Omnicom (OMC) 10-Q 17 Jul 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 10, 2019
Entity Listings [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Entity File Number	1-10551
Entity Registrant Name	OMNICOM GROUP INC.
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	13-1514814
Entity Address, Address Line One	437 Madison Avenue
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022
City Area Code	212
Local Phone Number	415-3600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		217,523,691
Entity Central Index Key	0000029989
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Document Transition Report	false
Amendment Flag	false
Common Stock, $0.15 Par Value
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, $0.15 Par Value
Trading Symbol	OMC
Security Exchange Name	NYSE
0.800% Senior Notes due 2027
Entity Listings [Line Items]
Title of 12(b) Security	0.800% Senior Notes due 2027
Trading Symbol	OMC/27
Security Exchange Name	NYSE
1.400% Senior Notes due 2031
Entity Listings [Line Items]
Title of 12(b) Security	1.400% Senior Notes due 2031
Trading Symbol	OMC/31
Security Exchange Name	NYSE

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 2,898.1	$ 3,652.4
Short-term investments, at cost	5.4	5.5
Accounts receivable, net of allowance for doubtful accounts of $24.9 and $26.8	7,244.9	7,666.1
Work in process	1,363.5	1,161.5
Other current assets	1,290.9	1,241.4
Total Current Assets	12,802.8	13,726.9
Property and Equipment at cost, less accumulated depreciation of $1,143.7 and $1,185.0	679.8	694.4
Operating Lease Right-Of-Use Assets	1,435.3	0
Equity Method Investments	111.7	120.9
Goodwill	9,364.7	9,384.3
Intangible Assets, net of accumulated amortization of $748.2 and $737.4	353.5	382.8
Other Assets	294.3	307.7
TOTAL ASSETS	25,042.1	24,617
Current Liabilities:
Accounts payable	10,445.9	11,464.3
Customer advances	1,094.1	1,159
Current portion of debt	899.5	499.6
Short-term debt	608.5	8.1
Taxes payable	123.4	180.6
Other current liabilities	1,896.7	1,958.6
Total Current Liabilities	15,068.1	15,270.2
Long-Term Liabilities	975.1	1,197.8
Long-Term Liability - Operating Leases	1,317.9	0
Long-Term Debt	4,025.9	4,384.1
Deferred Tax Liabilities	438	413.7
Commitments and Contingent Liabilities (Note 13)
Temporary Equity - Redeemable Noncontrolling Interests	257.7	244.3
Shareholders’ Equity:
Preferred stock	0	0
Common stock	44.6	44.6
Additional paid-in capital	726.2	728.8
Retained earnings	7,384.7	7,016.1
Accumulated other comprehensive income (loss)	(1,234.9)	(1,228.5)
Treasury stock, at cost	(4,510.4)	(4,013.9)
Total Shareholders’ Equity	2,410.2	2,547.1
Noncontrolling interests	549.2	559.8
Total Equity	2,959.4	3,106.9
TOTAL LIABILITIES AND EQUITY	$ 25,042.1	$ 24,617

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Consolidated Balance Sheets (Parenthetical) [Abstract]
Allowance for doubtful accounts	$ 24.9	$ 26.8
Accumulated depreciation	1,143.7	1,185
Intangible assets, accumulated amortization	$ 748.2	$ 737.4

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenue	$ 3,719.8	$ 3,859.6	$ 7,188.7	$ 7,489.2
Salary and service costs	2,665.2	2,772.9	5,232.8	5,485.7
Occupancy and other costs	315.4	319.6	624.7	639.9
Cost of services	2,980.6	3,092.5	5,857.5	6,125.6
Selling, general and administrative expenses	107.7	117.4	211.2	222.9
Depreciation and amortization	57.8	67.4	117.4	136.8
Operating Expenses	3,146.1	3,277.3	6,186.1	6,485.3
Operating Profit	573.7	582.3	1,002.6	1,003.9
Interest Expense	66.6	66.4	129.6	128.6
Interest Income	16.4	13.9	33.4	29.3
Income Before Income Taxes and Income From Equity Method Investments	523.5	529.8	906.4	904.6
Income Tax Expense	130.6	136.7	233.2	227.7
Income From Equity Method Investments	1.2	1.7	0.7	2.6
Net Income	394.1	394.8	673.9	679.5
Net Income Attributed To Noncontrolling Interests	23.4	30.6	40	51.2
Net Income - Omnicom Group Inc.	$ 370.7	$ 364.2	$ 633.9	$ 628.3
Net Income Per Share - Omnicom Group Inc.:
Basic	$ 1.69	$ 1.61	$ 2.86	$ 2.75
Diluted	1.68	1.60	2.85	2.73
Dividends Declared Per Common Share	$ 0.65	$ 0.60	$ 1.30	$ 1.20

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 394.1	$ 394.8	$ 673.9	$ 679.5
Cash flow hedge:
Amortization of loss included in interest expense	1.4	1.4	2.8	2.8
Income tax effect	(0.4)	(0.4)	(0.8)	(0.8)
Other comprehensive income	1	1	2	2
Defined benefit pension plans and postemployment arrangements:
Amortization of prior service cost	1.3	1.9	2.6	3.9
Amortization of actuarial losses	0.5	2.2	1	4.2
Income tax effect	(0.9)	(1.3)	(1.6)	(2.4)
Other comprehensive income	0.9	2.8	2	5.7
Available-for-sale securities:
Reclassification	0	0	0	0.3
Other comprehensive income	0	0	0	0.3
Foreign currency translation adjustment	(18.8)	(325.8)	12.9	(237.1)
Other Comprehensive Income	(16.9)	(322)	16.9	(229.1)
Comprehensive Income	377.2	72.8	690.8	450.4
Comprehensive Income Attributed To Noncontrolling Interests	23.4	0.9	41	26.5
Comprehensive Income - Omnicom Group Inc.	$ 353.8	$ 71.9	$ 649.8	$ 423.9

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities:
Net Income	$ 673.9	$ 679.5
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization of right-of-use assets	74.6	82.3
Amortization of intangible assets	42.8	54.5
Amortization of net deferred gain on interest rate swaps	(6.4)	(6.4)
Share-based compensation	34.3	35.1
Other, net	(5.5)	13.9
Use of operating capital	(1,306.6)	(1,431.8)
Net Cash Used In Operating Activities	(492.9)	(572.9)
Cash Flows from Investing Activities:
Capital expenditures	(48.8)	(89.8)
Acquisition of businesses and interests in affiliates, net of cash acquired	(0.7)	(207.3)
Proceeds from disposition of subsidiaries and sale of investments	74.2	4
Net Cash Provided By (Used In) Investing Activities	24.7	(293.1)
Cash Flows from Financing Activities:
Change in short-term debt	611.1	9.7
Dividends paid to common shareholders	(280.4)	(278.1)
Repurchases of common stock	(527.6)	(469.2)
Proceeds from stock plans	3.9	6.5
Acquisition of additional noncontrolling interests	(3.1)	(40.3)
Dividends paid to noncontrolling interest shareholders	(46.1)	(57.3)
Payment of contingent purchase price obligations	(30.2)	(51.3)
Other, net	(24.3)	(22.4)
Net Cash Used In Financing Activities	(296.7)	(902.4)
Effect of foreign exchange rate changes on cash and cash equivalents	10.6	(114.3)
Net Decrease in Cash and Cash Equivalents	(754.3)	(1,882.7)
Cash and Cash Equivalents at the Beginning of Period	3,652.4	3,796
Cash and Cash Equivalents at the End of Period	$ 2,898.1	$ 1,913.3

