Omnicom (OMC) 10-Q 16 Jul 24 2024 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2024	Jul. 10, 2024
Entity Listings [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Entity File Number	1-10551
Entity Registrant Name	OMNICOM GROUP INC.
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	13-1514814
Entity Address, Address Line One	280 Park Avenue
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017
City Area Code	212
Local Phone Number	415-3600
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
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		195,648,843
Entity Central Index Key	0000029989
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Document Transition Report	false
Amendment Flag	false
Common Stock, $0.15 Par Value
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, $0.15 Par Value
Trading Symbol	OMC
Security Exchange Name	NYSE
0.800% Senior Notes due 2027
Entity Listings [Line Items]
Title of 12(b) Security	0.800% Senior Notes due 2027
Trading Symbol	OMC/27
Security Exchange Name	NYSE
1.400% Senior Notes due 2031
Entity Listings [Line Items]
Title of 12(b) Security	1.400% Senior Notes due 2031
Trading Symbol	OMC/31
Security Exchange Name	NYSE
3.700% Senior Notes due 2032
Entity Listings [Line Items]
Title of 12(b) Security	3.700% Senior Notes due 2032
Trading Symbol	OMC/32
Security Exchange Name	NYSE
2.250% Senior Notes due 2033
Entity Listings [Line Items]
Title of 12(b) Security	2.250% Senior Notes due 2033
Trading Symbol	OMC/33
Security Exchange Name	NYSE

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 2,711.7	$ 4,432
Accounts receivable, net of allowance for doubtful accounts of $22.2 and $17.2	8,432.5	8,659.8
Work in process	1,800	1,342.5
Other current assets	1,028.2	949.9
Total Current Assets	13,972.4	15,384.2
Property and Equipment at cost, less accumulated depreciation of $1,133.5 and $1,150.4	859.9	874.9
Operating Lease Right-Of-Use Assets	1,015.5	1,046.4
Equity Method Investments	63.3	66.4
Goodwill	10,646.5	10,082.3
Intangible Assets, net of accumulated amortization of $857.3 and $863.6	522.7	366.9
Other Assets	243.9	223.5
TOTAL ASSETS	27,324.2	28,044.6
Current Liabilities:
Accounts payable	10,647.8	11,634
Customer advances	1,262.1	1,356.2
Current portion of debt	750.2	750.5
Short-term debt	15.1	10.9
Taxes payable	241.1	351.6
Other current liabilities	2,040.8	2,142.8
Total Current Liabilities	14,957.1	16,246
Long-Term Liabilities	881	887.7
Long-Term Liability - Operating Leases	806.2	853
Long-Term Debt	5,489.4	4,889.1
Deferred Tax Liabilities	533.8	529.1
Commitments and Contingent Liabilities (Note 13)
Temporary Equity - Redeemable Noncontrolling Interests	460.8	414.6
Shareholders’ Equity:
Preferred stock	0	0
Common stock	44.6	44.6
Additional paid-in capital	468.4	492
Retained earnings	10,941	10,571.5
Accumulated other comprehensive income (loss)	(1,445.5)	(1,337.6)
Treasury stock, at cost	(6,372.7)	(6,154.2)
Total Shareholders’ Equity	3,635.8	3,616.3
Noncontrolling interests	560.1	608.8
Total Equity	4,195.9	4,225.1
TOTAL LIABILITIES AND EQUITY	$ 27,324.2	$ 28,044.6

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Consolidated Balance Sheets (Parenthetical) [Abstract]
Allowance for doubtful accounts	$ 22.2	$ 17.2
Accumulated depreciation	1,133.5	1,150.4
Intangible assets, accumulated amortization	$ 857.3	$ 863.6

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
REVENUE	$ 3,853.8	$ 3,609.9	$ 7,484.3	$ 7,053.2
Salary and service costs	2,800.1	2,617.8	5,492.7	5,160.7
Occupancy and other costs	314.2	297.7	628.3	589.3
Real estate and other repositioning costs	57.8	72.3	57.8	191.5
Gain (Loss) on Disposition of Business	0	(78.8)	0	(78.8)
Cost of services	3,172.1	2,909	6,178.8	5,862.7
Selling, general and administrative expenses	111	99.1	196.3	188.3
Depreciation and amortization	60.4	51.1	120	105
Total Operating Expenses	3,343.5	3,059.2	6,495.1	6,156
OPERATING INCOME	510.3	550.7	989.2	897.2
Interest Expense	62.7	57.5	116.5	112.4
Interest Income	21	30.1	48	65.7
INCOME BEFORE INCOME TAXES AND INCOME FROM EQUITY METHOD INVESTMENTS	468.6	523.3	920.7	850.5
Income Tax Expense	123.7	141.2	239.7	224.6
Income From Equity Method Investments	3.3	1.1	4.2	1.2
NET INCOME	348.2	383.2	685.2	627.1
Net Income Attributed To Noncontrolling Interests	20.1	16.9	38.5	33.3
NET INCOME - OMNICOM GROUP INC.	$ 328.1	$ 366.3	$ 646.7	$ 593.8
Net Income Per Share - Omnicom Group Inc.:
Basic	$ 1.67	$ 1.84	$ 3.28	$ 2.96
Diluted	$ 1.65	$ 1.82	$ 3.24	$ 2.92
Weighted Average Shares (millions):
Basic	195.9	198.9	196.9	200.6
Diluted	198.5	201.6	199.3	203.1

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 348.2	$ 383.2	$ 685.2	$ 627.1
Cash flow hedge:
Amortization of loss included in interest expense	1.2	1.4	2.7	2.8
Income tax effect	(0.4)	(0.4)	(0.8)	(0.8)
Cash flow hedge, net of tax	0.8	1	1.9	2
Defined benefit pension plans and postemployment arrangements:
Amortization of prior service cost	1.2	1	2.4	2.1
Amortization of actuarial losses	0.2	0.2	0.5	0.4
Income tax effect	(0.5)	0.1	(2.3)	(0.8)
Defined benefit pension plans and postemployment arrangements, net of tax	0.9	1.3	0.6	1.7
Foreign currency translation adjustment	(31.9)	24.5	(118.2)	76.2
Other Comprehensive Income (Loss)	(30.2)	26.8	(115.7)	79.9
TOTAL COMPREHENSIVE INCOME	318	410	569.5	707
Comprehensive Income Attributed To Noncontrolling Interests	19.5	13.3	30.7	29.5
COMPREHENSIVE INCOME - OMNICOM GROUP INC.	$ 298.5	$ 396.7	$ 538.8	$ 677.5

