$OMC
OMNICOM GROUP INC. Stock $omc

$omc Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000002998924000007 Filed on February 07, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$3.631B	$4.061B	$14.69B
YoY Change	5.44%	4.98%	2.82%
Cost Of Revenue	$2.693B	$2.954B	$11.98B
YoY Change	-8.84%	5.8%	3.23%
Gross Profit	$937.9M	$1.107B	$2.710B
YoY Change	91.56%	2.85%	1.06%
Gross Profit Margin	25.83%	27.26%	18.44%
Selling, General & Admin	$399.4M	$406.5M	$393.7M
YoY Change	347.76%	7.28%	4.02%
% of Gross Profit	42.58%	36.72%	14.53%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$59.60M	$53.70M	$130.8M
YoY Change	72.25%	-1.65%	-5.97%
% of Gross Profit	6.35%	4.85%	4.83%
Operating Expenses	$459.0M	$460.2M	$393.7M
YoY Change	414.57%	6.16%	4.02%
Operating Profit	$478.9M	$646.7M	$2.105B
YoY Change	38.21%	0.62%	1.03%
Interest Expense	-$26.80M	-$26.80M	$218.5M
YoY Change	-148.82%	3.47%	4.75%
% of Operating Profit	-5.6%	-4.14%	10.38%
Other Income/Expense, Net			-$55.30M
YoY Change			36.88%
Pretax Income	$452.1M	$619.9M	$696.0M
YoY Change	38.17%	0.5%	-11.82%
Income Tax	$116.0M	$164.2M	$524.9M
% Of Pretax Income	25.66%	26.49%	75.42%
Net Earnings	$318.6M	$425.7M	$1.391B
YoY Change	40.04%	-0.95%	5.69%
Net Earnings / Revenue	8.78%	10.48%	9.47%
Basic Earnings Per Share	$1.61		$6.98
Diluted Earnings Per Share	$1.59	$2.13	$6.91
COMMON SHARES
Basic Shares Outstanding	198.0M shares	197.9M shares	199.4M shares
Diluted Shares Outstanding	200.1M shares		201.4M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.173B	$4.432B	$4.432B
YoY Change	-5.26%	2.06%	2.06%
Cash & Equivalents	$3.173B	$4.432B	$4.432B
Short-Term Investments		$0.00	$0.00
Other Short-Term Assets	$1.076B	$949.9M	$949.9M
YoY Change	10.35%	3.38%	3.38%
Inventory	$788.8M	$664.4M	$664.4M
Prepaid Expenses
Receivables	$8.829B	$8.660B	$9.338B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$13.87B	$15.38B	$15.38B
YoY Change	7.53%	5.28%	5.28%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.881B	$1.921B	$1.921B
YoY Change	-4.07%	-6.96%	-6.96%
Goodwill	$10.69B	$10.08B
YoY Change	9.2%	3.57%
Intangibles	$533.0M	$366.9M
YoY Change	77.49%	17.07%
Long-Term Investments	$64.80M	$66.40M	$66.40M
YoY Change	-2.41%	0.3%	0.3%
Other Assets	$236.4M	$223.5M	$223.5M
YoY Change	6.53%	6.18%	6.18%
Total Long-Term Assets	$13.41B	$12.66B	$12.66B
YoY Change	8.64%	2.19%	2.19%
TOTAL ASSETS
Total Short-Term Assets	$13.87B	$15.38B	$15.38B
Total Long-Term Assets	$13.41B	$12.66B	$12.66B
Total Assets	$27.28B	$28.04B	$28.04B
YoY Change	8.08%	3.86%	3.86%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$10.34B	$11.63B	$11.63B
YoY Change	7.85%	5.76%	5.76%
Accrued Expenses			$217.3M
YoY Change			4.52%
Deferred Revenue	$1.238B	$1.356B
YoY Change	-3.24%	-9.12%
Short-Term Debt	$11.20M	$10.90M	$10.90M
YoY Change	-39.46%	-35.5%	-35.5%
Long-Term Debt Due	$750.3M	$750.5M	$750.5M
YoY Change
Total Short-Term Liabilities	$14.95B	$16.25B	$16.25B
YoY Change	11.06%	7.93%	7.93%
LONG-TERM LIABILITIES
Long-Term Debt	$5.501B	$4.889B	$4.889B
YoY Change	-1.93%	-12.34%	-12.34%
Other Long-Term Liabilities	$1.743B	$887.7M	$1.741B
YoY Change	107.57%	5.99%	0.18%
Total Long-Term Liabilities	$7.244B	$887.7M	$6.630B
YoY Change	762.53%	5.99%	-9.36%
TOTAL LIABILITIES
Total Short-Term Liabilities	$14.95B	$16.25B	$16.25B
Total Long-Term Liabilities	$7.244B	$887.7M	$6.630B
Total Liabilities	$23.71B	$17.13B	$24.43B
YoY Change	65.72%	7.82%	2.85%
SHAREHOLDERS EQUITY
Retained Earnings	$10.75B	$10.57B
YoY Change	9.42%	8.54%
Common Stock	$556.6M	$536.6M
YoY Change	-10.99%	-12.85%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$6.323B	$6.154B
YoY Change	6.27%	8.64%
Treasury Stock Shares
Shareholders Equity	$3.570B	$3.616B	$3.616B
YoY Change
Total Liabilities & Shareholders Equity	$27.28B	$28.04B	$28.04B
YoY Change	8.08%	3.86%	3.86%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$318.6M	$425.7M	$1.391B
YoY Change	40.04%	-0.95%	5.69%
Depreciation, Depletion And Amortization	$59.60M	$53.70M	$130.8M
YoY Change	72.25%	-1.65%	-5.97%
Cash From Operating Activities	-$618.5M	$1.801B	$1.422B
YoY Change	18.46%	53.0%	53.47%
INVESTING ACTIVITIES
Capital Expenditures	$23.10M	$14.20M	$78.40M
YoY Change	0.0%	12.7%	0.26%
Acquisitions
YoY Change
Other Investing Activities	-$815.2M	-$15.30M	-$190.0M
YoY Change	-5722.07%	-139.64%	-833.59%
Cash From Investing Activities	-$838.3M	-$29.50M	$79.10M
YoY Change	2129.52%	-213.46%	-120.77%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$570.8M
YoY Change			-6.64%
Debt Paid & Issued, Net			$0.00
YoY Change
Cash From Financing Activities	283.4M	-214.1M	-$1.388B
YoY Change	-159.16%	-21.4%	1.89%
NET CHANGE
Cash From Operating Activities	-618.5M	1.801B	$1.422B
Cash From Investing Activities	-838.3M	-29.50M	$79.10M
Cash From Financing Activities	283.4M	-214.1M	-$1.388B
Net Change In Cash	-1.173B	1.557B	$150.2M
YoY Change	15.01%	67.34%	-114.51%
FREE CASH FLOW
Cash From Operating Activities	-$618.5M	$1.801B	$1.422B
Capital Expenditures	$23.10M	$14.20M	$78.40M
Free Cash Flow	-$641.6M	$1.787B	$1.344B
YoY Change	17.68%	53.44%	58.38%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	us-gaap	Revenues Revenues	14289100000	usd
CY2021	us-gaap	Revenues Revenues	14289400000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000029989
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P5Y
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesNoncurrent
CY2023Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesCurrent
CY2023Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesCurrent
CY2022Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilitiesCurrent
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Entity File Number EntityFileNumber	1-10551
CY2023	dei	Entity Registrant Name EntityRegistrantName	OMNICOM GROUP INC.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NY
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-1514814
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	280 Park Avenue
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	New York
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10017
CY2023	dei	City Area Code CityAreaCode	212
CY2023	dei	Local Phone Number LocalPhoneNumber	415-3600
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	18548799047	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	197992717	shares
CY2023	dei	Auditor Name AuditorName	KPMG LLP
CY2023	dei	Auditor Location AuditorLocation	New York, NY
CY2023	dei	Auditor Firm AuditorFirmId	185
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4432000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4281800000	usd
CY2023Q4	us-gaap	Short Term Investments ShortTermInvestments	0	usd
