an impairment loss has been incurred. We performed this annual assessment, on a quantitative basis, for our indefinite-lived trade names and concluded that no impairment existed as of our measurement date of May 31, 2021.

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ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

The result of our impairment testing of our indefinite-lived intangible assets determined the fair value of our five indefinite-lived trade names ACCO Brands®, Five Star®, Swingline®, Leitz® and Tilibra® exceeded their carrying values. The fair value of these trade names are considered Level 3 measurements which utilize a relief-from-royalty discounted cash flows approach. Key inputs and assumptions involved include the estimated near-term revenue growth, long-term growth rate, royalty rate, and discount rate.

As of May 31, 2021, we changed the indefinite-lived Tilibra® trade name to an amortizable intangible asset. The change was made as a result of decisions regarding the Company's future use of the trade name. The Company began amortizing the Tilibra® trade name on a straight-line basis over a life of 30 years effective June 1, 2021.

10. Restructuring

The Company recorded $4.2 million and $7.3 million of restructuring expense for the nine months ended September 30, 2021 and 2020, respectively, and recorded $0.3 million and $0.5 million for the three months ended September 30, 2021 and 2020, respectively. The restructuring expenses were primarily for severance costs and termination of lease agreements related to cost reduction initiatives in our North America and International segments.

The summary of the activity in the restructuring liability for the nine months ended September 30, 2021, was as follows:

(in millions)	Balance at December 31, 2020		Provision		Cash Expenditures		Non-cash Items/ Currency Change		Balance at September 30, 2021
Employee termination costs(1)	$	8.1	$	3.8	$	(8.0)	$	(0.1)	$	3.8
Termination of lease agreements(2)	1.0		0.3		(0.9)		0.6		1.0
Other	0.2		0.1		(0.2)		(0.1)		—
Total restructuring liability	$	9.3	$	4.2	$	(9.1)	$	0.4	$	4.8

(1) We expect the remaining $3.8 million employee termination costs to be substantially paid in the next nine months.

(2) We expect the remaining $1.0 million lease termination costs to be substantially paid in the next nine months.

The summary of the activity in the restructuring liability for the nine months ended September 30, 2020, was as follows:

(in millions)	Balance at December 31, 2019		Provision		Cash Expenditures		Non-cash Items/ Currency Change		Balance at September 30, 2020
Employee termination costs	$	10.7	$	6.7	$	(8.4)	$	(0.1)	$	8.9
Termination of lease agreements	0.6		0.1		(0.5)		—		0.2
Other	0.5		0.5		(0.5)		(0.4)		0.1
Total restructuring liability	$	11.8	$	7.3	$	(9.4)	$	(0.5)	$	9.2

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

11. Income Taxes

For the three months ended September 30, 2021, we recorded an income tax expense of $10.0 million on income before taxes of $30.2 million, for an effective rate of 33.1 percent. For the three months ended September 30, 2020, we recorded an income tax expense of $6.8 million on income before taxes of $25.6 million, for an effective rate of 26.6 percent. The increase in the effective rate versus the three months ended September 30, 2020 was primarily driven by an increase in the global intangible low-taxed income tax.

For the nine months ended September 30, 2021, we recorded an income tax expense of $5.8 million on income before taxes of $54.2 million, for an effective rate of 10.7 percent. For the nine months ended September 30, 2020, we recorded an income tax expense of $13.7 million on income before taxes of $45.9 million, for an effective rate of 29.8 percent. The decrease in the effective rate versus the nine months ended September 30, 2020 was primarily driven by the revaluation of the deferred tax assets due to enacted statutory tax rate changes and the release of non-U.S. reserves for unrecognized tax benefits for which the time to assess has lapsed.

The U.S. federal statute of limitations remains open for the years 2017 and forward. Foreign and U.S. state jurisdictions have statutes of limitations generally ranging from 2 to 5 years. Years still open to examination by foreign tax authorities in major jurisdictions include Australia (2017 forward), Brazil (2015 forward), Canada (2017 forward), Germany (2016 forward), Sweden (2016 forward) and the U.K. (2019 forward). We are currently under examination in certain foreign jurisdictions.

Brazil Tax Assessments

In connection with our May 1, 2012, acquisition of the Mead Consumer and Office Products business ("Mead C&OP"), we assumed all of the tax liabilities for the acquired foreign operations including Tilibra Produtos de Papelaria Ltda. ("Tilibra"). In December of 2012, the Federal Revenue Department of the Ministry of Finance of Brazil ("FRD") issued a tax assessment against Tilibra, challenging the tax deduction of goodwill from Tilibra's taxable income for the year 2007 (the "First Assessment"). A second assessment challenging the deduction of goodwill from Tilibra's taxable income for the years 2008, 2009 and 2010 was issued by FRD in October 2013 (the "Second Assessment" and together with the First Assessment, the "Brazil Tax Assessments"). Tilibra is disputing both of the Brazil Tax Assessments.

The final administrative appeal of the Second Assessment was decided against the Company in 2017. In 2018, we appealed this decision to the judicial level. In the event we do not prevail at the judicial level, we will be required to pay an additional penalty representing attorneys' costs and fees; accordingly, in the first quarter of 2019, the Company recorded an additional reserve in the amount of $5.6 million. In connection with the judicial challenge, we were required to provide security to guarantee payment of the Second Assessment should we not prevail.

In the third quarter of 2020, the final administrative appeal of the First Assessment was decided against the Company. We decided to challenge this adverse decision in the tax authority's lawsuit at the judicial level seeking to collect the tax when the collection action is filed. We recorded an additional expense in the third quarter of 2020 of $1.2 million representing additional attorneys' costs and fees, which we will be required to pay if we do not prevail at the judicial level. In anticipation of the judicial challenge, we were required to provide security to guarantee payment of the First Assessment should we not prevail.

We believe we have meritorious defenses and intend to vigorously contest both of the Brazil Tax Assessments; however, there can be no assurances that we will ultimately prevail. The ultimate outcome will not be determined until the Brazilian judicial process is complete, which is expected to take a number of years. If the FRD's initial position is ultimately sustained, payment of the amount assessed would materially and adversely affect our cash flow in the year of settlement.

Because there is no settled legal precedent on which to base a definitive opinion as to whether we will ultimately prevail, we consider the outcome of these disputes to be uncertain. Since it is not more likely than not that we will prevail, in 2012, we recorded a reserve in the amount of $44.5 million (at December 31, 2012 exchange rates) in consideration of this contingency, of which $43.3 million was recorded as an adjustment to the purchase price and which included the 2007-2012 tax years plus penalties and interest through December 2012. Included in this reserve is an assumption of penalties at 75 percent, which is the standard penalty. While there is a possibility that a penalty of 150 percent could be imposed in connection with the First Assessment, based on the facts in our case and existing precedent, we believe the likelihood of a 150 percent penalty is not more likely than not as of September 30, 2021. We will continue to actively monitor administrative and judicial court decisions and evaluate their impact, if any, on our legal assessment of the ultimate outcome of our disputes. In addition, we will continue

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

to accrue interest related to this contingency until such time as the outcome is known or until evidence is presented that we are more likely than not to prevail. The time limit for issuing an assessment for 2011 and 2012 expired in January 2018 and January 2019, respectively. Since we did not receive an assessment for either of these periods, we reversed the amounts previously accrued for them. During the nine months ended September 30, 2021 and 2020, we accrued additional interest as a charge to current income tax expense of $0.3 million and $0.3 million, respectively. At current exchange rates, our accrual through September 30, 2021, including tax, penalties and interest is $27.3 million (reported in "Other non-current liabilities").

12. Earnings per Share

Total outstanding shares as of September 30, 2021 and 2020, were 95.7 million and 94.5 million, respectively. Under our stock repurchase program, for the three and nine months ended September 30, 2021 and for the three months ended September 30, 2020, no shares were repurchased, and for the nine months ended September 30, 2020, we repurchased and retired 2.7 million shares. For the nine months ended September 30, 2021 and 2020, we acquired 0.1 million and 0.2 million shares, respectively, related to tax withholding for share-based compensation.

The calculation of basic earnings per share of common stock is based on the weighted-average number of shares of common stock outstanding in the year, or period, over which they were outstanding. Our calculation of diluted earnings per share of common stock assumes that any shares of common stock outstanding were increased by shares that would be issued upon exercise of those stock awards for which the average market price for the period exceeds the exercise price less the shares that could have been purchased by the Company with the related proceeds, including compensation expense measured but not yet recognized.

The number of our weighted-average shares outstanding for the three and nine months ended September 30, 2021 and 2020 was as follows:

	Three Months Ended September 30,		Nine Months Ended September 30,
(in millions)	2021	2020	2021	2020
Weighted-average number of shares of common stock outstanding - basic	95.6	94.5	95.4	95.0
Stock options	0.2	—	0.1	0.1
Restricted stock units	1.5	1.1	1.5	1.1
Weighted-average shares and assumed conversions - diluted	97.3	95.6	97.0	96.2

Awards of potentially dilutive shares of common stock, which have exercise prices that were higher than the average market price during the period, are not included in the computation of dilutive earnings per share as their effect would have been anti-dilutive. For each of the three and nine months ended September 30, 2021, the number of anti-dilutive shares was approximately 8.0 million. For the three and nine months ended September 30, 2020, the number of anti-dilutive shares was approximately 8.0 million and 7.5 million, respectively.

13. Derivative Financial Instruments

We are exposed to various market risks, including changes in foreign currency exchange rates and interest rate changes. We enter into financial instruments to manage and reduce the impact of these risks, not for trading or speculative purposes. The counterparties to these financial instruments are major financial institutions. We continually monitor our foreign currency exposures in order to maximize the overall effectiveness of our foreign currency hedge positions. Principal currencies hedged against the U.S. dollar include the Euro, Australian dollar, Canadian dollar, Swedish krona, British pound and Japanese yen. We are subject to credit risk, which relates to the ability of counterparties to meet their contractual payment obligations or the potential non-performance by counterparties to financial instrument contracts. Management continues to monitor the status of our counterparties and will take action, as appropriate, to further manage our counterparty credit risk. There are no credit contingency features in our derivative financial instruments.

When hedge accounting is applicable, on the date we enter into a derivative, the derivative is designated as a hedge of the identified exposure. We measure the effectiveness of our hedging relationships both at hedge inception and on an ongoing basis.

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

Forward Currency Contracts

We enter into forward foreign currency contracts with third parties to reduce the effect of fluctuating foreign currencies, primarily on foreign denominated inventory purchases and intercompany loans. The majority of the Company’s exposure to local currency movements is in Europe (the Euro, the Swedish krona and the British pound), Brazil, Australia, Canada, and Mexico.

Forward currency contracts are used to hedge foreign denominated inventory purchases for Europe, Australia, Canada, Japan and New Zealand, and are designated as cash flow hedges. Unrealized gains and losses on these contracts are deferred in Accumulated Other Comprehensive Income ("AOCI") until the contracts are settled and the underlying hedged transactions relating to inventory purchases are recognized, at which time the deferred gains or losses will be reported in the "Cost of products sold" line in the "Consolidated Statements of Income." As of September 30, 2021 and December 31, 2020, we had cash flow foreign exchange contracts outstanding with a U.S. dollar equivalent notional value of $133.8 million and $134.3 million, respectively, which were designated as hedges.

Forward currency contracts used to hedge foreign denominated intercompany loans are not designated as hedging instruments. Gains and losses on these derivative instruments are recognized within "Other expense, net" in the "Consolidated Statements of Income" and are largely offset by the change in the current translated value of the hedged item. The periods of the forward foreign exchange contracts correspond to the periods of the hedged transactions, with some relating to intercompany loans which extend beyond September 2022. As of September 30, 2021 and December 31, 2020, we had foreign exchange contracts outstanding with a U.S. dollar equivalent notional value of $93.1 million and $164.7 million, respectively, which were not designated as hedges.

The following table summarizes the fair value of our derivative financial instruments as of September 30, 2021 and December 31, 2020:

	Fair Value of Derivative Instruments
	Derivative Assets					Derivative Liabilities
(in millions)	Balance Sheet Location	September 30, 2021		December 31, 2020		Balance Sheet Location	September 30, 2021		December 31, 2020
Derivatives designated as hedging instruments:
Foreign exchange contracts	Other current assets	$	5.1	$	0.1	Other current liabilities	$	0.1	$	5.0
Derivatives not designated as hedging instruments:
Foreign exchange contracts	Other current assets	0.4		1.6		Other current liabilities	0.7		1.2
Foreign exchange contracts	Other non-current assets	16.3		32.1		Other non-current liabilities	16.3		32.1
Total derivatives		$	21.8	$	33.8		$	17.1	$	38.3

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

The following tables summarize the pre-tax effect of our derivative financial instruments on the condensed consolidated financial statements for the three and nine months ended September 30, 2021 and 2020:

	The Effect of Derivative Instruments in Cash Flow Hedging Relationships on the Consolidated Financial Statements
	Amount of Gain (Loss) Recognized in AOCI (Effective Portion)				Location of (Gain) Loss Reclassified from AOCI to Income	Amount of (Gain) Loss Reclassified from AOCI to Income (Effective Portion)
	Three Months Ended September 30,					Three Months Ended September 30,
(in millions)	2021		2020			2021		2020
Cash flow hedges:
Foreign exchange contracts	$	3.9	$	(2.1)	Cost of products sold	$	(0.5)	$	1.3
	The Effect of Derivative Instruments in Cash Flow Hedging Relationships on the Consolidated Financial Statements
	Amount of Gain (Loss) Recognized in AOCI (Effective Portion)				Location of (Gain) Loss Reclassified from AOCI to Income	Amount of (Gain) Loss Reclassified from AOCI to Income (Effective Portion)
	Nine Months Ended September 30,					Nine Months Ended September 30,
(in millions)	2021		2020			2021		2020
Cash flow hedges:
Foreign exchange contracts	$	7.3	$	0.3	Cost of products sold	$	2.3	$	(1.2)

	The Effect of Derivatives Not Designated as Hedging Instruments on the Consolidated Statements of Operations
	Location of (Gain) Loss Recognized in Income on Derivatives	Amount of (Gain) Loss Recognized in Income				Amount of (Gain) Loss Recognized in Income
		Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)		2021		2020		2021		2020
Foreign exchange contracts	Other expense, net	$	0.3	$	2.8	$	0.3	$	(2.4)

14. Fair Value of Financial Instruments

In establishing a fair value, there is a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The basis of the fair value measurement is categorized in three levels, in order of priority, as described below:

Level 1	Unadjusted quoted prices in active markets for identical assets or liabilities
Level 2	Unadjusted quoted prices in active markets for similar assets or liabilities, or
	Unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or
	Inputs other than quoted prices that are observable for the asset or liability
Level 3	Unobservable inputs for the asset or liability

We utilize the best available information in measuring fair value. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

We have determined that our financial assets and liabilities described in "Note 13. Derivative Financial Instruments" are Level 2 in the fair value hierarchy. The following table sets forth our financial assets and liabilities that were accounted for at fair value on a recurring basis as of September 30, 2021 and December 31, 2020:

(in millions)	September 30, 2021		December 31, 2020
Assets:
Forward currency contracts	$	21.8	$	33.8
Liabilities:
Forward currency contracts	$	17.1	$	38.3

Our forward currency contracts are included in "Other current assets," "Other current liabilities," "Other non-current assets," or "Other non-current liabilities." The forward foreign currency exchange contracts are primarily valued based on the foreign currency spot and forward rates quoted by banks or foreign currency dealers. As such, these derivative instruments are classified within Level 2.

The fair values of cash and cash equivalents, notes payable to banks, accounts receivable and accounts payable approximate carrying amounts due principally to their short maturities. The carrying amount of total debt was $1,130.1 million and $1,136.6 million and the estimated fair value of total debt was $1,173.2 million and $1,146.9 million at September 30, 2021 and December 31, 2020, respectively. The fair values are determined from quoted market prices, where available, and from investment bankers using current interest rates considering credit ratings and the remaining time to maturity.

Contingent consideration: The PowerA Acquisition included an additional earnout of up to $55.0 million in cash, contingent upon PowerA achieving one- and two- year sales and profit growth objectives. Liabilities for contingent consideration are measured at fair value each reporting period, with the acquisition-date fair value included as part of the consideration transferred in the related business combination and subsequent changes in fair value recorded in operating income on the condensed consolidated statements of income.

We use a Monte Carlo simulation model for contingent earnout payments, which are then discounted to present value. We classify the contingent consideration liabilities as Level 3 due to the lack of relevant observable market data over fair value inputs such as probability-weighting of payment outcomes. There have been no transfers of assets or liabilities into or out of Level 3 of the fair value hierarchy.

The following table provides a reconciliation of the beginning and ending balance of the contingent consideration for the nine months ended September 30, 2021:

(in millions)	Contingent Consideration
Balance at December 31, 2020	$	18.2
Change in fair value	16.5
Balance at September 30, 2021	$	34.7

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

15. Accumulated Other Comprehensive Income (Loss)

AOCI is defined as net income (loss) and other changes in stockholders’ equity from transactions and other events from sources other than stockholders. The components of, and changes in, AOCI were as follows:

(in millions)	Derivative Financial Instruments		Foreign Currency Adjustments		Unrecognized Pension and Other Post-retirement Benefit Costs		Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2020	$	(3.1)	$	(318.8)	$	(242.3)	$	(564.2)
Other comprehensive income (loss) before reclassifications, net of tax	5.0		(18.6)		3.6		(10.0)
Amounts reclassified from accumulated other comprehensive income, net of tax	1.7		—		7.1		8.8
Balance at September 30, 2021	$	3.6	$	(337.4)	$	(231.6)	$	(565.4)

The reclassifications out of AOCI for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
(in millions)	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)				Amount Reclassified from Accumulated Other Comprehensive Income (Loss)				Location on Income Statement
Details about Accumulated Other Comprehensive Income (Loss) Components
Gain (loss) on cash flow hedges:
Foreign exchange contracts	$	0.5	$	(1.3)	$	(2.3)	$	1.2	Cost of products sold
Tax (expense) benefit	(0.2)		0.5		0.6		(0.3)		Income tax expense
Net of tax	$	0.3	$	(0.8)	$	(1.7)	$	0.9
Defined benefit plan items:
Amortization of actuarial loss	$	(2.5)	$	(2.0)	$	(7.7)	$	(5.7)	(1)
Amortization of prior service cost	(0.1)		(0.2)		(1.7)		(0.5)		(1)
Total before tax	(2.6)		(2.2)		(9.4)		(6.2)
Tax benefit	0.7		0.6		2.3		1.3		Income tax expense
Net of tax	$	(1.9)	$	(1.6)	$	(7.1)	$	(4.9)
Total reclassifications for the period, net of tax	$	(1.6)	$	(2.4)	$	(8.8)	$	(4.0)

(1)     These AOCI components are included in the computation of net periodic benefit cost for pension and post-retirement plans. See "Note 6. Pension and Other Retiree Benefits" for additional details.

16. Revenue Recognition

Revenue is recognized when control of the promised goods or services is transferred to our customers in an amount reflective of the consideration we expect to receive in exchange for those goods or services. Taxes we collect concurrent with revenue producing activities are excluded from revenue. Incidental items incurred that are immaterial in the context of the contract are expensed.

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

At the inception of each contract, the Company assesses the products and services promised and identifies each distinct performance obligation. To identify the performance obligations, the Company considers all products and services promised regardless of whether they are explicitly stated or implied within the contract or by standard business practices.

Freight and distribution activities performed before the customer obtains control of the goods are not considered promised services under customer contracts and therefore are not distinct performance obligations. The Company has chosen to account for shipping and handling activities as a fulfillment activity, and therefore accrues the expense of freight and distribution in "Cost of products sold" when products are shipped.

Service or Extended Maintenance Agreements ("EMAs"). As of December 31, 2020, there was $3.0 million of unearned revenue associated with outstanding EMAs, primarily reported in "Other current liabilities." During the three and nine months ended September 30, 2021, $0.4 million and $2.1 million of the unearned revenue was earned and recognized, respectively. As of September 30, 2021, the amount of unearned revenue from EMAs was $2.5 million. We expect to earn and recognize approximately $2.1 million of the unearned amount in the next 12 months and $0.4 million in periods beyond the next 12 months.

The following tables present our net sales disaggregated by regional geography(1), by reporting business segments and our net sales disaggregated by the timing of revenue recognition for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
United States	$	253.9	$	203.5	$	685.5	$	562.5
Canada	33.6		35.0		85.9		75.5
ACCO Brands North America	287.5		238.5		771.4		638.0
ACCO Brands EMEA(2)	161.1		136.4		475.0		352.2
Australia/N.Z.	35.3		31.7		96.8		83.6
Latin America	30.8		27.5		72.2		90.8
Asia-Pacific	12.0		10.0		39.6		30.5
ACCO Brands International	78.1		69.2		208.6		204.9
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

(1) Net sales are attributed to geographic areas based on the location of the selling subsidiaries.

(2) ACCO Brands EMEA is comprised largely of Europe, but also includes export sales to the Middle East and Africa.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Product and services transferred at a point in time	$	515.4	$	431.1	$	1,416.0	$	1,148.5
Product and services transferred over time	11.3		13.0		39.0		46.6
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

17. Information on Business Segments

The Company has three operating business segments, each of which is comprised of different geographic regions. The Company's three segments are as follows:

Operating Segment	Geography	Primary Brands	Primary Products
ACCO Brands North America	United States and Canada	PowerA®, Five Star®, Kensington®, AT-A-GLANCE®, Quartet®, Swingline®, GBC®, Mead®, Hilroy®	Gaming and computer accessories, school products, planners, storage and organization (3-ring binders), dry erase boards, laminating, binding, stapling and punching products
ACCO Brands EMEA	Europe, Middle East and Africa	Leitz®, Rapid®, Esselte®, Kensington®, Rexel® GBC®, PowerA®, NOBO®, Derwent®	Storage and organization products (lever-arch binders, sheet protectors, indexes), computer and gaming accessories, laminating, shredding, stapling, punching, do-it-yourself tools, dry erase boards and writing instruments
ACCO Brands International	Australia/N.Z., Latin America and Asia-Pacific	Tilibra®, Foroni®, GBC®, Barrilito®, Marbig®, Kensington®, Artline®*, PowerA®, Spirax®, Quartet®, Wilson Jones®, Rexel® *Australia/N.Z. only	School notebooks, laminating, shredding, storage and organization products (binders, sheet protectors and indexes), writing and arts products, janitorial supplies, dry erase boards, and stapling and punching products

Customers

We distribute our products through a wide variety of retail and commercial channels to ensure that our products are readily and conveniently available for purchase by consumers and other end-users, wherever they prefer to shop. These channels include mass retailers, e-tailers, discount, drug/grocery and variety chains, warehouse clubs, hardware and specialty stores, independent office product dealers, office superstores, wholesalers, contract stationers, and specialist technology businesses. We also sell directly to commercial and consumer end-users through e-commerce sites and our direct sales organization.

Net sales by reportable business segment for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
ACCO Brands North America	$	287.5	$	238.5	$	771.4	$	638.0
ACCO Brands EMEA	161.1		136.4		475.0		352.2
ACCO Brands International	78.1		69.2		208.6		204.9
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

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Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

Operating income by business segment for the three and nine months ended September 30, 2021 and 2020 was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
ACCO Brands North America	$	34.6	$	22.9	$	87.7	$	67.9
ACCO Brands EMEA	13.4		16.7		40.1		26.9
ACCO Brands International	7.3		3.7		10.7		5.2
Segment operating income	55.3		43.3		138.5		100.0
Change in fair value of contingent consideration	(4.9)		—		(16.5)		—
Corporate	(11.8)		(9.0)		(34.6)		(29.8)
Operating income(1)	38.6		34.3		87.4		70.2
Interest expense	11.2		10.2		36.0		28.7
Interest income	(0.6)		(0.2)		(1.2)		(0.8)
Non-operating pension income	(2.3)		(1.4)		(5.6)		(4.4)
Other expense, net	0.1		0.1		4.0		0.8
Income before income tax	$	30.2	$	25.6	$	54.2	$	45.9

(1)Operating income is defined as i) net sales; ii) less cost of products sold; iii) less selling, general and administrative expenses; iv) less amortization of intangibles; v) less restructuring charges; and vi) less change in the fair value of contingent consideration.

18. Commitments and Contingencies

Pending Litigation - Brazil Tax Assessments

In connection with our May 1, 2012, acquisition of the Mead C&OP business, we assumed all of the tax liabilities for the acquired foreign operations including Tilibra. For further information, see "Note 11. Income Taxes - Brazil Tax Assessments" for details on tax assessments issued by the FRD against Tilibra challenging the tax deduction of goodwill from Tilibra's taxable income for the years 2007 through 2010. If the FRD's initial position is ultimately sustained, payment of the amount assessed would materially and adversely affect our cash flow in the year of settlement.

Brazil Tax Credits

In May 2021, the Supreme Court of Brazil issued its final ruling in a leading case related to the computation of certain indirect taxes which provides that the indirect tax base should not include the gross amount of the value-added tax known as “ICMS.” The Supreme Court further ruled that taxpayers can recognize future operating credits ("Tax Credits") for excess indirect tax payments from past periods due to the inclusion of ICMS in the indirect tax base to the extent the taxpayer had filed judicial challenges seeking to recover excess tax payments prior to March 15, 2017 and for any excess tax payments made after March 15, 2017.