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL:	RETAINED EARNINGS:	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS):	TREASURY STOCK:	SHAREHOLDERS' EQUITY	NONCONTROLLING INTERESTS:
Beginning Balance at Dec. 31, 2022			$ 571.1	$ 9,739.3	$ (1,437.9)	$ (5,665)		$ 524.3
NET INCOME	$ 627.1			593.8				33.3
Other comprehensive income (loss)	79.9				83.7			(3.8)
Dividends to noncontrolling interests								(32)
Net change in noncontrolling interests			(79.9)					(15.9)
Change in temporary equity			54.1
Common stock dividends declared				(281.7)
Share-based compensation			41.1
Stock issued, share-based compensation			(0.6)			34.5
Common stock repurchased						(543.6)
Ending Balance at Jun. 30, 2023	$ 3,659.4	$ 44.6	585.8	10,051.4	(1,354.2)	(6,174.1)	$ 3,153.5	505.9
Dividends Declared Per Common Share	$ 1.40
Beginning Balance at Mar. 31, 2023			580.7	9,825.5	(1,384.5)	(5,949.7)		514.6
NET INCOME	$ 383.2			366.3				16.9
Other comprehensive income (loss)	26.8				30.3			(3.6)
Dividends to noncontrolling interests								(19.5)
Net change in noncontrolling interests			(41.4)					(2.5)
Change in temporary equity			32.8
Common stock dividends declared				(140.4)
Share-based compensation			20.4
Stock issued, share-based compensation			(6.7)			14.1
Common stock repurchased						(238.5)
Ending Balance at Jun. 30, 2023	$ 3,659.4	$ 44.6	585.8	10,051.4	(1,354.2)	(6,174.1)	3,153.5	505.9
Dividends Declared Per Common Share	$ 0.70
COMMON STOCK - Shares		297.2
Beginning Balance at Dec. 31, 2023	$ 4,225.1		492	10,571.5	(1,337.6)	(6,154.2)		608.8
NET INCOME	685.2			646.7				38.5
Other comprehensive income (loss)	(115.7)				(107.9)			(7.8)
Dividends to noncontrolling interests								(34.2)
Net change in noncontrolling interests			9.5					(45.2)
Change in temporary equity			(50.1)
Common stock dividends declared				(277.2)
Share-based compensation			44.7
Stock issued, share-based compensation			(27.7)			33.5
Common stock repurchased						(252)
Ending Balance at Jun. 30, 2024	$ 4,195.9	$ 44.6	468.4	10,941	(1,445.5)	(6,372.7)	3,635.8	560.1
Dividends Declared Per Common Share	$ 1.40
Beginning Balance at Mar. 31, 2024			512	10,751.3	(1,415.9)	(6,322.5)		564.7
NET INCOME	$ 348.2			328.1				20.1
Other comprehensive income (loss)	(30.2)				(29.6)			(0.6)
Dividends to noncontrolling interests								(20.9)
Net change in noncontrolling interests			(15.1)					(3.2)
Change in temporary equity			(33.7)
Common stock dividends declared				(138.4)
Share-based compensation			22.6
Stock issued, share-based compensation			(17.4)			19.9
Common stock repurchased						(70.1)
Ending Balance at Jun. 30, 2024	$ 4,195.9	$ 44.6	$ 468.4	$ 10,941	$ (1,445.5)	$ (6,372.7)	$ 3,635.8	$ 560.1
Dividends Declared Per Common Share	$ 0.70
COMMON STOCK - Shares		297.2

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 685.2	$ 627.1
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization of right-of-use assets	67.9	66.4
Amortization of intangible assets	52.1	38.6
Share-based compensation	44.7	41.1
Real estate and other repositioning costs	57.8	191.5
Gain (Loss) on Disposition of Business	0	(78.8)
Other, net	(6.4)	(5.7)
Use of operating capital	(1,661.5)	(1,664.8)
Net Cash Used In Operating Activities	(760.2)	(784.6)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(62.3)	(40)
Acquisition of businesses and interests in affiliates, net of cash acquired	(790.3)	(6.1)
Other, net	(13.7)	178.7
Net Cash (Used In) Provided By Investing Activities	(866.3)	132.6
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from borrowings	645.9	0
Change in short-term debt	5.2	1.7
Dividends paid to common shareholders	(278.9)	(285.1)
Repurchases of common stock	(249.8)	(538.8)
Proceeds from stock plans	3.5	33.2
Acquisition of additional noncontrolling interests	(26.5)	(34.7)
Dividends paid to noncontrolling interest shareholders	(34.2)	(32)
Payment of contingent purchase price obligations	(12.6)	(14.3)
Other, net	(37.7)	(27)
Net Cash Provided By (Used In) Financing Activities	14.9	(897)
Effect of foreign exchange rate changes on cash and cash equivalents	(108.7)	1.3
Net Decrease in Cash and Cash Equivalents	(1,720.3)	(1,547.7)
Cash and Cash Equivalents at the Beginning of Period	4,432	4,281.8
Cash and Cash Equivalents at the End of Period	$ 2,711.7	$ 2,734.1

Presentation of Financial State

Presentation of Financial Statements	6 Months Ended
	Jun. 30, 2024
Presentation of Financial Statements [Abstract]
Presentation of Financial Statements	Presentation of Financial Statements The terms “Omnicom,” “the Company,” “we,” “our” and “us” each refer to Omnicom Group Inc. and its subsidiaries, unless the context indicates otherwise. The accompanying unaudited consolidated financial statements were prepared in accordance with generally accepted accounting principles in the United States, or U.S. GAAP or GAAP, for interim financial information and Article 10 of Regulation S-X of the Securities and Exchange Commission. Accordingly, certain information and footnote disclosures have been condensed or omitted. In our opinion, the accompanying unaudited consolidated financial statements reflect all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation, in all material respects, of the information contained herein. These unaudited consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2023, or 2023 10-K. Results for the interim periods are not necessarily indicative of results that may be expected for the year. Risks and Uncertainties Global economic challenges, including geopolitical events, international hostilities, acts of terrorism, public health crises, high and sustained inflation in countries that comprise our major markets, high interest rates, and labor and supply chain issues could cause economic uncertainty and volatility. The impact of these issues on our business will vary by geographic market and discipline. We monitor economic conditions closely, as well as client revenue levels and other factors. In response to reductions in revenue, we can take actions to align our cost structure with changes in client demand and manage our working capital. However, there can be no assurance as to the effectiveness of our efforts to mitigate any impact of the current and future adverse economic conditions, reductions in client revenue, changes in client creditworthiness and other developments.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2024
Revenue [Abstract]
Revenue	Revenue Nature of our services We provide an extensive range of advertising, marketing and corporate communications services through various client-centric networks that are organized to meet specific client objectives. Our networks, practice areas and agencies provide a comprehensive range of services in the following fundamental disciplines: Advertising & Media, Precision Marketing, Public Relations, Healthcare, Branding & Retail Commerce, Experiential, and Execution & Support. Advertising & Media includes creative services across digital and traditional media, strategic media planning and buying, performance media and data analytics services. Precision Marketing includes digital and direct marketing, digital transformation consulting, e-commerce operations, media execution, market intelligence and data and analytics. Public Relations services include corporate communications, crisis management, public affairs and media and media relations services. Healthcare includes corporate communications and advertising and media services to global healthcare and pharmaceutical companies. Branding & Retail Commerce services include brand and product consulting, strategy and research and retail marketing. Experiential marketing services include live and digital events and experience design and execution. Execution & Support includes field marketing, sales support, digital and physical merchandising, point-of-sale and product placement, as well as other specialized marketing and custom communications services. At the core of all our services is the ability to create or develop a client’s marketing or corporate communications message into content that can be delivered to a target audience across different communications mediums. Economic factors affecting our revenue Global economic conditions have a direct impact on our revenue. Adverse economic conditions pose a risk that our clients may reduce, postpone or cancel spending for our services, which would impact our revenue. Revenue by discipline: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Advertising & Media $ 2,046.8 $ 1,911.5 $ 3,953.6 $ 3,688.0 Precision Marketing 438.8 369.0 877.0 729.0 Public Relations 418.2 393.6 808.5 769.1 Healthcare 353.1 349.3 676.7 667.7 Branding & Retail Commerce 199.3 210.5 399.5 420.1 Experiential 186.1 164.4 346.0 312.2 Execution & Support 211.5 211.6 423.0 467.1 Revenue $ 3,853.8 $ 3,609.9 $ 7,484.3 $ 7,053.2 Revenue by geographic market: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Americas: North America $ 2,148.4 $ 1,978.8 $ 4,189.3 $ 3,905.6 Latin America 106.4 84.6 202.9 158.6 EMEA: Europe 1,101.9 1,045.6 2,107.7 1,997.5 Middle East and Africa 65.6 62.6 145.2 147.5 Asia-Pacific 431.5 438.3 839.2 844.0 Revenue $ 3,853.8 $ 3,609.9 $ 7,484.3 $ 7,053.2 The Americas is comprised of North America, which includes the United States, Canada and Puerto Rico, and Latin America, which includes South America and Mexico. EMEA is comprised of Europe, the Middle East and Africa. Asia-Pacific includes Australia, Greater China, India, Japan, Korea, New Zealand, Singapore and other Asian countries. Revenue in the United States for the three months ended June 30, 2024, and 2023 was $2,033.4 million and $1,850.6 million, respectively, and revenue in the United States for the six months ended June 30, 2024, and 2023 was $3,959.3 million and $3,662.8 million, respectively. Contract balances Contract balances include work in process and customer advances, which primarily consist of advance billings to customers in accordance with the terms of the client contracts, primarily for the reimbursement of third-party costs. June 30, 2024 December 31, 2023 June 30, 2023 Work in process: Media and production costs $ 843.9 $ 664.4 $ 797.1 Unbilled fees and costs and contract assets 956.1 678.1 840.9 Work in process $ 1,800.0 $ 1,342.5 $ 1,638.0 Customer advances $ 1,262.1 $ 1,356.2 $ 1,159.7 There were no work in process impairment charges recorded in the six months ended June 30, 2024 and 2023.