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	60700000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	17200000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	24700000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	8659800000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	8097100000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	1342500000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	1254600000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	949900000	usd
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	918800000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	15384200000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	14613000000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1150400000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1167500000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	874900000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	900100000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1046400000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1165000000	usd
CY2023Q4	us-gaap	Equity Method Investments EquityMethodInvestments	66400000	usd
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	66200000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	10082300000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	9734300000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	863600000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	819900000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	366900000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	313400000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	223500000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	210500000	usd
CY2023Q4	us-gaap	Assets Assets	28044600000	usd
CY2022Q4	us-gaap	Assets Assets	27002500000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	11634000000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	11000200000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1356200000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1492300000	usd
CY2023Q4	us-gaap	Notes Payable Current NotesPayableCurrent	750500000	usd
CY2022Q4	us-gaap	Notes Payable Current NotesPayableCurrent	0	usd
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	10900000	usd
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	16900000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	351600000	usd
CY2022Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	300000000.0	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	2142800000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	2243400000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	16246000000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	15052800000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	887700000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	837500000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	853000000.0	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	900000000.0	usd
CY2023Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	4889100000	usd
CY2022Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	5577200000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	529100000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	475700000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	414600000	usd
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	382900000	usd
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	7500000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	7500000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.15
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.15
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	297200000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	297200000	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	198000000	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	202700000	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	44600000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	44600000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	492000000.0	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	571100000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	10571500000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	9739300000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1337600000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1437900000	usd
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	99200000	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	94500000	shares
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	6154200000	usd
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	5665000000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	3616300000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	3252100000	usd
CY2023Q4	us-gaap	Minority Interest MinorityInterest	608800000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	524300000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4225100000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3776400000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	28044600000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	27002500000	usd
CY2023	us-gaap	Revenues Revenues	14692200000	usd
CY2022	us-gaap	Revenues Revenues	14289100000	usd
CY2021	us-gaap	Revenues Revenues	14289400000	usd
CY2023	omc	Salary And Service Costs SalaryAndServiceCosts	10701200000	usd
CY2022	omc	Salary And Service Costs SalaryAndServiceCosts	10325900000	usd
CY2021	omc	Salary And Service Costs SalaryAndServiceCosts	10402000000	usd
CY2023	omc	Occupancyand Other Costs OccupancyandOtherCosts	1168800000	usd
CY2022	omc	Occupancyand Other Costs OccupancyandOtherCosts	1168600000	usd
CY2021	omc	Occupancyand Other Costs OccupancyandOtherCosts	1148200000	usd
CY2023	us-gaap	Restructuring Charges RestructuringCharges	191500000	usd
CY2022	us-gaap	Restructuring Charges RestructuringCharges	0	usd
CY2021	us-gaap	Restructuring Charges RestructuringCharges	0	usd
CY2023	omc	Charges Arising From The Effects Of The War In Ukraine ChargesArisingFromTheEffectsOfTheWarInUkraine	0	usd
CY2022	omc	Charges Arising From The Effects Of The War In Ukraine ChargesArisingFromTheEffectsOfTheWarInUkraine	113400000	usd
CY2021	omc	Charges Arising From The Effects Of The War In Ukraine ChargesArisingFromTheEffectsOfTheWarInUkraine	0	usd
CY2023	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	78800000	usd
CY2022	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	50500000	usd
CY2023	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	11982700000	usd