Tilibra, one of our Brazilian subsidiaries, filed legal actions requesting recovery of these excess tax payments by way of future Tax Credits covering various time periods prior to March 15, 2017. Some of these cases have been finally decided in a court of law in favor of Tilibra, while others are still pending a final decision which we expect to issue in the future based on the Supreme Court decision.

In the second quarter, the Company recorded Tax Credits in the amount of $9.1 million with respect to the finally decided cases as Other income, net. In addition, the recording of the Tax Credits resulted in additional income tax expense of $3.1 million.

Final decisions in the remaining legal actions Tilibra has filed will result in additional Tax Credits, and the amount of these Tax Credits, in the aggregate, may be material.

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ACCO Brands Corporation and Subsidiaries

Notes to Condensed Consolidated Financial Statements (Unaudited) (Continued)

Other Pending Litigation

We are party to various lawsuits and regulatory proceedings, primarily related to alleged patent infringement, as well as other claims incidental to our business. In addition, we may be unaware of third-party claims of intellectual property infringement relating to our technology, brands, or products, and we may face other claims related to business operations. Any litigation regarding patents or other intellectual property could be costly and time-consuming and might require us to pay monetary damages or enter into costly license agreements. We also may be subject to injunctions against development and sale of certain of our products.

It is the opinion of management that (other than the Brazil Tax Assessments) the ultimate resolution of currently outstanding matters will not have a material adverse effect on our financial condition, results of operations or cash flow. However, there is no assurance that we will ultimately be successful in our defense of any of these matters or that an adverse outcome in any matter will not affect our results of operations, financial condition or cash flow. Further, future claims, lawsuits and legal proceedings could materially and adversely affect our business, reputation, results of operations and financial condition.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Introduction

Management’s Discussion and Analysis of Financial Condition and Results of Operations for the three and nine months ended September 30, 2021 and 2020 should be read in conjunction with the unaudited condensed consolidated financial statements of ACCO Brands Corporation and the accompanying notes contained therein.

Overview of the Company

ACCO Brands designs, markets, and manufactures well-recognized consumer, school, technology and office products. Our widely known brands include AT-A-GLANCE®, Barrilito®, Derwent®, Esselte®, Five Star®, Foroni®, GBC®, Hilroy®, Kensington®, Leitz®, Marbig®, Mead®, NOBO®, PowerA®, Quartet®, Rapid®, Rexel®, Swingline®, Tilibra®, TruSens® and Wilson Jones®. Approximately 75 percent of our sales come from brands that occupy the No. 1 or No. 2 position in the product categories in which we compete. Our top 12 brands represented $1.3 billion of our 2020 net sales. We distribute our products through a wide variety of retail and commercial channels to ensure that our products are readily and conveniently available for purchase by consumers and other end-users, wherever they prefer to shop. These channels include mass retailers, e-tailers, discount, drug/grocery and variety chains; warehouse clubs; hardware and specialty stores; independent office product dealers; office superstores; wholesalers; contract stationers, technology specialty businesses, and our direct-to-consumer channel. Our products are sold primarily in the U.S., Europe, Brazil, Australia, Canada, and Mexico. For the year ended December 31, 2020, approximately 44 percent of our net sales were in the U.S.

ACCO Brands is in the midst of a substantial transformation of its business. Today we are a global enterprise focused on developing innovative branded consumer and technology products for use in businesses, schools, and homes. We have refocused our business to sell more in the mass merchant, e-commerce and technology channels to increase growth and profitability and to reduce reliance on declining customers and commoditized product categories. In particular, sales in the commercial channels have been declining for several years, and customers within the channel have been consolidating. The commercial channel and school customers also were impacted significantly by COVID-19.

We have been strategically transforming our business to be more consumer- and brand-centric, product differentiated, and geographically diverse. We are successfully achieving this transformation through both organic initiatives and acquisitions. Organically, we have grown our Kensington® computer accessories offerings and entered the wellness category with TruSens® branded air purifiers, which we plan to expand over the next few years. ACCO remains a leading supplier of school products, including our top-selling Five Star® line of school notebooks, laminating machines, and stapling and punching products, among others. We have refreshed most of our line of shredders in EMEA over the past three years, improving consumer designs. This refresh includes a new line of personal shredders to capitalize on the work-from-home environment. Shredder sales have remained strong, and we plan to leverage our platforms more globally. During 2020, our EMEA business also launched organization and storage products for home offices under the Leitz® WOW and Leitz® Cosy brands.

Our approach to acquisitions has been focused on consolidation, geographic expansion, and adjacency opportunities that meet our strategic and financial criteria. Strategically, we are focusing on categories or geographies that provide opportunities for growth, leading brands, and channel diversity. We have made five acquisitions over the past five years. These acquisitions have meaningfully expanded our portfolio of well-known brands, enhanced our competitive position from both a product and channel perspective, and added scale to our operations. As a result, our foreign businesses contributed over half of our sales in 2020, up from 43 percent in 2016.

Our acquisition of PowerA (the "PowerA Acquisition") in late 2020 was about accelerating growth and entering into an attractive consumer product adjacency of third-party video game controllers, power charging stations, and headsets. The addition of PowerA has already meaningfully improved our organic sales growth and profitability and increased our presence in faster growing mass and e-commerce channels. PowerA has and is expected to continue to experience strong double-digit sales growth in the U.S., as well as opportunities for expansion internationally, particularly in Europe. It greatly advances our strategic shift toward consumer, school and technology products as more than half of our sales will now come from these faster growing product categories. On a pro forma basis for 2020, including full year PowerA sales of $210 million, gaming and computer products would represent approximately 22 percent of our sales.

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Our leading product category positions provide the scale to invest in marketing and product innovation to drive profitable growth. We now expect to grow in mature markets in consumer, technology, and adjacent categories driven by new product development. We will also continue to grow in emerging markets once the impact of COVID-19 subsides in Latin America and parts of Asia, the Middle East, and Eastern Europe. In all of our markets, we see opportunities for sales growth through share gains, channel and geographic expansion, and product enhancements.

We generate strong operating cash flow, and will continue to leverage our cost structure through acquisitions, synergies and productivity savings to drive long-term profit and operating cash flow improvement.

Overview of Performance

Our third quarter net sales increased 18.6 percent to $526.7 million, primarily from the acquisition of PowerA, which added $56.8 million. Excluding PowerA, sales increased 5.8 percent as a result of higher demand as offices and schools continued to reopen, and we had some benefit from price increases. EMEA continues to exhibit growth above pre-pandemic sales levels. Both North America and International were above 2020 levels due to higher demand related to increased in-person education and use of offices, despite some of our customers having excess inventory on hand. The prior-year period for North America included a large computer accessory sale that did not repeat in the current year. Favorable foreign exchange was $6.6 million, or 1.5 percent. Demand growth varied by channel as depicted in the table below, which includes the benefit of PowerA (mainly in the Mass/Retail and Etail channels):

Channel	Change vs. Q3 2020
Commercial/B2B	20	%
Mass/Retail	34	%
E-tail/D2C	28	%
Tech specialist	(32)	%
Total sales (including PowerA)*	19	%
*Numbers may not add due to rounding

The Company recorded operating income of $38.6 million. PowerA's underlying performance was impacted by a charge of $4.9 million related to the change in fair value of the contingent consideration that was part of the purchase price ("PowerA Earnout"), and $4.1 million of additional amortization resulting from the acquisition. Gross margin rose 120 basis points as improvements in North America and International offset a decline in EMEA. SG&A expenditures increased due to the PowerA acquisition and because the prior-year quarter contained many short-term cost reductions related to COVID-19 impacts, including lower management incentive expenses and $3.1 million in higher government assistance. Foreign exchange benefited operating income $0.8 million, or 2.3 percent, and added $0.7 million to net income.

Operating cash flow for the nine months ended September 30, 2021, was $44.0 million, compared with operating cash flow of $21.8 million for the nine months ended September 30, 2020. The $22.2 million year-over-year improvement was after $4.5 million for funding PowerA's adverse operating cash flow.

Higher logistics expense, commodity cost increases, international shipping delays and overall supply chain disruptions continue to adversely affect 2021 results. Our logistics and commodity costs and those used by our suppliers remain high. In the third quarter, we raised prices to partly offset these higher costs and also benefited from smaller price increases we had taken earlier in 2021. Throughout 2022, we anticipate that we will experience continuing higher logistics and commodity costs, as well as additional cost increases from our suppliers, necessitating additional increases in our selling prices. Overall, pricing still lags the cost increases we are experiencing, particularly in EMEA where price increases were not effective until October 1.

In 2020, to address the financial impact of the pandemic on our results of operations, we took a series of cost reductions, both temporary and then more long term, that will continue to impact our results and prior-period comparisons throughout 2021. In addition, during the first quarter of 2021, we recorded $3.9 million in restructuring charges to further reduce long-term expenses. The temporary cost reductions were gradually rescinded in late 2020 and early 2021, so the current period reflected, and the fourth quarter will continue to reflect, these operating expenses at more normalized levels.

While our business is benefiting from the gradual reopening of offices and the return of mostly in-person education in many of our regions this fall, the impact of the COVID-19 pandemic is not yet fully behind us. We expect the impact of the

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pandemic will continue to vary by geographic region and country depending upon a range of factors, including how seriously COVID-19 is affecting public health in the country, the progress of mass vaccinations, whether and to what degree businesses and schools are open, and the general seasonality and channel structure of our business in that country. Levels of vaccination improved in all markets during the third quarter, most notably in Canada, EMEA and most of our International markets.

Compared with the third quarter 2021, we expect improving operating margin in the fourth quarter, mainly due to the seasonal product mix and more benefit of price increases as we catch up further with cost inflation. We expect a stronger overall 2021-2022 back-to-school season for the International segment, but we expect some demand may be pushed into the first quarter of 2022 due to inventory, supply chain and customer credit constraints. We also anticipate additional benefit from higher levels of offices reopening in most markets, including North America, as the delays related to the Delta variant wane. In both North America and International, we continue to be impacted by lower demand than the respective pre-pandemic periods for some of our office and school products. Overall, we are expecting continuing economic improvement in all regions in the fourth quarter and into 2022. We believe that environment will lead to continued organic sales growth, with inflation muting some of the gross profit gain from the volume growth.

Consolidated Results of Operations for the Three and Nine Months Ended September 30, 2021 and 2020

	Three Months Ended September 30,						Amount of Change					Nine Months Ended September 30,						Amount of Change
(in millions, except per share data)	2021			2020(1)			$		%/pts			2021			2020(1)			$		%/pts
Net sales	$	526.7		$	444.1		$	82.6	18.6	%		$	1,455.0		$	1,195.1		$	259.9	21.7	%
Cost of products sold	369.5			317.0			52.5		16.6	%		1,018.2			845.8			172.4		20.4	%
Gross profit	157.2			127.1			30.1		23.7	%		436.8			349.3			87.5		25.1	%
Gross profit margin	29.8		%	28.6		%			1.2		pts	30.0		%	29.2		%			0.8		pts
Selling, general and administrative expenses	101.8			84.4			17.4		20.6	%		293.5			247.7			45.8		18.5	%
SG&A % to net sales	19.3		%	19.0		%			0.3		pts	20.2		%	20.7		%			(0.5)		pts
Amortization of intangibles	11.6			7.9			3.7		46.8	%		35.2			24.1			11.1		46.1	%
Restructuring charges	0.3			0.5			(0.2)		(40.0)	%		4.2			7.3			(3.1)		(42.5)	%
Change in fair value of contingent consideration	4.9			—			4.9		NM			16.5			—			16.5		NM
Operating income	38.6			34.3			4.3		12.5	%		87.4			70.2			17.2		24.5	%
Operating income margin	7.3		%	7.7		%			(0.4)		pts	6.0		%	5.9		%			0.1		pts
Interest expense	11.2			10.2			1.0		9.8	%		36.0			28.7			7.3		25.4	%
Interest income	(0.6)			(0.2)			0.4		200.0	%		(1.2)			(0.8)			0.4		50.0	%
Non-operating pension income	(2.3)			(1.4)			0.9		64.3	%		(5.6)			(4.4)			1.2		27.3	%
Other expense, net	0.1			0.1			—		-			4.0			0.8			3.2		400.0	%
Income before income tax	30.2			25.6			4.6		18.0	%		54.2			45.9			8.3		18.1	%
Income tax expense	10.0			6.8			3.2		47.1	%		5.8			13.7			(7.9)		(57.7)	%
Effective tax rate	33.1		%	26.6		%			6.5		pts	10.7		%	29.8		%			(19.1)		pts
Net income	20.2			18.8			1.4		7.4	%		48.4			32.2			16.2		50.3	%
Weighted average number of diluted shares outstanding:	97.3			95.6			1.7		1.8	%		97.0			96.2			0.8		0.8	%
Diluted income per share	$	0.21		$	0.20		$	0.01	5.0	%		$	0.50		$	0.34		$	0.16	47.1	%
Comparable net sales	$	463.3		$	444.1		$	19.2	4.3	%		$	1,238.8		$	1,195.1		$	43.7	3.7	%

(1)    The Company acquired PowerA effective December 17, 2020.

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Foreign Exchange Rates

Approximately 52.9 percent of our net sales for the nine months ended September 30, 2021, were transacted in a currency other than the U.S. dollar. Additionally, we source approximately 60 percent of our products mainly from China, Vietnam and other Far Eastern countries using U.S. dollars. As a result, the sales, profitability and cash flow of our foreign operations which transact business in their local currency are affected by the fluctuation in foreign currency rates relative to the U.S. dollar.

Net Sales

For the three months ended September 30, 2021, net sales increased due to the PowerA Acquisition, which added $56.8 million, as well as greater demand related to office and school reopenings, and the benefit of sales price increases, partially offset by the absence of a large computer accessories sale in North America. Favorable foreign exchange was $6.6 million, or 1.5 percent.

For the nine months ended September 30, 2021, net sales increased due to the PowerA Acquisition, which added $170.2 million, and higher demand related to office and school reopenings. Favorable foreign exchange was $46.0 million, or 3.8 percent.

Cost of Products Sold

Cost of products sold includes all manufacturing, product sourcing and distribution costs, including depreciation related to assets used in manufacturing; procurement and distribution processes; allocation of certain information technology costs supporting those processes; inbound and outbound freight; shipping and handling costs; purchasing costs associated with materials and packaging used in the production processes; and inventory valuation adjustments.

For the three months ended September 30, 2021, PowerA added $41.6 million, or 13.1 percent. Foreign exchange reduced cost of products sold $4.4 million, or 1.4 percent. Excluding PowerA and foreign exchange, cost of products sold increased, primarily due to higher comparable sales and inflationary cost increases related to logistics, commodities, and wages.

For the nine months ended September 30, 2021, PowerA added $124.2 million, or 14.7 percent. Foreign exchange reduced cost of products sold $31.0 million, or 3.7 percent. Excluding PowerA and foreign exchange, cost of products sold increased, primarily for the same reasons noted above for three months.

Gross Profit

For the three months ended September 30, 2021, PowerA contributed $15.2 million, or 12.0 percent, to gross profit and foreign exchange increased gross profit $2.2 million, or 1.7 percent. Excluding PowerA and foreign exchange, gross profit increased primarily due to higher comparable sales.

For the three months ended September 30, 2021, gross profit as a percent of net sales increased 120 basis points. Gross profit margin improved, primarily from a better sales mix and cost savings, partially offset by higher logistics and commodity costs, which were not fully offset by price increases.

For the nine months ended September 30, 2021, PowerA contributed $46.0 million, or 13.2 percent and foreign exchange increased gross profit $15.0 million, or 4.3 percent. Excluding PowerA and foreign exchange, gross profit rose primarily due to higher comparable sales.

For the nine months ended September 30, 2021, gross profit as a percent of net sales increased 80 basis points. Gross profit margin rose primarily from cost savings, lower inventory reserves, and an improved product mix, partly offset by higher logistics and commodity costs.

Selling, General and Administrative Expenses

Selling, general and administrative expenses ("SG&A") include advertising, marketing, selling (including commissions), research and development, customer service, depreciation related to assets outside the manufacturing and distribution processes, and all other general and administrative expenses outside the manufacturing and distribution functions (e.g., finance, human resources, information technology).

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For the three months ended September 30, 2021, PowerA increased SG&A $5.8 million, or 6.9 percent, foreign exchange added $1.2 million, or 1.4 percent, and integration and transaction costs were $1.0 million. Excluding PowerA, integration and transaction costs, and foreign exchange, SG&A increased $9.4 million as the prior period benefited from many pandemic-related, short-term cost reductions, including low management incentives and an additional $1.6 million of higher government

For the three months ended September 30, 2021, excluding PowerA and foreign exchange, SG&A as a percentage of net sales increased primarily from more normalized expenditures as the prior period benefited from pandemic-related, short-term cost reductions.

For the nine months ended September 30, 2021, PowerA increased SG&A $16.1 million, or 6.5 percent, foreign exchange added $8.0 million, or 3.2 percent, and integration and transaction costs were $2.5 million. The prior-year period included $3.3 million in higher government assistance and $0.8 million in integration costs related to prior acquisitions. Excluding PowerA, integration and transaction costs, and foreign exchange, SG&A increased $20.0 million as the prior period benefited from many pandemic-related, short-term cost reductions, including the government assistance noted above.

For the nine months ended September 30, 2021, excluding PowerA and foreign exchange, SG&A as a percentage of net sales decreased 50 basis points from the comparable prior year period as expenses have normalized but sales have increased more.

Restructuring Charges

For the three months ended September 30, 2021, the net restructuring provision was $0.3 million.

For the nine months ended September 30, 2021, restructuring charges were $4.2 million. Costs associated with severance were $3.8 million, primarily in North America, but also in Brazil and the U.K. Lease abandonment charges were $0.3 million related to facilities in North America and Mexico.

Operating Income

For the three months ended September 30, 2021, operating income increased to $38.6 million, primarily due to higher sales and improved gross margin. PowerA did not contribute to operating income as its underlying performance was impacted by a charge of $4.9 million related to the change in fair value of the contingent consideration that was part of the purchase price, as well as $3.7 million of higher amortization primarily from PowerA. Restructuring costs were $0.2 million lower than prior year. Foreign exchange benefited operating income $0.8 million, or 2.3 percent.

For the nine months ended September 30, 2021, operating income rose to $87.4 million, primarily due to higher sales and improved gross margin. PowerA contributed operating income of $0.5 million, which includes $16.5 million related to the contingent consideration expense and $11.1 million of higher amortization primarily related to the PowerA acquisition. Restructuring costs were $3.1 million lower than prior year. Foreign exchange benefited operating income $5.9 million, or 8.4 percent.

Interest Expense

For the three and nine months ended September 30, 2021, the increase in interest expense was primarily due to higher average debt outstanding due to the PowerA Acquisition.

Other Expense, Net

The nine months ended September 30, 2021, included $9.1 million of Brazilian operating tax credits as a result of favorable judicial court rulings as well as charges associated with the first quarter refinancing of the senior unsecured notes due 2024 and our bank debt. These charges consisted of a call premium of $9.8 million and a $3.7 million charge for the write-off of debt issuance costs.

Income Tax Expense

The increase in the effective tax rate versus the three months ended September 30, 2020, was primarily driven by an increase in the global intangible low-taxed income tax.

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The decrease in the effective rate versus the nine months ended September 30, 2020, was primarily driven by the revaluation of the deferred tax assets due to enacted statutory tax rate changes and the release of non-U.S. reserves for unrecognized tax benefits for which the time to assess has lapsed.

See "Note 11. Income Taxes" for more information.

Net Income/Diluted Income per Share

For the three months ended September 30, 2021, net income increased primarily due to higher operating income, partly offset by higher taxes. Foreign exchange increased net income $0.7 million, or 3.7 percent.

For the nine months ended September 30, 2021, net income increased primarily due to higher operating income, partly offset by the increase in interest expense of $7.3 million. Foreign exchange increased net income $4.4 million, or 13.7 percent.

Segment Net Sales and Operating Income for the Three and Nine Months Ended September 30, 2021 and 2020

ACCO Brands North America

	Three Months Ended September 30,						Amount of Change					Nine Months Ended September 30,						Amount of Change
(in millions)	2021			2020			$		%/pts			2021			2020			$		%/pts
Net sales	$	287.5		$	238.5		$	49.0	20.5	%		$	771.4		$	638.0		$	133.4	20.9	%
Segment operating income(1)	34.6			22.9			11.7		51.1	%		87.7			67.9			19.8		29.2	%
Segment operating income margin	12.0		%	9.6		%			2.4		pts	11.4		%	10.6		%			0.8		pts
Comparable net sales (Non-GAAP)(2)	$	240.4		$	238.5		$	1.9	0.8	%		$	627.4		$	638.0		$	(10.6)	(1.7)	%

(1) Segment operating income excludes corporate costs. See "Part I, Item 1. Note 17. Information on Business Segments," for a reconciliation of total "Segment operating income" to "Income before income tax."

(2) See reconciliation to GAAP, contained in Part I, Item 2. "Supplemental Non-GAAP Financial Measure."

FX Impact vs US$	2021 3rd QTR Avg vs. 2020 3rd QTR Avg	2021 YTD Avg vs. 2020 YTD Avg
Currency	Increase/(Decline)	Increase/(Decline)
Canadian dollar	6%	8%

For the three months ended September 30, 2021, net sales increased primarily due to the PowerA acquisition, which added $45.1 million. Favorable foreign exchange increased net sales $2.0 million, or 0.8 percent. The comparable sales increase was driven by higher back-to-school sales, which as expected, were partially reduced by our customers selling inventory remaining from last year and therefore ordering less product this year in order to conclude the back-to-school season without excess inventory, and by a pull forward of sales into the second quarter in Canada. Commercial sales improved but were affected by delayed returns to offices due to the Delta variant. Last year we benefited from a very large order of Kensington computer accessories that did not repeat this year. The absence of this order impacted sales more than $22 million. Excluding this large order, computer accessory sales continued to show double-digit growth, and Kensington overall had an improved gross margin.

We raised sales prices, which were effective towards the middle of the quarter, and therefore should provide more margin recovery in the fourth quarter.

For the nine months ended September 30, 2021, net sales increased due to PowerA, which added $137.1 million, mainly in the mass and e-tail channels. Favorable foreign exchange increased net sales $6.9 million, or 1.1 percent. Comparable sales decreased due to a decline in the first quarter from COVID-19 impacts, although we have experienced improving demand since.

For the three months ended September 30, 2021, operating income and operating margin increased, primarily due to higher sales and a favorable product mix, $0.5 million of lower restructuring costs, and a $2.5 million contribution from PowerA, which included $3.3 million of increased amortization related to the acquisition. Favorable foreign exchange contributed $0.4 million. The benefit from the higher comparable sales increase (which included increased sales prices) and

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long-term cost reduction efforts was partly offset by higher logistics and commodity inflation and increased SG&A expenses. The increased SG&A expenses result from the current period including PowerA and the 2020 period benefiting from many pandemic-related, short-term cost reduction measures. The change in the fair value of the contingent consideration is not allocated against the segment results.

For the nine months ended September 30, 2021, operating income and operating margin increased primarily due to a $10.1 million contribution from PowerA, which included $9.9 million of increased amortization related to the acquisition, and $3.0 million of inventory step-up charges. Restructuring charges were $2.6 million lower, and favorable foreign exchange added $1.2 million. Excluding the items noted above, operating income increased $11.1 million due to higher sales. Long-term cost reduction benefits and price increases were partially offset by cost increases related to international logistics, commodities and more normalized SG&A expense levels.

ACCO Brands EMEA

	Three Months Ended September 30,						Amount of Change					Nine Months Ended September 30,						Amount of Change
(in millions)	2021			2020			$		%/pts			2021			2020			$		%/pts
Net sales	$	161.1		$	136.4		$	24.7	18.1	%		$	475.0		$	352.2		$	122.8	34.9	%
Segment operating income(1)	13.4			16.7			(3.3)		(19.8)	%		40.1			26.9			13.2		49.1	%
Segment operating income margin	8.3		%	12.2		%			(3.9)		pts	8.4		%	7.6		%			0.8		pts
Comparable net sales (Non-GAAP)(2)	$	150.5		136.4			$	14.1	10.3	%		$	422.8		$	352.2		$	70.6	20.1	%

(1) Segment operating income excludes corporate costs. See "Part I, Item 1. Note 17. Information on Business Segments," for a reconciliation of total "Segment operating income" to "Income before income tax."

(2) See reconciliation to GAAP, contained in Part I, Item 2. "Supplemental Non-GAAP Financial Measure."