Net Income per Share

Net Income per Share	6 Months Ended
	Jun. 30, 2024
Net Income per Share [Abstract]
Net Income per Share	Net Income per Share Basic and diluted net income per share: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Net Income - Omnicom Group Inc. $ 328.1 $ 366.3 $ 646.7 $ 593.8 Weighted Average Shares (millions): Basic 195.9 198.9 196.9 200.6 Dilutive stock options and restricted shares 2.6 2.7 2.4 2.5 Diluted 198.5 201.6 199.3 203.1 Net Income per Share - Omnicom Group Inc.: Basic $1.67 $1.84 $3.28 $2.96 Diluted $1.65 $1.82 $3.24 $2.92

Business Combinations

Business Combinations	6 Months Ended
	Jun. 30, 2024
Business Combinations [Abstract]
Business Combinations	Business Combinations On January 2, 2024 , we acquired Flywheel Digital, the digital commerce business of Ascential plc, for a net cash purchase price of approximately $845 million . The financial statements of Flywheel Digital are included in our consolidated financial statements as of and for the period ended June 30, 2024. The acquisition of Flywheel Digital did not have a material effect on our financial position or results of operations in the three and six months ended June 30, 2024 and is not expected to do so for the remainder of the year. The principal tangible assets and liabilities acquired were net working capital, and the intangible assets acquired were primarily comprised of customer relationships, intellectual property, trade name and goodwill. We expect goodwill attributed to the U.S. operations of Flywheel Digital to be tax deductible. The allocation of the purchase price to the underlying assets is undergoing a formal valuation process and is substantially complete. As a result, as of June 30, 2024, we estimated amortizable intangible assets to be $182.6 million. We do not expect any changes arising from the completion of the purchase price allocation to be material to our financial position or results of operations.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Change in goodwill: Six Months Ended June 30, 2024 2023 January 1 $ 10,082.3 $ 9,734.3 Acquisitions 657.5 3.2 Noncontrolling interests in acquired businesses 10.7 — Contingent purchase price obligations of acquired businesses — 3.3 Dispositions (5.9) (118.6) Foreign currency translation (98.1) 81.2 June 30 $ 10,646.5 $ 9,703.4 The increase in goodwill during the six months ended June 30, 2024 is primarily attributable to the acquisition of Flywheel Digital. There were no goodwill impairment losses recorded in the six months ended June 30, 2024 and 2023, and there are no accumulated goodwill impairment losses. Intangible assets: June 30, 2024 December 31, 2023 Gross Accumulated Net Gross Accumulated Net Acquired intangible assets and internally developed strategic platform assets $ 1,088.6 $ (598.5) $ 490.1 $ 902.6 $ (572.9) $ 329.7 Other purchased and internally developed software 291.4 (258.8) 32.6 327.9 (290.7) 37.2 Total Intangible Assets $ 1,380.0 $ (857.3) $ 522.7 $ 1,230.5 $ (863.6) $ 366.9 Amortization of intangible assets: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Acquired intangible assets and internally developed strategic platform assets $ 21.5 $ 14.7 $ 43.0 $ 29.5 Other purchased and internally developed software 4.8 4.6 9.1 9.1 Amortization Expense $ 26.3 $ 19.3 $ 52.1 $ 38.6 We completed our annual goodwill impairment test as of May 1, 2024. The market assumptions used in our assessment reflected the current economic environment (see Note 1- Risks and Uncertainties