CY2022	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	11607900000	usd
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	11499700000	usd
CY2023	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	393700000	usd
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	378500000	usd
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	379700000	usd
CY2023	us-gaap	Depreciation And Amortization DepreciationAndAmortization	211100000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	219400000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	212100000	usd
CY2023	us-gaap	Costs And Expenses CostsAndExpenses	12587500000	usd
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	12205800000	usd
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	12091500000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	2104700000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	2083300000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	2197900000	usd
CY2023	us-gaap	Interest Expense InterestExpense	218500000	usd
CY2022	us-gaap	Interest Expense InterestExpense	208600000	usd
CY2021	us-gaap	Interest Expense InterestExpense	236400000	usd
CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	106700000	usd
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	70700000	usd
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	27300000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1992900000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1945400000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1945400000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1988800000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1988800000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	524900000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	546800000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	488700000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5200000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5200000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5200000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7500000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	1473200000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	1403800000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	1507600000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	81800000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	87300000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	99800000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1391400000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	1316500000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1407800000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.98
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.40
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.57
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.91
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.36
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.53
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-1600000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-4000000.0	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-4000000.0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	6800000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-58400000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-28300000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	4800000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	10700000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	18100000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	600000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-20000000.0	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-13600000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1400000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-49100000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-32800000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	98900000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-255200000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-92200000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	101500000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-202100000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-55400000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1574700000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1201700000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1452200000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	83000000.0	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	70800000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	82900000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1491700000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1130900000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1369300000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4225100000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3776400000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3773700000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.80
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.80
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.80
CY2023	us-gaap	Profit Loss ProfitLoss	1473200000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	1403800000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	1507600000	usd
CY2023	us-gaap	Depreciation Depreciation	130800000	usd
CY2022	us-gaap	Depreciation Depreciation	139100000	usd
CY2021	us-gaap	Depreciation Depreciation	132100000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80300000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80300000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80000000.0	usd
CY2023	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	5300000	usd
CY2022	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	5400000	usd
CY2021	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	-8800000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	84800000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	81700000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	84700000	usd
CY2023	us-gaap	Restructuring Charges RestructuringCharges	191500000	usd
CY2022	us-gaap	Restructuring Charges RestructuringCharges	0	usd
CY2021	us-gaap	Restructuring Charges RestructuringCharges	0	usd
CY2023	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	78800000	usd
CY2022	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	50500000	usd
CY2023	omc	Non Cash Charges Related To The Effects Of The War In Ukraine NonCashChargesRelatedToTheEffectsOfTheWarInUkraine	0	usd