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Shareholders’ Equity	Noncontrolling Interests
Cumulative effect of accounting change	$ 24			$ 23.6			$ 23.6	$ 0.4
Balance, shares at Dec. 31, 2017		297.2
Balance at Dec. 31, 2017	3,152.2	$ 44.6	$ 828.3	6,210.6	$ (963)	$ (3,505.4)	2,615.1	537.1
Net Income	284.7			264.1			264.1	20.6
Other comprehensive income (loss)	92.9				87.9		87.9	5
Dividends to noncontrolling interests	(16.3)							(16.3)
Acquisition of noncontrolling interests	(34.5)		(22.8)				(22.8)	(11.7)
Increase in noncontrolling interests from business combinations	55.3							55.3
Change in temporary equity	9.1		9.1				9.1
Common stock dividends declared	(138.2)			(138.2)			(138.2)
Share-based compensation	17.5		17.5				17.5
Stock issued, share-based compensation	2.8		0.9			1.9	2.8
Common stock repurchased	(232.7)					(232.7)	(232.7)
Balance at Mar. 31, 2018	3,216.8	$ 44.6	833	6,360.1	(875.1)	(3,736.2)	2,626.4	590.4
Balance, shares at Mar. 31, 2018		297.2
Balance, shares at Dec. 31, 2017		297.2
Balance at Dec. 31, 2017	3,152.2	$ 44.6	828.3	6,210.6	(963)	(3,505.4)	2,615.1	537.1
Net Income	679.5
Other comprehensive income (loss)	(229.1)
Balance at Jun. 30, 2018	2,858.9	$ 44.6	811.5	6,587.7	(1,167.3)	(3,955.1)	2,321.4	537.5
Balance, shares at Jun. 30, 2018		297.2
Balance, shares at Mar. 31, 2018		297.2
Balance at Mar. 31, 2018	3,216.8	$ 44.6	833	6,360.1	(875.1)	(3,736.2)	2,626.4	590.4
Net Income	394.8			364.2			364.2	30.6
Other comprehensive income (loss)	(322)				(292.2)		(292.2)	(29.8)
Dividends to noncontrolling interests	(41)							(41)
Acquisition of noncontrolling interests	(28.1)		(15)				(15)	(13.1)
Increase in noncontrolling interests from business combinations	0.4							0.4
Change in temporary equity	(11.1)		(11.1)				(11.1)
Common stock dividends declared	(136.6)			(136.6)			(136.6)
Share-based compensation	17.6		17.6				17.6
Stock issued, share-based compensation	4.6		(13)			17.6	4.6
Common stock repurchased	(236.5)					(236.5)	(236.5)
Balance at Jun. 30, 2018	2,858.9	$ 44.6	811.5	6,587.7	(1,167.3)	(3,955.1)	2,321.4	537.5
Balance, shares at Jun. 30, 2018		297.2
Cumulative effect of accounting change	0			22.3	(22.3)		0	0
Balance, shares at Dec. 31, 2018		297.2
Balance at Dec. 31, 2018	3,106.9	$ 44.6	728.8	7,016.1	(1,228.5)	(4,013.9)	2,547.1	559.8
Net Income	279.7			263.2			263.2	16.5
Other comprehensive income (loss)	33.8				32.8		32.8	1
Dividends to noncontrolling interests	(17)							(17)
Acquisition of noncontrolling interests	(4.6)		0.4				0.4	(5)
Increase in noncontrolling interests from business combinations	1							1
Change in temporary equity	(18.2)		(18.2)				(18.2)
Common stock dividends declared	(144.6)			(144.6)			(144.6)
Share-based compensation	16.8		16.8				16.8
Stock issued, share-based compensation	1.9		(9.8)			11.7	1.9
Common stock repurchased	(286.1)					(286.1)	(286.1)
Balance at Mar. 31, 2019	2,969.6	$ 44.6	718	7,157	(1,218)	(4,288.3)	2,413.3	556.3
Balance, shares at Mar. 31, 2019		297.2
Balance, shares at Dec. 31, 2018		297.2
Balance at Dec. 31, 2018	3,106.9	$ 44.6	728.8	7,016.1	(1,228.5)	(4,013.9)	2,547.1	559.8
Net Income	673.9
Other comprehensive income (loss)	16.9
Balance at Jun. 30, 2019	2,959.4	$ 44.6	726.2	7,384.7	(1,234.9)	(4,510.4)	2,410.2	549.2
Balance, shares at Jun. 30, 2019		297.2
Balance, shares at Mar. 31, 2019		297.2
Balance at Mar. 31, 2019	2,969.6	$ 44.6	718	7,157	(1,218)	(4,288.3)	2,413.3	556.3
Net Income	394.1			370.7			370.7	23.4
Other comprehensive income (loss)	(16.9)				(16.9)		(16.9)	0
Dividends to noncontrolling interests	(29.1)							(29.1)
Acquisition of noncontrolling interests	0.3		1.7				1.7	(1.4)
Increase in noncontrolling interests from business combinations	0							0
Change in temporary equity	6.1		6.1				6.1
Common stock dividends declared	(143)			(143)			(143)
Share-based compensation	17.5		17.5				17.5
Stock issued, share-based compensation	2.3		(17.1)			19.4	2.3
Common stock repurchased	(241.5)					(241.5)	(241.5)
Balance at Jun. 30, 2019	$ 2,959.4	$ 44.6	$ 726.2	$ 7,384.7	$ (1,234.9)	$ (4,510.4)	$ 2,410.2	$ 549.2
Balance, shares at Jun. 30, 2019		297.2

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Consolidated Statements of Equity (Parenthetical) [Abstract]
Dividends Declared Per Common Share	$ 0.65	$ 0.65	$ 0.60	$ 0.60	$ 1.30	$ 1.20