Debt

Debt	6 Months Ended
	Jun. 30, 2024
Debt [Abstract]
Debt	Debt Credit Facilities Our $2.5 billion unsecured multi-currency revolving credit facility, or Credit Facility terminates on June 2, 2028. The $600 million Delayed Draw Term Loan Agreement, or Term Loan Facility automatically terminated on July 15, 2024. We have the ability to issue up to $2 billion of U.S. Dollar denominated commercial paper and issue up to the equivalent of $500 million in British Pounds or Euro under a Euro commercial paper program. During the three months ended June 30, 2024, there were no drawings under the Credit Facility or the Term Loan Facility, and no commercial paper issuances. In addition, certain of our international subsidiaries have uncommitted credit lines that are guaranteed by Omnicom, aggregating $503.5 million. All of these facilities provide additional liquidity sources for operating capital and general corporate purposes. The Credit Facility has and Term Loan Facility had a financial covenant that requires us to maintain a Leverage Ratio of consolidated indebtedness to consolidated EBITDA (earnings before interest, taxes, depreciation, amortization and non-cash charges) of no more than 3.5 times for the most recently ended 12-month period. At June 30, 2024, we were in compliance with this covenant as our Leverage Ratio was 2.6 times. The Credit Facility does not limit our ability to declare or pay dividends or repurchase our common stock. Short-Term Debt Short-term debt of $15.1 million and $10.9 million at June 30, 2024 and December 31, 2023, respectively, represented bank overdrafts and short-term borrowings primarily of our international subsidiaries. Due to the short-term nature of this debt, carrying value approximates fair value. Long-Term Debt Long-term debt: June 30, 2024 December 31, 2023 3.65% Senior Notes due 2024 $ 750.0 $ 750.0 3.60% Senior Notes due 2026 1,400.0 1,400.0 €500 million 0.80% Senior Notes due 2027 535.2 553.0 2.45% Senior Notes due 2030 600.0 600.0 4.20% Senior Notes due 2030 600.0 600.0 €500 million 1.40% Senior Notes due 2031 535.2 553.0 2.60% Senior Notes due 2031 800.0 800.0 €600 million 3.70% Senior Notes due 2032 642.2 — £325 million 2.25% Senior Notes due 2033 410.8 413.9 Long-Term Debt, Gross 6,273.4 5,669.9 Unamortized discount (8.4) (7.8) Unamortized debt issuance costs (24.8) (22.3) Unamortized deferred loss from settlement of interest rate swaps, net (0.6) (0.2) Current portion (750.2) (750.5) Long-Term Debt $ 5,489.4 $ 4,889.1 On March 6, 2024, Omnicom Finance Holdings plc, or OFH, a U.K.-based wholly owned subsidiary of Omnicom, issued €600 million 3.70% Senior Notes due 2032, or 2032 Notes. The net proceeds from the issuance, after deducting the underwriting discount and offering expenses, were $643.1 million. Our 2.45% Senior Notes due 2030, 4.20% Senior Notes due 2030 and 2.60% Senior Notes due 2031 are senior unsecured obligations of Omnicom that rank equal in right of payment with all existing and future unsecured senior indebtedness. Omnicom and its wholly owned finance subsidiary, Omnicom Capital Inc., or OCI, are co-obligors under the 3.65% Senior Notes due 2024 and the 3.60% Senior Notes due 2026. These notes are a joint and several liability of Omnicom and OCI, and Omnicom unconditionally guarantees OCI’s obligations with respect to the notes. OCI provides funding for our operations by incurring debt and lending the proceeds to our operating subsidiaries. OCI’s assets primarily consist of cash and cash equivalents and intercompany loans made to our operating subsidiaries, and the related interest receivable. There are no restrictions on the ability of OCI or Omnicom to obtain funds from our subsidiaries through dividends, loans, or advances. Such notes are senior unsecured obligations that rank equal in right of payment with all existing and future unsecured senior indebtedness. Omnicom and OCI have, jointly and severally, fully, and unconditionally guaranteed the obligations of OFH with respect to the €500 million 0.80% Senior Notes due 2027 and the €500 million 1.40% Senior Notes due 2031, and Omnicom has fully and unconditionally guaranteed the obligations of OFH with respect to the €600 million 3.70% 2032 Notes, collectively the Euro Notes. OFH’s assets consist of its investments in several wholly owned finance companies that function as treasury centers, providing funding for various operating companies in Europe, Australia, and other countries in the Asia-Pacific region. The finance companies’ assets consist of cash and cash equivalents and intercompany loans that they make or have made to the operating companies in their respective regions and the related interest receivable. There are no restrictions on the ability of Omnicom, OCI or OFH to obtain funds from their subsidiaries through dividends, loans, or advances. The Euro Notes and the related guarantees are senior unsecured obligations that rank equal in right of payment with all existing and future unsecured senior indebtedness of OFH and each of Omnicom and OCI, as applicable. Omnicom has fully and unconditionally guaranteed the obligations of Omnicom Capital Holdings plc, or OCH, a U.K.-based wholly owned subsidiary of Omnicom, with respect to the £325 million 2.25% Senior Notes due 2033, or the Sterling Notes. OCH’s assets consist of its investments in several wholly owned finance companies that function as treasury centers, providing funding for various operating companies in EMEA, Australia, and other countries in the Asia-Pacific region. The finance companies’ assets consist of cash and cash equivalents and intercompany loans that they make or have made to the operating companies in their respective regions and the related interest receivable. There are no restrictions on the ability of Omnicom or OCH to obtain funds from their subsidiaries through dividends, loans, or advances. The Sterling Notes and the related guarantee are senior unsecured obligations that rank equal in right of payment with all existing and future unsecured senior indebtedness of OCH and Omnicom, respectively.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting Our branded agency networks operate in the advertising, marketing and corporate communications services industry, and are organized into agency networks, virtual client networks, regional reporting units and operating groups or practice areas. Our networks, virtual client networks and agencies increasingly share clients and provide clients with integrated services. The main economic components of each agency are employee compensation and related costs, direct service costs and occupancy and other costs, which include rent and occupancy costs, technology costs and other overhead expenses. Therefore, given these similarities, we aggregate our six operating segments, which are our agency networks, into one reporting segment. The agency networks' regional reporting units comprise three principal regions: the Americas, EMEA and Asia-Pacific. The regional reporting units monitor the performance of and are responsible for the agencies in their region. Agencies within the regional reporting units serve similar clients in similar industries and, in many cases, the same clients, and have similar economic characteristics. Revenue and long-lived assets and goodwill by geographic region: Americas EMEA Asia-Pacific June 30, 2024 Revenue - Three months ended $ 2,254.8 $ 1,167.5 $ 431.5 Revenue - Six months ended $ 4,392.2 $ 2,252.9 $ 839.2 Long-lived assets and goodwill $ 8,038.9 $ 3,773.3 $ 709.7 June 30, 2023 Revenue - Three months ended $ 2,063.4 $ 1,108.2 $ 438.3 Revenue - Six months ended $ 4,064.2 $ 2,145.0 $ 844.0 Long-lived assets and goodwill $ 7,521.9 $ 3,431.1 $ 706.5

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2024
Income Taxes [Abstract]
Income Taxes	Income Taxes Our effective tax rate for the six months ended June 30, 2024 decreased period-over-period to 26.0% from 26.4%. The effective tax rate for six months ended June 30, 2024 includes the favorable impact from the resolution of certain non-U.S. tax positions of $7.5 million. The effective tax rate for the six months ended June 30, 2023 includes an increase of approximately $10.7 million in income tax expense related to a lower tax benefit in certain jurisdictions for the real estate and other repositioning costs in the period and an increase in the U.K. statutory tax rate, partially offset by approximately $10.0 million of favorable impacts from the resolution of certain non-U.S. tax positions. Numerous foreign jurisdictions have enacted or are in the process of enacting legislation to adopt a minimum effective tax rate described in the Global Anti-Base Erosion, or Pillar Two, model rules issued by the Organization for Economic Co-operation and Development, or OECD. Under such rules, a minimum effective tax rate of 15% would apply to multinational companies with consolidated revenue above €750 million. Under the Pillar Two rules, a company would be required to determine a combined effective tax rate for all entities located in a jurisdiction. If the jurisdictional effective tax rate determined under the Pillar Two rules is less than 15%, a top-up tax will be due to bring the jurisdictional effective tax rate up to 15%. We are continuing to monitor the pending implementation of Pillar Two by individual countries and the potential effects of Pillar Two on our business. The provisions effective in 2024 do not have a materially adverse impact on our results of operations, financial position, or cash flows. At June 30, 2024, our unrecognized tax benefits were $176.7 million. Of this amount, approximately $170.3 million would affect our effective tax rate upon resolution of the uncertain tax positions.

Pension and Other Postemploymen

Pension and Other Postemployment Benefits	6 Months Ended
	Jun. 30, 2024
Pension and Other Postemployment Benefits [Abstract]
Pension and Other Postemployment Benefits	Pension and Other Postemployment Benefits Net periodic benefit expense: Defined Benefit Pension Plans Postemployment Arrangements Six Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Service cost $ 1.1 $ 1.7 $ 1.5 $ 1.7 Interest cost 2.9 5.1 3.0 2.8 Expected return on plan assets (0.4) (0.5) — — Amortization of prior service cost 0.2 0.2 2.2 1.9 Amortization of actuarial losses 0.4 0.4 0.1 — Total net periodic benefit expense $ 4.2 $ 6.9 $ 6.8 $ 6.4 In the six months ended June 30, 2024 and 2023, we contributed $0.1 million and $0.3 million to our defined benefit pension plans, respectively.