FX Impact vs US$	2021 3rd QTR Avg vs. 2020 3rd QTR Avg	2021 YTD Avg vs. 2020 YTD Avg
Currency	Increase/(Decline)	Increase/(Decline)
Euro	1%	6%
Swedish krona	3%	11%
British pound	7%	9%

For the three months ended September 30, 2021, net sales increased primarily because of improved demand due to economic recovery and market share gains that included higher sales of new products, including those from the acquisition of the Franken product range. Favorable foreign exchange contributed $2.3 million, and PowerA added $8.3 million. Comparable sales exceeded third quarter 2019 levels. Even though the pandemic continues to adversely impact demand, EMEA is benefiting from higher vaccination rates and less adverse impacts from the Delta variant.

For the nine months ended September 30, 2021, net sales increased primarily because of the same drivers cited above, with strong comparable sales growth coming from computer accessories, do-it-yourself tools, home-use filing items, shredders, air purifiers, and art supplies, along with an increase for many commercial product categories. Favorable foreign exchange added $28.1 million, and PowerA added $24.1 million.

For the three months ended September 30, 2021, operating income and operating margin decreased primarily due to a lower gross margin from higher logistics and commodity costs, as well as increased SG&A expenses as the prior period benefited from many pandemic-related, short-term cost reduction measures, including $1.1 million of higher government assistance. These factors were partially offset by higher sales. Foreign exchange benefited operating income $0.2 million, and PowerA contributed $1.8 million.

For the nine months ended September 30, 2021, operating income and operating margin increased primarily due to increases in the first half, which were partially offset by declines in the third quarter from the reasons cited above for the three-month period, including $2.0 million of higher government assistance in 2020. Foreign exchange benefited operating income $3.0 million, and PowerA contributed $4.8 million.

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ACCO Brands International

	Three Months Ended September 30,						Amount of Change					Nine Months Ended September 30,						Amount of Change
(in millions)	2021			2020			$		%/pts			2021			2020			$		%/pts
Net sales	$	78.1		$	69.2		$	8.9	12.9	%		$	208.6		$	204.9		$	3.7	1.8	%
Segment operating income(1)	7.3			3.7			3.6		97.3	%		10.7			5.2			5.5		105.8	%
Segment operating income margin	9.3		%	5.3		%			4.0		pts	5.1		%	2.5		%			2.6		pts
Comparable net sales (Non-GAAP)(2)	$	72.4		69.2			$	3.2	4.7	%		$	188.6		204.9			$	(16.3)	(8.0)	%

(1) Segment operating income excludes corporate costs. See "Part I, Item 1. Note 17. Information on Business Segments," for a reconciliation of total "Segment operating income" to "Income before income tax."

(2) See reconciliation to GAAP, contained in Part I, Item 2. "Supplemental Non-GAAP Financial Measure."

FX Impact vs US$	2021 3rd QTR Avg vs. 2020 3rd QTR Avg	2021 YTD Avg vs. 2020 YTD Avg
Currency	Increase/(Decline)	Increase/(Decline)
Brazilian real	3%	(6)%
Australian dollar	3%	12%
Mexican peso	10%	8%
Japanese yen	(3)%	(1)%

For the three months ended September 30, 2021, net sales rose due to price increases, the acquisition of Power A, which added $3.4 million, and favorable foreign exchange of $2.3 million. Comparable sales rose mainly due to price increases and some recovering demand. Our International markets have the lowest vaccination rates of our segments, and the consequence of these low rates was reflected in very poor back-to-school sales in Mexico and lockdowns in Australia throughout the entire third quarter due to outbreaks of the Delta variant.

There was a substantial pick up in vaccination rates towards the end of the quarter that bodes well for the seasonally important Southern Hemisphere back-to-school season in Australia and Brazil, which spans the fourth and first quarters. Children in Brazil, particularly in the highly populated state of Sao Paulo, started to return to in-person education in the third quarter. We expect the back-to-school season in Brazil to be larger than prior year; however, we anticipate that some sales are likely to move into the first quarter of 2022.

For the nine months ended September 30, 2021, net sales increased, as a result of favorable foreign exchange, which added $11.0 million, PowerA, which contributed $9.0 million, and higher pricing. Comparable sales declined due to lower demand related to the continuing impact of COVID-19, particularly in the first quarter.

For the three months ended September 30, 2021, operating income and operating margin improved primarily as a result of long-term cost reductions, some benefit from higher pricing, and PowerA, which added $0.9 million. These factors were partially offset by higher SG&A expenses as the prior year benefited from many pandemic-related, short-term cost reduction measures, including $1.7 million of higher government assistance. Foreign exchange increased operating income $0.2 million.

For the nine months ended September 30, 2021, operating income and operating margin improved due to long-term cost reductions, lower reserves for bad debts and inventory, and PowerA, which contributed $2.1 million. These factors were partially offset by higher SG&A expense as the prior year benefited from many pandemic-related, short-term cost reduction measures, including $3.1 million of higher government assistance. Restructuring costs were $0.3 million lower and foreign exchange increased operating income $1.7 million. Excluding PowerA and foreign exchange, operating income increased slightly.

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Liquidity and Capital Resources

Our primary liquidity needs are to support our working capital requirements, service indebtedness and fund capital expenditures, dividends and acquisitions. Our principal sources of liquidity are cash flows from operating activities, cash and cash equivalents held and seasonal borrowings under our $600 million multi-currency revolving credit facility (the "Revolving Facility"). As of September 30, 2021, there was $153.0 million in borrowings outstanding under the Revolving Facility ($7.9 million reported in "Current portion of long-term debt" and $145.1 million reported in "Long-term debt, net"), we had $58.1 million in cash on hand, and the amount available for borrowings was $434.5 million (allowing for $12.5 million of letters of credit outstanding on that date). We maintain adequate financing arrangements at market rates.

As of September 30, 2021, our Consolidated Leverage Ratio was approximately 3.8 to 1.00 versus our maximum covenant of 5.25 to 1.00. We have no debt maturities before March 2026.

Given the debt incurred in connection with our acquisition of PowerA, our near-term use of cash will be to fund our dividend and reduce debt. Our long-term strategy remains to deploy cash to fund dividends, reduce debt, make acquisitions and repurchase stock.

The $547.0 million of debt currently outstanding under our senior secured credit facilities has a weighted average interest rate of 2.30 percent as of September 30, 2021, and $575.0 million outstanding principal amount of our senior unsecured notes due 2026 have a fixed interest rate of 4.25 percent.

Adequacy of Liquidity Sources

We believe that cash flow from operations, our current cash balance and other sources of liquidity, including borrowings available under our Revolving Facility, will be adequate to support our requirements for working capital, capital and restructuring expenditures and to service indebtedness for the foreseeable future.

Restructuring and Integration Activities

From time to time the Company may implement restructuring, realignment or cost-reduction plans and activities, including those related to integrating acquired businesses.

The restructuring provision was $0.3 million and $4.2 million for the three and nine months ended September 30, 2021, respectively, primarily related to the Company's cost reduction programs representing expected severance costs mainly in North America. Additional charges were also taken in Brazil, EMEA and Mexico. For additional details, see "Note 10. Restructuring" to the condensed consolidated financial statements contained in "Part I, Item 1. Financial Information" of this Quarterly Report on Form 10-Q.

In addition, for the three and nine months ended September 30, 2021, the Company recorded an aggregate $1.0 million and $2.5 million in non-restructuring integration expenses related to the integration of PowerA with ACCO Brands' operations, respectively.

Cash Flow for the Nine Months Ended September 30, 2021 and 2020

Cash Flow from Operating Activities

Cash provided by operating activities during the nine months ended September 30, 2021 was $44.0 million, an increase of $22.2 million compared to cash provided by operating activities of $21.8 million during the prior year's first nine months. The improvement in cash provided by operating activities was primarily due to a decrease in cash used for accrued expenses and other liabilities of $50.5 million, an increase in the fair value of the contingent earnout of $16.5 million, higher depreciation and amortization costs of $12.3 million, and higher stock-based compensation of $7.0 million, partially offset by more cash used for investments in our working capital of $62.6 million, which is primarily due to the PowerA Acquisition.

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The table below shows our cash flow used or provided by the components of net working capital for the nine months ended September 30, 2021 and 2020:

	Nine Months Ended				Amount of Change
(in millions)	September 30, 2021		September 30, 2020
Accounts receivable	$	(18.3)	$	78.7	$	(97.0)
Inventories	(116.2)		(28.4)		(87.8)
Accounts payable	55.1		(67.1)		122.2
Cash flow (used) provided by net working capital	$	(79.4)	$	(16.8)	$	(62.6)

•Accounts receivable was a use of cash of $18.3 million during the nine months ended September 30, 2021, an unfavorable change of $97.0 million compared to a source of cash of $78.7 million during the first nine months ended September 30, 2020. The $97.0 million unfavorable change was due to strong sales (including $25.7 million in receivables from PowerA) during the nine months ended September 30, 2021, as compared to lower sales during the nine months ended September 30, 2020, driven by COVID-19 impacts.

•Inventories was a use of cash of $116.2 million during the nine months ended September 30, 2021, an unfavorable change of $87.8 million when compared with the $28.4 million cash used during the nine months ended September 30, 2020. The use of cash for inventory was higher during the nine months ended September 30, 2021, compared to the nine months ended September 30, 2020, as a result of the Company increasing inventory to secure supply for the back-to-school season, and to support the growth in PowerA ($47.8 million) as well as increased purchases due to supply chain disruptions related to international shipping.

•Accounts payable was a source of cash of $55.1 million during the nine months ended September 30, 2021, a favorable change of $122.2 million when compared to a use of cash of $67.1 million during the nine months ended September 30, 2020. The source of cash for accounts payable was a result of the Company purchasing more inventory due to higher sales, including for back-to-school, and PowerA ($26.9 million).

Cash Flow from Investing Activities

Cash provided by investing activities was $1.5 million and cash used by investing activities was $11.2 million for the nine months ended September 30, 2021 and 2020, respectively. Cash used for capital expenditures was up $2.1 million primarily for the integration of PowerA into SAP. Cash provided by acquisitions increased by $14.8 million, primarily from a working capital adjustment received from the seller of PowerA due to having delivered less working capital than required in the acquisition agreement, partly offset by cash paid for the Franken acquisition.

Cash Flow from Financing Activities

Cash used by financing activities was $22.5 million for the nine months ended September 30, 2021, a decrease of $71.1 million, compared with cash provided of $48.6 million by financing activities during the first nine months of the prior year. The decrease of $71.1 million primarily relates to a reduction of cash used for share repurchases of $18.9 million in 2020 and a decrease in cash provided by our incremental net borrowings of $72.7 million during the first nine months of 2021, compared to the prior year’s first nine months. In addition, there were cash outflows of $9.8 million related to the call premium on early redemption of our Prior Notes and $8.9 million increase in cash outflows for payments of debt issuance costs associated with our bond and bank debt refinancing in the 2021 first quarter.

Credit Facilities and Notes Covenants

As of September 30, 2021, our Consolidated Leverage Ratio was approximately 3.8 to 1.00 versus our maximum covenant of 4.75 to 1.00.

Guarantees and Security

Generally, obligations under the Credit Agreement are guaranteed by certain of the Company’s existing and future subsidiaries, and are secured by substantially all of the Company’s and certain guarantor subsidiaries’ assets, subject to certain exclusions and limitations.

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Supplemental Non-GAAP Financial Measure

To supplement our condensed consolidated financial statements presented in accordance with generally accepted accounting principles in the U.S. ("GAAP"), we provide investors with certain non-GAAP financial measures, including comparable net sales. Comparable net sales represent net sales excluding the impact of material acquisitions and with current-period foreign operation sales translated at prior-year currency rates. We sometimes refer to comparable net sales as comparable sales.

We use comparable net sales both to explain our results to stockholders and the investment community and in the internal evaluation and management of our business. We believe comparable net sales provide management and investors with a more complete understanding of our underlying operational results and trends, facilitate meaningful period-to-period comparisons and enhance an overall understanding of our past and future financial performance. Comparable net sales should not be considered in isolation or as a substitute for, or superior to, the directly comparable GAAP financial measure and should be read in connection with the Company's financial statements presented in accordance with GAAP.

The following tables provide a reconciliation of GAAP net sales change as reported to non-GAAP comparable net sales change:

	Comparable Net Sales - Three Months Ended September 30, 2021
		Non-GAAP
	GAAP		Currency		Comparable
(in millions)	Net Sales		Translation	Acquisition	Net Sales
ACCO Brands North America	$287.5		$2.0	$45.1	$240.4
ACCO Brands EMEA	161.1		2.3	8.3	150.5
ACCO Brands International	78.1		2.3	3.4	72.4
Total	$526.7		$6.6	$56.8	$463.3
	Amount of Change - Three Months Ended September 30, 2021 compared to the Three Months Ended September 30, 2020
	$ Change - Net Sales
		Non-GAAP
	GAAP				Comparable
	Net Sales		Currency		Net Sales
(in millions)	Change		Translation	Acquisition	Change
ACCO Brands North America	$49.0		$2.0	$45.1	$1.9
ACCO Brands EMEA	24.7		2.3	8.3	14.1
ACCO Brands International	8.9		2.3	3.4	3.2
Total	$82.6		$6.6	$56.8	$19.2
	% Change - Net Sales
		Non-GAAP
	GAAP				Comparable
	Net Sales		Currency		Net Sales
	Change		Translation	Acquisition	Change
ACCO Brands North America	20.5%		0.8%	18.9%	0.8%
ACCO Brands EMEA	18.1%		1.7%	6.1%	10.3%
ACCO Brands International	12.9%		3.3%	4.9%	4.7%
Total	18.6%		1.5%	12.8%	4.3%

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	Comparable Net Sales - Nine Months Ended September 30, 2021
		Non-GAAP
	GAAP		Currency		Comparable
(in millions)	Net Sales		Translation	Acquisition	Net Sales
ACCO Brands North America	$771.4		$6.9	$137.1	$627.4
ACCO Brands EMEA	475.0		28.1	24.1	422.8
ACCO Brands International	208.6		11.0	9.0	188.6
Total	$1,455.0		$46.0	$170.2	$1,238.8
	Amount of Change - Nine Months Ended September 30, 2021 compared to the Nine Months Ended September 30, 2020
	$ Change - Net Sales
		Non-GAAP
	GAAP				Comparable
	Net Sales		Currency		Net Sales
(in millions)	Change		Translation	Acquisition	Change
ACCO Brands North America	$133.4		$6.9	$137.1	$(10.6)
ACCO Brands EMEA	122.8		28.1	24.1	70.6
ACCO Brands International	3.7		11.0	9.0	(16.3)
Total	$259.9		$46.0	$170.2	$43.7
	% Change - Net Sales
		Non-GAAP
	GAAP				Comparable
	Net Sales		Currency		Net Sales
	Change		Translation	Acquisition	Change
ACCO Brands North America	20.9%		1.1%	21.5%	(1.7)%
ACCO Brands EMEA	34.9%		8.0%	6.8%	20.1%
ACCO Brands International	1.8%		5.4%	4.4%	(8.0)%
Total	21.7%		3.8%	14.2%	3.7%

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See "Part II, Item 7A. Quantitative and Qualitative Disclosures about Market Risk" of the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. There have been no material changes to Foreign Exchange Risk Management or Interest Rate Risk Management in the quarter ended September 30, 2021 or through the date of this report.

ITEM 4. CONTROLS AND PROCEDURES

(a) Evaluation of Disclosure Controls and Procedures.

As of the end of the period covered by this Quarterly Report on Form 10-Q, we carried out an evaluation under the supervision of the Chief Executive Officer and the Chief Financial Officer, and with the participation of our Disclosure Committee, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended). Based upon that evaluation, the Chief Executive Officer and the Chief Financial Officer have concluded that our disclosure controls and procedures were effective as of September 30, 2021.

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(b) Changes in Internal Control over Financial Reporting.

There were no changes in our internal control over financial reporting that occurred during the quarter ended September 30, 2021 that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

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PART II — OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

There are various claims, lawsuits and pending actions against us incidental to our operations, including the income tax assessments against our Brazilian subsidiary, Tilibra Produtos de Papelaria Ltda (the "Brazil Tax Assessments"), which is more fully described in our Annual Report on Form 10-K for the year ended December 31, 2020 and in "Part I, Item 1. Note 11. Income Taxes Brazil Tax Assessments to the Condensed Consolidated Financial Statements contained in this Quarterly Report on Form 10-Q.

It is the opinion of management that (other than the Brazil Tax Assessments) the ultimate resolution of currently outstanding matters will not have a material adverse effect on our financial condition, results of operations or cash flow. However, there is no assurance that we will ultimately be successful in our defense of any of these matters or that an adverse outcome in any matter will not affect our results of operations, financial condition or cash flow. Further, future claims, lawsuits and legal proceedings could materially and adversely affect our business, reputation, results of operations, and financial condition.

ITEM 1A. RISK FACTORS

There have been no material changes in our risk factors from those disclosed in "Part I, Item 1A. Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2020 and those disclosed in "Part II, Item 1A. Risk Factors" in our Quarterly Report on Form 10-Q for the quarter ended June 30, 2021.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

(a) Not applicable.

(b) Not applicable.

(c) Common Stock Purchases

The following table provides information about our purchases of equity securities during the quarter ended September 30, 2021:

Period	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan or Program(1)	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Program(1)
July 1, 2021 to July 31, 2021	—	$	—	—	$	125,045,248
August 1, 2021 to August 31, 2021	—	—		—	125,045,248
September 1, 2021 to September 30, 2021	—	—		—	125,045,248
Total	—	$	—	—	$	125,045,248

(1) On February 14, 2018, the Company announced that its Board of Directors had approved an authorization to repurchase up to $100 million in shares of its common stock. On August 7, 2019, the Company announced that its Board of Directors had approved an authorization to repurchase up to an additional $100 million in shares of its common stock.

The number of shares to be purchased, if any, and the timing of purchases will be based on the Company's stock price, leverage ratios, cash balances, general business and market conditions, and other factors, including alternative investment opportunities and working capital needs. The Company may repurchase its shares, from time to time, through a variety of methods, including open-market purchases, privately negotiated transactions and block trades or pursuant to repurchase plans designed to comply with the Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. Any stock repurchases will be subject to market conditions, SEC regulations and other considerations and may be commenced or suspended at any time or from time to time, without prior notice. Accordingly, there is no guarantee as to the number of shares that will be repurchased or the timing of such repurchases.

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ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

None.

ITEM 6. EXHIBITS

Exhibit

Number        Description of Exhibit

31.1    Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 *

31.2    Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 *

32.1    Certification of the Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 **

32.2    Certification of the Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 **

101.INS    Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document

101.SCH    Inline XBRL Taxonomy Extension Schema Document

101.CAL    Inline XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF    Inline XBRL Taxonomy Extension Definition Linkbase Document

101.LAB    Inline XBRL Taxonomy Extension Label Linkbase Document

101.PRE        Inline XBRL Taxonomy Extension Presentation Linkbase Document

104    Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

* Filed herewith.

** Furnished herewith.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

REGISTRANT:
ACCO BRANDS CORPORATION
By:	/s/ Boris Elisman
Boris Elisman
Chairman and Chief Executive Officer (principal executive officer)
By:	/s/ Neal V. Fenwick
Neal V. Fenwick
Executive Vice President and Chief Financial Officer (principal financial officer)
By:	/s/ James M. Dudek, Jr.
James M. Dudek, Jr.
Senior Vice President, Corporate Controller and Chief Accounting Officer (principal accounting officer)

Date: October 28, 2021

48

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Boris Elisman, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of ACCO Brands Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

By:	/s/ Boris Elisman
	Boris Elisman
	Chairman and Chief Executive Officer

Date: October 28, 2021

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Neal V. Fenwick, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of ACCO Brands Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

By:	/s/ Neal V. Fenwick
	Neal V. Fenwick
	Executive Vice President and Chief Financial Officer

Date: October 28, 2021

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

As adopted pursuant to

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of ACCO Brands Corporation on Form 10-Q for the period ended September 30, 2021 as filed with the Securities and Exchange Commission on the date hereof, (the "Report"), I, Boris Elisman, Chief Executive Officer of ACCO Brands Corporation, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of ACCO Brands Corporation.

By:	/s/ Boris Elisman
	Boris Elisman
	Chairman and Chief Executive Officer

Date: October 28, 2021

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

As adopted pursuant to

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of ACCO Brands Corporation on Form 10-Q for the period ended September 30, 2021 as filed with the Securities and Exchange Commission on the date hereof, (the "Report"), I, Neal V. Fenwick, Chief Financial Officer of ACCO Brands Corporation, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of ACCO Brands Corporation.

By:	/s/ Neal V. Fenwick
	Neal V. Fenwick
	Executive Vice President and Chief Financial Officer

Date: October 28, 2021

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	Sep. 30, 2021	Oct. 21, 2021
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Document Type	10-Q
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Document Period End Date	Sep. 30, 2021
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Entity File Number	001-08454
Entity Registrant Name	ACCO Brands Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-2704017
Entity Address, Address Line One	Four Corporate Drive
Entity Address, City or Town	Lake Zurich
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60047
City Area Code	847
Local Phone Number	541-9500
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	ACCO
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
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Entity Common Stock, Shares Outstanding		95,730,863
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Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 58.1	$ 36.6
Accounts receivable, net	362.6	356.0
Inventories	413.9	305.1
Other current assets	52.0	30.5
Total current assets	886.6	728.2
Total property, plant and equipment	656.3	657.8
Less: accumulated depreciation	(436.8)	(416.4)
Property, plant and equipment, net	219.5	241.4
Right of use asset, leases	84.0	89.2
Deferred income taxes	126.6	136.5
Goodwill	804.2	827.4
Identifiable intangibles, net	919.4	977.0
Other non-current assets	31.7	49.0
Total assets	3,072.0	3,048.7
Current liabilities:
Notes payable	8.1	5.7
Current portion of long-term debt	28.1	70.8
Accounts payable	233.5	180.2
Accrued compensation	53.5	41.0
Accrued customer program liabilities	91.6	91.4
Lease liabilities	21.8	22.6
Current portion of contingent consideration	22.8	10.4
Other current liabilities	126.7	134.8
Total current liabilities	586.1	556.9
Long-term debt, net	1,083.9	1,054.6
Long-term lease liabilities	70.4	76.5
Deferred income taxes	156.6	170.6
Pension and post-retirement benefit obligations	275.9	317.1
Contingent consideration	11.9	7.8
Other non-current liabilities	102.2	122.5
Total liabilities	2,287.0	2,306.0
Stockholders' equity:
Common stock	1.0	1.0
Treasury stock	(40.8)	(39.9)
Paid-in capital	1,898.4	1,883.1
Accumulated other comprehensive loss	(565.4)	(564.2)
Accumulated deficit	(508.2)	(537.3)
Total stockholders' equity	785.0	742.7
Total liabilities and stockholders' equity	$ 3,072.0	$ 3,048.7

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Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net sales		$ 526.7	$ 444.1	$ 1,455.0	$ 1,195.1
Cost of products sold		369.5	317.0	1,018.2	845.8
Gross profit		157.2	127.1	436.8	349.3
Operating costs and expenses:
Selling, general and administrative expenses		101.8	84.4	293.5	247.7
Amortization of intangibles		11.6	7.9	35.2	24.1
Restructuring charges		0.3	0.5	4.2	7.3
Change in fair value of contingent consideration		4.9	0.0	16.5	0.0
Total operating costs and expenses		118.6	92.8	349.4	279.1
Operating income	[1]	38.6	34.3	87.4	70.2
Non-operating expense (income):
Interest expense		11.2	10.2	36.0	28.7
Interest income		(0.6)	(0.2)	(1.2)	(0.8)
Non-operating pension income		(2.3)	(1.4)	(5.6)	(4.4)
Other expense, net		0.1	0.1	4.0	0.8
Income before income tax		30.2	25.6	54.2	45.9
Income tax expense		10.0	6.8	5.8	13.7
Net income		$ 20.2	$ 18.8	$ 48.4	$ 32.2
Per share:
Basic income per share (in USD per share)		$ 0.21	$ 0.20	$ 0.51	$ 0.34
Diluted income per share (in USD per share)		$ 0.21	$ 0.20	$ 0.50	$ 0.34
Weighted average number of shares outstanding:
Basic (shares)		95.6	94.5	95.4	95.0
Diluted (shares)		97.3	95.6	97.0	96.2

[1] is defined as i) net sales; ii) less cost of products sold; iii) less selling, general and administrative expenses; iv) less amortization of intangibles; v) less restructuring charges; and vi) less change in the fair value of contingent consideration.