Presentation of Financial State

Presentation of Financial Statements	6 Months Ended
	Jun. 30, 2019
Presentation of Financial Statements [Abstract]
Presentation of Financial Statements	Presentation of Financial Statements The terms “Omnicom,” “the Company,” “we,” “our” and “us” each refer to Omnicom Group Inc. and its subsidiaries, unless the context indicates otherwise. The accompanying unaudited consolidated financial statements were prepared in accordance with generally accepted accounting principles in the United States, or U.S. GAAP or GAAP, for interim financial information and Article 10 of Regulation S-X of the Securities and Exchange Commission, or SEC. Accordingly, certain information and footnote disclosure have been condensed or omitted. In our opinion, the accompanying unaudited consolidated financial statements reflect all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation, in all material respects, of the information contained herein. These unaudited consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2018 , or 2018 10-K. Results for the interim periods are not necessarily indicative of results that may be expected for the year. Accounting Changes Except for the changes discussed below, Omnicom has consistently applied the accounting policies to all periods presented in these unaudited consolidated financial statements. Adoption of ASC 842 On January 1, 2019, we adopted FASB Accounting Standards Codification, or ASC, Topic 842, Leases , or ASC 842, which requires the recognition of the right-of-use assets and related operating and finance lease liabilities on the balance sheet. As permitted by ASC 842, we elected the adoption date of January 1, 2019, which is the date of initial application. As a result, the consolidated balance sheet prior to January 1, 2019 was not restated, continues to be reported under ASC Topic 840, Leases , or ASC 840, which did not require the recognition of operating lease liabilities on the balance sheet, and is not comparative. Under ASC 842, all leases are required to be recorded on the balance sheet and are classified as either operating leases or finance leases. The lease classification affects the expense recognition in the income statement. Operating lease charges are recorded entirely in operating expenses. Finance lease charges are split, where amortization of the right-of-use asset is recorded in operating expenses and an implied interest component is recorded in interest expense. The expense recognition for operating leases and finance leases under ASC 842 is substantially consistent with ASC 840. As a result, there is no significant difference in our results of operations presented in our consolidated income statement and consolidated statement of comprehensive income for each period presented. We adopted ASC 842 using a modified retrospective approach for all leases existing at January 1, 2019. The adoption of ASC 842 had a substantial impact on our balance sheet. The most significant impact was the recognition of the operating lease right-of-use assets and the liability for operating leases. The accounting for finance leases (capital leases) was substantially unchanged. Accordingly, upon adoption, leases that were classified as operating leases under ASC 840 were classified as operating leases under ASC 842, and we recorded an adjustment of $1,490.1 million to operating lease right-of-use assets and the related lease liability. The lease liability is based on the present value of the remaining minimum lease payments, determined under ASC 840, discounted using our secured incremental borrowing rate at the effective date of January 1, 2019, using the original lease term as the tenor. As permitted under ASC 842, we elected several practical expedients that permit us to not reassess (1) whether a contract is or contains a lease, (2) the classification of existing leases, and (3) whether previously capitalized costs continue to qualify as initial indirect costs. The application of the practical expedients did not have a significant impact on the measurement of the operating lease liability. The impact of the adoption of ASC 842 on the balance sheet at December 31, 2018 was (in millions): As Reported December 31, 2018 Adoption of ASC 842 Increase (Decrease) Balance January 1, 2019 Other current assets $ 1,241.4 $ (29.2 ) $ 1,212.2 Operating lease right-of-use assets — 1,306.5 1,306.5 Total assets 24,617.0 1,277.3 25,894.3 Other current liabilities 1,958.6 172.5 2,131.1 Long-term liability - Operating leases — 1,258.5 1,258.5 Long-term liabilities 1,197.8 (153.7 ) 1,044.1 Total liabilities and equity 24,617.0 1,277.3 25,894.3 We lease substantially all our office space, office furniture and technology equipment used to conduct our business. We adopted ASC 842 effective January 1, 2019. For contracts entered into on or after the effective date, at the inception of a contract we assess whether the contract is, or contains, a lease. Our assessment is based on: (1) whether the contract involves the use of a distinct identified asset, (2) whether we obtain the right to substantially all the economic benefit from the use of the asset throughout the period, and (3) whether we have the right to direct the use of the asset. At inception of a lease, we allocate the consideration in the contract to each lease component based on its relative stand-alone price to determine the lease payments. Leases entered into prior to January 1, 2019, were accounted for under ASC 840 and were not reassessed. Leases are classified as either finance leases or operating leases. A lease is classified as a finance lease if any one of the following criteria are met: the lease transfers ownership of the asset by the end of the lease term, the lease contains an option to purchase the asset that is reasonably certain to be exercised, the lease term is for a major part of the remaining useful life of the asset or the present value of the lease payments equals or exceeds substantially all of the fair value of the asset. A lease is classified as an operating lease if it does not meet any one of the criteria. Substantially all our operating leases represent office space leases, and substantially all our finance leases represent office furniture and technology equipment leases. For all leases a right-of-use asset and lease liability are recognized at the lease commencement date. The right-of-use asset represents the right to use the leased asset for the lease term. The lease liability represents the present value of the lease payments under the lease. The right-of-use asset is initially measured at cost, which includes the initial lease liability, plus any initial direct costs incurred, consisting mainly of brokerage commissions, less any lease incentives received. All right-of-use assets are reviewed for impairment. The lease liability is initially measured at the present value of the lease payments, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined, our secured incremental borrowing rate for the same term as the underlying lease. For our real estate and other operating leases, we use our secured incremental borrowing rate. For our finance leases, we use the rate implicit in the lease or our secured incremental borrowing rate if the implicit lease rate cannot be determined. Lease payments included in the measurement of the lease liability comprise: the fixed noncancelable lease payments, payments for optional renewal periods where it is reasonably certain the renewal period will be exercised, and payments for early termination options unless it is reasonably certain the lease will not be terminated early. Some of our real estate leases contain variable lease payments, including payments based on an index or rate. Variable lease payments based on an index or rate are initially measured using the index or rate in effect at lease commencement. Lease components are included in the measurement of the initial lease liability, including fixed payments for real estate taxes and insurance for certain office space leases. Additional payments based on the change in an index or rate, or payments based on a change in our portion of the operating expenses, including real estate taxes and insurance, are recorded as a period expense when incurred. Lease modifications result in remeasurement of the lease liability. Operating lease expense consists of the lease payments plus any initial direct costs, primarily brokerage commissions, and is recognized on a straight-line basis over the lease term. Included in lease expense are any variable lease payments incurred in the period that were not included in the initial lease liability. Finance lease expense consists of the amortization of the right-of-use asset on a straight-line basis over the lease term and interest expense determined on an amortized cost basis, and finance lease payments are allocated between a reduction of the lease liability and interest expense. We have elected not to recognize right-of-use assets and lease liabilities for short-term leases that have a term of 12 months or less. The effect of short-term leases on our right-of-use asset and lease liability was not material. Adoption of ASU 2018-02 On January 1, 2019, we adopted ASU 2018-02, Income Statement - Reporting Comprehensive Income: Reclassification of Certain Tax effects from Accumulated Other Comprehensive Income , or ASU 2018-02, which requires the reclassification from accumulated other comprehensive income to retained earnings for the stranded tax effects arising from the change in the reduction of the U.S. federal statutory income tax rate to 21% from 35%. The tax effects of items included in accumulated comprehensive income at December 31, 2017 did not reflect the appropriate tax rate. The adoption of ASU 2018-02 resulted in reclassification between accumulated other comprehensive income and retained earnings of $22.3 million , and had no impact on our results of operations or financial position.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2019
Revenue [Abstract]
Revenue	Revenue Nature of our services We provide an extensive range of advertising, marketing and corporate communications services through various client-centric networks that are organized to meet specific client objectives. Our branded networks and agencies operate in all major markets and provide services in the following fundamental disciplines: advertising, customer relationship management, or CRM, which includes CRM Consumer Experience and CRM Execution & Support, public relations and healthcare. Advertising includes creative services, as well as strategic media planning and buying and data analytics services. CRM Consumer Experience includes Omnicom’s Precision Marketing Group and digital/direct agencies, as well as our branding, shopper marketing and experiential marketing agencies, and CRM Execution & Support includes field marketing, sales support, merchandising and point of sale, as well as other specialized marketing and custom communications services. Public relations services include corporate communications, crisis management, public affairs and media and media relations services. Healthcare includes advertising and media services to global healthcare clients. At the core of all our services is the ability to create or develop a client’s marketing or corporate communications message into content that can be delivered to a target audience across different communications mediums. Our client-centric business model requires that multiple agencies within Omnicom collaborate in formal and informal virtual client networks utilizing our key client matrix organization structure. This collaboration allows us to cut across our internal organizational structures to execute our clients’ marketing requirements in a consistent and comprehensive manner. In addition to collaborating through our client service models, our agencies and networks collaborate across internally developed technology platforms. Annalect, our proprietary data and analytics platform, serves as the strategic resource for all of our agencies and networks to share when developing client service strategies across our virtual networks. Omni, our people-based precision marketing and insights platform, identifies and defines personalized consumer experiences at scale across creative, media and CRM, as well as other disciplines. Revenue by discipline for the three and six months ended June 30, 2019 and 2018 was (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Advertising $ 2,093.9 $ 2,067.6 $ 4,015.3 $ 3,968.9 CRM Consumer Experience 659.5 660.0 1,265.3 1,294.9 CRM Execution & Support 326.1 498.7 675.6 1,007.2 Public Relations 349.3 362.7 683.4 709.1 Healthcare 291.0 270.6 549.1 509.1 $ 3,719.8 $ 3,859.6 $ 7,188.7 $ 7,489.2 Economic factors affecting our revenue Global economic conditions have a direct impact on our revenue. Adverse economic conditions pose a risk that our clients may reduce, postpone or cancel spending for our services, which would impact our revenue. Revenue in our principal geographic markets for the three and six months ended June 30, 2019 and 2018 was (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Americas: North America $ 2,118.4 $ 2,097.4 $ 4,107.6 $ 4,083.1 Latin America 96.9 115.1 185.8 223.5 EMEA: Europe 1,035.9 1,142.6 1,981.4 2,212.7 Middle East and Africa 61.0 70.2 140.0 143.6 Asia-Pacific 407.6 434.3 773.9 826.3 $ 3,719.8 $ 3,859.6 $ 7,188.7 $ 7,489.2 The Americas comprises North America, which includes the United States, Canada and Puerto Rico, and Latin America, which includes South America and Mexico. EMEA comprises Europe, the Middle East and Africa. Asia-Pacific comprises Australia, China, India, Japan, Korea, New Zealand, Singapore and other Asian countries. Contract assets and liabilities Work in process includes contract assets, unbilled fees and costs, and media and production costs. Contract liabilities primarily consist of customer advances. At June 30, 2019 , December 31, 2018 and June 30, 2018 work in process and contract liabilities were (in millions): June 30, 2019 December 31, 2018 June 30, 2018 Work in process: Contract assets and unbilled fees and costs $ 785.7 $ 540.1 $ 709.2 Media and production costs 577.8 621.4 644.3 $ 1,363.5 $ 1,161.5 $ 1,353.5 Contract liabilities: Customer advances $ 1,094.1 $ 1,159.0 $ 1,147.1 Work in process represents accrued costs incurred on behalf of customers, including media and production costs, and fees and other third-party costs that have not yet been billed. Media and production costs are billed during the production process in accordance with the terms of the client contract. Contract assets, which primarily include incentive fees, are not material and will be billed to clients in accordance with the terms of the client contract. Substantially all unbilled fees and costs will be billed within the next 30 days. The contract liability primarily represents advance billings to customers in accordance with the terms of the client contracts, primarily for the reimbursement of third-party costs that are generally incurred in the near term. There were no impairment losses to the contract assets recorded in 2019 .