Real Estate and Other Repositio

Real Estate and Other Repositioning Costs	6 Months Ended
	Jun. 30, 2024
Real Estate and Other Repositioning Costs [Abstract]
Real Estate and Other Repositioning Costs	Real Estate and Other Repositioning Costs In connection with our strategic initiatives, for the three and six months ended June 30, 2024, operating expenses included $57.8 million ($42.9 million after-tax) in the second quarter of 2024 primarily reflecting severance actions related to ongoing efficiency initiatives including strategic agency consolidation in our smaller international markets and the launch of our centralized production strategy. There were no significant real estate repositioning charges during the three and six months ended June 30, 2024.

Disposition of Subsidiaries

Disposition of Subsidiaries	6 Months Ended
	Jun. 30, 2024
Disposition of Subsidiaries [Abstract]
Disposition of Subsidiaries	Disposition of Subsidiaries In April 2023, we disposed of certain research businesses included in our Execution & Support discipline. As a result, for the three and six months ended June 30, 2023, we recorded a pretax gain of $78.8 million. The disposition did not have a material impact on our ongoing results of operations or financial position.

Supplemental Cash Flow Data

Supplemental Cash Flow Data	6 Months Ended
	Jun. 30, 2024
Supplemental Cash Flow Data [Abstract]
Supplemental Cash Flow Data	Supplemental Cash Flow Data Change in operating capital: Six Months Ended June 30, 2024 2023 (Increase) decrease in accounts receivable $ 340.2 $ 584.6 (Increase) decrease in work in process and other current assets (474.7) (394.3) Increase (decrease) in accounts payable (985.8) (1,016.1) Increase (decrease) in customer advances, taxes payable and other current liabilities (489.6) (786.3) Change in other assets and liabilities, net (51.6) (52.7) Increase (decrease) in operating capital $ (1,661.5) $ (1,664.8) Supplemental financial information: Income taxes paid $ 306.4 $ 289.1 Interest paid $ 70.7 $ 75.2 Non-cash increase in lease liabilities: Operating leases $ 93.6 $ 77.4 Finance leases $ 25.0 $ 25.6

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 30, 2024
Commitments and Contingent Liabilities [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities In the ordinary course of business, we are involved in various legal proceedings. We do not presently expect that such proceedings will have a material adverse effect on our results of operations or financial position.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss), net of income taxes: Cash Defined Benefit Pension Plans and Postemployment Arrangements Foreign Total Six Months Ended June 30, 2024 January 1 $ (8.1) $ (42.7) $ (1,286.8) $ (1,337.6) Other comprehensive income (loss) before reclassifications — — (110.4) (110.4) Reclassification from accumulated other comprehensive income (loss) 1.9 0.6 — 2.5 June 30 $ (6.2) $ (42.1) $ (1,397.2) $ (1,445.5) Six Months Ended June 30, 2023 January 1 $ (12.1) $ (41.3) $ (1,384.5) $ (1,437.9) Other comprehensive income (loss) before reclassifications — — 80.0 80.0 Reclassification from accumulated other comprehensive 2.0 1.7 — 3.7 June 30 $ (10.1) $ (39.6) $ (1,304.5) $ (1,354.2)

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2024
Fair Value [Abstract]
Fair Value	Fair Value Financial assets and liabilities are recorded at fair value based on the following: • 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; unadjusted quoted prices for identical assets or liabilities in markets that are not active; and model-derived valuations with observable inputs. • Level 3: Unobservable inputs for the asset or liability. Financial assets and liabilities measured at fair value on a recurring basis: June 30, 2024 December 31, 2023 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Cash and cash equivalents $ 2,711.7 $ 2,711.7 $ 4,432.0 $ 4,432.0 Marketable equity securities 0.8 0.8 0.9 0.9 Cross currency swaps - net $ 11.5 11.5 $ — — Liabilities: Cross currency swaps - net $ — $ — $ 6.6 $ 6.6 Contingent purchase price obligations $ 249.8 249.8 $ 229.5 229.5 Changes in contingent purchase price obligations: Six Months Ended June 30, 2024 2023 January 1 $ 229.5 $ 115.0 Acquisitions 27.4 62.9 Revaluation and interest 6.2 (6.2) Payments (12.6) (14.3) Foreign currency translation (0.7) 0.6 June 30 $ 249.8 $ 158.0 Carrying amount and fair value of our financial assets and liabilities: June 30, 2024 December 31, 2023 Carrying Fair Carrying Fair Assets: Cash and cash equivalents $ 2,711.7 $ 2,711.7 $ 4,432.0 $ 4,432.0 Marketable equity securities 0.8 0.8 0.9 0.9 Cross currency swaps - net investment hedge 11.5 11.5 — — Non-marketable equity securities 12.5 12.5 6.7 6.7 Liabilities: Short-term debt $ 15.1 $ 15.1 $ 10.9 $ 10.9 Cross currency swaps - net investment hedge — — 6.6 6.6 Contingent purchase price obligations 249.8 249.8 229.5 229.5 Long-term debt 6,239.6 5,778.2 5,639.6 5,237.8 The estimated fair values of the cross-currency swaps are determined using model-derived valuations, taking into consideration foreign currency rates, interest rates, and counterparty credit risk. The estimated fair value of the contingent purchase price obligations is calculated in accordance with the terms of each acquisition agreement and is discounted. The fair value of long-term debt is based on quoted market prices.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events We have evaluated events subsequent to the balance sheet date and determined that there have not been any events that have occurred that would require additional adjustments to, or disclosures in, these consolidated financial statements.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Contract Balances	June 30, 2024 December 31, 2023 June 30, 2023 Work in process: Media and production costs $ 843.9 $ 664.4 $ 797.1 Unbilled fees and costs and contract assets 956.1 678.1 840.9 Work in process $ 1,800.0 $ 1,342.5 $ 1,638.0 Customer advances $ 1,262.1 $ 1,356.2 $ 1,159.7
Geographic Markets [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	Revenue by geographic market: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Americas: North America $ 2,148.4 $ 1,978.8 $ 4,189.3 $ 3,905.6 Latin America 106.4 84.6 202.9 158.6 EMEA: Europe 1,101.9 1,045.6 2,107.7 1,997.5 Middle East and Africa 65.6 62.6 145.2 147.5 Asia-Pacific 431.5 438.3 839.2 844.0 Revenue $ 3,853.8 $ 3,609.9 $ 7,484.3 $ 7,053.2
Discipline [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	Revenue by discipline: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Advertising & Media $ 2,046.8 $ 1,911.5 $ 3,953.6 $ 3,688.0 Precision Marketing 438.8 369.0 877.0 729.0 Public Relations 418.2 393.6 808.5 769.1 Healthcare 353.1 349.3 676.7 667.7 Branding & Retail Commerce 199.3 210.5 399.5 420.1 Experiential 186.1 164.4 346.0 312.2 Execution & Support 211.5 211.6 423.0 467.1 Revenue $ 3,853.8 $ 3,609.9 $ 7,484.3 $ 7,053.2

Net Income per Share (Tables)

Net Income per Share (Tables)	6 Months Ended
	Jun. 30, 2024
Net Income per Share [Abstract]
Basic and Diluted Net Income per Share	Basic and diluted net income per share: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Net Income - Omnicom Group Inc. $ 328.1 $ 366.3 $ 646.7 $ 593.8 Weighted Average Shares (millions): Basic 195.9 198.9 196.9 200.6 Dilutive stock options and restricted shares 2.6 2.7 2.4 2.5 Diluted 198.5 201.6 199.3 203.1 Net Income per Share - Omnicom Group Inc.: Basic $1.67 $1.84 $3.28 $2.96 Diluted $1.65 $1.82 $3.24 $2.92