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Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 20.2	$ 18.8	$ 48.4	$ 32.2
Other comprehensive income (loss), net of tax:
Unrealized income (loss) on derivative instruments, net of tax (expense) benefit of $(1.0) and $0.2 and $(2.9) and $0.3, respectively	2.4	(0.6)	6.7	(0.6)
Foreign currency translation adjustments, net of tax benefit (expense) of $0.2 and $0.1 and $(1.1) and $1.1, respectively	(22.3)	3.6	(18.6)	(53.7)
Recognition of deferred pension and other post-retirement items, net of tax (expense) benefit of $(2.1) and $1.2 and $(3.4) and $(1.7), respectively	6.6	(4.0)	10.7	5.8
Other comprehensive loss, net of tax	(13.3)	(1.0)	(1.2)	(48.5)
Comprehensive income (loss)	$ 6.9	$ 17.8	$ 47.2	$ (16.3)

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Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Unrealized income (loss) on derivative instruments, net of tax (expense) benefit of $(1.0) and $0.2 and $(2.9) and $0.3, respectively	$ (1.0)	$ 0.2	$ (2.9)	$ 0.3
Foreign currency translation adjustments, net of tax benefit (expense) of $0.2 and $0.1 and $(1.1) and $1.1, respectively	0.2	0.1	(1.1)	1.1
Recognition of deferred pension and other post-retirement items, net of tax (expense) benefit of $(2.1) and $1.2 and $(3.4) and $(1.7), respectively	$ (2.1)	$ 1.2	$ (3.4)	$ (1.7)

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Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities
Net income	$ 48.4	$ 32.2
Amortization of inventory step-up	3.0	0.0
Change in fair value of contingent consideration	16.5	0.0
Depreciation	29.4	28.2
Other non-cash items	0.0	0.5
Amortization of debt issuance costs	2.1	1.7
Amortization of intangibles	35.2	24.1
Stock-based compensation	12.2	5.2
Loss on debt extinguishment	3.7	0.0
Changes in balance sheet items:
Accounts receivable	(18.3)	78.7
Inventories	(116.2)	(28.4)
Other assets	(14.4)	(1.0)
Accounts payable	55.1	(67.1)
Accrued expenses and other liabilities	3.2	(47.3)
Accrued income taxes	(15.9)	(5.0)
Net cash provided by operating activities	44.0	21.8
Investing activities
Additions to property, plant and equipment	(13.9)	(11.8)
Cost of acquisitions, net of cash acquired	15.4	0.6
Net cash provided (used) by investing activities	1.5	(11.2)
Financing activities
Proceeds from long-term borrowings	651.4	231.5
Repayments of long-term debt	(638.8)	(146.4)
Proceeds of notes payable, net	2.3	2.5
Payment for debt premium	(9.8)	0.0
Payments for debt issuance costs	(10.5)	(1.6)
Dividends paid	(18.6)	(18.4)
Repurchases of common stock	0.0	(18.9)
Payments related to tax withholding for stock-based compensation	(0.9)	(1.8)
Proceeds from the exercise of stock options	2.4	1.7
Net cash (used) provided by financing activities	(22.5)	48.6
Effect of foreign exchange rate changes on cash and cash equivalents	(1.5)	(1.2)
Net increase in cash and cash equivalents	21.5	58.0
Cash and cash equivalents
Beginning of the period	36.6	27.8
End of the period	58.1	85.8
Cash paid during the year for:
Interest	33.7	21.4
Income taxes	$ 21.2	$ 20.1

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Consolidated Statements of Stockholders’ Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Accumulated Deficit
Balance at start of period at Dec. 31, 2019	$ 773.7	$ 1.0	$ 1,890.8	$ (505.7)	$ (38.2)	$ (574.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	8.0					8.0
Gain (loss) on derivative financial instruments, net of tax	2.4			2.4
Translation impact, net of tax	(49.7)			(49.7)
Pension and post-retirement adjustment, net of tax	7.9			7.9
Common stock repurchases	(18.9)		(18.9)
Stock-based compensation	0.9		0.9
Common stock issued, net of shares withheld for employee taxes	(0.2)		1.5		(1.7)
Dividends declared	(6.2)					(6.2)
Balance at end of period at Mar. 31, 2020	$ 717.9	$ 1.0	1,874.3	(545.1)	$ (39.9)	(572.4)
Balance at start of period (in shares) at Dec. 31, 2019	96,445,488	100,412,933			3,967,445
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock issued, net of shares withheld for employee taxes (in shares)	692,421	898,664			206,243
Common stock repurchases ( in shares)	(2,690,292)	(2,690,292)
Balance at end of period (in shares) at Mar. 31, 2020	94,447,617	98,621,305			4,173,688
Balance at start of period at Dec. 31, 2019	$ 773.7	$ 1.0	1,890.8	(505.7)	$ (38.2)	(574.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	32.2
Gain (loss) on derivative financial instruments, net of tax	(0.6)
Pension and post-retirement adjustment, net of tax	5.8
Balance at end of period at Sep. 30, 2020	$ 725.2	$ 1.0	1,878.9	(554.2)	$ (39.9)	(560.6)
Balance at start of period (in shares) at Dec. 31, 2019	96,445,488	100,412,933			3,967,445
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock repurchases ( in shares)	(2,700,000)
Balance at end of period (in shares) at Sep. 30, 2020	94,496,837	98,683,727			4,186,890
Balance at start of period at Mar. 31, 2020	$ 717.9	$ 1.0	1,874.3	(545.1)	$ (39.9)	(572.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5.4					5.4
Gain (loss) on derivative financial instruments, net of tax	(2.4)			(2.4)
Translation impact, net of tax	(7.6)			(7.6)
Pension and post-retirement adjustment, net of tax	1.9			1.9
Stock-based compensation	2.5		2.6			(0.1)
Dividends declared	(6.1)					(6.1)
Balance at end of period at Jun. 30, 2020	$ 711.6	$ 1.0	1,876.9	(553.2)	$ (39.9)	(573.2)
Balance at start of period (in shares) at Mar. 31, 2020	94,447,617	98,621,305			4,173,688
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock issued, net of shares withheld for employee taxes (in shares)	14,530	26,957			12,427
Balance at end of period (in shares) at Jun. 30, 2020	94,462,147	98,648,262			4,186,115
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 18.8					18.8
Gain (loss) on derivative financial instruments, net of tax	(0.6)			(0.6)
Translation impact, net of tax	3.6			3.6
Pension and post-retirement adjustment, net of tax	(4.0)			(4.0)
Stock-based compensation	1.8		1.9			(0.1)
Common stock issued, net of shares withheld for employee taxes	0.1		0.1
Dividends declared	(6.1)					(6.1)
Balance at end of period at Sep. 30, 2020	$ 725.2	$ 1.0	1,878.9	(554.2)	$ (39.9)	(560.6)
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock issued, net of shares withheld for employee taxes (in shares)	34,690	35,465			775
Common stock repurchases ( in shares)	0
Balance at end of period (in shares) at Sep. 30, 2020	94,496,837	98,683,727			4,186,890
Balance at start of period at Dec. 31, 2020	$ 742.7	$ 1.0	1,883.1	(564.2)	$ (39.9)	(537.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(20.4)					(20.4)
Gain (loss) on derivative financial instruments, net of tax	4.1			4.1
Translation impact, net of tax	(20.7)			(20.7)
Pension and post-retirement adjustment, net of tax	3.6			3.6
Stock-based compensation	4.8		5.0			(0.2)
Common stock issued, net of shares withheld for employee taxes	1.0		1.9		(0.9)
Dividends declared	(6.2)					(6.2)
Other	(0.1)		(0.1)
Balance at end of period at Mar. 31, 2021	$ 708.8	$ 1.0	1,889.9	(577.2)	$ (40.8)	(564.1)
Balance at start of period (in shares) at Dec. 31, 2020	94,942,565	99,129,455			4,186,890
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock issued, net of shares withheld for employee taxes (in shares)	543,156	652,755			109,599
Balance at end of period (in shares) at Mar. 31, 2021	95,485,721	99,782,210			4,296,489
Balance at start of period at Dec. 31, 2020	$ 742.7	$ 1.0	1,883.1	(564.2)	$ (39.9)	(537.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	48.4
Gain (loss) on derivative financial instruments, net of tax	6.7
Pension and post-retirement adjustment, net of tax	10.7
Balance at end of period at Sep. 30, 2021	$ 785.0	$ 1.0	1,898.4	(565.4)	$ (40.8)	(508.2)
Balance at start of period (in shares) at Dec. 31, 2020	94,942,565	99,129,455			4,186,890
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock repurchases ( in shares)	0
Balance at end of period (in shares) at Sep. 30, 2021	95,662,069	99,964,324			4,302,255
Balance at start of period at Mar. 31, 2021	$ 708.8	$ 1.0	1,889.9	(577.2)	$ (40.8)	(564.1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	48.6					48.6
Gain (loss) on derivative financial instruments, net of tax	0.2			0.2
Translation impact, net of tax	24.4			24.4
Pension and post-retirement adjustment, net of tax	0.5			0.5
Stock-based compensation	4.2		4.4			(0.2)
Common stock issued, net of shares withheld for employee taxes	0.1		0.1		0.0
Dividends declared	(6.2)					(6.2)
Other	0.1		0.2			(0.1)
Balance at end of period at Jun. 30, 2021	$ 780.7	$ 1.0	1,894.6	(552.1)	$ (40.8)	(522.0)
Balance at start of period (in shares) at Mar. 31, 2021	95,485,721	99,782,210			4,296,489
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock issued, net of shares withheld for employee taxes (in shares)	97,160	97,160			0
Balance at end of period (in shares) at Jun. 30, 2021	95,582,881	99,879,370			4,296,489
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 20.2					20.2
Gain (loss) on derivative financial instruments, net of tax	2.4			2.4
Translation impact, net of tax	(22.3)			(22.3)
Pension and post-retirement adjustment, net of tax	6.6			6.6
Stock-based compensation	3.2		3.4			(0.2)
Common stock issued, net of shares withheld for employee taxes	0.4		0.4
Dividends declared	(6.2)					(6.2)
Balance at end of period at Sep. 30, 2021	$ 785.0	$ 1.0	$ 1,898.4	$ (565.4)	$ (40.8)	$ (508.2)
Increase (Decrease) In Capital Stock [Roll Forward]
Common stock issued, net of shares withheld for employee taxes (in shares)	79,188	84,954			5,766
Common stock repurchases ( in shares)	0
Balance at end of period (in shares) at Sep. 30, 2021	95,662,069	99,964,324			4,302,255

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Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Common stock, dividends per share, declared	$ 0.065	$ 0.065	$ 0.065	$ 0.065	$ 0.065	$ 0.065

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Basis of Presentation

9 Months Ended

Sep. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

1. Basis of Presentation

As used in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, the terms "ACCO Brands," "ACCO," the "Company," "we," "us," and "our" refer to ACCO Brands Corporation and its consolidated subsidiaries.

The management of ACCO Brands Corporation is responsible for the accuracy and internal consistency of the preparation of the condensed consolidated financial statements and notes contained in this Quarterly Report on Form 10-Q.

The condensed consolidated interim financial statements have been prepared pursuant to the rules and regulations of the SEC. Although the Company believes the disclosures are adequate to make the information presented not misleading, certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles in the U.S. ("GAAP") have been condensed or omitted pursuant to those rules and regulations. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020.

The Condensed Consolidated Balance Sheet as of September 30, 2021, the related Consolidated Statements of Income, the Consolidated Statements of Comprehensive Income (Loss), the Consolidated Statements of Stockholders' Equity for the three and nine months ended September 30, 2021 and 2020 and Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2021 and 2020 are unaudited. The December 31, 2020 Condensed Consolidated Balance Sheet data was derived from audited financial statements but does not include all annual disclosures required by GAAP. The financial statements included herein were prepared by management and reflect all adjustments (consisting solely of normal recurring items unless otherwise noted) which are, in the opinion of management, necessary for the fair presentation of results of operations and cash flows for the interim periods ended September 30, 2021 and 2020, and the financial position of the Company as of September 30, 2021. Interim results may not be indicative of results for a full year.

Effective December 17, 2020, we completed the acquisition of PowerA (the "PowerA Acquisition"), a leading provider of third-party video gaming console accessories primarily in North America. The results of PowerA are included in all three of the Company's operating business segments effective December 17, 2020. The purchase price was $321.8 million, plus an additional earnout of up to $55.0 million in cash, which is contingent upon PowerA achieving one- and two- year sales and profit growth objectives and has a fair value of $34.7 million as of September 30, 2021. The PowerA Acquisition and related expenses were funded by cash on hand, as well as borrowings from our revolving credit facility. See "Note 3. Acquisitions" for details on the PowerA Acquisition.

On April 1, 2021, we completed the acquisition of Franken Planungs-und Organisationsmittel GmbH (“Franken”), for a purchase price of €2.4 million (US$2.8 million, based on April 1, 2021 exchange rates), net of cash acquired of $1.1 million. Franken is a provider of visual communication products, including boards, markers, planning tools, as well as creative and training products. Franken is a German company that is included in the Company’s EMEA reporting segment.

The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported assets and liabilities at the date of the financial statements and the reported revenues and expenses during the reporting periods. Actual results could differ from those estimates.

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Recent Accounting Pronouncements and Adopted Accounting Standards

9 Months Ended

Sep. 30, 2021

Accounting Standards Update and Change in Accounting Principle [Abstract]

Recent Accounting Pronouncements and Adopted Accounting Standards

2. Recent Accounting Pronouncements and Adopted Accounting Standards

Recent Accounting Pronouncements

In March 2020, the Financial Accounting Standards Board ("FASB") issued ASU 2020-04, Reference Rate Reform (Topic 848), which provides optional expedients and exceptions for applying current GAAP to contracts, hedging relationships, and other transactions affected by the transition from the use of LIBOR to an alternative reference rate. We are currently evaluating our contracts and hedging relationships that reference LIBOR and the potential effects of adopting this new guidance. The guidance can be adopted immediately and is applicable to contracts entered into on or before December 31, 2022.

There are no other recently issued accounting standards that are expected to have an impact on the Company’s financial condition, results of operations or cash flow.

Recently Adopted Accounting Standards

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which removes certain exceptions for investments, intraperiod allocations and interim calculations, and adds guidance to reduce complexity in accounting for income taxes. Effective January 1, 2021, the Company adopted this standard. The adoption of this standard did not have a material impact on our condensed consolidated financial statements.

There were no other accounting standards that were adopted in the first nine months of 2021 that had a material effect on the Company’s financial condition, results of operations or cash flow.

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Acquisitions

9 Months Ended

Sep. 30, 2021

Business Combinations [Abstract]

Acquisitions

3. Acquisitions

Acquisition of Franken

On April 1, 2021, we completed the acquisition of Franken, for a purchase price of €2.4 million (US$2.8 million, based on April 1, 2021 exchange rates), net of cash acquired of $1.1 million. Franken is a provider of visual communication products, including boards, markers, planning tools, as well as creative and training products. Franken is a German company that is included in the Company’s EMEA reporting segment.

Pro forma financial information is not presented due to immateriality.

Acquisition of PowerA

Effective December 17, 2020, we completed the acquisition of PowerA, a leading provider of third-party video gaming console accessories primarily in North America. The results of PowerA are included in all three of the Company's reporting units effective December 17, 2020.

The purchase price was $321.8 million, net of a working capital adjustment received of $18.2 million, plus an additional earnout of up to $55.0 million in cash. The earnout is contingent upon PowerA achieving one- and two- year sales and profit growth objectives. The fair value of the contingent earnout liability was $34.7 million as of September 30, 2021. The PowerA Acquisition and related expenses were funded by cash on hand, as well as borrowings from our revolving credit facility.

For accounting purposes, the Company was the acquiring enterprise. The PowerA Acquisition is being accounted for as a purchase business combination and PowerA's results are included in the Company’s consolidated financial statements as of December 31, 2020. The additional net sales from PowerA during the three and nine months ended September 30, 2021 were $56.8 million and $170.2 million, respectively.

During the third quarter of 2021 we finalized our fair value estimate of assets acquired and liabilities assumed as of the acquisition date. The following table presents the allocation of the consideration given to the fair values of the assets acquired and liabilities assumed at the date of the PowerA Acquisition:

(in millions)	At December 17, 2020
Calculation of Goodwill:
Purchase price, net of working capital adjustment	$	321.8
Fair value of contingent consideration	$	18.2
Plus fair value of liabilities assumed:
Accrued liabilities	9.2
Fair value of liabilities assumed	$	9.2
Less fair value of assets acquired:
Inventory	29.3
Property and equipment	0.2
Identifiable intangibles	235.4
Other assets	13.2
Fair value of assets acquired	$	278.1
Goodwill	$	71.1

During the year ended December 31, 2020, transaction costs related to the PowerA Acquisition were $3.7 million, and for the nine months ended September 30, 2021, they were $0.1 million. These costs were reported as SG&A expenses in the Company's Consolidated Statements of Income.

Unaudited Pro Forma Consolidated Results

The unaudited pro forma information presented below is not intended to represent, nor do we believe it is indicative of, the consolidated results of operations of the Company that would have been reported had the PowerA Acquisition been completed on January 1, 2019. Furthermore, the unaudited pro forma information does not give effect to the anticipated synergies or other anticipated benefits of the PowerA Acquisition.

Had the PowerA Acquisition occurred on January 1, 2019, unaudited pro forma consolidated results of the Company for the three and nine months ended September 30, 2021 and 2020 would have been as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Net sales	$	526.7	$	501.4	$	1,455.0	$	1,325.5
Net income	20.2		24.9		48.4		41.6
Net income per diluted common share	$	0.21	$	0.26	$	0.50	$	0.43

The pro forma amounts are based on the Company's historical results and the historical results for the acquired PowerA business. The pro forma results of operations have been adjusted to include amortization of finite-lived intangibles, and other charges related to the accounting by the Company for the PowerA Acquisition.

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Long-Term Debt and Short-Term Borrowings

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Long-Term Debt and Short-Term Borrowings

4. Long-term Debt and Short-term Borrowings

Notes payable and long-term debt, listed in order of the priority of security interests in assets of the Company, consisted of the following as of September 30, 2021 and December 31, 2020:

(in millions)	September 30, 2021		December 31, 2020
Euro Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.25% at September 30, 2021)	$	264.3	$	—
Euro Senior Secured Term Loan A, due May 2024 (floating interest rate of 2.50% at December 31, 2020)	—		287.4
USD Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.38% at September 30, 2021)	90.2		—
USD Senior Secured Term Loan A, due May 2024 (floating interest rate of 3.50% at December 31, 2020)	—		92.5
Australian Dollar Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.32% at September 30, 2021)	39.5		—
Australian Dollar Senior Secured Term Loan A, due May 2024 (floating interest rate of 2.57% at December 31, 2020)	—		43.4
U.S. Dollar Senior Secured Revolving Credit Facility, due March 2026 (floating interest rate of 2.33% at September 30, 2021)	120.4		—
U.S. Dollar Senior Secured Revolving Credit Facility, due May 2024 (floating interest rate of 3.50% at December 31, 2020)	—		307.2
Australian Dollar Senior Secured Revolving Credit Facility, due March 2026 (floating interest rate of 2.31% at September 30, 2021)	32.6		—
Australian Dollar Senior Secured Revolving Credit Facility, due May 2024 (floating interest rate of 2.57% at December 31, 2020)	—		25.4
Senior Unsecured Notes, due March 2029 (fixed interest rate of 4.25%)	575.0		—
Senior Unsecured Notes, due December 2024 (fixed interest rate of 5.25%)	—		375.0
Other borrowings	8.1		5.7
Total debt	1,130.1		1,136.6
Less:
Current portion	36.2		76.5
Debt issuance costs, unamortized	10.0		5.5
Long-term debt, net	$	1,083.9	$	1,054.6

The Company entered into a Third Amended and Restated Credit Agreement (the "Credit Agreement"), dated as of January 27, 2017, among the Company, certain subsidiaries of the Company, Bank of America, N.A., as administrative agent, and the other agents and various lenders party thereto. The Credit Agreement provided for a five-year senior secured credit facility, which consisted of a €300.0 million (US$320.8 million based on January 27, 2017, exchange rates) term loan facility (the "Euro Term Loan"), an A$80.0 million (US$60.4 million based on January 27, 2017, exchange rates) term loan facility (the "Australian Term Loan"), and a US$400.0 million multi-currency revolving credit facility (the "Revolving Facility").

Effective July 26, 2018, the Company entered into the First Amendment (the "First Amendment") to the Credit Agreement. The First Amendment increased the aggregate revolving credit commitments under the Revolving Facility by $100.0 million such that, after giving effect to such increase, the aggregate amount of revolving credit available under the Revolving Facility was $500.0 million. In addition, the First Amendment also affected certain technical amendments to the Credit Agreement, including the addition of provisions relating to LIBOR successor rate procedures if LIBOR becomes unascertainable or is discontinued in the future and to expressly permit certain intercompany asset transfers. The changes related to LIBOR successor rate procedures are not expected to have a material effect on the Company.

Effective May 23, 2019, the Company entered into a Second Amendment (the "Second Amendment") to the Credit Agreement. Pursuant to the Second Amendment, the Credit Agreement was amended to, among other things:

•extend the maturity date to May 23, 2024;

•further increase the aggregate revolving credit commitments under the Revolving Facility from $500.0 million to $600.0 million;

•establish a new term loan facility denominated in U.S. Dollars in an aggregate principal amount of $100.0 million (the "USD Term Loan");

•replace the minimum fixed coverage ratio of 1.25:1.00 with a minimum Interest Coverage Ratio (as defined in the Credit Agreement) of 3.00:1.00; and

•reflect a more favorable restricted payment covenant, with the Consolidated Leverage Ratio (as defined in the Credit Agreement) hurdle for unlimited restricted payments (including share repurchases and dividends) as calculated under the Credit Agreement increasing from 2.50:1.00 to 3.25:1.00.

Effective May 1, 2020, the Company entered into a Third Amendment (the "Third Amendment") to the Credit Agreement pursuant to which the Credit Agreement was amended to, among other things:

•increase the maximum Consolidated Leverage Ratio from 3.75:1.00 to 4.75:1.00, stepping back down to 3.75:1.00 for the first fiscal quarter ending after June 30, 2021;

•amend the pricing based on the Company’s Consolidated Leverage Ratio, with a scaled increase in interest rates and fees, effective May 1, 2020;

•reduce the Company’s capacity to incur certain other indebtedness, and impose additional limitations on certain restricted payments (other than dividends) and permitted acquisitions; and

•require that the Company pay down any amounts on the Revolving Facility when cash and cash equivalents of the loan parties exceed $100.0 million.

In connection with the PowerA Acquisition, effective November 10, 2020, the Company entered into a Fourth Amendment (the "Fourth Amendment") to the Credit Agreement pursuant to which the Credit Agreement was amended to, among other things:

•provide flexibility under the permitted acquisition provisions to accommodate the acquisition of PowerA;

•further amend the maximum Consolidated Leverage Ratio financial covenant for each of the six fiscal quarters beginning March 31, 2021 and ending June 30, 2022, as follows:

Quarter Ended	Maximum Consolidated Leverage Ratio
March 2021	5.25:1.00
June 2021	5.25:1.00
September 2021	4.75:1.00
December 2021	4.25:1.00
March 2022	4.25:1.00
June 2022	4.25:1.00
September 2022 and thereafter	3.75:1.00

•exempt the borrowings made under the Credit Agreement, as amended, to fund the PowerA Acquisition from the Credit Agreement’s anti-cash hoarding clause.

We incurred and capitalized approximately $3.2 million in bank, legal and other fees associated with the Third and Fourth Amendments.

Effective March 31, 2021, the Company entered into a Fifth Amendment (the “Fifth Amendment”) to the Credit Agreement. Pursuant to the Fifth Amendment, the Credit Agreement was amended to, among other things:

•further extend the maturity date from May 23, 2024 to March 31, 2026;

•further modify the maximum Consolidated Leverage Ratio financial covenant such that for the fiscal quarter ending September 30, 2022 and thereafter, the maximum leverage ratio is set at 4.00:1.00;

•reflect more favorable pricing at higher Consolidated Leverage Ratio levels along with lower fees on undrawn amounts, as follows:

Consolidated Leverage Ratio	Applicable Rate on Euro/AUD/CDN Dollar Loans	Applicable Rate on Base Rate Loans	Undrawn Fee
> 4.50 to 1.00	2.50%	1.50%	0.500%
≤ 4.50 to 1.00 and > 4.00 to 1.00	2.25%	1.25%	0.375%
≤ 4.00 to 1.00 and > 3.50 to 1.00	2.00%	1.00%	0.350%
≤ 3.50 to 1.00 and > 3.00 to 1.00	1.75%	0.75%	0.300%
≤ 3.00 to 1.00 and > 2.00 to 1.00	1.50%	0.50%	0.250%
≤ 2.00 to 1.00	1.25%	0.25%	0.200%

•eliminate the LIBOR rate floor for U.S. dollar loans.

Under the Fifth Amendment, pricing was locked at LIBOR plus 2.25 percent until the Company published its financial results for the fiscal quarter ended June 30, 2021, and it became subject to the above leverage-based pricing grid thereafter.

Senior Unsecured Notes

On March 15, 2021, the Company completed a private offering of $575.0 million in aggregate principal amount of 4.25% Senior Notes due March 2029 (the "New Notes"), which were issued under an indenture, dated as of March 15, 2021 (the "New Indenture"), among the Company, as issuer, the guarantors named therein and Wells Fargo Bank, National Association, as trustee. Interest on the New Notes is payable semiannually on March 15 and September 15 of each year, beginning on September 15, 2021.

The New Notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by each of the Company’s existing and future U.S. subsidiaries, other than certain excluded subsidiaries.