New Accounting Standards

New Accounting Standards	6 Months Ended
	Jun. 30, 2019
New Accounting Standards [Abstract]
New Accounting Standards	New Accounting Standards In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments , or ASU 2016-13, which changes the impairment model for most financial assets. The new model uses a forward-looking expected loss method, which will generally result in earlier recognition of allowances for losses. ASU 2016-13 is effective for annual and interim periods beginning after December 15, 2019 and early adoption is permitted for annual and interim periods beginning after December 15, 2018. We will adopt ASU 2016-13 on January 1, 2020. However, we are not yet in a position to assess the impact of the new standard on our results of operations or financial position. In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other, Internal-Use Software , or ASU 2018-15, which aligns the accounting for implementation costs incurred in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. ASU 2018-15 is effective for annual and interim periods beginning after December 15, 2019 and early adoption is permitted at any interim period. ASU 2018-15 may be adopted either on a prospective basis, either upon early adoption or the effective date for implementation costs for new or existing arrangements incurred on or after the adoption date, or on a full retrospective basis to the earliest period presented. We are not yet in a position to assess the adoption date or the adoption method or to assess impact of the new standard on our results of operations or financial position.

Net Income per Share

Net Income per Share	6 Months Ended
	Jun. 30, 2019
Net Income per Share [Abstract]
Net Income per Share	Net Income per Share The computations of basic and diluted net income per share for the three and six months ended June 30, 2019 and 2018 were (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Net Income Available for Common Shares: Net income - Omnicom Group Inc. $ 370.7 $ 364.2 $ 633.9 $ 628.3 Weighted Average Shares: Basic 219.6 226.8 221.4 228.5 Dilutive stock options and restricted shares 1.3 1.3 1.1 1.3 Diluted 220.9 228.1 222.5 229.8 Anti-dilutive stock options and restricted shares 0.9 1.0 0.9 1.0 Net Income per Share - Omnicom Group Inc.: Basic $ 1.69 $ 1.61 $ 2.86 $ 2.75 Diluted $ 1.68 $ 1.60 $ 2.85 $ 2.73

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill and intangible assets at June 30, 2019 and December 31, 2018 were (in millions): 2019 2018 Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value Goodwill $ 9,878.3 $ (513.6 ) $ 9,364.7 $ 9,898.6 $ (514.3 ) $ 9,384.3 Intangible assets: Purchased and internally developed software $ 352.3 $ (298.9 ) $ 53.4 $ 356.4 $ (302.2 ) $ 54.2 Customer related and other 749.4 (449.3 ) 300.1 763.8 (435.2 ) 328.6 $ 1,101.7 $ (748.2 ) $ 353.5 $ 1,120.2 $ (737.4 ) $ 382.8 Changes in goodwill for the six months ended June 30, 2019 and 2018 were (in millions): 2019 2018 January 1 $ 9,384.3 $ 9,337.5 Acquisitions 0.5 164.9 Noncontrolling interests in acquired businesses 0.7 55.7 Contingent purchase price of acquired businesses 0.2 57.5 Dispositions (19.1 ) (0.8 ) Foreign currency translation (1.9 ) (172.2 ) June 30 $ 9,364.7 $ 9,442.6