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Change in Goodwill	Change in goodwill: Six Months Ended June 30, 2024 2023 January 1 $ 10,082.3 $ 9,734.3 Acquisitions 657.5 3.2 Noncontrolling interests in acquired businesses 10.7 — Contingent purchase price obligations of acquired businesses — 3.3 Dispositions (5.9) (118.6) Foreign currency translation (98.1) 81.2 June 30 $ 10,646.5 $ 9,703.4
Intangible Assets	Intangible assets: June 30, 2024 December 31, 2023 Gross Accumulated Net Gross Accumulated Net Acquired intangible assets and internally developed strategic platform assets $ 1,088.6 $ (598.5) $ 490.1 $ 902.6 $ (572.9) $ 329.7 Other purchased and internally developed software 291.4 (258.8) 32.6 327.9 (290.7) 37.2 Total Intangible Assets $ 1,380.0 $ (857.3) $ 522.7 $ 1,230.5 $ (863.6) $ 366.9
Amortization of Intangible Assets	Amortization of intangible assets: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Acquired intangible assets and internally developed strategic platform assets $ 21.5 $ 14.7 $ 43.0 $ 29.5 Other purchased and internally developed software 4.8 4.6 9.1 9.1 Amortization Expense $ 26.3 $ 19.3 $ 52.1 $ 38.6

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2024
Debt [Abstract]
Long-Term Debt	Long-term debt: June 30, 2024 December 31, 2023 3.65% Senior Notes due 2024 $ 750.0 $ 750.0 3.60% Senior Notes due 2026 1,400.0 1,400.0 €500 million 0.80% Senior Notes due 2027 535.2 553.0 2.45% Senior Notes due 2030 600.0 600.0 4.20% Senior Notes due 2030 600.0 600.0 €500 million 1.40% Senior Notes due 2031 535.2 553.0 2.60% Senior Notes due 2031 800.0 800.0 €600 million 3.70% Senior Notes due 2032 642.2 — £325 million 2.25% Senior Notes due 2033 410.8 413.9 Long-Term Debt, Gross 6,273.4 5,669.9 Unamortized discount (8.4) (7.8) Unamortized debt issuance costs (24.8) (22.3) Unamortized deferred loss from settlement of interest rate swaps, net (0.6) (0.2) Current portion (750.2) (750.5) Long-Term Debt $ 5,489.4 $ 4,889.1

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Revenue and Long-Lived Assets and Goodwill by Geographic Region	Revenue and long-lived assets and goodwill by geographic region: Americas EMEA Asia-Pacific June 30, 2024 Revenue - Three months ended $ 2,254.8 $ 1,167.5 $ 431.5 Revenue - Six months ended $ 4,392.2 $ 2,252.9 $ 839.2 Long-lived assets and goodwill $ 8,038.9 $ 3,773.3 $ 709.7 June 30, 2023 Revenue - Three months ended $ 2,063.4 $ 1,108.2 $ 438.3 Revenue - Six months ended $ 4,064.2 $ 2,145.0 $ 844.0 Long-lived assets and goodwill $ 7,521.9 $ 3,431.1 $ 706.5

Pension and Other Postemploym_2

Pension and Other Postemployment Benefits (Tables)	6 Months Ended
	Jun. 30, 2024
Pension and Other Postemployment Benefits [Abstract]
Net Periodic Benefit Expense	Net periodic benefit expense: Defined Benefit Pension Plans Postemployment Arrangements Six Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Service cost $ 1.1 $ 1.7 $ 1.5 $ 1.7 Interest cost 2.9 5.1 3.0 2.8 Expected return on plan assets (0.4) (0.5) — — Amortization of prior service cost 0.2 0.2 2.2 1.9 Amortization of actuarial losses 0.4 0.4 0.1 — Total net periodic benefit expense $ 4.2 $ 6.9 $ 6.8 $ 6.4

Supplemental Cash Flow Data (Ta

Supplemental Cash Flow Data (Tables)	6 Months Ended
	Jun. 30, 2024
Supplemental Cash Flow Data [Abstract]
Change in Operating Capital	Change in operating capital: Six Months Ended June 30, 2024 2023 (Increase) decrease in accounts receivable $ 340.2 $ 584.6 (Increase) decrease in work in process and other current assets (474.7) (394.3) Increase (decrease) in accounts payable (985.8) (1,016.1) Increase (decrease) in customer advances, taxes payable and other current liabilities (489.6) (786.3) Change in other assets and liabilities, net (51.6) (52.7) Increase (decrease) in operating capital $ (1,661.5) $ (1,664.8) Supplemental financial information: Income taxes paid $ 306.4 $ 289.1 Interest paid $ 70.7 $ 75.2
Non-Cash Increase in Lease Liabilities	Non-cash increase in lease liabilities: Operating leases $ 93.6 $ 77.4 Finance leases $ 25.0 $ 25.6

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss), net of income taxes: Cash Defined Benefit Pension Plans and Postemployment Arrangements Foreign Total Six Months Ended June 30, 2024 January 1 $ (8.1) $ (42.7) $ (1,286.8) $ (1,337.6) Other comprehensive income (loss) before reclassifications — — (110.4) (110.4) Reclassification from accumulated other comprehensive income (loss) 1.9 0.6 — 2.5 June 30 $ (6.2) $ (42.1) $ (1,397.2) $ (1,445.5) Six Months Ended June 30, 2023 January 1 $ (12.1) $ (41.3) $ (1,384.5) $ (1,437.9) Other comprehensive income (loss) before reclassifications — — 80.0 80.0 Reclassification from accumulated other comprehensive 2.0 1.7 — 3.7 June 30 $ (10.1) $ (39.6) $ (1,304.5) $ (1,354.2)

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2024
Fair Value [Abstract]
Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	Financial assets and liabilities measured at fair value on a recurring basis: June 30, 2024 December 31, 2023 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Cash and cash equivalents $ 2,711.7 $ 2,711.7 $ 4,432.0 $ 4,432.0 Marketable equity securities 0.8 0.8 0.9 0.9 Cross currency swaps - net $ 11.5 11.5 $ — — Liabilities: Cross currency swaps - net $ — $ — $ 6.6 $ 6.6 Contingent purchase price obligations $ 249.8 249.8 $ 229.5 229.5
Changes in Contingent Purchase Price Obligations	Changes in contingent purchase price obligations: Six Months Ended June 30, 2024 2023 January 1 $ 229.5 $ 115.0 Acquisitions 27.4 62.9 Revaluation and interest 6.2 (6.2) Payments (12.6) (14.3) Foreign currency translation (0.7) 0.6 June 30 $ 249.8 $ 158.0
Carrying Amount and Fair Value of Financial Assets and Liabilities	Carrying amount and fair value of our financial assets and liabilities: June 30, 2024 December 31, 2023 Carrying Fair Carrying Fair Assets: Cash and cash equivalents $ 2,711.7 $ 2,711.7 $ 4,432.0 $ 4,432.0 Marketable equity securities 0.8 0.8 0.9 0.9 Cross currency swaps - net investment hedge 11.5 11.5 — — Non-marketable equity securities 12.5 12.5 6.7 6.7 Liabilities: Short-term debt $ 15.1 $ 15.1 $ 10.9 $ 10.9 Cross currency swaps - net investment hedge — — 6.6 6.6 Contingent purchase price obligations 249.8 249.8 229.5 229.5 Long-term debt 6,239.6 5,778.2 5,639.6 5,237.8