CY2022	omc	Non Cash Charges Related To The Effects Of The War In Ukraine NonCashChargesRelatedToTheEffectsOfTheWarInUkraine	65800000	usd
CY2021	omc	Non Cash Charges Related To The Effects Of The War In Ukraine NonCashChargesRelatedToTheEffectsOfTheWarInUkraine	0	usd
CY2023	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-2300000	usd
CY2022	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-5600000	usd
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	39800000	usd
CY2023	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	462900000	usd
CY2022	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	844000000.0	usd
CY2021	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-160500000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1421900000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	926500000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1945400000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	78400000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	78200000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	665800000	usd
CY2023	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	93300000	usd
CY2022	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	276800000	usd
CY2021	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	160000000.0	usd
CY2023	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-60800000	usd
CY2022	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	61400000	usd
CY2021	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	0	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-190000000.0	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-35500000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-116600000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	79100000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-380900000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-709200000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1221300000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1250000000	usd
CY2023	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-8700000	usd
CY2022	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	8900000	usd
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	6400000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	562700000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	581100000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	592300000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	570800000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	611400000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	527300000	usd
CY2023	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	35600000	usd
CY2022	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	17400000	usd
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	9100000	usd
CY2023	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	87600000	usd
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	20800000	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	21900000	usd
CY2023	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	70900000	usd
CY2022	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	79500000	usd
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	113100000	usd
CY2023	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	67700000	usd
CY2022	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	32600000	usd
CY2021	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	22600000	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-55000000.0	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-62900000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-100600000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1387800000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1362000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1391000000	usd
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	37000000.0	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-218600000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	150200000	usd
CY2022	omc	Goodwill Contingent Purchase Priceof Acquired Businesses GoodwillContingentPurchasePriceofAcquiredBusinesses	8700000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-14000000	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-3300000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1100000	usd
CY2023	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	120600000	usd
CY2022	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	19600000	usd
CY2023	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	128600000	usd
CY2022	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-253100000	usd
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentration of Credit Risk.</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> We provide advertising, marketing and corporate communications services to several thousand clients that operate in nearly every industry sector of the global economy, and we grant credit to qualified clients in the normal course of business. Due to the diversified nature of our client base, we do not believe that we are exposed to a concentration of credit risk as our largest client accounted for 3.0% of revenue in 2023.</span></div>
CY2023	omc	Percentage Of Revenue From Largest Client PercentageOfRevenueFromLargestClient	0.030
CY2023	us-gaap	Revenues Revenues	14692200000	usd
CY2023	us-gaap	Revenues Revenues	14692200000	usd
CY2022	us-gaap	Revenues Revenues	14289100000	usd
CY2021	us-gaap	Revenues Revenues	14289400000	usd
CY2023Q4	omc	Media Productionand Other Costs MediaProductionandOtherCosts	664400000	usd
CY2022Q4	omc	Media Productionand Other Costs MediaProductionandOtherCosts	725100000	usd
CY2023Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	678100000	usd
CY2022Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	529500000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	1342500000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Gross Current ContractWithCustomerAssetGrossCurrent	1254600000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1356200000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1492300000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1391400000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	1316500000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1407800000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	199400000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	205600000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	214300000	shares