Debt

Debt	6 Months Ended
	Jun. 30, 2019
Debt [Abstract]
Debt	Debt Credit Facilities At June 30, 2019 , our short-term liquidity sources include a $2.5 billion revolving credit facility, or Credit Facility, expiring on July 31, 2021 , uncommitted credit lines aggregating $1.5 billion and the ability to issue up to $2 billion of commercial paper. There were no outstanding commercial paper issuances or borrowings under the Credit Facility or the uncommitted credit lines at June 30, 2019 and December 31, 2018 . Available and unused credit lines at June 30, 2019 and December 31, 2018 were (in millions): 2019 2018 Credit Facility $ 2,500.0 $ 2,500.0 Uncommitted credit lines 1,488.2 1,231.6 Available and unused credit lines $ 3,988.2 $ 3,731.6 The Credit Facility contains financial covenants that require us to maintain a Leverage Ratio of consolidated indebtedness to consolidated EBITDA of no more than 3 times for the most recently ended 12-month period (EBITDA is defined as earnings before interest, taxes, depreciation and amortization) and an Interest Coverage Ratio of consolidated EBITDA to interest expense of at least 5 times for the most recently ended 12-month period. At June 30, 2019 we were in compliance with these covenants as our Leverage Ratio was 2.4 times and our Interest Coverage Ratio was 9.6 times. The Credit Facility does not limit our ability to declare or pay dividends or repurchase our common stock. Short-Term Debt In February 2019, Omnicom Finance Limited, or OFL, a wholly owned subsidiary of Omnicom, issued €520 million of short-term senior notes in a private placement to an investor outside the United States. The notes are unsecured, non-interest bearing and mature on August 14, 2019. The notes are fully and unconditionally guaranteed by Omnicom and rank equal in right of payment with all existing and future unsecured senior indebtedness of OFL. Short-term debt at June 30, 2019 and December 31, 2018 was $608.5 million and $8.1 million , respectively. Due to its short-term nature, the carrying value of the short-term debt approximates fair value. Long-Term Debt Long-term debt at June 30, 2019 and December 31, 2018 was (in millions): 2019 2018 6.25% Senior Notes due 2019 $ 500.0 $ 500.0 4.45% Senior Notes due 2020 1,000.0 1,000.0 3.625% Senior Notes due 2022 1,250.0 1,250.0 3.65% Senior Notes due 2024 750.0 750.0 3.60% Senior Notes due 2026 1,400.0 1,400.0 4,900.0 4,900.0 Unamortized premium (discount), net 4.2 4.9 Unamortized debt issuance costs (14.4 ) (16.4 ) Unamortized deferred gain from settlement of interest rate swaps 38.9 48.0 Fair value adjustment attributed to outstanding interest rate swaps (3.3 ) (52.8 ) 4,925.4 4,883.7 Current portion (899.5 ) (499.6 ) Long-term debt $ 4,025.9 $ 4,384.1 Omnicom and its wholly owned finance subsidiary, Omnicom Capital Inc., or OCI, are co-obligors under all the senior notes (other than the OFL notes). The senior notes are a joint and several liability of Omnicom and OCI, and Omnicom unconditionally guarantees OCI’s obligations with respect to the senior notes. OCI provides funding for our operations by incurring debt and lending the proceeds to our operating subsidiaries. OCI’s assets primarily consist of cash and cash equivalents and intercompany loans made to our operating subsidiaries, and the related interest receivable. There are no restrictions on the ability of OCI or Omnicom to obtain funds from our subsidiaries through dividends, loans or advances. The senior notes are senior unsecured obligations that rank equal in right of payment with all existing and future unsecured senior indebtedness. At June 30, 2019 , we recorded a long-term receivable of $4.7 million in connection with the $750 million fixed-to-floating interest rate swap on our 3.65% Senior Notes due 2024, or 2024 Notes, and a long-term liability of $8.0 million in connection with the $500 million fixed-to-floating interest rate swap on our 3.60% Senior Notes due 2026, or 2026 Notes. The receivable and liability represent the fair values of the swaps on the 2024 Notes and 2026 Notes that were substantially offset by the change in the fair values of the notes. The fixed-to-floating interest rate swaps have the economic effect of converting our debt portfolio to approximately 75% fixed rate obligations and 25% floating rate obligations. Our $500 million 6.25% Senior Notes due 2019 , or 2019 Notes, matured on July 15, 2019 and were retired. As of June 30, 2019 , the 2019 Notes were classified as current. On July 8, 2019, Omnicom Finance Holdings plc, or OFHP, a U.K. based wholly owned subsidiary of Omnicom, issued €500 million 0.80% Senior Notes due July 8, 2027 and €500 million 1.40% Senior Notes due July 8, 2031 , collectively the Euro Notes. The U.S. Dollar equivalent of the net proceeds, after deducting the underwriting discount and offering expenses, was $1.1 billion . A portion of the net proceeds was used to retire the outstanding 2019 Notes at maturity. The remaining net proceeds will be used to redeem $400 million aggregate principal amount of the outstanding $1 billion 4.45% Senior Notes due 2020, or the 2020 Notes, on August 1, 2019 and for general corporate purposes, which could include working capital expenditures and repayment of short-term or long-term debt. Omnicom and OCI have, jointly and severally, fully and unconditionally guaranteed OFHP’s obligations with respect to the Euro Notes. OFHP’s assets consist of its investments in several wholly owned finance companies that function as treasury centers, which provide funding for various operating companies in Europe, Brazil, Australia and other countries in the Asia-Pacific region. The finance companies’ assets consist of intercompany loans that they make or have made to the operating companies in their respective regions and the related interest receivables. There are no restrictions on the ability of Omnicom, OCI or OFHP to obtain funds from their subsidiaries through dividends, loans or advances. The Euro Notes and the related guarantees are senior unsecured obligations that rank equal in right of payment with all existing and future unsecured senior indebtedness of OFHP and each of Omnicom and OCI, respectively. On July 2, 2019, Omnicom announced the partial redemption of $400 million aggregate principal amount of the outstanding 2020 Notes for redemption on August 1, 2019 at a price equal to 100% of the principal amount of the 2020 Notes being redeemed plus accrued interest and a make-whole premium as specified in the indenture. At June 30, 2019 , we classified $400 million of the 2020 Notes as current.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting Our five branded agency networks operate in the advertising, marketing and corporate communications services industry, and are organized into agency networks, virtual client networks, regional reporting units and operating groups or practice areas. Our networks, virtual client networks and agencies increasingly share clients and provide clients with integrated services. The main economic components of each agency are employee compensation and related costs and direct service costs and occupancy and other costs which include rent and occupancy costs, technology costs and other overhead expenses. Therefore, given these similarities, we aggregate our operating segments, which are our five agency networks, into one reporting segment. The agency networks' regional reporting units comprise three principal regions; the Americas, EMEA and Asia-Pacific. The regional reporting units monitor the performance and are responsible for the agencies in their region. Agencies within the regional reporting units serve similar clients in similar industries and in many cases the same clients and have similar economic characteristics. Revenue and long-lived assets and goodwill by geographic region at and for the three and six months ended June 30, 2019 and 2018 were (in millions): Americas EMEA Asia-Pacific 2019 Revenue - Three months ended $ 2,215.3 $ 1,096.9 $ 407.6 Revenue - Six months ended 4,293.4 2,121.4 773.9 Long-lived assets and goodwill 7,853.9 2,985.0 640.9 2018 Revenue - Three months ended $ 2,212.5 $ 1,212.8 $ 434.3 Revenue - Six months ended 4,306.6 2,356.3 826.3 Long-lived assets and goodwill 6,825.4 2,757.9 556.5 The Americas comprises North America, which includes the United States, Canada and Puerto Rico, and Latin America, which includes South America and Mexico. EMEA comprises Europe, the Middle East and Africa. Asia-Pacific comprises Australia, China, India, Japan, Korea, New Zealand, Singapore and other Asian countries. Revenue in the United States for the three and six months ended June 30, 2019 was $2,005.2 million and $3,889.4 million , respectively, and for the three and six months ended June 30, 2018 was $1,990.8 million and $3,871.9 million , respectively. The increase in long-lived assets and goodwill from 2018 to 2019 is primarily the result of recording the operating lease right-of-use assets upon the adoption of ASC 842 on January 1, 2019 (see Note 1) partially offset by the impact of changes in the value of foreign currencies against the U.S. Dollar during the periods.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Taxes [Abstract]
Income Taxes	Income Taxes Our effective tax rate for the six months ended June 30, 2019 increased period-over-period to 25.7% from 25.2% . The effective tax rate for 2019 reflects a benefit of $10.8 million primarily from the net favorable settlements of uncertain tax positions in certain jurisdictions, which resulted in the recognition of net deferred tax assets in the second quarter of 2019 . At June 30, 2019 , our unrecognized tax benefits were $176.6 million . Of this amount, approximately $170.1 million would affect our effective tax rate upon resolution of the uncertain tax positions.

Pension and Other Postemploymen

Pension and Other Postemployment Benefits	6 Months Ended
	Jun. 30, 2019
Pension and Other Postemployment Benefits [Abstract]
Pension and Other Postemployment Benefits	Pension and Other Postemployment Benefits Defined Benefit Pension Plans The components of net periodic benefit expense for the six months ended June 30, 2019 and 2018 were (in millions): 2019 2018 Service cost $ 4.3 $ 4.0 Interest cost 3.2 3.6 Expected return on plan assets (0.7 ) (1.4 ) Amortization of prior service cost 0.4 2.2 Amortization of actuarial losses 0.5 3.3 $ 7.7 $ 11.7 We contributed $0.7 million and $1.1 million to our defined benefit pension plans in the six months ended June 30, 2019 and 2018 , respectively. Postemployment Arrangements The components of net periodic benefit expense for the six months ended June 30, 2019 and 2018 were (in millions): 2019 2018 Service cost $ 2.2 $ 2.4 Interest cost 2.2 1.8 Amortization of prior service cost 2.2 1.7 Amortization of actuarial losses 0.5 0.9 $ 7.1 $ 6.8

Repositioning Liabilities

Repositioning Liabilities	6 Months Ended
	Jun. 30, 2019
Repositioning Liabilities [Abstract]
Repositioning Liabilities	Repositioning Liabilities At June 30, 2019 and December 31, 2018 , the liability for incremental severance and office lease consolidation and termination incurred in connection with our repositioning actions taken in the third quarter of 2018 was $42.3 million and $78.9 million , respectively. We expect that substantially all the liabilities will be paid by the end of 2019 .