Revenue (Details)

Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
REVENUE	$ 3,853.8	$ 3,609.9	$ 7,484.3	$ 7,053.2
Media and production costs	843.9	797.1	843.9	797.1	$ 664.4
Unbilled fees and costs and contract assets	956.1	840.9	956.1	840.9	678.1
Contract assets:	1,800	1,638	1,800	1,638	1,342.5
Customer advances	1,262.1	1,159.7	1,262.1	1,159.7	$ 1,356.2
North America
Disaggregation of Revenue [Line Items]
REVENUE	2,148.4	1,978.8	4,189.3	3,905.6
UNITED STATES
Disaggregation of Revenue [Line Items]
REVENUE	2,033.4	1,850.6	3,959.3	3,662.8
Latin America
Disaggregation of Revenue [Line Items]
REVENUE	106.4	84.6	202.9	158.6
Europe
Disaggregation of Revenue [Line Items]
REVENUE	1,101.9	1,045.6	2,107.7	1,997.5
Middle East and Africa
Disaggregation of Revenue [Line Items]
REVENUE	65.6	62.6	145.2	147.5
Asia-Pacific
Disaggregation of Revenue [Line Items]
REVENUE	431.5	438.3	839.2	844
Advertising & Media
Disaggregation of Revenue [Line Items]
REVENUE	2,046.8	1,911.5	3,953.6	3,688
Precision Marketing
Disaggregation of Revenue [Line Items]
REVENUE	438.8	369	877	729
Public Relations
Disaggregation of Revenue [Line Items]
REVENUE	418.2	393.6	808.5	769.1
Healthcare
Disaggregation of Revenue [Line Items]
REVENUE	353.1	349.3	676.7	667.7
Branding & Retail Commerce
Disaggregation of Revenue [Line Items]
REVENUE	199.3	210.5	399.5	420.1
Experiential
Disaggregation of Revenue [Line Items]
REVENUE	186.1	164.4	346	312.2
Execution & Support
Disaggregation of Revenue [Line Items]
REVENUE	$ 211.5	$ 211.6	$ 423	$ 467.1

Net Income per Share (Details)

Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net Income per Share [Abstract]
Net Income - Omnicom Group Inc.	$ 328.1	$ 366.3	$ 646.7	$ 593.8
Weighted Average Shares (millions):
Basic	195.9	198.9	196.9	200.6
Dilutive stock options and restricted shares	2.6	2.7	2.4	2.5
Diluted	198.5	201.6	199.3	203.1
Net Income per Share - Omnicom Group Inc.:
Basic	$ 1.67	$ 1.84	$ 3.28	$ 2.96
Diluted	$ 1.65	$ 1.82	$ 3.24	$ 2.92

Business Combinations (Details)

Business Combinations (Details) - Flywheel Digital $ in Millions	Jan. 02, 2024 USD ($)
Business Acquisition [Line Items]
Acquisition of Flywheel Digital, net cash purchase price	$ 845
Acquisition of Flywheel Digital, amortizable intangible assets	$ 182.6

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Changes in Goodwill
Goodwill, January 1			$ 10,082.3	$ 9,734.3
Goodwill, Acquisitions			657.5	3.2
Goodwill, Noncontrolling interests in acquired businesses			10.7	0
Goodwill, Contingent purchase price obligations of acquired businesses			0	3.3
Goodwill, Dispositions			(5.9)	(118.6)
Goodwill, Foreign currency translation			(98.1)	81.2
Goodwill, June 30	$ 10,646.5	$ 9,703.4	10,646.5	9,703.4
Goodwill, impairment losses			0	0
Goodwill, accumulated impairment losses	0		0
Intangible assets:
Intangible assets, Gross Carrying Value	1,380		1,380		$ 1,230.5
Intangible assets, Accumulated Amortization	(857.3)		(857.3)		(863.6)
Intangible assets, Net Carrying Value	522.7		522.7		366.9
Amortization of intangible assets	26.3	19.3	52.1	38.6
Acquired intangible assets and internally developed strategic platform assets
Intangible assets:
Intangible assets, Gross Carrying Value	1,088.6		1,088.6		902.6
Intangible assets, Accumulated Amortization	(598.5)		(598.5)		(572.9)
Intangible assets, Net Carrying Value	490.1		490.1		329.7
Amortization of intangible assets	21.5	14.7	43	29.5
Other purchased and internally developed software
Intangible assets:
Intangible assets, Gross Carrying Value	291.4		291.4		327.9
Intangible assets, Accumulated Amortization	(258.8)		(258.8)		(290.7)
Intangible assets, Net Carrying Value	32.6		32.6		$ 37.2
Amortization of intangible assets	$ 4.8	$ 4.6	$ 9.1	$ 9.1

Debt (Details)

Debt (Details) € in Millions, £ in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 EUR (€)	Jun. 30, 2024 GBP (£)	Jan. 03, 2024 USD ($)	Dec. 31, 2023 USD ($)
Short-Term Borrowings [Abstract]
Short-term debt	$ 15.1					$ 10.9
Long-Term Debt [Abstract]
Long-Term Debt, Gross	6,273.4					5,669.9
Unamortized discount	(8.4)					(7.8)
Unamortized debt issuance costs	(24.8)					(22.3)
Unamortized deferred loss from settlement of interest rate swaps, net	(0.6)					(0.2)
Long-term debt, current portion	(750.2)					(750.5)
Long-Term Debt	5,489.4					4,889.1
Proceeds from borrowings	645.9	$ 0
Credit Facility [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	$ 2,500
Credit Facilities, expiration date	Jun. 02, 2028
Credit Facilities, amount outstanding	$ 0
Credit Facilities, covenant terms	The Credit Facility has and Term Loan Facility had a financial covenant that requires us to maintain a Leverage Ratio of consolidated indebtedness to consolidated EBITDA (earnings before interest, taxes, depreciation, amortization and non-cash charges) of no more than 3.5 times for the most recently ended 12-month period.
Credit Facilities, covenant compliance	At June 30, 2024, we were in compliance with this covenant as our Leverage Ratio was 2.6 times.
Delayed Draw Term Loan Agreement
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	$ 600				$ 600
Credit Facilities, expiration date	Jul. 15, 2024
Credit Facilities, amount outstanding	$ 0
Credit Facilities, covenant terms	The Credit Facility has and Term Loan Facility had a financial covenant that requires us to maintain a Leverage Ratio of consolidated indebtedness to consolidated EBITDA (earnings before interest, taxes, depreciation, amortization and non-cash charges) of no more than 3.5 times for the most recently ended 12-month period.
Credit Facilities, covenant compliance	At June 30, 2024, we were in compliance with this covenant as our Leverage Ratio was 2.6 times.
Uncommitted credit lines [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	$ 503.5
Commercial Paper [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	2,000
Credit Facilities, amount outstanding	0
Euro Commercial Paper [Member]
Credit Facilities [Abstract]
Credit Facilities, maximum borrowing capacity	500
Credit Facilities, amount outstanding	0
3.65% Senior Notes due 2024
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 750					750
Long-term debt, interest rate	3.65%		3.65%	3.65%
3.60% Senior Notes due 2026
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 1,400					1,400
Long-term debt, interest rate	3.60%		3.60%	3.60%
€500 million 0.80% Senior Notes due 2027
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 535.2		€ 500			553
Long-term debt, interest rate	0.80%		0.80%	0.80%
2.45% Senior Notes due 2030
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 600					600
Long-term debt, interest rate	2.45%		2.45%	2.45%
4.20% Senior Notes due 2030
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 600					600
Long-term debt, interest rate	4.20%		4.20%	4.20%
€500 million 1.40% Senior Notes due 2031
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 535.2		€ 500			553
Long-term debt, interest rate	1.40%		1.40%	1.40%
2.60% Senior Notes due 2031
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 800					800
Long-term debt, interest rate	2.60%		2.60%	2.60%
€600 million $3.70% Senior Notes due 2032
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 642.2			£ 600		0
Long-term debt, interest rate	3.70%		3.70%	3.70%
Proceeds from borrowings	$ 643.1
£325 million 2.25% Senior Notes due 2033
Long-Term Debt [Abstract]
Long-Term Debt, Gross	$ 410.8			£ 325		$ 413.9
Long-term debt, interest rate	2.25%		2.25%	2.25%