The New Indenture contains covenants that limit the ability of the Company and its restricted subsidiaries’ ability to, among other things: (i) incur additional indebtedness or issue disqualified stock or, in the case of the Company’s restricted subsidiaries, preferred stock; (ii) create liens; (iii) pay dividends, make certain investments or make other restricted payments; (iv) sell certain assets or merge with or into other companies; (v) enter into transactions with affiliates; and (vi) in the case of a restricted subsidiary, pay dividends, loans, or assets to the Company or other restricted subsidiaries. These covenants are subject to a number of important limitations and exceptions. The New Indenture also provides for events of default, which, if any of them occurs, would permit or require the principal, premium, if any, and accrued but unpaid interest on all the then outstanding New Notes to be immediately due and payable.

In addition, effective March 15, 2021, the Company irrevocably deposited with the trustee of its 5.25% Senior Notes due 2024 (the "Prior Notes") an amount necessary to pay the aggregate redemption price for the Prior Notes, and satisfied and discharged all its obligations related to the Prior Notes indenture. Proceeds from the offering of the New Notes were applied toward the payment of the aggregate redemption price for the Prior Notes, the repayment of approximately $178.0 million of the Company’s outstanding borrowings under its Revolving Facility and to pay fees and expenses related to the offering of the New Notes. The Prior Notes were redeemed on March 31, 2021 at an aggregate redemption price of $390.6 million, consisting

of $375 million of the principal due and payable on the Prior Notes, a call premium of $9.8 million (included in "Other expense, net"), and accrued and unpaid interest of $5.8 million (included in "Interest expense").

Also included in "Other expense, net" is a $3.7 million charge for the write-off of debt issuance costs. Additionally, we incurred and capitalized approximately $8.2 million in bank, legal and other fees associated with the issuance of the New Notes.

As of September 30, 2021, there were $153.0 million in borrowings outstanding under the Revolving Facility. The remaining amount available for borrowings was $434.5 million (allowing for $12.5 million of letters of credit outstanding on that date).

As of September 30, 2021, our Consolidated Leverage Ratio was approximately 3.8 to 1.00 versus our maximum covenant of 4.75 to 1.00.

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Leases

9 Months Ended

Sep. 30, 2021

Leases [Abstract]

Leases

5. Leases

The Company leases its corporate headquarters, various other facilities for distribution, manufacturing, and offices, as well as vehicles, forklifts and other equipment. The Company determines if an arrangement is a lease at inception. Leases are included in "Right of use asset, leases" ("ROU Assets"), and the current portion of the lease liability is included in "Lease liabilities" and the non-current portion is included in "Long-term lease liabilities" in the Condensed Consolidated Balance Sheets. The Company currently has an immaterial amount of financing leases and leases with terms of more than one month and less than 12 months. ROU Assets and lease liabilities are recognized based on the present value of lease payments over the lease term. Because most of the Company’s leases do not provide an implicit rate of return, the Company uses its incremental collateralized borrowing rate, on a regional basis, in determining the present value of lease payments. The incremental borrowing rate is dependent upon the duration of the lease and has been segmented into three groups of time. All leases within the same region and the same group of time share the same incremental borrowing rate. The Company has lease agreements with lease and non-lease components, which are combined for accounting purposes for all classes of assets except information technology equipment.

The components of lease expense were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Operating lease cost	$	8.1	$	6.7	$	22.3	$	21.0
Sublease income	(0.9)		(0.2)		(1.5)		(0.9)
Total lease cost	$	7.2	$	6.5	$	20.8	$	20.1

Other information related to leases was as follows:

	Nine Months Ended September 30,
(in millions, except lease term and discount rate)	2021			2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	23.8		$	21.5
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	15.0			3.3
	As of
	September 30, 2021
Weighted average remaining lease term:
Operating leases	6.15 years
Weighted average discount rate:
Operating leases	5.1		%

Future minimum lease payments, net of sub-lease income, for all non-cancelable leases as of September 30, 2021, were as follows:

(in millions)
2021	$	6.9
2022	24.1
2023	18.3
2024	14.8
2025	12.0
2026	9.4
Thereafter	24.2
Total minimum lease payments	109.7
Less imputed interest	17.4
Future minimum payments for leases, net of sublease rental income and imputed interest	$	92.3

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Pension and Other Retiree Benefits

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Pension and Other Retiree Benefits

6. Pension and Other Retiree Benefits

The components of net periodic benefit (income) cost for pension and post-retirement plans for the three and nine months ended September 30, 2021 and 2020 were as follows: 

	Three Months Ended September 30,
	Pension								Post-retirement
	U.S.				International
(in millions)	2021		2020		2021		2020		2021		2020
Service cost	$	—	$	0.4	$	0.4	$	0.4	$	—	$	—
Interest cost	1.2		1.5		1.5		2.4		—		—
Expected return on plan assets	(2.9)		(2.8)		(4.7)		(4.7)		—		—
Amortization of net loss (gain)	0.9		0.8		1.7		1.3		(0.1)		(0.1)
Amortization of prior service cost	—		0.1		0.1		0.1		—		—
Net periodic benefit cost (income) (1)	$	(0.8)	$	—	$	(1.0)	$	(0.5)	$	(0.1)	$	(0.1)
	Nine Months Ended September 30,
	Pension								Post-retirement
	U.S.				International
(in millions)	2021		2020		2021		2020		2021		2020
Service cost	$	0.5	$	1.2	$	1.2	$	1.1	$	—	$	—
Interest cost	3.4		4.4		4.7		7.2		—		0.1
Expected return on plan assets	(8.5)		(8.5)		(14.5)		(13.8)		—		—
Amortization of net loss (gain)	2.7		2.4		5.3		3.7		(0.3)		(0.4)
Amortization of prior service cost	0.1		0.3		0.2		0.2		—		—
Curtailment loss(2)	1.4		—		—		—		—		—
Net periodic benefit cost (income) (1)	$	(0.4)	$	(0.2)	$	(3.1)	$	(1.6)	$	(0.3)	$	(0.3)

(1)The components of net periodic benefit cost (income), other than service cost, are included in the line "Non-operating pension income" in the Consolidated Statements of Income.

(2)Curtailment loss of $1.4 million due to the pension benefit freeze for the Sidney group under the ACCO Brands Corporation Pension Plan.

We expect to contribute approximately $22.8 million to our defined benefit plans in 2021. For the nine months ended September 30, 2021, we have contributed $16.4 million to these plans.

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Stock-Based Compensation

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Stock-Based Compensation

7. Stock-Based Compensation

The following table summarizes our stock-based compensation expense (including stock options, restricted stock units ("RSUs") and performance stock units ("PSUs")) for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Stock option compensation expense	$	0.6	$	0.5	$	2.9	$	2.1
RSU compensation expense	0.9		1.3		4.3		4.3
PSU compensation expense	1.7		—		5.0		(1.2)
Total stock-based compensation expense	$	3.2	$	1.8	$	12.2	$	5.2

We generally recognize compensation expense for stock-based awards ratably over the vesting period. Stock-based compensation expense for the three and nine months ended September 30, 2021 includes $0.2 million and $0.4 million of expense related to stock awards granted to eligible non-employee directors, respectively. For each of the three and nine months ended September 30, 2020, stock-based compensation expense includes $1.0 million of expense related to stock awards granted to non-employee directors.

During the third quarter of 2021, stock compensation grants were made consisting of 4,773 stock options, 22,288 RSUs and 2,864 PSUs.

The following table summarizes our unrecognized compensation expense and the weighted-average period over which the expense will be recognized as of September 30, 2021:

	September 30, 2021
	Unrecognized	Weighted Average
	Compensation	Years Expense To Be
(in millions, except weighted average years)	Expense	Recognized Over
Stock options	$3.9	1.9
RSUs	$4.3	1.7
PSUs	$10.7	1.8

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Inventories

9 Months Ended

Sep. 30, 2021

Inventory Disclosure [Abstract]

Inventories

8. Inventories

The components of inventories were as follows:

(in millions)	September 30, 2021		December 31, 2020
Raw materials	$	44.7	$	36.8
Work in process	4.3		3.5
Finished goods	364.9		264.8
Total inventories	$	413.9	$	305.1

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Goodwill and Identifiable Intangible Assets

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Identifiable Intangible Assets

9. Goodwill and Identifiable Intangible Assets

Goodwill

We test goodwill for impairment at least annually and on an interim basis if an event or circumstance indicates that it is more likely than not that an impairment loss has been incurred. Historically, we performed this annual test using June 30th as the measurement date. During the second quarter of 2021, we elected to change the measurement date of our annual impairment test from June 30th to May 31st. A measurement date of May 31st is preferable as it better aligns with the timing of our forecasting process.

During the second quarter of 2021, we completed the annual goodwill impairment assessment, on a quantitative basis, for goodwill for each of our three reporting units. The result of our annual assessment was that the fair value of the North America, International and EMEA reporting units exceeded their carrying values as of our measurement date of May 31, 2021 and we concluded that no impairment existed.

Estimating the fair value of each reporting unit requires us to make assumptions and estimates regarding our future. We utilized a combination of both a discounted cash flows and market approach. The financial projections used in the valuation models reflected management's assumptions regarding revenue growth rates, economic and market trends, cost structure, and other expectations about the anticipated short-term and long-term operating results for each of our three reporting units.

In management’s opinion, the goodwill balance for the International reporting unit could be at risk for impairment if operating performance does not recover as expected from the current impacts of COVID-19, if we experience negative changes to the long-term outlook for the business, or changes in factors and assumptions which impact the fair value of the reporting unit such as low or declining revenue growth rates, depressed operating margins or adverse changes to the discount rates impacting this reporting unit.

Changes in the net carrying amount of goodwill by segment were as follows:

(in millions)	ACCO Brands North America		ACCO Brands EMEA		ACCO Brands International		Total
Balance at December 31, 2020	$	461.2	$	188.2	$	178.0	$	827.4
Acquisitions(1)	(14.5)		2.0		—		(12.5)
Foreign currency translation	—		(10.2)		(0.5)		(10.7)
Balance at September 30, 2021	$	446.7	$	180.0	$	177.5	$	804.2

(1)Goodwill has been recorded on our Consolidated Balance Sheet related to the Franken acquisition, which is part of our EMEA segment, and represents the excess of the cost of the Franken acquisition when compared to the fair value estimate of the net assets acquired on April 1, 2021 (the date of the Franken acquisition). Goodwill has been recorded on our Consolidated Balance Sheet related to the PowerA Acquisition and represents the excess of the cost of the PowerA Acquisition when compared to the fair value estimate of the net assets acquired on December 17, 2020 (the date of the PowerA Acquisition) and includes a working capital adjustment of $18.2 million recorded in the first quarter of 2021 as a reduction to the purchase price, partially offset by purchase accounting adjustments of $3.7 million. See "Note 3. Acquisitions" for details on the calculation of the goodwill acquired in the PowerA Acquisition.

The goodwill balance includes $215.1 million of accumulated impairment losses, which occurred prior to December 31, 2016.

Identifiable Intangible Assets

PowerA Acquisition

The valuation of identifiable intangible assets of $235.4 million acquired in the PowerA Acquisition includes amortizable customer relationships, vendor relationships, trade names and developed technology, which have been recorded at their estimated fair values. The fair value of the customer relationships was determined using the multi-period excess earnings method which is based on the present value of the projected after-tax cash flows. The fair value of the vendor relationships was determined using the lost income method. The fair value of the trade name and the developed technology was determined using the relief from royalty method, which is based on the present value of royalty fees derived from projected revenues. The determination of the acquisition date fair value of the intangible assets required the Company to make significant estimates and assumptions regarding future revenue growth rates, future cost of sales, operating expenses and earnings before income tax, attrition rate, future cash flows without vendor relationships and discount rates.

The amortizable trade name, customer and vendor relationships will be amortized over 15 years while the developed technology will be amortized over 5 years on a straight-line basis. The allocation of the identifiable intangibles acquired in the PowerA Acquisition was as follows:

(in millions)	Fair Value		Remaining Useful Life
Trade name	$	21.6	15 years
Customer relationships	128.6		15 years
Vendor relationships	82.4		15 years
Developed technology	2.8		5 years
Total identifiable intangibles acquired	$	235.4

Intangible Assets

The gross carrying value and accumulated amortization by class of identifiable intangible assets as of September 30, 2021 and December 31, 2020, were as follows:

	September 30, 2021							December 31, 2020
(in millions)	Gross Carrying Amounts		Accumulated Amortization			Net Book Value		Gross Carrying Amounts		Accumulated Amortization			Net Book Value
Indefinite-lived intangible assets:
Trade names	$	420.5	$	(44.5)	(1)	$	376.0	$	467.5	$	(44.5)	(1)	$	423.0
Amortizable intangible assets:
Trade names	375.7		(107.2)			268.5		343.5		(97.7)			245.8
Customer and contractual relationships	368.7		(177.4)			191.3		376.8		(162.9)			213.9
Vendor relationships	82.4		(4.6)			77.8		87.7		(0.2)			87.5
Patents	8.6		(2.8)			5.8		8.9		(2.1)			6.8
Subtotal	835.4		(292.0)			543.4		816.9		(262.9)			554.0
Total identifiable intangibles	$	1,255.9	$	(336.5)		$	919.4	$	1,284.4	$	(307.4)		$	977.0

(1)Accumulated amortization prior to the adoption of authoritative guidance on goodwill and other intangible assets, at which time further amortization ceased.

The Company's intangible amortization expense for the three and nine months ended September 30, 2021 was $11.6 million and $35.2 million, respectively, and $7.9 million and $24.1 million for the three and nine months ended September 30, 2020, respectively.

Estimated amortization expense for amortizable intangible assets, as of September 30, 2021, for the current year and the next five years is as follows:

(in millions)	2021		2022		2023		2024		2025		2026
Estimated amortization expense(2)	$	47.1	$	43.9	$	41.5	$	39.8	$	38.1	$	35.8

(2)    Actual amounts of amortization expense may differ from estimated amounts due to changes in foreign currency exchange rates, additional intangible asset acquisitions, impairment of intangible assets, accelerated amortization of intangible assets and other events.

We test indefinite-lived intangibles for impairment at least annually and on an interim basis if an event or circumstance indicates that it is more likely than not that an impairment loss has been incurred. We performed this annual assessment, on a quantitative basis, for our indefinite-lived trade names and concluded that no impairment existed as of our measurement date of May 31, 2021.

The result of our impairment testing of our indefinite-lived intangible assets determined the fair value of our five indefinite-lived trade names ACCO Brands®, Five Star®, Swingline®, Leitz® and Tilibra® exceeded their carrying values. The fair value of these trade names are considered Level 3 measurements which utilize a relief-from-royalty discounted cash flows approach. Key inputs and assumptions involved include the estimated near-term revenue growth, long-term growth rate, royalty rate, and discount rate.

As of May 31, 2021, we changed the indefinite-lived Tilibra® trade name to an amortizable intangible asset. The change was made as a result of decisions regarding the Company's future use of the trade name. The Company began amortizing the Tilibra® trade name on a straight-line basis over a life of 30 years effective June 1, 2021.

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Restructuring

9 Months Ended

Sep. 30, 2021

Restructuring and Related Activities [Abstract]

Restructuring

10. Restructuring

The Company recorded $4.2 million and $7.3 million of restructuring expense for the nine months ended September 30, 2021 and 2020, respectively, and recorded $0.3 million and $0.5 million for the three months ended September 30, 2021 and 2020, respectively. The restructuring expenses were primarily for severance costs and termination of lease agreements related to cost reduction initiatives in our North America and International segments.

The summary of the activity in the restructuring liability for the nine months ended September 30, 2021, was as follows:

(in millions)	Balance at December 31, 2020		Provision		Cash Expenditures		Non-cash Items/ Currency Change		Balance at September 30, 2021
Employee termination costs(1)	$	8.1	$	3.8	$	(8.0)	$	(0.1)	$	3.8
Termination of lease agreements(2)	1.0		0.3		(0.9)		0.6		1.0
Other	0.2		0.1		(0.2)		(0.1)		—
Total restructuring liability	$	9.3	$	4.2	$	(9.1)	$	0.4	$	4.8

(1) We expect the remaining $3.8 million employee termination costs to be substantially paid in the next nine months.

(2) We expect the remaining $1.0 million lease termination costs to be substantially paid in the next nine months.

The summary of the activity in the restructuring liability for the nine months ended September 30, 2020, was as follows:

(in millions)	Balance at December 31, 2019		Provision		Cash Expenditures		Non-cash Items/ Currency Change		Balance at September 30, 2020
Employee termination costs	$	10.7	$	6.7	$	(8.4)	$	(0.1)	$	8.9
Termination of lease agreements	0.6		0.1		(0.5)		—		0.2
Other	0.5		0.5		(0.5)		(0.4)		0.1
Total restructuring liability	$	11.8	$	7.3	$	(9.4)	$	(0.5)	$	9.2

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Income Taxes

9 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

11. Income Taxes

For the three months ended September 30, 2021, we recorded an income tax expense of $10.0 million on income before taxes of $30.2 million, for an effective rate of 33.1 percent. For the three months ended September 30, 2020, we recorded an income tax expense of $6.8 million on income before taxes of $25.6 million, for an effective rate of 26.6 percent. The increase in the effective rate versus the three months ended September 30, 2020 was primarily driven by an increase in the global intangible low-taxed income tax.

For the nine months ended September 30, 2021, we recorded an income tax expense of $5.8 million on income before taxes of $54.2 million, for an effective rate of 10.7 percent. For the nine months ended September 30, 2020, we recorded an income tax expense of $13.7 million on income before taxes of $45.9 million, for an effective rate of 29.8 percent. The decrease in the effective rate versus the nine months ended September 30, 2020 was primarily driven by the revaluation of the deferred tax assets due to enacted statutory tax rate changes and the release of non-U.S. reserves for unrecognized tax benefits for which the time to assess has lapsed.

The U.S. federal statute of limitations remains open for the years 2017 and forward. Foreign and U.S. state jurisdictions have statutes of limitations generally ranging from 2 to 5 years. Years still open to examination by foreign tax authorities in major jurisdictions include Australia (2017 forward), Brazil (2015 forward), Canada (2017 forward), Germany (2016 forward), Sweden (2016 forward) and the U.K. (2019 forward). We are currently under examination in certain foreign jurisdictions.

Brazil Tax Assessments

In connection with our May 1, 2012, acquisition of the Mead Consumer and Office Products business ("Mead C&OP"), we assumed all of the tax liabilities for the acquired foreign operations including Tilibra Produtos de Papelaria Ltda. ("Tilibra"). In December of 2012, the Federal Revenue Department of the Ministry of Finance of Brazil ("FRD") issued a tax assessment against Tilibra, challenging the tax deduction of goodwill from Tilibra's taxable income for the year 2007 (the "First Assessment"). A second assessment challenging the deduction of goodwill from Tilibra's taxable income for the years 2008, 2009 and 2010 was issued by FRD in October 2013 (the "Second Assessment" and together with the First Assessment, the "Brazil Tax Assessments"). Tilibra is disputing both of the Brazil Tax Assessments.

The final administrative appeal of the Second Assessment was decided against the Company in 2017. In 2018, we appealed this decision to the judicial level. In the event we do not prevail at the judicial level, we will be required to pay an additional penalty representing attorneys' costs and fees; accordingly, in the first quarter of 2019, the Company recorded an additional reserve in the amount of $5.6 million. In connection with the judicial challenge, we were required to provide security to guarantee payment of the Second Assessment should we not prevail.

In the third quarter of 2020, the final administrative appeal of the First Assessment was decided against the Company. We decided to challenge this adverse decision in the tax authority's lawsuit at the judicial level seeking to collect the tax when the collection action is filed. We recorded an additional expense in the third quarter of 2020 of $1.2 million representing additional attorneys' costs and fees, which we will be required to pay if we do not prevail at the judicial level. In anticipation of the judicial challenge, we were required to provide security to guarantee payment of the First Assessment should we not prevail.

We believe we have meritorious defenses and intend to vigorously contest both of the Brazil Tax Assessments; however, there can be no assurances that we will ultimately prevail. The ultimate outcome will not be determined until the Brazilian judicial process is complete, which is expected to take a number of years. If the FRD's initial position is ultimately sustained, payment of the amount assessed would materially and adversely affect our cash flow in the year of settlement.

Because there is no settled legal precedent on which to base a definitive opinion as to whether we will ultimately prevail, we consider the outcome of these disputes to be uncertain. Since it is not more likely than not that we will prevail, in 2012, we recorded a reserve in the amount of $44.5 million (at December 31, 2012 exchange rates) in consideration of this contingency, of which $43.3 million was recorded as an adjustment to the purchase price and which included the 2007-2012 tax years plus penalties and interest through December 2012. Included in this reserve is an assumption of penalties at 75 percent, which is the standard penalty. While there is a possibility that a penalty of 150 percent could be imposed in connection with the First Assessment, based on the facts in our case and existing precedent, we believe the likelihood of a 150 percent penalty is not more likely than not as of September 30, 2021. We will continue to actively monitor administrative and judicial court decisions and evaluate their impact, if any, on our legal assessment of the ultimate outcome of our disputes. In addition, we will continue

to accrue interest related to this contingency until such time as the outcome is known or until evidence is presented that we are more likely than not to prevail. The time limit for issuing an assessment for 2011 and 2012 expired in January 2018 and January 2019, respectively. Since we did not receive an assessment for either of these periods, we reversed the amounts previously accrued for them. During the nine months ended September 30, 2021 and 2020, we accrued additional interest as a charge to current income tax expense of $0.3 million and $0.3 million, respectively. At current exchange rates, our accrual through September 30, 2021, including tax, penalties and interest is $27.3 million (reported in "Other non-current liabilities").

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Earnings per Share

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Earnings per Share

12. Earnings per Share

Total outstanding shares as of September 30, 2021 and 2020, were 95.7 million and 94.5 million, respectively. Under our stock repurchase program, for the three and nine months ended September 30, 2021 and for the three months ended September 30, 2020, no shares were repurchased, and for the nine months ended September 30, 2020, we repurchased and retired 2.7 million shares. For the nine months ended September 30, 2021 and 2020, we acquired 0.1 million and 0.2 million shares, respectively, related to tax withholding for share-based compensation.

The calculation of basic earnings per share of common stock is based on the weighted-average number of shares of common stock outstanding in the year, or period, over which they were outstanding. Our calculation of diluted earnings per share of common stock assumes that any shares of common stock outstanding were increased by shares that would be issued upon exercise of those stock awards for which the average market price for the period exceeds the exercise price less the shares that could have been purchased by the Company with the related proceeds, including compensation expense measured but not yet recognized.

The number of our weighted-average shares outstanding for the three and nine months ended September 30, 2021 and 2020 was as follows:

	Three Months Ended September 30,		Nine Months Ended September 30,
(in millions)	2021	2020	2021	2020
Weighted-average number of shares of common stock outstanding - basic	95.6	94.5	95.4	95.0
Stock options	0.2	—	0.1	0.1
Restricted stock units	1.5	1.1	1.5	1.1
Weighted-average shares and assumed conversions - diluted	97.3	95.6	97.0	96.2

Awards of potentially dilutive shares of common stock, which have exercise prices that were higher than the average market price during the period, are not included in the computation of dilutive earnings per share as their effect would have been anti-dilutive. For each of the three and nine months ended September 30, 2021, the number of anti-dilutive shares was approximately 8.0 million. For the three and nine months ended September 30, 2020, the number of anti-dilutive shares was approximately 8.0 million and 7.5 million, respectively

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Derivative Financial Instruments

9 Months Ended

Sep. 30, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

13. Derivative Financial Instruments

We are exposed to various market risks, including changes in foreign currency exchange rates and interest rate changes. We enter into financial instruments to manage and reduce the impact of these risks, not for trading or speculative purposes. The counterparties to these financial instruments are major financial institutions. We continually monitor our foreign currency exposures in order to maximize the overall effectiveness of our foreign currency hedge positions. Principal currencies hedged against the U.S. dollar include the Euro, Australian dollar, Canadian dollar, Swedish krona, British pound and Japanese yen. We are subject to credit risk, which relates to the ability of counterparties to meet their contractual payment obligations or the potential non-performance by counterparties to financial instrument contracts. Management continues to monitor the status of our counterparties and will take action, as appropriate, to further manage our counterparty credit risk. There are no credit contingency features in our derivative financial instruments.

When hedge accounting is applicable, on the date we enter into a derivative, the derivative is designated as a hedge of the identified exposure. We measure the effectiveness of our hedging relationships both at hedge inception and on an ongoing basis.

Forward Currency Contracts

We enter into forward foreign currency contracts with third parties to reduce the effect of fluctuating foreign currencies, primarily on foreign denominated inventory purchases and intercompany loans. The majority of the Company’s exposure to local currency movements is in Europe (the Euro, the Swedish krona and the British pound), Brazil, Australia, Canada, and Mexico.