Supplemental Cash Flow Data

Supplemental Cash Flow Data	6 Months Ended
	Jun. 30, 2019
Supplemental Cash Flow Data [Abstract]
Supplemental Cash Flow Data	Supplemental Cash Flow Data The use of operating capital for the six months ended June 30, 2019 and 2018 was (in millions): 2019 2018 (Increase) decrease in accounts receivable $ 419.2 $ 1,173.6 (Increase) decrease in work in process and other current assets (305.0 ) (354.4 ) Increase (decrease) in accounts payable (1,044.9 ) (1,803.2 ) Increase (decrease) in customer advances, taxes payable and other current liabilities (396.2 ) (459.3 ) Change in other assets and liabilities, net 20.3 11.5 $ (1,306.6 ) $ (1,431.8 ) Income taxes paid $ 241.9 $ 276.4 Interest paid $ 119.8 $ 115.4 Supplemental non-cash information for the six months ended June 30, 2019 (in millions): Operating Leases Finance Leases Net increase in lease liability $ 1,703.8 $ 28.7

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	Leases Substantially all our operating lease right-of-use assets and operating lease liability represent leases for office space used to conduct our business. Substantially all our finance leases represent office furniture and technology equipment leases. Lease cost for the six months ended June 30, 2019 was comprised of (in millions): Six Months Ended June 30, 2019 Operating leases: Lease cost $ 157.6 Variable lease cost 16.8 Sublease income (2.7 ) Operating lease expense 171.7 Short-term lease rent expense 2.5 Finance leases: Amortization of right-of-use assets 20.7 Interest on lease liability 2.5 23.2 Total lease cost $ 197.4 The right-of-use assets at June 30, 2019 were comprised of (in millions): Real Estate Equipment Total Operating leases $ 1,410.2 $ 25.1 $ 1,435.3 Finance leases — 131.7 131.7 $ 1,410.2 $ 156.8 $ 1,567.0 The weighted average remaining lease term and the weighted average discount rate for operating and finance leases at June 30, 2019 was: Operating Leases Finance Leases Weighted average remaining lease term (years) 8.4 3.0 Weighted average discount rate 3.9 % 4.2 % The following table reconciles the undiscounted cash flows for the operating and finance leases at June 30, 2019 to the operating and finance lease liabilities recorded on the balance sheet (in millions): Operating Leases Finance Leases 2019 Remainder $ 173.0 $ 23.7 2020 317.5 44.5 2021 264.5 35.7 2022 213.2 22.1 2023 166.5 10.4 2024 145.3 4.3 Thereafter 615.3 3.0 Total undiscounted lease payments 1,895.3 143.7 Less: Imputed interest 298.3 10.1 Present value of lease payments $ 1,597.0 $ 133.6 Other current liabilities $ 279.1 $ 42.8 Long-term liability - Operating leases 1,317.9 Long-term liabilities 90.8 $ 1,597.0 $ 133.6

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 30, 2019
Commitments and Contingent Liabilities [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities In the ordinary course of business, we are involved in various legal proceedings. We do not presently expect that these proceedings will have a material adverse effect on our results of operations or financial position.

Equity

Equity	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Equity	Equity Changes in accumulated other comprehensive income (loss), net of income taxes, for the six months ended June 30, 2019 and 2018 were (in millions): 2019 Cash Flow Hedge Available-for-Sale Securities Defined Benefit Pension Plans and Postemployment Arrangements Foreign Currency Translation Total January 1 $ (22.3 ) $ — $ (69.3 ) $ (1,136.9 ) $ (1,228.5 ) Cumulative effect of accounting change (5.6 ) — (16.7 ) — (22.3 ) Other comprehensive income (loss) before reclassifications — — — 11.9 11.9 Reclassification from accumulated other comprehensive income (loss) 2.0 — 2.0 — 4.0 June 30 $ (25.9 ) $ — $ (84.0 ) $ (1,125.0 ) $ (1,234.9 ) 2018 January 1 $ (26.3 ) $ (0.3 ) $ (88.4 ) $ (848.0 ) $ (963.0 ) Other comprehensive income (loss) before reclassifications — — — (212.3 ) (212.3 ) Reclassification from accumulated other comprehensive income (loss) 2.0 0.3 5.7 — 8.0 June 30 $ (24.3 ) $ — $ (82.7 ) $ (1,060.3 ) $ (1,167.3 )

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2019
Fair Value [Abstract]
Fair Value	Fair Value Financial assets and liabilities measured at fair value on a recurring basis at June 30, 2019 and December 31, 2018 were (in millions): 2019 Level 1 Level 2 Level 3 Total Assets: Cash and cash equivalents $ 2,898.1 $ 2,898.1 Short-term investments 5.4 5.4 Marketable equity investments 1.5 1.5 Interest rate and foreign currency derivative instruments $ 4.9 4.9 Liabilities: Interest rate and foreign currency derivative instruments $ 8.4 $ 8.4 Contingent purchase price obligations $ 120.7 120.7 2018 Assets: Cash and cash equivalents $ 3,652.4 $ 3,652.4 Short-term investments 5.5 5.5 Marketable equity investments 1.5 1.5 Liabilities: Interest rate and foreign currency derivative instruments $ 52.9 $ 52.9 Contingent purchase price obligations $ 146.5 146.5 Changes in contingent purchase price obligations for the six months ended June 30, 2019 and 2018 were (in millions): 2019 2018 January 1 $ 146.5 $ 215.6 Acquisitions 1.8 79.7 Revaluation and interest 1.5 4.9 Payments (28.9 ) (51.3 ) Foreign currency translation (0.2 ) (13.6 ) June 30 $ 120.7 $ 235.3 The carrying amount and fair value of our financial assets and liabilities at June 30, 2019 and December 31, 2018 were (in millions): 2019 2018 Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents $ 2,898.1 $ 2,898.1 $ 3,652.4 $ 3,652.4 Short-term investments 5.4 5.4 5.5 5.5 Marketable equity investments 1.5 1.5 1.5 1.5 Interest rate and foreign currency derivative instruments 4.9 4.9 — — Non-marketable equity securities 10.3 10.3 11.8 11.8 Liabilities: Short-term debt $ 608.5 $ 608.5 $ 8.1 $ 8.1 Interest rate and foreign currency derivative instruments 8.4 8.4 52.9 52.9 Contingent purchase price obligations 120.7 120.7 146.5 146.5 Long-term debt, including current portion 4,925.4 5,031.3 4,883.7 4,821.3 The estimated fair value of the foreign currency and interest rate derivative instruments is determined using model-derived valuations, taking into consideration foreign currency rates for the foreign currency derivatives and readily observable inputs for LIBOR interest rates and yield curves to derive the present value of the future cash flows for the interest rate swap derivatives and counterparty credit risk for each. The estimated fair value of the contingent purchase price obligations is calculated in accordance with the terms of each acquisition agreement and is discounted. The fair value of debt is based on quoted market prices.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events We have evaluated events subsequent to the balance sheet date and determined other than as described in Note 6 above, there have not been any events that have occurred that would require adjustment to or disclosure in the consolidated financial statements.

Presentation of Financial Sta_2

Presentation of Financial Statements (Tables)	6 Months Ended
	Jun. 30, 2019
Presentation of Financial Statements [Abstract]
Impact of Adoption of ASC 842	The impact of the adoption of ASC 842 on the balance sheet at December 31, 2018 was (in millions): As Reported December 31, 2018 Adoption of ASC 842 Increase (Decrease) Balance January 1, 2019 Other current assets $ 1,241.4 $ (29.2 ) $ 1,212.2 Operating lease right-of-use assets — 1,306.5 1,306.5 Total assets 24,617.0 1,277.3 25,894.3 Other current liabilities 1,958.6 172.5 2,131.1 Long-term liability - Operating leases — 1,258.5 1,258.5 Long-term liabilities 1,197.8 (153.7 ) 1,044.1 Total liabilities and equity 24,617.0 1,277.3 25,894.3

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	Revenue in our principal geographic markets for the three and six months ended June 30, 2019 and 2018 was (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Americas: North America $ 2,118.4 $ 2,097.4 $ 4,107.6 $ 4,083.1 Latin America 96.9 115.1 185.8 223.5 EMEA: Europe 1,035.9 1,142.6 1,981.4 2,212.7 Middle East and Africa 61.0 70.2 140.0 143.6 Asia-Pacific 407.6 434.3 773.9 826.3 $ 3,719.8 $ 3,859.6 $ 7,188.7 $ 7,489.2 Revenue by discipline for the three and six months ended June 30, 2019 and 2018 was (in millions): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Advertising $ 2,093.9 $ 2,067.6 $ 4,015.3 $ 3,968.9 CRM Consumer Experience 659.5 660.0 1,265.3 1,294.9 CRM Execution & Support 326.1 498.7 675.6 1,007.2 Public Relations 349.3 362.7 683.4 709.1 Healthcare 291.0 270.6 549.1 509.1 $ 3,719.8 $ 3,859.6 $ 7,188.7 $ 7,489.2
Work in Process and Contract Liabilities	At June 30, 2019 , December 31, 2018 and June 30, 2018 work in process and contract liabilities were (in millions): June 30, 2019 December 31, 2018 June 30, 2018 Work in process: Contract assets and unbilled fees and costs $ 785.7 $ 540.1 $ 709.2 Media and production costs 577.8 621.4 644.3 $ 1,363.5 $ 1,161.5 $ 1,353.5 Contract liabilities: Customer advances $ 1,094.1 $ 1,159.0 $ 1,147.1