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue and Long-Lived Assets and Goodwill by Geographic Region
REVENUE	$ 3,853.8	$ 3,609.9	$ 7,484.3	$ 7,053.2
Americas
Revenue and Long-Lived Assets and Goodwill by Geographic Region
REVENUE	2,254.8	2,063.4	4,392.2	4,064.2
Long-lived assets and goodwill	8,038.9	7,521.9	8,038.9	7,521.9
EMEA
Revenue and Long-Lived Assets and Goodwill by Geographic Region
REVENUE	1,167.5	1,108.2	2,252.9	2,145
Long-lived assets and goodwill	3,773.3	3,431.1	3,773.3	3,431.1
Asia-Pacific
Revenue and Long-Lived Assets and Goodwill by Geographic Region
REVENUE	431.5	438.3	839.2	844
Long-lived assets and goodwill	$ 709.7	$ 706.5	$ 709.7	$ 706.5

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Income Taxes [Abstract]
Effective tax rate	26%	26.40%
Income taxes, impact of previously unrecognized tax benefits	$ 7.5	$ 10
Income taxes, impact of real estate repositioning costs and increase in U.K. statutory tax rate		$ 10.7
Unrecognized tax benefits	176.7
Unrecognized tax benefits that would impact effective tax rate	$ 170.3

Pension and Other Postemploym_3

Pension and Other Postemployment Benefits (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Defined Benefit Pension Plans [Member]
Components of Net Periodic Benefit Expense
Service cost	$ 1.1	$ 1.7
Interest cost	2.9	5.1
Expected return on plan assets	(0.4)	(0.5)
Amortization of prior service cost	0.2	0.2
Amortization of actuarial losses	0.4	0.4
Net periodic benefit expense	4.2	6.9
Employer contributions	0.1	0.3
Postemployment Arrangements [Member]
Components of Net Periodic Benefit Expense
Service cost	1.5	1.7
Interest cost	3	2.8
Expected return on plan assets	0	0
Amortization of prior service cost	2.2	1.9
Amortization of actuarial losses	0.1	0
Net periodic benefit expense	$ 6.8	$ 6.4

Real Estate and Other Reposit_2

Real Estate and Other Repositioning Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Real Estate and Other Repositioning Costs [Abstract]
Real estate and other repositioning costs	$ 57.8	$ 72.3	$ 57.8	$ 191.5
Real estate and other repositioning costs, after-tax	$ 42.9	$ 54.5	$ 42.9	$ 145.5

Disposition of Subsidiaries (De

Disposition of Subsidiaries (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disposition of Subsidiaries [Abstract]
Gain on disposition of subsidiary	$ 0	$ 78.8	$ 0	$ 78.8

Supplemental Cash Flow Data (De

Supplemental Cash Flow Data (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Change in Operating Capital [Abstract]
(Increase) decrease in accounts receivable	$ 340.2	$ 584.6
(Increase) decrease in work in process and other current assets	(474.7)	(394.3)
Increase (decrease) in accounts payable	(985.8)	(1,016.1)
Increase (decrease) in customer advances, taxes payable and other current liabilities	(489.6)	(786.3)
Change in other assets and liabilities, net	(51.6)	(52.7)
Increase (decrease) in operating capital	(1,661.5)	(1,664.8)
Income taxes paid	306.4	289.1
Interest paid	70.7	75.2
Operating leases, Net increase in lease liability	93.6	77.4
Finance leases, Net increase in lease liability	$ 25	$ 25.6

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	$ (1,337.6)	$ (1,437.9)
Other comprehensive income (loss) before reclassifications	(110.4)	80
Reclassification from accumulated other comprehensive income (loss)	2.5	3.7
June 30	(1,445.5)	(1,354.2)
Cash Flow Hedge
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(8.1)	(12.1)
Other comprehensive income (loss) before reclassifications	0	0
Reclassification from accumulated other comprehensive income (loss)	1.9	2
June 30	(6.2)	(10.1)
Defined Benefit Pension Plans and Postemployment Arrangements
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(42.7)	(41.3)
Other comprehensive income (loss) before reclassifications	0	0
Reclassification from accumulated other comprehensive income (loss)	0.6	1.7
June 30	(42.1)	(39.6)
Foreign Currency Translation
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(1,286.8)	(1,384.5)
Other comprehensive income (loss) before reclassifications	(110.4)	80
Reclassification from accumulated other comprehensive income (loss)	0	0
June 30	$ (1,397.2)	$ (1,304.5)

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Carrying Amount
Assets:
Cash and cash equivalents	$ 2,711.7		$ 4,432
Marketable equity securities	0.8		0.9
Cross currency swaps - net investment hedge	11.5		0
Non-marketable equity securities	12.5		6.7
Liabilities:
Short-term debt	15.1		10.9
Cross currency swaps - net investment hedge	0		6.6
Contingent purchase price obligations	249.8		229.5
Long-term debt	6,239.6		5,639.6
Fair Value
Assets:
Cash and cash equivalents	2,711.7		4,432
Marketable equity securities	0.8		0.9
Cross currency swaps - net investment hedge	11.5		0
Non-marketable equity securities	12.5		6.7
Liabilities:
Short-term debt	15.1		10.9
Cross currency swaps - net investment hedge	0		6.6
Contingent purchase price obligations	249.8		229.5
Long-term debt	5,778.2		5,237.8
Contingent purchase price obligations
Changes in Level 3 Fair Value Measurements [Roll Forward]
January 1	229.5	$ 115
Acquisitions	27.4	62.9
Revaluation and interest	6.2	(6.2)
Payments	(12.6)	(14.3)
Foreign currency translation	(0.7)	0.6
June 30	249.8	$ 158
Fair Value, Recurring [Member]
Assets:
Cash and cash equivalents	2,711.7		4,432
Marketable equity securities	0.8		0.9
Cross currency swaps - net investment hedge	11.5		0
Liabilities:
Cross currency swaps - net investment hedge	0		6.6
Contingent purchase price obligations	249.8		229.5
Fair Value, Recurring [Member] | Level 1
Assets:
Cash and cash equivalents	2,711.7		4,432
Marketable equity securities	0.8		0.9
Fair Value, Recurring [Member] | Level 2
Assets:
Cross currency swaps - net investment hedge	11.5		0
Liabilities:
Cross currency swaps - net investment hedge	0		6.6
Fair Value, Recurring [Member] | Level 3
Liabilities:
Contingent purchase price obligations	$ 249.8		$ 229.5