CY2023	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2000000.0	shares
CY2022	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1400000	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1300000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	201400000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	207000000.0	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	215600000	shares
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4300000	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4700000	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.98
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.40
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.57
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.91
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.36
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.53
CY2023	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	340000000	usd
CY2023Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	14500000	usd
CY2023Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	229500000	usd
CY2022Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	115000000	usd
CY2023Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	62400000	usd
CY2022Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	39200000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	9734300000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	9738600000	usd
CY2023	omc	Goodwill Acquisitions Of Controlling Interests GoodwillAcquisitionsOfControllingInterests	51700000	usd
CY2022	omc	Goodwill Acquisitions Of Controlling Interests GoodwillAcquisitionsOfControllingInterests	211700000	usd
CY2023	omc	Goodwill Acquisitions Of Noncontrolling Interests GoodwillAcquisitionsOfNoncontrollingInterests	128600000	usd
CY2022	omc	Goodwill Acquisitions Of Noncontrolling Interests GoodwillAcquisitionsOfNoncontrollingInterests	48000000.0	usd
CY2023	omc	Goodwill Contingent Purchase Priceof Acquired Businesses GoodwillContingentPurchasePriceofAcquiredBusinesses	159700000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	10082300000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	9734300000	usd
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2023	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2023Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	0	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1230500000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	863600000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	366900000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1133300000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	819900000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	313400000	usd
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	10900000	usd
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	16900000	usd
CY2023Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.120
CY2022Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.103
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	5669900000	usd
CY2022Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	5611800000	usd
CY2023Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	7800000	usd
CY2022Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	9000000.0	usd
CY2023Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	22300000	usd
CY2022Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	26200000	usd
CY2023Q4	us-gaap	Deferred Gain Loss On Discontinuation Of Interest Rate Fair Value Hedge DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge	200000	usd
CY2022Q4	us-gaap	Deferred Gain Loss On Discontinuation Of Interest Rate Fair Value Hedge DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge	-600000	usd
CY2023Q4	us-gaap	Notes Payable Current NotesPayableCurrent	750500000	usd
CY2022Q4	us-gaap	Notes Payable Current NotesPayableCurrent	0	usd
CY2023Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	4889100000	usd
CY2022Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	5577200000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	750000000.0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1400000000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	553000000.0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	2966900000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	5669900000	usd
CY2023	us-gaap	Interest Expense Debt InterestExpenseDebt	165100000	usd
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	164700000	usd
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	167300000	usd
CY2023	us-gaap	Debt Related Commitment Fees And Debt Issuance Costs DebtRelatedCommitmentFeesAndDebtIssuanceCosts	4800000	usd
CY2022	us-gaap	Debt Related Commitment Fees And Debt Issuance Costs DebtRelatedCommitmentFeesAndDebtIssuanceCosts	4600000	usd
CY2021	us-gaap	Debt Related Commitment Fees And Debt Issuance Costs DebtRelatedCommitmentFeesAndDebtIssuanceCosts	43400000	usd
CY2023	us-gaap	Interest Expense Other InterestExpenseOther	50500000	usd
CY2022	us-gaap	Interest Expense Other InterestExpenseOther	35800000	usd
CY2021	us-gaap	Interest Expense Other InterestExpenseOther	35300000	usd
CY2023	omc	Net Interest Expense Interest Rate Swaps NetInterestExpenseInterestRateSwaps	-1900000	usd
CY2022	omc	Net Interest Expense Interest Rate Swaps NetInterestExpenseInterestRateSwaps	3500000	usd
CY2021	omc	Net Interest Expense Interest Rate Swaps NetInterestExpenseInterestRateSwaps	-9600000	usd
CY2023	us-gaap	Interest Expense InterestExpense	218500000	usd
CY2022	us-gaap	Interest Expense InterestExpense	208600000	usd
CY2021	us-gaap	Interest Expense InterestExpense	236400000	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5127625	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	72.90
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4689250	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	74.30
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5200000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5200000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7500000	usd
CY2023Q4	us-gaap	Equity Method Investment Underlying Equity In Net Assets EquityMethodInvestmentUnderlyingEquityInNetAssets	17000000	usd
CY2022Q4	us-gaap	Equity Method Investment Underlying Equity In Net Assets EquityMethodInvestmentUnderlyingEquityInNetAssets	18300000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	14700000	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	8604042	shares
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	84800000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	81700000	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	84700000	usd