Forward currency contracts are used to hedge foreign denominated inventory purchases for Europe, Australia, Canada, Japan and New Zealand, and are designated as cash flow hedges. Unrealized gains and losses on these contracts are deferred in Accumulated Other Comprehensive Income ("AOCI") until the contracts are settled and the underlying hedged transactions relating to inventory purchases are recognized, at which time the deferred gains or losses will be reported in the "Cost of products sold" line in the "Consolidated Statements of Income." As of September 30, 2021 and December 31, 2020, we had cash flow foreign exchange contracts outstanding with a U.S. dollar equivalent notional value of $133.8 million and $134.3 million, respectively, which were designated as hedges.

Forward currency contracts used to hedge foreign denominated intercompany loans are not designated as hedging instruments. Gains and losses on these derivative instruments are recognized within "Other expense, net" in the "Consolidated Statements of Income" and are largely offset by the change in the current translated value of the hedged item. The periods of the forward foreign exchange contracts correspond to the periods of the hedged transactions, with some relating to intercompany loans which extend beyond September 2022. As of September 30, 2021 and December 31, 2020, we had foreign exchange contracts outstanding with a U.S. dollar equivalent notional value of $93.1 million and $164.7 million, respectively, which were not designated as hedges.

The following table summarizes the fair value of our derivative financial instruments as of September 30, 2021 and December 31, 2020:

	Fair Value of Derivative Instruments
	Derivative Assets					Derivative Liabilities
(in millions)	Balance Sheet Location	September 30, 2021		December 31, 2020		Balance Sheet Location	September 30, 2021		December 31, 2020
Derivatives designated as hedging instruments:
Foreign exchange contracts	Other current assets	$	5.1	$	0.1	Other current liabilities	$	0.1	$	5.0
Derivatives not designated as hedging instruments:
Foreign exchange contracts	Other current assets	0.4		1.6		Other current liabilities	0.7		1.2
Foreign exchange contracts	Other non-current assets	16.3		32.1		Other non-current liabilities	16.3		32.1
Total derivatives		$	21.8	$	33.8		$	17.1	$	38.3

The following tables summarize the pre-tax effect of our derivative financial instruments on the condensed consolidated financial statements for the three and nine months ended September 30, 2021 and 2020:

	The Effect of Derivative Instruments in Cash Flow Hedging Relationships on the Consolidated Financial Statements
	Amount of Gain (Loss) Recognized in AOCI (Effective Portion)				Location of (Gain) Loss Reclassified from AOCI to Income	Amount of (Gain) Loss Reclassified from AOCI to Income (Effective Portion)
	Three Months Ended September 30,					Three Months Ended September 30,
(in millions)	2021		2020			2021		2020
Cash flow hedges:
Foreign exchange contracts	$	3.9	$	(2.1)	Cost of products sold	$	(0.5)	$	1.3
	The Effect of Derivative Instruments in Cash Flow Hedging Relationships on the Consolidated Financial Statements
	Amount of Gain (Loss) Recognized in AOCI (Effective Portion)				Location of (Gain) Loss Reclassified from AOCI to Income	Amount of (Gain) Loss Reclassified from AOCI to Income (Effective Portion)
	Nine Months Ended September 30,					Nine Months Ended September 30,
(in millions)	2021		2020			2021		2020
Cash flow hedges:
Foreign exchange contracts	$	7.3	$	0.3	Cost of products sold	$	2.3	$	(1.2)

	The Effect of Derivatives Not Designated as Hedging Instruments on the Consolidated Statements of Operations
	Location of (Gain) Loss Recognized in Income on Derivatives	Amount of (Gain) Loss Recognized in Income				Amount of (Gain) Loss Recognized in Income
		Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)		2021		2020		2021		2020
Foreign exchange contracts	Other expense, net	$	0.3	$	2.8	$	0.3	$	(2.4)

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Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

14. Fair Value of Financial Instruments

In establishing a fair value, there is a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The basis of the fair value measurement is categorized in three levels, in order of priority, as described below:

Level 1	Unadjusted quoted prices in active markets for identical assets or liabilities
Level 2	Unadjusted quoted prices in active markets for similar assets or liabilities, or
	Unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or
	Inputs other than quoted prices that are observable for the asset or liability
Level 3	Unobservable inputs for the asset or liability

We utilize the best available information in measuring fair value. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

We have determined that our financial assets and liabilities described in "Note 13. Derivative Financial Instruments" are Level 2 in the fair value hierarchy. The following table sets forth our financial assets and liabilities that were accounted for at fair value on a recurring basis as of September 30, 2021 and December 31, 2020:

(in millions)	September 30, 2021		December 31, 2020
Assets:
Forward currency contracts	$	21.8	$	33.8
Liabilities:
Forward currency contracts	$	17.1	$	38.3

Our forward currency contracts are included in "Other current assets," "Other current liabilities," "Other non-current assets," or "Other non-current liabilities." The forward foreign currency exchange contracts are primarily valued based on the foreign currency spot and forward rates quoted by banks or foreign currency dealers. As such, these derivative instruments are classified within Level 2.

The fair values of cash and cash equivalents, notes payable to banks, accounts receivable and accounts payable approximate carrying amounts due principally to their short maturities. The carrying amount of total debt was $1,130.1 million and $1,136.6 million and the estimated fair value of total debt was $1,173.2 million and $1,146.9 million at September 30, 2021 and December 31, 2020, respectively. The fair values are determined from quoted market prices, where available, and from investment bankers using current interest rates considering credit ratings and the remaining time to maturity.

Contingent consideration: The PowerA Acquisition included an additional earnout of up to $55.0 million in cash, contingent upon PowerA achieving one- and two- year sales and profit growth objectives. Liabilities for contingent consideration are measured at fair value each reporting period, with the acquisition-date fair value included as part of the consideration transferred in the related business combination and subsequent changes in fair value recorded in operating income on the condensed consolidated statements of income.

We use a Monte Carlo simulation model for contingent earnout payments, which are then discounted to present value. We classify the contingent consideration liabilities as Level 3 due to the lack of relevant observable market data over fair value inputs such as probability-weighting of payment outcomes. There have been no transfers of assets or liabilities into or out of Level 3 of the fair value hierarchy.

The following table provides a reconciliation of the beginning and ending balance of the contingent consideration for the nine months ended September 30, 2021:

(in millions)	Contingent Consideration
Balance at December 31, 2020	$	18.2
Change in fair value	16.5
Balance at September 30, 2021	$	34.7

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Accumulated Other Comprehensive Income (Loss)

9 Months Ended

Sep. 30, 2021

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

15. Accumulated Other Comprehensive Income (Loss)

AOCI is defined as net income (loss) and other changes in stockholders’ equity from transactions and other events from sources other than stockholders. The components of, and changes in, AOCI were as follows:

(in millions)	Derivative Financial Instruments		Foreign Currency Adjustments		Unrecognized Pension and Other Post-retirement Benefit Costs		Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2020	$	(3.1)	$	(318.8)	$	(242.3)	$	(564.2)
Other comprehensive income (loss) before reclassifications, net of tax	5.0		(18.6)		3.6		(10.0)
Amounts reclassified from accumulated other comprehensive income, net of tax	1.7		—		7.1		8.8
Balance at September 30, 2021	$	3.6	$	(337.4)	$	(231.6)	$	(565.4)

The reclassifications out of AOCI for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
(in millions)	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)				Amount Reclassified from Accumulated Other Comprehensive Income (Loss)				Location on Income Statement
Details about Accumulated Other Comprehensive Income (Loss) Components
Gain (loss) on cash flow hedges:
Foreign exchange contracts	$	0.5	$	(1.3)	$	(2.3)	$	1.2	Cost of products sold
Tax (expense) benefit	(0.2)		0.5		0.6		(0.3)		Income tax expense
Net of tax	$	0.3	$	(0.8)	$	(1.7)	$	0.9
Defined benefit plan items:
Amortization of actuarial loss	$	(2.5)	$	(2.0)	$	(7.7)	$	(5.7)	(1)
Amortization of prior service cost	(0.1)		(0.2)		(1.7)		(0.5)		(1)
Total before tax	(2.6)		(2.2)		(9.4)		(6.2)
Tax benefit	0.7		0.6		2.3		1.3		Income tax expense
Net of tax	$	(1.9)	$	(1.6)	$	(7.1)	$	(4.9)
Total reclassifications for the period, net of tax	$	(1.6)	$	(2.4)	$	(8.8)	$	(4.0)

(1)     These AOCI components are included in the computation of net periodic benefit cost for pension and post-retirement plans. See "Note 6. Pension and Other Retiree Benefits" for additional details.

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Revenue Recognition

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue Recognition

16. Revenue Recognition

Revenue is recognized when control of the promised goods or services is transferred to our customers in an amount reflective of the consideration we expect to receive in exchange for those goods or services. Taxes we collect concurrent with revenue producing activities are excluded from revenue. Incidental items incurred that are immaterial in the context of the contract are expensed.

At the inception of each contract, the Company assesses the products and services promised and identifies each distinct performance obligation. To identify the performance obligations, the Company considers all products and services promised regardless of whether they are explicitly stated or implied within the contract or by standard business practices.

Freight and distribution activities performed before the customer obtains control of the goods are not considered promised services under customer contracts and therefore are not distinct performance obligations. The Company has chosen to account for shipping and handling activities as a fulfillment activity, and therefore accrues the expense of freight and distribution in "Cost of products sold" when products are shipped.

Service or Extended Maintenance Agreements ("EMAs"). As of December 31, 2020, there was $3.0 million of unearned revenue associated with outstanding EMAs, primarily reported in "Other current liabilities." During the three and nine months ended September 30, 2021, $0.4 million and $2.1 million of the unearned revenue was earned and recognized, respectively. As of September 30, 2021, the amount of unearned revenue from EMAs was $2.5 million. We expect to earn and recognize approximately $2.1 million of the unearned amount in the next 12 months and $0.4 million in periods beyond the next 12 months.

The following tables present our net sales disaggregated by regional geography(1), by reporting business segments and our net sales disaggregated by the timing of revenue recognition for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
United States	$	253.9	$	203.5	$	685.5	$	562.5
Canada	33.6		35.0		85.9		75.5
ACCO Brands North America	287.5		238.5		771.4		638.0
ACCO Brands EMEA(2)	161.1		136.4		475.0		352.2
Australia/N.Z.	35.3		31.7		96.8		83.6
Latin America	30.8		27.5		72.2		90.8
Asia-Pacific	12.0		10.0		39.6		30.5
ACCO Brands International	78.1		69.2		208.6		204.9
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

(1) Net sales are attributed to geographic areas based on the location of the selling subsidiaries.

(2) ACCO Brands EMEA is comprised largely of Europe, but also includes export sales to the Middle East and Africa.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Product and services transferred at a point in time	$	515.4	$	431.1	$	1,416.0	$	1,148.5
Product and services transferred over time	11.3		13.0		39.0		46.6
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

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Information on Business Segments

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Information on Business Segments

17. Information on Business Segments

The Company has three operating business segments, each of which is comprised of different geographic regions. The Company's three segments are as follows:

Operating Segment	Geography	Primary Brands	Primary Products
ACCO Brands North America	United States and Canada	PowerA®, Five Star®, Kensington®, AT-A-GLANCE®, Quartet®, Swingline®, GBC®, Mead®, Hilroy®	Gaming and computer accessories, school products, planners, storage and organization (3-ring binders), dry erase boards, laminating, binding, stapling and punching products
ACCO Brands EMEA	Europe, Middle East and Africa	Leitz®, Rapid®, Esselte®, Kensington®, Rexel® GBC®, PowerA®, NOBO®, Derwent®	Storage and organization products (lever-arch binders, sheet protectors, indexes), computer and gaming accessories, laminating, shredding, stapling, punching, do-it-yourself tools, dry erase boards and writing instruments
ACCO Brands International	Australia/N.Z., Latin America and Asia-Pacific	Tilibra®, Foroni®, GBC®, Barrilito®, Marbig®, Kensington®, Artline®*, PowerA®, Spirax®, Quartet®, Wilson Jones®, Rexel® *Australia/N.Z. only	School notebooks, laminating, shredding, storage and organization products (binders, sheet protectors and indexes), writing and arts products, janitorial supplies, dry erase boards, and stapling and punching products

Customers

We distribute our products through a wide variety of retail and commercial channels to ensure that our products are readily and conveniently available for purchase by consumers and other end-users, wherever they prefer to shop. These channels include mass retailers, e-tailers, discount, drug/grocery and variety chains, warehouse clubs, hardware and specialty stores, independent office product dealers, office superstores, wholesalers, contract stationers, and specialist technology businesses. We also sell directly to commercial and consumer end-users through e-commerce sites and our direct sales organization.

Net sales by reportable business segment for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
ACCO Brands North America	$	287.5	$	238.5	$	771.4	$	638.0
ACCO Brands EMEA	161.1		136.4		475.0		352.2
ACCO Brands International	78.1		69.2		208.6		204.9
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

Operating income by business segment for the three and nine months ended September 30, 2021 and 2020 was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
ACCO Brands North America	$	34.6	$	22.9	$	87.7	$	67.9
ACCO Brands EMEA	13.4		16.7		40.1		26.9
ACCO Brands International	7.3		3.7		10.7		5.2
Segment operating income	55.3		43.3		138.5		100.0
Change in fair value of contingent consideration	(4.9)		—		(16.5)		—
Corporate	(11.8)		(9.0)		(34.6)		(29.8)
Operating income(1)	38.6		34.3		87.4		70.2
Interest expense	11.2		10.2		36.0		28.7
Interest income	(0.6)		(0.2)		(1.2)		(0.8)
Non-operating pension income	(2.3)		(1.4)		(5.6)		(4.4)
Other expense, net	0.1		0.1		4.0		0.8
Income before income tax	$	30.2	$	25.6	$	54.2	$	45.9

(1)Operating income is defined as i) net sales; ii) less cost of products sold; iii) less selling, general and administrative expenses; iv) less amortization of intangibles; v) less restructuring charges; and vi) less change in the fair value of contingent consideration.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

18. Commitments and Contingencies

Pending Litigation - Brazil Tax Assessments

In connection with our May 1, 2012, acquisition of the Mead C&OP business, we assumed all of the tax liabilities for the acquired foreign operations including Tilibra. For further information, see "Note 11. Income Taxes - Brazil Tax Assessments" for details on tax assessments issued by the FRD against Tilibra challenging the tax deduction of goodwill from Tilibra's taxable income for the years 2007 through 2010. If the FRD's initial position is ultimately sustained, payment of the amount assessed would materially and adversely affect our cash flow in the year of settlement.

Brazil Tax Credits

In May 2021, the Supreme Court of Brazil issued its final ruling in a leading case related to the computation of certain indirect taxes which provides that the indirect tax base should not include the gross amount of the value-added tax known as “ICMS.” The Supreme Court further ruled that taxpayers can recognize future operating credits ("Tax Credits") for excess indirect tax payments from past periods due to the inclusion of ICMS in the indirect tax base to the extent the taxpayer had filed judicial challenges seeking to recover excess tax payments prior to March 15, 2017 and for any excess tax payments made after March 15, 2017.

Tilibra, one of our Brazilian subsidiaries, filed legal actions requesting recovery of these excess tax payments by way of future Tax Credits covering various time periods prior to March 15, 2017. Some of these cases have been finally decided in a court of law in favor of Tilibra, while others are still pending a final decision which we expect to issue in the future based on the Supreme Court decision.

In the second quarter, the Company recorded Tax Credits in the amount of $9.1 million with respect to the finally decided cases as Other income, net. In addition, the recording of the Tax Credits resulted in additional income tax expense of $3.1 million.

Final decisions in the remaining legal actions Tilibra has filed will result in additional Tax Credits, and the amount of these Tax Credits, in the aggregate, may be material.

Other Pending Litigation

We are party to various lawsuits and regulatory proceedings, primarily related to alleged patent infringement, as well as other claims incidental to our business. In addition, we may be unaware of third-party claims of intellectual property infringement relating to our technology, brands, or products, and we may face other claims related to business operations. Any litigation regarding patents or other intellectual property could be costly and time-consuming and might require us to pay monetary damages or enter into costly license agreements. We also may be subject to injunctions against development and sale of certain of our products.

It is the opinion of management that (other than the Brazil Tax Assessments) the ultimate resolution of currently outstanding matters will not have a material adverse effect on our financial condition, results of operations or cash flow. However, there is no assurance that we will ultimately be successful in our defense of any of these matters or that an adverse outcome in any matter will not affect our results of operations, financial condition or cash flow. Further, future claims, lawsuits and legal proceedings could materially and adversely affect our business, reputation, results of operations and financial condition.

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Acquisitions (Tables)

9 Months Ended

Sep. 30, 2021

Business Combinations [Abstract]

Purchase Price Allocation to the Fair Value of Assets Acquired and Liabilities Assumed

The following table presents the allocation of the consideration given to the fair values of the assets acquired and liabilities assumed at the date of the PowerA Acquisition:

(in millions)	At December 17, 2020
Calculation of Goodwill:
Purchase price, net of working capital adjustment	$	321.8
Fair value of contingent consideration	$	18.2
Plus fair value of liabilities assumed:
Accrued liabilities	9.2
Fair value of liabilities assumed	$	9.2
Less fair value of assets acquired:
Inventory	29.3
Property and equipment	0.2
Identifiable intangibles	235.4
Other assets	13.2
Fair value of assets acquired	$	278.1
Goodwill	$	71.1

Business Acquisition, Pro Forma Information

Had the PowerA Acquisition occurred on January 1, 2019, unaudited pro forma consolidated results of the Company for the three and nine months ended September 30, 2021 and 2020 would have been as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Net sales	$	526.7	$	501.4	$	1,455.0	$	1,325.5
Net income	20.2		24.9		48.4		41.6
Net income per diluted common share	$	0.21	$	0.26	$	0.50	$	0.43

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Long-Term Debt and Short-Term Borrowings (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Notes Payable and Long-Term Debt

Notes payable and long-term debt, listed in order of the priority of security interests in assets of the Company, consisted of the following as of September 30, 2021 and December 31, 2020:

(in millions)	September 30, 2021		December 31, 2020
Euro Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.25% at September 30, 2021)	$	264.3	$	—
Euro Senior Secured Term Loan A, due May 2024 (floating interest rate of 2.50% at December 31, 2020)	—		287.4
USD Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.38% at September 30, 2021)	90.2		—
USD Senior Secured Term Loan A, due May 2024 (floating interest rate of 3.50% at December 31, 2020)	—		92.5
Australian Dollar Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.32% at September 30, 2021)	39.5		—
Australian Dollar Senior Secured Term Loan A, due May 2024 (floating interest rate of 2.57% at December 31, 2020)	—		43.4
U.S. Dollar Senior Secured Revolving Credit Facility, due March 2026 (floating interest rate of 2.33% at September 30, 2021)	120.4		—
U.S. Dollar Senior Secured Revolving Credit Facility, due May 2024 (floating interest rate of 3.50% at December 31, 2020)	—		307.2
Australian Dollar Senior Secured Revolving Credit Facility, due March 2026 (floating interest rate of 2.31% at September 30, 2021)	32.6		—
Australian Dollar Senior Secured Revolving Credit Facility, due May 2024 (floating interest rate of 2.57% at December 31, 2020)	—		25.4
Senior Unsecured Notes, due March 2029 (fixed interest rate of 4.25%)	575.0		—
Senior Unsecured Notes, due December 2024 (fixed interest rate of 5.25%)	—		375.0
Other borrowings	8.1		5.7
Total debt	1,130.1		1,136.6
Less:
Current portion	36.2		76.5
Debt issuance costs, unamortized	10.0		5.5
Long-term debt, net	$	1,083.9	$	1,054.6

Schedule of Maximum Consolidated Leverage Ratio

further amend the maximum Consolidated Leverage Ratio financial covenant for each of the six fiscal quarters beginning March 31, 2021 and ending June 30, 2022, as follows:

Quarter Ended	Maximum Consolidated Leverage Ratio
March 2021	5.25:1.00
June 2021	5.25:1.00
September 2021	4.75:1.00
December 2021	4.25:1.00
March 2022	4.25:1.00
June 2022	4.25:1.00
September 2022 and thereafter	3.75:1.00

Schedule of Consolidated Leverage Ratio under Amended Credit Agreement

reflect more favorable pricing at higher Consolidated Leverage Ratio levels along with lower fees on undrawn amounts, as follows:

Consolidated Leverage Ratio	Applicable Rate on Euro/AUD/CDN Dollar Loans	Applicable Rate on Base Rate Loans	Undrawn Fee
> 4.50 to 1.00	2.50%	1.50%	0.500%
≤ 4.50 to 1.00 and > 4.00 to 1.00	2.25%	1.25%	0.375%
≤ 4.00 to 1.00 and > 3.50 to 1.00	2.00%	1.00%	0.350%
≤ 3.50 to 1.00 and > 3.00 to 1.00	1.75%	0.75%	0.300%
≤ 3.00 to 1.00 and > 2.00 to 1.00	1.50%	0.50%	0.250%
≤ 2.00 to 1.00	1.25%	0.25%	0.200%

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Leases (Tables)

9 Months Ended

Sep. 30, 2021

Leases [Abstract]

Components of Lease Expense and Other Information

The components of lease expense were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Operating lease cost	$	8.1	$	6.7	$	22.3	$	21.0
Sublease income	(0.9)		(0.2)		(1.5)		(0.9)
Total lease cost	$	7.2	$	6.5	$	20.8	$	20.1

Other information related to leases was as follows:

	Nine Months Ended September 30,
(in millions, except lease term and discount rate)	2021			2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	23.8		$	21.5
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	15.0			3.3
	As of
	September 30, 2021
Weighted average remaining lease term:
Operating leases	6.15 years
Weighted average discount rate:
Operating leases	5.1		%

Future Minimum Lease Payments

Future minimum lease payments, net of sub-lease income, for all non-cancelable leases as of September 30, 2021, were as follows:

(in millions)
2021	$	6.9
2022	24.1
2023	18.3
2024	14.8
2025	12.0
2026	9.4
Thereafter	24.2
Total minimum lease payments	109.7
Less imputed interest	17.4
Future minimum payments for leases, net of sublease rental income and imputed interest	$	92.3

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Pension and Other Retiree Benefits (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost for Pension and Post-Retirement Plans

The components of net periodic benefit (income) cost for pension and post-retirement plans for the three and nine months ended September 30, 2021 and 2020 were as follows: 

	Three Months Ended September 30,
	Pension								Post-retirement
	U.S.				International
(in millions)	2021		2020		2021		2020		2021		2020
Service cost	$	—	$	0.4	$	0.4	$	0.4	$	—	$	—
Interest cost	1.2		1.5		1.5		2.4		—		—
Expected return on plan assets	(2.9)		(2.8)		(4.7)		(4.7)		—		—
Amortization of net loss (gain)	0.9		0.8		1.7		1.3		(0.1)		(0.1)
Amortization of prior service cost	—		0.1		0.1		0.1		—		—
Net periodic benefit cost (income) (1)	$	(0.8)	$	—	$	(1.0)	$	(0.5)	$	(0.1)	$	(0.1)
	Nine Months Ended September 30,
	Pension								Post-retirement
	U.S.				International
(in millions)	2021		2020		2021		2020		2021		2020
Service cost	$	0.5	$	1.2	$	1.2	$	1.1	$	—	$	—
Interest cost	3.4		4.4		4.7		7.2		—		0.1
Expected return on plan assets	(8.5)		(8.5)		(14.5)		(13.8)		—		—
Amortization of net loss (gain)	2.7		2.4		5.3		3.7		(0.3)		(0.4)
Amortization of prior service cost	0.1		0.3		0.2		0.2		—		—
Curtailment loss(2)	1.4		—		—		—		—		—
Net periodic benefit cost (income) (1)	$	(0.4)	$	(0.2)	$	(3.1)	$	(1.6)	$	(0.3)	$	(0.3)

(1)The components of net periodic benefit cost (income), other than service cost, are included in the line "Non-operating pension income" in the Consolidated Statements of Income.

(2)Curtailment loss of $1.4 million due to the pension benefit freeze for the Sidney group under the ACCO Brands Corporation Pension Plan.