Net Income per Share (Tables)

Net Income per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Net Income per Share [Abstract]
Computations of Basic and Diluted Net Income per Share	The computations of basic and diluted net income per share for the three and six months ended June 30, 2019 and 2018 were (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Net Income Available for Common Shares: Net income - Omnicom Group Inc. $ 370.7 $ 364.2 $ 633.9 $ 628.3 Weighted Average Shares: Basic 219.6 226.8 221.4 228.5 Dilutive stock options and restricted shares 1.3 1.3 1.1 1.3 Diluted 220.9 228.1 222.5 229.8 Anti-dilutive stock options and restricted shares 0.9 1.0 0.9 1.0 Net Income per Share - Omnicom Group Inc.: Basic $ 1.69 $ 1.61 $ 2.86 $ 2.75 Diluted $ 1.68 $ 1.60 $ 2.85 $ 2.73

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and intangible assets at June 30, 2019 and December 31, 2018 were (in millions): 2019 2018 Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value Goodwill $ 9,878.3 $ (513.6 ) $ 9,364.7 $ 9,898.6 $ (514.3 ) $ 9,384.3 Intangible assets: Purchased and internally developed software $ 352.3 $ (298.9 ) $ 53.4 $ 356.4 $ (302.2 ) $ 54.2 Customer related and other 749.4 (449.3 ) 300.1 763.8 (435.2 ) 328.6 $ 1,101.7 $ (748.2 ) $ 353.5 $ 1,120.2 $ (737.4 ) $ 382.8
Changes in Goodwill	Changes in goodwill for the six months ended June 30, 2019 and 2018 were (in millions): 2019 2018 January 1 $ 9,384.3 $ 9,337.5 Acquisitions 0.5 164.9 Noncontrolling interests in acquired businesses 0.7 55.7 Contingent purchase price of acquired businesses 0.2 57.5 Dispositions (19.1 ) (0.8 ) Foreign currency translation (1.9 ) (172.2 ) June 30 $ 9,364.7 $ 9,442.6

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2019
Debt [Abstract]
Available and Unused Credit Lines	Available and unused credit lines at June 30, 2019 and December 31, 2018 were (in millions): 2019 2018 Credit Facility $ 2,500.0 $ 2,500.0 Uncommitted credit lines 1,488.2 1,231.6 Available and unused credit lines $ 3,988.2 $ 3,731.6
Long-Term Debt	Long-term debt at June 30, 2019 and December 31, 2018 was (in millions): 2019 2018 6.25% Senior Notes due 2019 $ 500.0 $ 500.0 4.45% Senior Notes due 2020 1,000.0 1,000.0 3.625% Senior Notes due 2022 1,250.0 1,250.0 3.65% Senior Notes due 2024 750.0 750.0 3.60% Senior Notes due 2026 1,400.0 1,400.0 4,900.0 4,900.0 Unamortized premium (discount), net 4.2 4.9 Unamortized debt issuance costs (14.4 ) (16.4 ) Unamortized deferred gain from settlement of interest rate swaps 38.9 48.0 Fair value adjustment attributed to outstanding interest rate swaps (3.3 ) (52.8 ) 4,925.4 4,883.7 Current portion (899.5 ) (499.6 ) Long-term debt $ 4,025.9 $ 4,384.1

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Revenue and Long-Lived Assets and Goodwill by Geographic Region	Revenue and long-lived assets and goodwill by geographic region at and for the three and six months ended June 30, 2019 and 2018 were (in millions): Americas EMEA Asia-Pacific 2019 Revenue - Three months ended $ 2,215.3 $ 1,096.9 $ 407.6 Revenue - Six months ended 4,293.4 2,121.4 773.9 Long-lived assets and goodwill 7,853.9 2,985.0 640.9 2018 Revenue - Three months ended $ 2,212.5 $ 1,212.8 $ 434.3 Revenue - Six months ended 4,306.6 2,356.3 826.3 Long-lived assets and goodwill 6,825.4 2,757.9 556.5

Pension and Other Postemploym_2

Pension and Other Postemployment Benefits (Tables)	6 Months Ended
	Jun. 30, 2019
Defined Benefit Pension Plans [Member]
Components of Net Periodic Benefit Expense	Defined Benefit Pension Plans The components of net periodic benefit expense for the six months ended June 30, 2019 and 2018 were (in millions): 2019 2018 Service cost $ 4.3 $ 4.0 Interest cost 3.2 3.6 Expected return on plan assets (0.7 ) (1.4 ) Amortization of prior service cost 0.4 2.2 Amortization of actuarial losses 0.5 3.3 $ 7.7 $ 11.7
Postemployment Arrangements [Member]
Components of Net Periodic Benefit Expense	Postemployment Arrangements The components of net periodic benefit expense for the six months ended June 30, 2019 and 2018 were (in millions): 2019 2018 Service cost $ 2.2 $ 2.4 Interest cost 2.2 1.8 Amortization of prior service cost 2.2 1.7 Amortization of actuarial losses 0.5 0.9 $ 7.1 $ 6.8

Supplemental Cash Flow Data (Ta

Supplemental Cash Flow Data (Tables)	6 Months Ended
	Jun. 30, 2019
Supplemental Cash Flow Data [Abstract]
Use of operating capital	The use of operating capital for the six months ended June 30, 2019 and 2018 was (in millions): 2019 2018 (Increase) decrease in accounts receivable $ 419.2 $ 1,173.6 (Increase) decrease in work in process and other current assets (305.0 ) (354.4 ) Increase (decrease) in accounts payable (1,044.9 ) (1,803.2 ) Increase (decrease) in customer advances, taxes payable and other current liabilities (396.2 ) (459.3 ) Change in other assets and liabilities, net 20.3 11.5 $ (1,306.6 ) $ (1,431.8 ) Income taxes paid $ 241.9 $ 276.4 Interest paid $ 119.8 $ 115.4

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Components of Lease Cost for Operating and Finance Leases	Lease cost for the six months ended June 30, 2019 was comprised of (in millions): Six Months Ended June 30, 2019 Operating leases: Lease cost $ 157.6 Variable lease cost 16.8 Sublease income (2.7 ) Operating lease expense 171.7 Short-term lease rent expense 2.5 Finance leases: Amortization of right-of-use assets 20.7 Interest on lease liability 2.5 23.2 Total lease cost $ 197.4
Right-of-Use Assets For Operating and Finance Leases [Table Text Block]	The right-of-use assets at June 30, 2019 were comprised of (in millions): Real Estate Equipment Total Operating leases $ 1,410.2 $ 25.1 $ 1,435.3 Finance leases — 131.7 131.7 $ 1,410.2 $ 156.8 $ 1,567.0
Weighted Average Remaining Lease Term and Weighted Average Discount Rate for Operating and Finance Leases [Table Text Block]	The weighted average remaining lease term and the weighted average discount rate for operating and finance leases at June 30, 2019 was: Operating Leases Finance Leases Weighted average remaining lease term (years) 8.4 3.0 Weighted average discount rate 3.9 % 4.2 %
Reconciliation of Undiscounted Cash Flows and Liabilities for Operating Leases	The following table reconciles the undiscounted cash flows for the operating and finance leases at June 30, 2019 to the operating and finance lease liabilities recorded on the balance sheet (in millions): Operating Leases Finance Leases 2019 Remainder $ 173.0 $ 23.7 2020 317.5 44.5 2021 264.5 35.7 2022 213.2 22.1 2023 166.5 10.4 2024 145.3 4.3 Thereafter 615.3 3.0 Total undiscounted lease payments 1,895.3 143.7 Less: Imputed interest 298.3 10.1 Present value of lease payments $ 1,597.0 $ 133.6 Other current liabilities $ 279.1 $ 42.8 Long-term liability - Operating leases 1,317.9 Long-term liabilities 90.8 $ 1,597.0 $ 133.6
Reconciliation of Undiscounted Cash Flows and Liabilities for Finance Leases	The following table reconciles the undiscounted cash flows for the operating and finance leases at June 30, 2019 to the operating and finance lease liabilities recorded on the balance sheet (in millions): Operating Leases Finance Leases 2019 Remainder $ 173.0 $ 23.7 2020 317.5 44.5 2021 264.5 35.7 2022 213.2 22.1 2023 166.5 10.4 2024 145.3 4.3 Thereafter 615.3 3.0 Total undiscounted lease payments 1,895.3 143.7 Less: Imputed interest 298.3 10.1 Present value of lease payments $ 1,597.0 $ 133.6 Other current liabilities $ 279.1 $ 42.8 Long-term liability - Operating leases 1,317.9 Long-term liabilities 90.8 $ 1,597.0 $ 133.6