CY2023Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	195800000	usd
CY2023	omc	Excess Tax Benefit Deficiency From Share Based Compensation ExcessTaxBenefitDeficiencyFromShareBasedCompensation	6700000	usd
CY2022	omc	Excess Tax Benefit Deficiency From Share Based Compensation ExcessTaxBenefitDeficiencyFromShareBasedCompensation	1900000	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5127625	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	72.90
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4689250	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	74.30
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	768750	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	83.65
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	853875	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	68.88
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	4025000	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	72.47
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	413750	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	84.94
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	157500	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	84.94
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	60000	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	60.17
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	149300	shares
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	72.99
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	258000	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	77.69
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	44500	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	77.93
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4564575	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	71.81
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	0
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	423750	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	84.94
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	689250	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	84.94
CY2023Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	4564575	shares
CY2023Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	0	shares
CY2023Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	0	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	12.60
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	8.47
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P8Y
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.014
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.23
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.046
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	696000000.0	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	789300000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	845900000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1296900000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1156100000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	1142900000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1992900000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1945400000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1945400000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1988800000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1988800000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	154200000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	180100000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	144000000.0	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	34800000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	57000000.0	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	16500000	usd
CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	330800000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	287400000	usd
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	303900000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	519800000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	524500000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	464400000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	10900000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	11100000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	40000000.0	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1300000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-300000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-11600000	usd
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-7100000	usd
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	11500000	usd
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-4100000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5100000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	22300000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	24300000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	524900000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	546800000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	488700000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.014
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.023
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.002
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.039
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.035
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.036
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.013
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.263
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.281
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.246
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.263
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.281
CY2022	omc	Charges Arising From The Effects Of The War In Ukraine ChargesArisingFromTheEffectsOfTheWarInUkraine	113400000	usd
CY2022	omc	Income Tax Expense Related To Charges Arising From The Effects Of The War In Ukraine IncomeTaxExpenseRelatedToChargesArisingFromTheEffectsOfTheWarInUkraine	4800000	usd
CY2023Q4	omc	Tax Cutsand Jobs Act Transition Taxfor Accumulated Foreign Earnings Liability TaxCutsandJobsActTransitionTaxforAccumulatedForeignEarningsLiability	68900000	usd
CY2022Q4	omc	Tax Cutsand Jobs Act Transition Taxfor Accumulated Foreign Earnings Liability TaxCutsandJobsActTransitionTaxforAccumulatedForeignEarningsLiability	88800000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Gilti Amount EffectiveIncomeTaxRateReconciliationGiltiAmount	17000000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Gilti Amount EffectiveIncomeTaxRateReconciliationGiltiAmount	10900000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	153800000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	197600000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	78600000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	77100000	usd