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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

The following table summarizes our stock-based compensation expense (including stock options, restricted stock units ("RSUs") and performance stock units ("PSUs")) for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Stock option compensation expense	$	0.6	$	0.5	$	2.9	$	2.1
RSU compensation expense	0.9		1.3		4.3		4.3
PSU compensation expense	1.7		—		5.0		(1.2)
Total stock-based compensation expense	$	3.2	$	1.8	$	12.2	$	5.2

Schedule of Unrecognized Compensation Cost, Nonvested Awards

The following table summarizes our unrecognized compensation expense and the weighted-average period over which the expense will be recognized as of September 30, 2021:

	September 30, 2021
	Unrecognized	Weighted Average
	Compensation	Years Expense To Be
(in millions, except weighted average years)	Expense	Recognized Over
Stock options	$3.9	1.9
RSUs	$4.3	1.7
PSUs	$10.7	1.8

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Inventories (Tables)

9 Months Ended

Sep. 30, 2021

Inventory Disclosure [Abstract]

Components of Inventory

The components of inventories were as follows:

(in millions)	September 30, 2021		December 31, 2020
Raw materials	$	44.7	$	36.8
Work in process	4.3		3.5
Finished goods	364.9		264.8
Total inventories	$	413.9	$	305.1

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Goodwill and Identifiable Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2021

Finite-Lived Intangible Assets [Line Items]

Changes in Net Carrying Amount of Goodwill by Segment

Changes in the net carrying amount of goodwill by segment were as follows:

(in millions)	ACCO Brands North America		ACCO Brands EMEA		ACCO Brands International		Total
Balance at December 31, 2020	$	461.2	$	188.2	$	178.0	$	827.4
Acquisitions(1)	(14.5)		2.0		—		(12.5)
Foreign currency translation	—		(10.2)		(0.5)		(10.7)
Balance at September 30, 2021	$	446.7	$	180.0	$	177.5	$	804.2

(1)Goodwill has been recorded on our Consolidated Balance Sheet related to the Franken acquisition, which is part of our EMEA segment, and represents the excess of the cost of the Franken acquisition when compared to the fair value estimate of the net assets acquired on April 1, 2021 (the date of the Franken acquisition). Goodwill has been recorded on our Consolidated Balance Sheet related to the PowerA Acquisition and represents the excess of the cost of the PowerA Acquisition when compared to the fair value estimate of the net assets acquired on December 17, 2020 (the date of the PowerA Acquisition) and includes a working capital adjustment of $18.2 million recorded in the first quarter of 2021 as a reduction to the purchase price, partially offset by purchase accounting adjustments of $3.7 million. See "Note 3. Acquisitions" for details on the calculation of the goodwill acquired in the PowerA Acquisition.

Gross Carrying Value and Accumulated Amortization by Class of Identifiable Intangible Assets

The gross carrying value and accumulated amortization by class of identifiable intangible assets as of September 30, 2021 and December 31, 2020, were as follows:

	September 30, 2021							December 31, 2020
(in millions)	Gross Carrying Amounts		Accumulated Amortization			Net Book Value		Gross Carrying Amounts		Accumulated Amortization			Net Book Value
Indefinite-lived intangible assets:
Trade names	$	420.5	$	(44.5)	(1)	$	376.0	$	467.5	$	(44.5)	(1)	$	423.0
Amortizable intangible assets:
Trade names	375.7		(107.2)			268.5		343.5		(97.7)			245.8
Customer and contractual relationships	368.7		(177.4)			191.3		376.8		(162.9)			213.9
Vendor relationships	82.4		(4.6)			77.8		87.7		(0.2)			87.5
Patents	8.6		(2.8)			5.8		8.9		(2.1)			6.8
Subtotal	835.4		(292.0)			543.4		816.9		(262.9)			554.0
Total identifiable intangibles	$	1,255.9	$	(336.5)		$	919.4	$	1,284.4	$	(307.4)		$	977.0

(1)Accumulated amortization prior to the adoption of authoritative guidance on goodwill and other intangible assets, at which time further amortization ceased.

Estimated Amortization Expense for Future Periods

Estimated amortization expense for amortizable intangible assets, as of September 30, 2021, for the current year and the next five years is as follows:

(in millions)	2021		2022		2023		2024		2025		2026
Estimated amortization expense(2)	$	47.1	$	43.9	$	41.5	$	39.8	$	38.1	$	35.8

(2)    Actual amounts of amortization expense may differ from estimated amounts due to changes in foreign currency exchange rates, additional intangible asset acquisitions, impairment of intangible assets, accelerated amortization of intangible assets and other events.

PowerA

Finite-Lived Intangible Assets [Line Items]

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination

The allocation of the identifiable intangibles acquired in the PowerA Acquisition was as follows:

(in millions)	Fair Value		Remaining Useful Life
Trade name	$	21.6	15 years
Customer relationships	128.6		15 years
Vendor relationships	82.4		15 years
Developed technology	2.8		5 years
Total identifiable intangibles acquired	$	235.4

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Restructuring (Tables)

9 Months Ended

Sep. 30, 2021

Restructuring and Related Activities [Abstract]

Summary of Activity in Restructuring Accounts

The summary of the activity in the restructuring liability for the nine months ended September 30, 2021, was as follows:

(in millions)	Balance at December 31, 2020		Provision		Cash Expenditures		Non-cash Items/ Currency Change		Balance at September 30, 2021
Employee termination costs(1)	$	8.1	$	3.8	$	(8.0)	$	(0.1)	$	3.8
Termination of lease agreements(2)	1.0		0.3		(0.9)		0.6		1.0
Other	0.2		0.1		(0.2)		(0.1)		—
Total restructuring liability	$	9.3	$	4.2	$	(9.1)	$	0.4	$	4.8

(1) We expect the remaining $3.8 million employee termination costs to be substantially paid in the next nine months.

(2) We expect the remaining $1.0 million lease termination costs to be substantially paid in the next nine months.

The summary of the activity in the restructuring liability for the nine months ended September 30, 2020, was as follows:

(in millions)	Balance at December 31, 2019		Provision		Cash Expenditures		Non-cash Items/ Currency Change		Balance at September 30, 2020
Employee termination costs	$	10.7	$	6.7	$	(8.4)	$	(0.1)	$	8.9
Termination of lease agreements	0.6		0.1		(0.5)		—		0.2
Other	0.5		0.5		(0.5)		(0.4)		0.1
Total restructuring liability	$	11.8	$	7.3	$	(9.4)	$	(0.5)	$	9.2

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Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The number of our weighted-average shares outstanding for the three and nine months ended September 30, 2021 and 2020 was as follows:

	Three Months Ended September 30,		Nine Months Ended September 30,
(in millions)	2021	2020	2021	2020
Weighted-average number of shares of common stock outstanding - basic	95.6	94.5	95.4	95.0
Stock options	0.2	—	0.1	0.1
Restricted stock units	1.5	1.1	1.5	1.1
Weighted-average shares and assumed conversions - diluted	97.3	95.6	97.0	96.2

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Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following table summarizes the fair value of our derivative financial instruments as of September 30, 2021 and December 31, 2020:

	Fair Value of Derivative Instruments
	Derivative Assets					Derivative Liabilities
(in millions)	Balance Sheet Location	September 30, 2021		December 31, 2020		Balance Sheet Location	September 30, 2021		December 31, 2020
Derivatives designated as hedging instruments:
Foreign exchange contracts	Other current assets	$	5.1	$	0.1	Other current liabilities	$	0.1	$	5.0
Derivatives not designated as hedging instruments:
Foreign exchange contracts	Other current assets	0.4		1.6		Other current liabilities	0.7		1.2
Foreign exchange contracts	Other non-current assets	16.3		32.1		Other non-current liabilities	16.3		32.1
Total derivatives		$	21.8	$	33.8		$	17.1	$	38.3

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

The following tables summarize the pre-tax effect of our derivative financial instruments on the condensed consolidated financial statements for the three and nine months ended September 30, 2021 and 2020:

	The Effect of Derivative Instruments in Cash Flow Hedging Relationships on the Consolidated Financial Statements
	Amount of Gain (Loss) Recognized in AOCI (Effective Portion)				Location of (Gain) Loss Reclassified from AOCI to Income	Amount of (Gain) Loss Reclassified from AOCI to Income (Effective Portion)
	Three Months Ended September 30,					Three Months Ended September 30,
(in millions)	2021		2020			2021		2020
Cash flow hedges:
Foreign exchange contracts	$	3.9	$	(2.1)	Cost of products sold	$	(0.5)	$	1.3
	The Effect of Derivative Instruments in Cash Flow Hedging Relationships on the Consolidated Financial Statements
	Amount of Gain (Loss) Recognized in AOCI (Effective Portion)				Location of (Gain) Loss Reclassified from AOCI to Income	Amount of (Gain) Loss Reclassified from AOCI to Income (Effective Portion)
	Nine Months Ended September 30,					Nine Months Ended September 30,
(in millions)	2021		2020			2021		2020
Cash flow hedges:
Foreign exchange contracts	$	7.3	$	0.3	Cost of products sold	$	2.3	$	(1.2)

	The Effect of Derivatives Not Designated as Hedging Instruments on the Consolidated Statements of Operations
	Location of (Gain) Loss Recognized in Income on Derivatives	Amount of (Gain) Loss Recognized in Income				Amount of (Gain) Loss Recognized in Income
		Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)		2021		2020		2021		2020
Foreign exchange contracts	Other expense, net	$	0.3	$	2.8	$	0.3	$	(2.4)

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Fair Value Of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table sets forth our financial assets and liabilities that were accounted for at fair value on a recurring basis as of September 30, 2021 and December 31, 2020:

(in millions)	September 30, 2021		December 31, 2020
Assets:
Forward currency contracts	$	21.8	$	33.8
Liabilities:
Forward currency contracts	$	17.1	$	38.3

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

The following table provides a reconciliation of the beginning and ending balance of the contingent consideration for the nine months ended September 30, 2021:

(in millions)	Contingent Consideration
Balance at December 31, 2020	$	18.2
Change in fair value	16.5
Balance at September 30, 2021	$	34.7

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Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2021

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The components of, and changes in, AOCI were as follows:

(in millions)	Derivative Financial Instruments		Foreign Currency Adjustments		Unrecognized Pension and Other Post-retirement Benefit Costs		Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2020	$	(3.1)	$	(318.8)	$	(242.3)	$	(564.2)
Other comprehensive income (loss) before reclassifications, net of tax	5.0		(18.6)		3.6		(10.0)
Amounts reclassified from accumulated other comprehensive income, net of tax	1.7		—		7.1		8.8
Balance at September 30, 2021	$	3.6	$	(337.4)	$	(231.6)	$	(565.4)

Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss)

The reclassifications out of AOCI for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
(in millions)	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)				Amount Reclassified from Accumulated Other Comprehensive Income (Loss)				Location on Income Statement
Details about Accumulated Other Comprehensive Income (Loss) Components
Gain (loss) on cash flow hedges:
Foreign exchange contracts	$	0.5	$	(1.3)	$	(2.3)	$	1.2	Cost of products sold
Tax (expense) benefit	(0.2)		0.5		0.6		(0.3)		Income tax expense
Net of tax	$	0.3	$	(0.8)	$	(1.7)	$	0.9
Defined benefit plan items:
Amortization of actuarial loss	$	(2.5)	$	(2.0)	$	(7.7)	$	(5.7)	(1)
Amortization of prior service cost	(0.1)		(0.2)		(1.7)		(0.5)		(1)
Total before tax	(2.6)		(2.2)		(9.4)		(6.2)
Tax benefit	0.7		0.6		2.3		1.3		Income tax expense
Net of tax	$	(1.9)	$	(1.6)	$	(7.1)	$	(4.9)
Total reclassifications for the period, net of tax	$	(1.6)	$	(2.4)	$	(8.8)	$	(4.0)

(1)     These AOCI components are included in the computation of net periodic benefit cost for pension and post-retirement plans. See "Note 6. Pension and Other Retiree Benefits" for additional details.

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Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables present our net sales disaggregated by regional geography(1), by reporting business segments and our net sales disaggregated by the timing of revenue recognition for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
United States	$	253.9	$	203.5	$	685.5	$	562.5
Canada	33.6		35.0		85.9		75.5
ACCO Brands North America	287.5		238.5		771.4		638.0
ACCO Brands EMEA(2)	161.1		136.4		475.0		352.2
Australia/N.Z.	35.3		31.7		96.8		83.6
Latin America	30.8		27.5		72.2		90.8
Asia-Pacific	12.0		10.0		39.6		30.5
ACCO Brands International	78.1		69.2		208.6		204.9
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

(1) Net sales are attributed to geographic areas based on the location of the selling subsidiaries.

(2) ACCO Brands EMEA is comprised largely of Europe, but also includes export sales to the Middle East and Africa.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
Product and services transferred at a point in time	$	515.4	$	431.1	$	1,416.0	$	1,148.5
Product and services transferred over time	11.3		13.0		39.0		46.6
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

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Information on Business Segments (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Schedule of Net Sales by Reporting Segments

Net sales by reportable business segment for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
ACCO Brands North America	$	287.5	$	238.5	$	771.4	$	638.0
ACCO Brands EMEA	161.1		136.4		475.0		352.2
ACCO Brands International	78.1		69.2		208.6		204.9
Net sales	$	526.7	$	444.1	$	1,455.0	$	1,195.1

Schedule of Operating Income by Reporting Segment

Operating income by business segment for the three and nine months ended September 30, 2021 and 2020 was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2021		2020		2021		2020
ACCO Brands North America	$	34.6	$	22.9	$	87.7	$	67.9
ACCO Brands EMEA	13.4		16.7		40.1		26.9
ACCO Brands International	7.3		3.7		10.7		5.2
Segment operating income	55.3		43.3		138.5		100.0
Change in fair value of contingent consideration	(4.9)		—		(16.5)		—
Corporate	(11.8)		(9.0)		(34.6)		(29.8)
Operating income(1)	38.6		34.3		87.4		70.2
Interest expense	11.2		10.2		36.0		28.7
Interest income	(0.6)		(0.2)		(1.2)		(0.8)
Non-operating pension income	(2.3)		(1.4)		(5.6)		(4.4)
Other expense, net	0.1		0.1		4.0		0.8
Income before income tax	$	30.2	$	25.6	$	54.2	$	45.9

(1)Operating income is defined as i) net sales; ii) less cost of products sold; iii) less selling, general and administrative expenses; iv) less amortization of intangibles; v) less restructuring charges; and vi) less change in the fair value of contingent consideration.

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Basis of Presentation Narrative (Details) € in Millions, $ in Millions	Apr. 01, 2021 USD ($)	Apr. 01, 2021 EUR (€)	Dec. 17, 2020 USD ($)	Sep. 30, 2021 USD ($)
PowerA
Business Acquisition [Line Items]
Purchase price, net of working capital adjustment			$ 321.8
Additional earnout (up to)			$ 55.0
Additional earnout				$ 34.7
Franken
Business Acquisition [Line Items]
Purchase price, net of working capital adjustment	$ 2.8	€ 2.4
Cash acquired	$ 1.1

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Acquisitions (Narrative) (Details) € in Millions, $ in Millions				3 Months Ended				9 Months Ended		12 Months Ended
	Apr. 01, 2021 USD ($)	Apr. 01, 2021 EUR (€)	Dec. 17, 2020 USD ($) reportingUnit	Sep. 30, 2021 USD ($)	Jun. 30, 2021 reportingUnit	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Number of reporting units | reportingUnit			3		3
Working capital adjustment						$ (18.2)
Revenues				$ 526.7			$ 444.1	$ 1,455.0	$ 1,195.1
Goodwill				804.2				804.2		$ 827.4
Franken
Business Acquisition [Line Items]
Preliminary purchase price	$ 2.8	€ 2.4
Cash acquired	$ 1.1
PowerA
Business Acquisition [Line Items]
Preliminary purchase price			$ 321.8
Additional earnout (up to)			55.0
Additional earnout				34.7				34.7
Revenues				$ 56.8				170.2
Goodwill			$ 71.1
PowerA | Selling, General and Administrative Expenses
Business Acquisition [Line Items]
Transaction related costs								$ 0.1		$ 3.7

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Acquisitions (Purchase Price Allocation to the Fair Value of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions	Dec. 17, 2020	Sep. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill		$ 804.2	$ 827.4
PowerA
Business Acquisition [Line Items]
Purchase price, net of working capital adjustment	$ 321.8
Fair value of contingent consideration	18.2	$ 34.7	$ 18.2
Accrued liabilities	9.2
Fair value of liabilities assumed	9.2
Inventory	29.3
Property and equipment	0.2
Identifiable intangibles	235.4
Other assets	13.2
Fair value of assets acquired	278.1
Goodwill	$ 71.1

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Acquisitions (Pro Forma) (Details) - PowerA - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Net sales	$ 526.7	$ 501.4	$ 1,455.0	$ 1,325.5
Net income	$ 20.2	$ 24.9	$ 48.4	$ 41.6
Net income per diluted share (in USD per share)	$ 0.21	$ 0.26	$ 0.50	$ 0.43

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Long-Term Debt and Short-Term Borrowings (Notes Payable and Long-term Debt) (Details) - USD ($)	Sep. 30, 2021	Mar. 15, 2021	Dec. 31, 2020	May 23, 2019
Debt Instrument [Line Items]
Total debt	$ 1,130,100,000		$ 1,136,600,000
Current portion	36,200,000		76,500,000
Debt issuance costs, unamortized	10,000,000.0		5,500,000
Long-term debt, net	1,083,900,000		1,054,600,000
Other borrowings
Debt Instrument [Line Items]
Total debt	8,100,000		5,700,000
Senior Secured Notes | Euro Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.25% at September 30, 2021)
Debt Instrument [Line Items]
Total debt	$ 264,300,000		0
Floating interest rate (percent)	2.25%
Senior Secured Notes | Euro Senior Secured Term Loan A, due May 2024 (floating interest rate of 2.50% at December 31, 2020)
Debt Instrument [Line Items]
Total debt	$ 0		$ 287,400,000
Floating interest rate (percent)			2.50%
Senior Secured Notes | USD Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.38% at September 30, 2021)
Debt Instrument [Line Items]
Total debt	$ 90,200,000		$ 0
Floating interest rate (percent)	2.38%
Senior Secured Notes | USD Senior Secured Term Loan A, due May 2024 (floating interest rate of 3.50% at December 31, 2020)
Debt Instrument [Line Items]
Total debt	$ 0		$ 92,500,000	$ 100,000,000
Floating interest rate (percent)			3.50%
Senior Secured Notes | Australian Dollar Senior Secured Term Loan A, due March 2026 (floating interest rate of 2.32% at September 30, 2021)
Debt Instrument [Line Items]
Total debt	$ 39,500,000		$ 0
Floating interest rate (percent)	2.32%
Senior Secured Notes | Australian Dollar Senior Secured Term Loan A, due May 2024 (floating interest rate of 2.57% at December 31, 2020)
Debt Instrument [Line Items]
Total debt	$ 0		$ 43,400,000
Floating interest rate (percent)			2.57%
Senior Secured Notes | U.S. Dollar Senior Secured Revolving Credit Facility, due March 2026 (floating interest rate of 2.33% at September 30, 2021)
Debt Instrument [Line Items]
Total debt	$ 120,400,000		$ 0
Floating interest rate (percent)	2.33%
Senior Secured Notes | U.S. Dollar Senior Secured Revolving Credit Facility, due May 2024 (floating interest rate of 3.50% at December 31, 2020)
Debt Instrument [Line Items]
Total debt	$ 0		$ 307,200,000
Floating interest rate (percent)			3.50%
Senior Secured Notes | Australian Dollar Senior Secured Revolving Credit Facility, due March 2026 (floating interest rate of 2.31% at September 30, 2021)
Debt Instrument [Line Items]
Total debt	$ 32,600,000		$ 0
Floating interest rate (percent)	2.31%
Senior Secured Notes | Australian Dollar Senior Secured Revolving Credit Facility, due May 2024 (floating interest rate of 2.57% at December 31, 2020)
Debt Instrument [Line Items]
Total debt	$ 0		$ 25,400,000
Floating interest rate (percent)			2.57%
Senior Notes | Senior Unsecured Notes, due March 2029 (fixed interest rate of 4.25%)
Debt Instrument [Line Items]
Total debt	$ 575,000,000.0		$ 0
Stated interest rate (percent)	4.25%	4.25%
Senior Notes | Senior Unsecured Notes, due December 2024 (fixed interest rate of 5.25%)
Debt Instrument [Line Items]
Total debt	$ 0		$ 375,000,000.0
Stated interest rate (percent)	5.25%	5.25%

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Long-Term Debt and Short-Term Borrowings (Narrative) (Details)				3 Months Ended
	Mar. 15, 2021 USD ($)	Jul. 26, 2018 USD ($)	Jan. 27, 2017 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Nov. 10, 2020 USD ($)	May 01, 2020 USD ($)	Apr. 30, 2020	May 23, 2019 USD ($)	May 22, 2019 USD ($)	Jan. 27, 2017 EUR (€)	Jan. 27, 2017 AUD ($)
Debt Instrument [Line Items]
Total debt				$ 1,130,100,000			$ 1,136,600,000
Write-off of debt issuance costs				$ 3,700,000
Secured Debt | Senior Secured Credit Facility Due January 2022
Debt Instrument [Line Items]
Consolidated leverage ratio (including share repurchases and dividends)												2.50
Secured Debt | Senior Secured Credit Facility Due January 2022 | Minimum
Debt Instrument [Line Items]
Fixed coverage ratio												1.25
Secured Debt | Revolving Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 400,000,000
Secured Debt | Senior Secured Credit Facility Due May 2024
Debt Instrument [Line Items]
Maximum consolidated leverage ratio				3.75					4.75	3.75
Cash and cash equivalents of the loan parties									$ 100,000,000
Capitalized bank, legal and other fees								$ 3,200,000
Secured Debt | Senior Secured Credit Facility Due May 2024 | Minimum
Debt Instrument [Line Items]
Interest coverage ratio											3.00
Secured Debt | Senior Secured Credit Facility Due March 2026
Debt Instrument [Line Items]
Maximum consolidated leverage ratio				4.00
Secured Debt | Senior Secured Credit Facility Due March 2026 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate (percent)					2.25%
Senior Secured Credit Facility Due January 2022
Debt Instrument [Line Items]
Debt instrument, term			5 years
Senior Secured Credit Facility Due January 2022 | Secured Debt | Revolving Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 500,000,000										$ 500,000,000
Increase in aggregate revolving credit commitment		$ 100,000,000
Euro Term Loan A | Secured Debt
Debt Instrument [Line Items]
Debt instrument, face amount			$ 320,800,000										€ 300,000,000
AUD Term Loan A | Secured Debt
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 60,400,000											$ 80,000,000
USD Senior Secured Term Loan A, due May 2024 (floating interest rate of 3.50% at December 31, 2020) | Secured Debt
Debt Instrument [Line Items]
Total debt				$ 0			92,500,000				$ 100,000,000
Senior Secured Credit Facility Due March 2026 | Secured Debt
Debt Instrument [Line Items]
Consolidated leverage ratio				3.8
Senior Unsecured Notes, due December 2024 (fixed interest rate of 5.25%) | Senior Notes
Debt Instrument [Line Items]
Total debt				$ 0			375,000,000.0
Stated interest rate (percent)	5.25%			5.25%
Repayments of outstanding borrowings	$ 178,000,000
Aggregate redemption price						$ 390,600,000
Redemption price, principal						375,000,000
Redemption price, call premium						9,800,000
Redemption price, accrued and unpaid interest						$ 5,800,000
Senior Unsecured Notes, due March 2029 (fixed interest rate of 4.25%) | Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	575,000,000
Total debt				$ 575,000,000.0			$ 0
Capitalized bank, legal and other fees	$ 8,200,000
Stated interest rate (percent)	4.25%			4.25%
Senior Secured Credit Facility Due May 2024 | Secured Debt | Revolving Facility
Debt Instrument [Line Items]
Maximum borrowing capacity											$ 600,000,000
Total debt				$ 153,000,000
Amount available for borrowings under Senior Secured Revolving Credit Facilities				434,500,000
Letters of credit outstanding				$ 12,500,000
Senior Secured Credit Facility Due May 2024 | Secured Debt | Senior Secured Credit Facility Due May 2024
Debt Instrument [Line Items]
Consolidated leverage ratio (including share repurchases and dividends)											3.25

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Long-term Debt and Short-term Borrowings (Amended Maximum Consolidated Leverage Ratio) (Details) - Senior Secured Credit Facility Due March 2026 - Secured Debt	Mar. 15, 2021	Nov. 10, 2020
March 2021
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio		5.25
June 2021
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio		5.25
September 2021
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio	4.75
December 2021
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio		4.25
March 2022
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio		4.25
June 2022
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio		4.25
September 2022 and thereafter
Line of Credit Facility [Line Items]
Maximum consolidated leverage ratio		3.75

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Long-Term Debt and Short-Term Borrowings (Interest Rates) (Details) - Secured Debt - Senior Secured Credit Facility Due March 2026	9 Months Ended
	Sep. 30, 2021
> 4.50 to 1.00
Debt Instrument [Line Items]
Undrawn fee (percent)	0.50%
≤ 4.50 to 1.00 and > 4.00 to 1.00
Debt Instrument [Line Items]
Undrawn fee (percent)	0.375%
≤ 4.00 to 1.00 and > 3.50 to 1.00
Debt Instrument [Line Items]
Undrawn fee (percent)	0.35%
≤ 3.50 to 1.00 and > 3.00 to 1.00
Debt Instrument [Line Items]
Undrawn fee (percent)	0.30%
≤ 3.00 to 1.00 and > 2.00 to 1.00
Debt Instrument [Line Items]
Undrawn fee (percent)	0.25%
≤ 2.00 to 1.00
Debt Instrument [Line Items]
Undrawn fee (percent)	0.20%
Applicable Rate on Euro/AUD/CDN Dollar Loans | > 4.50 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	2.50%
Applicable Rate on Euro/AUD/CDN Dollar Loans | ≤ 4.50 to 1.00 and > 4.00 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	2.25%
Applicable Rate on Euro/AUD/CDN Dollar Loans | ≤ 4.00 to 1.00 and > 3.50 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	2.00%
Applicable Rate on Euro/AUD/CDN Dollar Loans | ≤ 3.50 to 1.00 and > 3.00 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.75%
Applicable Rate on Euro/AUD/CDN Dollar Loans | ≤ 3.00 to 1.00 and > 2.00 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.50%
Applicable Rate on Euro/AUD/CDN Dollar Loans | ≤ 2.00 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.25%
Applicable Rate on Base Rate Loans | > 4.50 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.50%
Applicable Rate on Base Rate Loans | ≤ 4.50 to 1.00 and > 4.00 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.25%
Applicable Rate on Base Rate Loans | ≤ 4.00 to 1.00 and > 3.50 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.00%
Applicable Rate on Base Rate Loans | ≤ 3.50 to 1.00 and > 3.00 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.75%
Applicable Rate on Base Rate Loans | ≤ 3.00 to 1.00 and > 2.00 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.50%
Applicable Rate on Base Rate Loans | ≤ 2.00 to 1.00
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.25%

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Leases (Lease Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease cost	$ 8.1	$ 6.7	$ 22.3	$ 21.0
Sublease income	(0.9)	(0.2)	(1.5)	(0.9)
Total lease cost	$ 7.2	$ 6.5	$ 20.8	$ 20.1

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Leases (Other Information) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating cash flows from operating leases	$ 23.8	$ 21.5
Right-of-use assets obtained in exchange for lease obligations:	$ 15.0	$ 3.3
Weighted average remaining lease term, operating leases (in years)	6 years 1 month 24 days
Weighted average discount rate, operating leases (as a percentage)	5.10%

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Leases (Future Minimum Lease Payments) (Details) $ in Millions	Sep. 30, 2021 USD ($)
Leases [Abstract]
2021	$ 6.9
2022	24.1
2023	18.3
2024	14.8
2025	12.0
2026	9.4
Thereafter	24.2
Total minimum lease payments	109.7
Less imputed interest	17.4
Future minimum payments for leases, net of sublease rental income and imputed interest	$ 92.3

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Pension and Other Retiree Benefits (Net Periodic Benefit Expense) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021		Sep. 30, 2020
Defined Benefit Plan Disclosure [Line Items]
Expected contributions to defined benefit plans for 2021		$ 22.8		$ 22.8
Contributions by company to date				16.4
Pension | United States
Defined Benefit Plan Disclosure [Line Items]
Service cost		0.0	$ 0.4	0.5		$ 1.2
Interest cost		1.2	1.5	3.4		4.4
Expected return on plan assets		(2.9)	(2.8)	(8.5)		(8.5)
Amortization of net loss (gain)		0.9	0.8	2.7		2.4
Amortization of prior service cost		0.0	0.1	0.1		0.3
Curtailment loss				1.4	[1]	0.0
Net periodic benefit cost (income)	[2]	(0.8)	0.0	(0.4)		(0.2)
Pension | International
Defined Benefit Plan Disclosure [Line Items]
Service cost		0.4	0.4	1.2		1.1
Interest cost		1.5	2.4	4.7		7.2
Expected return on plan assets		(4.7)	(4.7)	(14.5)		(13.8)
Amortization of net loss (gain)		1.7	1.3	5.3		3.7
Amortization of prior service cost		0.1	0.1	0.2		0.2
Curtailment loss				0.0		0.0
Net periodic benefit cost (income)	[2]	(1.0)	(0.5)	(3.1)		(1.6)
Post-retirement
Defined Benefit Plan Disclosure [Line Items]
Service cost		0.0	0.0	0.0		0.0
Interest cost		0.0	0.0	0.0		0.1
Expected return on plan assets		0.0	0.0	0.0		0.0
Amortization of net loss (gain)		(0.1)	(0.1)	(0.3)		(0.4)
Amortization of prior service cost		0.0	0.0	0.0		0.0
Curtailment loss				0.0		0.0
Net periodic benefit cost (income)	[2]	$ (0.1)	$ (0.1)	$ (0.3)		$ (0.3)

[1] Curtailment loss of $1.4 million due to the pension benefit freeze for the Sidney group under the ACCO Brands Corporation Pension Plan.

[2] The components of net periodic benefit cost (income), other than service cost, are included in the line "Non-operating pension income" in the Consolidated Statements of Income.

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Stock-Based Compensation (Share-based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	$ 3.2	$ 1.8	$ 12.2	$ 5.2
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	0.6	0.5	2.9	2.1
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	0.9	1.3	4.3	4.3
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	$ 1.7	$ 0.0	$ 5.0	$ (1.2)

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Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	$ 3.2	$ 1.8	$ 12.2	$ 5.2
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	$ 0.6	0.5	2.9	2.1
Stock options granted in period (shares)	4,773
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	$ 0.9	1.3	4.3	4.3
Equity instruments other than options granted in period (shares)	22,288
Restricted stock units | Non-employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	$ 0.2	1.0	0.4	1.0
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income)	$ 1.7	$ 0.0	$ 5.0	$ (1.2)
Equity instruments other than options granted in period (shares)	2,864

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Stock-Based Compensation (Unrecognized Compensation Expense) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Expense	$ 3.9
Weighted Average Years Expense To Be Recognized Over	1 year 10 months 24 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Expense	$ 4.3
Weighted Average Years Expense To Be Recognized Over	1 year 8 months 12 days
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Expense	$ 10.7
Weighted Average Years Expense To Be Recognized Over	1 year 9 months 18 days

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Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 44.7	$ 36.8
Work in process	4.3	3.5
Finished goods	364.9	264.8
Total inventories	$ 413.9	$ 305.1

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Goodwill and Identifiable Intangible Assets (Goodwill) (Details) $ in Millions		3 Months Ended		9 Months Ended
	Dec. 17, 2020 USD ($) reportingUnit	Jun. 30, 2021 reportingUnit	Mar. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	May 31, 2021 USD ($)	Dec. 31, 2016 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Number of reporting units | reportingUnit	3	3
Goodwill, accumulated impairment losses					$ 0.0	$ 215.1
Goodwill [Roll Forward]
Balance at December 31, 2020			$ 827.4	$ 827.4
Acquisitions				(12.5)
Foreign currency translation				(10.7)
Balance at September 30, 2021				804.2
Working capital adjustment			(18.2)
Purchase accounting adjustments			3.7
PowerA
Goodwill [Roll Forward]
Balance at September 30, 2021	$ 71.1
ACCO Brands North America
Goodwill [Roll Forward]
Balance at December 31, 2020			461.2	461.2
Acquisitions				(14.5)
Foreign currency translation				0.0
Balance at September 30, 2021				446.7
ACCO Brands EMEA
Goodwill [Roll Forward]
Balance at December 31, 2020			188.2	188.2
Acquisitions				2.0
Foreign currency translation				(10.2)
Balance at September 30, 2021				180.0
ACCO Brands International
Goodwill [Roll Forward]
Balance at December 31, 2020			$ 178.0	178.0
Acquisitions				0.0
Foreign currency translation				(0.5)
Balance at September 30, 2021				$ 177.5

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Goodwill and Identifiable Intangible Assets (Acquired Finite-Lived Intangibles) (Details) - USD ($) $ in Millions		9 Months Ended
	Jun. 01, 2021	Sep. 30, 2021	Dec. 17, 2020
Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	30 years
PowerA
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			$ 235.4
PowerA | Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			21.6
Finite-lived intangible asset, useful life		15 years
PowerA | Customer and contractual relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			128.6
Finite-lived intangible asset, useful life		15 years
PowerA | Vendor Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			82.4
Finite-lived intangible asset, useful life		15 years
PowerA | Developed Technology Rights
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			$ 2.8
Finite-lived intangible asset, useful life		5 years

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Goodwill and Identifiable Intangible Assets (Narrative) (Details) - USD ($) $ in Millions		9 Months Ended
	Jun. 01, 2021	Sep. 30, 2021	Dec. 17, 2020
Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	30 years
PowerA
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			$ 235.4
PowerA | Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			21.6
Finite-lived intangible asset, useful life		15 years
PowerA | Customer and contractual relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			128.6
Finite-lived intangible asset, useful life		15 years
PowerA | Vendor Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			82.4
Finite-lived intangible asset, useful life		15 years
PowerA | Developed Technology Rights
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangibles			$ 2.8
Finite-lived intangible asset, useful life		5 years

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Goodwill and Identifiable Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Millions		Sep. 30, 2021	Dec. 31, 2020
Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amounts		$ 835.4	$ 816.9
Amortizable intangible assets, Accumulated Amortization		(292.0)	(262.9)
Amortizable intangible assets, Net Book Value		543.4	554.0
Total identifiable intangibles, Gross Carrying Amounts		1,255.9	1,284.4
Total identifiable intangibles, Accumulated Amortization		(336.5)	(307.4)
Total identifiable intangibles, Net Book Value		919.4	977.0
Trade Names
Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amounts		375.7	343.5
Amortizable intangible assets, Accumulated Amortization		(107.2)	(97.7)
Amortizable intangible assets, Net Book Value		268.5	245.8
Customer and contractual relationships
Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amounts		368.7	376.8
Amortizable intangible assets, Accumulated Amortization		(177.4)	(162.9)
Amortizable intangible assets, Net Book Value		191.3	213.9
Vendor Relationships
Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amounts		82.4	87.7
Amortizable intangible assets, Accumulated Amortization		(4.6)	(0.2)
Amortizable intangible assets, Net Book Value		77.8	87.5
Patents
Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amounts		8.6	8.9
Amortizable intangible assets, Accumulated Amortization		(2.8)	(2.1)
Amortizable intangible assets, Net Book Value		5.8	6.8
Trade Names
Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross carrying amount		420.5	467.5
Indefinite lived intangible asset accumulated amortization prior to the adoption of authoritative guidance	[1]	(44.5)	(44.5)
Indefinite-lived intangible assets, Net Book Value		$ 376.0	$ 423.0

[1] Accumulated amortization prior to the adoption of authoritative guidance on goodwill and other intangible assets, at which time further amortization ceased.

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Goodwill and Identifiable Intangible Assets (Estimated Amortization Expense) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangibles		$ 11.6	$ 7.9	$ 35.2	$ 24.1
Estimated amortization expense, 2021	[1]	47.1		47.1
Estimated amortization expense, 2022	[1]	43.9		43.9
Estimated amortization expense, 2023	[1]	41.5		41.5
Estimated amortization expense, 2024	[1]	39.8		39.8
Estimated amortization expense, 2025	[1]	38.1		38.1
Estimated amortization expense, 2026	[1]	$ 35.8		$ 35.8

[1] Actual amounts of amortization expense may differ from estimated amounts due to changes in foreign currency exchange rates, additional intangible asset acquisitions, impairment of intangible assets, accelerated amortization of intangible assets and other events.

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Goodwill and Identifiable Intangible Assets - Change to Trade Names (Details) - USD ($)	Jun. 01, 2021	May 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment of indefinite-lived trade names		$ 0
Tilibra Trade Name
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	30 years

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Restructuring (Restructuring Charges and Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021		Sep. 30, 2020	Sep. 30, 2021		Sep. 30, 2020
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period				$ 9.3		$ 11.8
Provision	$ 0.3		$ 0.5	4.2		7.3
Cash Expenditures				(9.1)		(9.4)
Non-cash Items/ Currency Change				0.4		(0.5)
Balance at End of Period	4.8		9.2	4.8		9.2
Employee termination costs
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period				8.1		10.7
Provision				3.8		6.7
Cash Expenditures				(8.0)		(8.4)
Non-cash Items/ Currency Change				(0.1)		(0.1)
Balance at End of Period	3.8	[1]	8.9	$ 3.8	[1]	8.9
Payment period for restructuring costs				9 months
Termination of lease agreements
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period				$ 1.0		0.6
Provision				0.3		0.1
Cash Expenditures				(0.9)		(0.5)
Non-cash Items/ Currency Change				0.6		0.0
Balance at End of Period	1.0	[2]	0.2	$ 1.0	[2]	0.2
Payment period for restructuring costs				9 months
Other
Restructuring Reserve [Roll Forward]
Balance at Beginning of Period				$ 0.2		0.5
Provision				0.1		0.5
Cash Expenditures				(0.2)		(0.5)
Non-cash Items/ Currency Change				(0.1)		(0.4)
Balance at End of Period	$ 0.0		$ 0.1	$ 0.0		$ 0.1

[1] (1) We expect the remaining $3.8 million employee termination costs to be substantially paid in the next nine months.

[2] (2) We expect the remaining $1.0 million lease termination costs to be substantially paid in the next nine months.

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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Mar. 31, 2019	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2012
Income Tax Examination [Line Items]
Income tax expense	$ 10.0		$ 6.8		$ 5.8	$ 13.7
Income before income tax	$ 30.2		$ 25.6		$ 54.2	$ 45.9
Effective rate (percent)	33.10%		26.60%		10.70%	29.80%
Domestic Tax Authority | Internal Revenue Service (IRS) | Earliest Tax Year
Income Tax Examination [Line Items]
Open tax year					2017
Foreign Tax Authority | Minimum
Income Tax Examination [Line Items]
Statutes of limitation, period					2 years
Foreign Tax Authority | Maximum
Income Tax Examination [Line Items]
Statutes of limitation, period					5 years
Foreign Tax Authority | Australian Taxation Office | Earliest Tax Year
Income Tax Examination [Line Items]
Open tax year					2017
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil
Income Tax Examination [Line Items]
Income tax expense		$ 3.1
Income tax examination, interest expense					$ 0.3	$ 0.3
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil | Minimum
Income Tax Examination [Line Items]
Penalty rate	75.00%				75.00%
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil | Earliest Tax Year
Income Tax Examination [Line Items]
Open tax year					2015
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil | Tax Year 2008 to 2010
Income Tax Examination [Line Items]
Additional reserve from a prior period			$ 1.2	$ 5.6
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil | Tax Year 2007 to 2012
Income Tax Examination [Line Items]
Unrecognized tax benefits							$ 44.5
Potential tax adjustment related to related to acquisition purchase price							$ 43.3
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil | Tax Year 2007 | Maximum
Income Tax Examination [Line Items]
Penalty rate	150.00%				150.00%
Foreign Tax Authority | Canada Revenue Agency | Earliest Tax Year
Income Tax Examination [Line Items]
Open tax year					2017
Foreign Tax Authority | Federal Ministry of Finance, Germany | Earliest Tax Year
Income Tax Examination [Line Items]
Open tax year					2016
Foreign Tax Authority | Swedish Tax Agency (Skatteverket) | Earliest Tax Year
Income Tax Examination [Line Items]
Open tax year					2016
Foreign Tax Authority | Her Majesty's Revenue and Customs (HMRC) | Earliest Tax Year
Income Tax Examination [Line Items]
Open tax year					2019
Foreign Tax Authority | Other Noncurrent Liabilities | Secretariat of the Federal Revenue Bureau of Brazil | Tax Year 2007 to 2010
Income Tax Examination [Line Items]
Unrecognized tax benefits	$ 27.3				$ 27.3
State and Local Jurisdiction | Minimum
Income Tax Examination [Line Items]
Statutes of limitation, period					2 years
State and Local Jurisdiction | Maximum
Income Tax Examination [Line Items]
Statutes of limitation, period					5 years

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Earnings per Share (Details) - shares	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Weighted Average Number of Shares Outstanding Basic and Diluted [Line Items]
Common stock outstanding (in shares)	95,700,000	94,500,000		95,700,000	94,500,000
Common stock repurchases (shares)	0	0	2,690,292	0	2,700,000
Shares related to tax withholding for share-based compensation (in shares)				100,000	200,000
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average number of common shares outstanding - basic (in shares)	95,600,000	94,500,000		95,400,000	95,000,000.0
Weighted-average number of common shares outstanding - diluted (in shares)	97,300,000	95,600,000		97,000,000.0	96,200,000
Potentially dilutive shares excluded from computation of dilutive earnings per share (in shares)	8,000,000	8,000,000		8,000,000	7,500,000
Stock options
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Incremental dilutive common shares (in shares)	200,000	0		100,000	100,000
Restricted stock units
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Incremental dilutive common shares (in shares)	1,500,000	1,100,000		1,500,000	1,100,000

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Derivative Financial Instruments (Narrative) (Details) - Foreign exchange contracts - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivatives not designated as hedging instruments
Derivative [Line Items]
U.S. dollar equivalent notional value	$ 93.1	$ 164.7
Cash Flow Hedging | Derivatives designated as hedging instruments
Derivative [Line Items]
U.S. dollar equivalent notional value	$ 133.8	$ 134.3

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Derivative Financial Instruments (Fair Value of Derivative Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 21.8	$ 33.8
Derivative Liabilities	17.1	38.3
Foreign exchange contracts | Derivatives designated as hedging instruments | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	5.1	0.1
Foreign exchange contracts | Derivatives designated as hedging instruments | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0.1	5.0
Foreign exchange contracts | Derivatives not designated as hedging instruments | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	0.4	1.6
Foreign exchange contracts | Derivatives not designated as hedging instruments | Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0.7	1.2
Foreign exchange contracts | Derivatives not designated as hedging instruments | Other Noncurrent Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	16.3	32.1
Foreign exchange contracts | Derivatives not designated as hedging instruments | Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 16.3	$ 32.1

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Derivative Financial Instruments (Effect of Derivative Instruments) (Details) - Foreign exchange contracts - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Cost of products sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	$ (0.5)	$ 1.3	$ 2.3	$ (1.2)
Derivatives not designated as hedging instruments | Other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Gain) Loss Recognized in Income	0.3	2.8	0.3	(2.4)
Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI (Effective Portion)	$ 3.9	$ (2.1)	$ 7.3	$ 0.3

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Fair Value of Financial Instruments Schedule of Fair Value Assets and Liabilities measured on a Recurring Basis (Details) - Fair Value, Inputs, Level 2 - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Foreign currency contracts, assets	$ 21.8	$ 33.8
Foreign currency contracts, liabilities	$ 17.1	$ 38.3

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Fair Value of Financial Instruments Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt	$ 1,130.1	$ 1,136.6
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated fair value of total debt	$ 1,173.2	$ 1,146.9

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Fair Value of Financial Instruments (Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 17, 2020
Contingent Consideration [Roll Forward]
Change in fair value	$ 4.9	$ 0.0	$ 16.5	$ 0.0
PowerA
Contingent Consideration [Roll Forward]
Additional earnout (up to)					$ 55.0
Balance at December 31, 2020			18.2
Change in fair value			16.5
Balance at September 30, 2021	$ 34.7		$ 34.7

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Accumulated Other Comprehensive Income (Loss) (Rollforward) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	$ 742.7
Other comprehensive income (loss) before reclassifications, net of tax	(10.0)
Amounts reclassified from accumulated other comprehensive income, net of tax	8.8
Balance at end of period	785.0
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	(564.2)
Balance at end of period	(565.4)
Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	(3.1)
Other comprehensive income (loss) before reclassifications, net of tax	5.0
Amounts reclassified from accumulated other comprehensive income, net of tax	1.7
Balance at end of period	3.6
Foreign Currency Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	(318.8)
Other comprehensive income (loss) before reclassifications, net of tax	(18.6)
Amounts reclassified from accumulated other comprehensive income, net of tax	0.0
Balance at end of period	(337.4)
Unrecognized Pension and Other Post-retirement Benefit Costs
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at start of period	(242.3)
Other comprehensive income (loss) before reclassifications, net of tax	3.6
Amounts reclassified from accumulated other comprehensive income, net of tax	7.1
Balance at end of period	$ (231.6)

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Accumulated Other Comprehensive Income (Loss) (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		3 Months Ended						9 Months Ended
		Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Cost of products sold		$ (369.5)			$ (317.0)			$ (1,018.2)	$ (845.8)
Income tax (expense) benefit		(10.0)			(6.8)			(5.8)	(13.7)
Net income		20.2	$ 48.6	$ (20.4)	18.8	$ 5.4	$ 8.0	48.4	32.2
Income before income tax		30.2			25.6			54.2	45.9
Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Net income		(1.6)			(2.4)			(8.8)	(4.0)
Unrecognized Pension and Other Post-retirement Benefit Costs | Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit		0.7			0.6			2.3	1.3
Net income		(1.9)			(1.6)			(7.1)	(4.9)
Amortization of actuarial loss	[1]	(2.5)			(2.0)			(7.7)	(5.7)
Amortization of prior service cost	[1]	(0.1)			(0.2)			(1.7)	(0.5)
Income before income tax		(2.6)			(2.2)			(9.4)	(6.2)
Foreign exchange contracts | Derivative Financial Instruments | Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Cost of products sold		0.5			(1.3)			(2.3)	1.2
Income tax (expense) benefit		(0.2)			0.5			0.6	(0.3)
Net income		$ 0.3			$ (0.8)			$ (1.7)	$ 0.9

[1] These AOCI components are included in the computation of net periodic benefit cost for pension and post-retirement plans. See "Note 6. Pension and Other Retiree Benefits" for additional details.

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Revenue Recognition Service or Extended Maintenance Agreements (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Unearned revenue associated with outstanding contracts	$ 2.5	$ 3.0

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Revenue Recognition (Unearned Revenue) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized	$ 0.4	$ 2.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unearned revenue	$ 2.1	$ 2.1
Expected timing of satisfaction	12 months	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unearned revenue	$ 0.4	$ 0.4
Expected timing of satisfaction	12 months	12 months

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Revenue Recognition (Schedule of Disaggregation of Revenue) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Net sales		$ 526.7	$ 444.1	$ 1,455.0	$ 1,195.1
Product and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales		515.4	431.1	1,416.0	1,148.5
Product and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		11.3	13.0	39.0	46.6
ACCO Brands North America
Disaggregation of Revenue [Line Items]
Net sales		287.5	238.5	771.4	638.0
ACCO Brands North America | United States
Disaggregation of Revenue [Line Items]
Net sales		253.9	203.5	685.5	562.5
ACCO Brands North America | Canada
Disaggregation of Revenue [Line Items]
Net sales		33.6	35.0	85.9	75.5
ACCO Brands EMEA
Disaggregation of Revenue [Line Items]
Net sales	[1]	161.1	136.4	475.0	352.2
ACCO Brands International
Disaggregation of Revenue [Line Items]
Net sales		78.1	69.2	208.6	204.9
ACCO Brands International | Australia/N.Z.
Disaggregation of Revenue [Line Items]
Net sales		35.3	31.7	96.8	83.6
ACCO Brands International | Latin America
Disaggregation of Revenue [Line Items]
Net sales		30.8	27.5	72.2	90.8
ACCO Brands International | Asia-Pacific
Disaggregation of Revenue [Line Items]
Net sales		$ 12.0	$ 10.0	$ 39.6	$ 30.5

[1] (2) ACCO Brands EMEA is comprised largely of Europe, but also includes export sales to the Middle East and Africa.

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Information on Business Segments (Net Sales by Segment) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) segment	Sep. 30, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of business segments | segment			3
Net sales	$ 526.7	$ 444.1	$ 1,455.0	$ 1,195.1
ACCO Brands North America
Segment Reporting Information [Line Items]
Net sales	287.5	238.5	771.4	638.0
ACCO Brands EMEA
Segment Reporting Information [Line Items]
Net sales	161.1	136.4	475.0	352.2
ACCO Brands International
Segment Reporting Information [Line Items]
Net sales	$ 78.1	$ 69.2	$ 208.6	$ 204.9

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Information on Business Segments (Operating Income by Segment) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021		Sep. 30, 2020
Segment Reporting Information [Line Items]
Operating income	[1]	$ 38.6	$ 34.3	$ 87.4		$ 70.2
Change in fair value of contingent consideration		(4.9)	0.0	(16.5)		0.0
Interest expense		11.2	10.2	36.0		28.7
Interest income		(0.6)	(0.2)	(1.2)		(0.8)
Non-operating pension income		(2.3)	(1.4)	(5.6)		(4.4)
Other expense, net		0.1	0.1	4.0		0.8
Income before income tax		30.2	25.6	54.2		45.9
Operating Segment
Segment Reporting Information [Line Items]
Operating income		55.3	43.3	138.5	[1]	100.0	[1]
Corporate
Segment Reporting Information [Line Items]
Operating income		(11.8)	(9.0)	(34.6)	[1]	(29.8)	[1]
ACCO Brands North America | Operating Segment
Segment Reporting Information [Line Items]
Operating income		34.6	22.9	87.7	[1]	67.9	[1]
ACCO Brands EMEA | Operating Segment
Segment Reporting Information [Line Items]
Operating income		13.4	16.7	40.1	[1]	26.9	[1]
ACCO Brands International | Operating Segment
Segment Reporting Information [Line Items]
Operating income		$ 7.3	$ 3.7	$ 10.7	[1]	$ 5.2	[1]

[1] is defined as i) net sales; ii) less cost of products sold; iii) less selling, general and administrative expenses; iv) less amortization of intangibles; v) less restructuring charges; and vi) less change in the fair value of contingent consideration.

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Commitments and Contingencies Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Loss Contingencies [Line Items]
Income tax expense	$ 10.0		$ 6.8	$ 5.8	$ 13.7
Foreign Tax Authority | Secretariat of the Federal Revenue Bureau of Brazil
Loss Contingencies [Line Items]
Brazil Tax Credits		$ 9.1
Income tax expense		$ 3.1