CY2023Q4	omc	Basis Differences Arising From Acquisitions BasisDifferencesArisingFromAcquisitions	41200000	usd
CY2022Q4	omc	Basis Differences Arising From Acquisitions BasisDifferencesArisingFromAcquisitions	31000000.0	usd
CY2023Q4	omc	Basis Differences From Short Term Assets And Liabilities BasisDifferencesFromShortTermAssetsAndLiabilities	33300000	usd
CY2022Q4	omc	Basis Differences From Short Term Assets And Liabilities BasisDifferencesFromShortTermAssetsAndLiabilities	20500000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	19500000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	18600000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	326400000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	307600000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	18900000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	21100000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	307500000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	286500000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	687300000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	653300000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	71100000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	34900000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	3800000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	6900000	usd
CY2023Q4	omc	Deferred Tax Liabilities Financial Instruments DeferredTaxLiabilitiesFinancialInstruments	900000	usd
CY2022Q4	omc	Deferred Tax Liabilities Financial Instruments DeferredTaxLiabilitiesFinancialInstruments	300000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	763100000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	695400000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	529100000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	475700000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	18900000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	21100000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	167600000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	162800000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3300000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2700000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4300000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4700000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	7900000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1500000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	900000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	500000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	200000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	167800000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	167600000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	161700000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	161800000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	3200000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	4300000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2100000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	19900000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	15900000	usd
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	127900000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	123200000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	115500000	usd
CY2023	us-gaap	Restructuring Charges RestructuringCharges	191500000	usd
CY2023	omc	Real Estate And Other Repositioning Costs After Tax RealEstateAndOtherRepositioningCostsAfterTax	145500000	usd
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	450300000	usd
CY2023	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	78800000	usd
CY2022	omc	Charges Arising From The Effects Of The War In Ukraine ChargesArisingFromTheEffectsOfTheWarInUkraine	113400000	usd
CY2022	omc	Cash Charges Related To The Effects Of The War In Ukraine CashChargesRelatedToTheEffectsOfTheWarInUkraine	47600000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	513900000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	129100000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	989100000	usd
CY2023	omc	Increase Decrease In Work In Progress And Other Current Assets IncreaseDecreaseInWorkInProgressAndOtherCurrentAssets	121800000	usd
CY2022	omc	Increase Decrease In Work In Progress And Other Current Assets IncreaseDecreaseInWorkInProgressAndOtherCurrentAssets	197900000	usd
CY2021	omc	Increase Decrease In Work In Progress And Other Current Assets IncreaseDecreaseInWorkInProgressAndOtherCurrentAssets	281700000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	602300000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-350100000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	921300000	usd
CY2023	omc	Increase Decrease In Customer Advances And Other Current Liabilities IncreaseDecreaseInCustomerAdvancesAndOtherCurrentLiabilities	-399600000	usd
CY2022	omc	Increase Decrease In Customer Advances And Other Current Liabilities IncreaseDecreaseInCustomerAdvancesAndOtherCurrentLiabilities	-97800000	usd
CY2021	omc	Increase Decrease In Customer Advances And Other Current Liabilities IncreaseDecreaseInCustomerAdvancesAndOtherCurrentLiabilities	338800000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	29900000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	69100000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-171200000	usd
CY2023	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	462900000	usd
CY2022	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	844000000.0	usd
CY2021	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-160500000	usd
CY2023	us-gaap	Income Taxes Paid IncomeTaxesPaid	474300000	usd
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	454400000	usd
CY2023	us-gaap	Interest Paid InterestPaid	162800000	usd
CY2022	us-gaap	Interest Paid InterestPaid	173900000	usd
CY2021	us-gaap	Interest Paid InterestPaid	219300000	usd
CY2021	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	37700000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	206900000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	241700000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	48200000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	74500000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1391400000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	1316500000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1407800000	usd
CY2023	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesNet	-88100000	usd
CY2022	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesNet	-17100000	usd
CY2021	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesNet	-12200000	usd
CY2023	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	1303300000	usd
CY2022	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	1299400000	usd
CY2021	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	1395600000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	216200000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	243800000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	29900000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	23500000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2500000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2500000	usd
CY2023	us-gaap	Sublease Income SubleaseIncome	3700000	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	3800000	usd
CY2023	omc	Operating Leases Total Lease Cost OperatingLeasesTotalLeaseCost	244900000	usd
CY2022	omc	Operating Leases Total Lease Cost OperatingLeasesTotalLeaseCost	266000000.0	usd
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	58900000	usd
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	55100000	usd
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	7400000	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	5700000	usd
CY2023	omc	Finance Leases Total Lease Cost FinanceLeasesTotalLeaseCost	66300000	usd
CY2022	omc	Finance Leases Total Lease Cost FinanceLeasesTotalLeaseCost	60800000	usd
CY2023	us-gaap	Lease Cost LeaseCost	311200000	usd
CY2022	us-gaap	Lease Cost LeaseCost	326800000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	251600000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	57700000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	206800000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	44500000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	176500000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	27500000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	134700000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	12700000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	105400000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	3000000.0	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	470000000.0	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	2100000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1345000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	147500000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	274700000	usd
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	9300000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1070300000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	138200000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1046400000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1165000000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	217300000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	207900000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	853000000.0	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	900000000.0	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1070300000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1107900000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y4M24D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y10M24D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.037
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.034
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1620900000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1684600000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	404400000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	383000000.0	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	2025300000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	2067600000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1150400000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1167500000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	874900000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	900100000	usd
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y10M24D
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y1M6D
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.066
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.051
CY2023Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	414600000	usd
CY2023Q4	omc	Redeemable Noncontrolling Interests Currently Exercisable RedeemableNoncontrollingInterestsCurrentlyExercisable	120900000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1252300000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-197200000	usd
CY2022	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-11600000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1437900000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	92900000	usd
CY2023	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-7400000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1337600000	usd

Files In Submission

Name	View Source	Status
FilingSummary.xml	Edgar Link	unprocessable
omc-20231231_def.xml	Edgar Link	unprocessable
omc-20231231_cal.xml	Edgar Link	unprocessable
omc-20231231_lab.xml	Edgar Link	unprocessable
omc-20231231_pre.xml	Edgar Link	unprocessable
0000029989-24-000007-index-headers.html	Edgar Link	pending
0000029989-24-000007-index.html	Edgar Link	pending
0000029989-24-000007.txt	Edgar Link	pending
0000029989-24-000007-xbrl.zip	Edgar Link	pending
a2023q4exhibit106.htm	Edgar Link	pending
a2023q4exhibit21.htm	Edgar Link	pending
a2023q4exhibit23.htm	Edgar Link	pending
a2023q4exhibit311.htm	Edgar Link	pending
a2023q4exhibit312.htm	Edgar Link	pending
a2023q4exhibit32.htm	Edgar Link	pending
a2023q4exhibit97.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
omc-20231231.htm	Edgar Link	pending
omc-20231231.xsd	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
omc-20231231_htm.xml	Edgar Link	completed
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$OMC
OMNICOM GROUP INC. Stock $omc

2024 Q1 Form 10-K Financial Statement

#000002998924000007 Filed on February 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OMC OMNICOM GROUP INC. Stock $omc

2024 Q1 Form 10-K Financial Statement

#000002998924000007 Filed on February 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OMC
OMNICOM GROUP INC. Stock $omc