Equity (Tables)

Equity (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss), net of income taxes, for the six months ended June 30, 2019 and 2018 were (in millions): 2019 Cash Flow Hedge Available-for-Sale Securities Defined Benefit Pension Plans and Postemployment Arrangements Foreign Currency Translation Total January 1 $ (22.3 ) $ — $ (69.3 ) $ (1,136.9 ) $ (1,228.5 ) Cumulative effect of accounting change (5.6 ) — (16.7 ) — (22.3 ) Other comprehensive income (loss) before reclassifications — — — 11.9 11.9 Reclassification from accumulated other comprehensive income (loss) 2.0 — 2.0 — 4.0 June 30 $ (25.9 ) $ — $ (84.0 ) $ (1,125.0 ) $ (1,234.9 ) 2018 January 1 $ (26.3 ) $ (0.3 ) $ (88.4 ) $ (848.0 ) $ (963.0 ) Other comprehensive income (loss) before reclassifications — — — (212.3 ) (212.3 ) Reclassification from accumulated other comprehensive income (loss) 2.0 0.3 5.7 — 8.0 June 30 $ (24.3 ) $ — $ (82.7 ) $ (1,060.3 ) $ (1,167.3 )

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value [Abstract]
Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	Financial assets and liabilities measured at fair value on a recurring basis at June 30, 2019 and December 31, 2018 were (in millions): 2019 Level 1 Level 2 Level 3 Total Assets: Cash and cash equivalents $ 2,898.1 $ 2,898.1 Short-term investments 5.4 5.4 Marketable equity investments 1.5 1.5 Interest rate and foreign currency derivative instruments $ 4.9 4.9 Liabilities: Interest rate and foreign currency derivative instruments $ 8.4 $ 8.4 Contingent purchase price obligations $ 120.7 120.7 2018 Assets: Cash and cash equivalents $ 3,652.4 $ 3,652.4 Short-term investments 5.5 5.5 Marketable equity investments 1.5 1.5 Liabilities: Interest rate and foreign currency derivative instruments $ 52.9 $ 52.9 Contingent purchase price obligations $ 146.5 146.5
Changes in Contingent Purchase Price Obligations	Changes in contingent purchase price obligations for the six months ended June 30, 2019 and 2018 were (in millions): 2019 2018 January 1 $ 146.5 $ 215.6 Acquisitions 1.8 79.7 Revaluation and interest 1.5 4.9 Payments (28.9 ) (51.3 ) Foreign currency translation (0.2 ) (13.6 ) June 30 $ 120.7 $ 235.3
Carrying Amount and Fair Value of Financial Assets and Liabilities	The carrying amount and fair value of our financial assets and liabilities at June 30, 2019 and December 31, 2018 were (in millions): 2019 2018 Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents $ 2,898.1 $ 2,898.1 $ 3,652.4 $ 3,652.4 Short-term investments 5.4 5.4 5.5 5.5 Marketable equity investments 1.5 1.5 1.5 1.5 Interest rate and foreign currency derivative instruments 4.9 4.9 — — Non-marketable equity securities 10.3 10.3 11.8 11.8 Liabilities: Short-term debt $ 608.5 $ 608.5 $ 8.1 $ 8.1 Interest rate and foreign currency derivative instruments 8.4 8.4 52.9 52.9 Contingent purchase price obligations 120.7 120.7 146.5 146.5 Long-term debt, including current portion 4,925.4 5,031.3 4,883.7 4,821.3

Presentation of Financial Sta_3

Presentation of Financial Statements (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Changes [Line Items]
Operating leases, liability	$ 1,597
Other current assets	1,290.9	$ 1,212.2	$ 1,241.4
Operating Lease Right-Of-Use Assets	1,435.3	1,306.5	0
Total assets	25,042.1	25,894.3	24,617
Other current liabilities	1,896.7	2,131.1	1,958.6
Long-Term Liability - Operating Leases	1,317.9	1,258.5	0
Long-Term Liabilities	975.1	1,044.1	1,197.8
Total liabilities and equity	$ 25,042.1	25,894.3	24,617
Cumulative effect of accounting change			0	$ 24
Adoption of ASC 842 Increase (Decrease)
Accounting Changes [Line Items]
Operating leases, liability		1,490.1
Other current assets		(29.2)
Operating Lease Right-Of-Use Assets		1,306.5
Total assets		1,277.3
Other current liabilities		172.5
Long-Term Liability - Operating Leases		1,258.5
Long-Term Liabilities		(153.7)
Total liabilities and equity		$ 1,277.3
Retained Earnings
Accounting Changes [Line Items]
Cumulative effect of accounting change			$ 22.3	$ 23.6

Revenue (Details)

Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 3,719.8	$ 3,859.6	$ 7,188.7	$ 7,489.2
Contract assets and unbilled fees and costs	785.7	709.2	785.7	709.2	$ 540.1
Media and production costs	577.8	644.3	577.8	644.3	621.4
Work in process:	1,363.5	1,353.5	1,363.5	1,353.5	1,161.5
Customer advances	1,094.1	1,147.1	1,094.1	1,147.1	$ 1,159
North America
Disaggregation of Revenue [Line Items]
Revenue	2,118.4	2,097.4	4,107.6	4,083.1
Latin America
Disaggregation of Revenue [Line Items]
Revenue	96.9	115.1	185.8	223.5
Europe
Disaggregation of Revenue [Line Items]
Revenue	1,035.9	1,142.6	1,981.4	2,212.7
Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue	61	70.2	140	143.6
Asia-Pacific
Disaggregation of Revenue [Line Items]
Revenue	407.6	434.3	773.9	826.3
Advertising
Disaggregation of Revenue [Line Items]
Revenue	2,093.9	2,067.6	4,015.3	3,968.9
CRM Consumer Experience
Disaggregation of Revenue [Line Items]
Revenue	659.5	660	1,265.3	1,294.9
CRM Execution & Support
Disaggregation of Revenue [Line Items]
Revenue	326.1	498.7	675.6	1,007.2
Public Relations
Disaggregation of Revenue [Line Items]
Revenue	349.3	362.7	683.4	709.1
Healthcare
Disaggregation of Revenue [Line Items]
Revenue	$ 291	$ 270.6	$ 549.1	$ 509.1

Net Income per Share (Details)

Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net Income Available for Common Shares:
Net income - Omnicom Group Inc.	$ 370.7	$ 364.2	$ 633.9	$ 628.3
Weighted Average Shares:
Basic	219.6	226.8	221.4	228.5
Dilutive stock options and restricted shares	1.3	1.3	1.1	1.3
Diluted	220.9	228.1	222.5	229.8
Anti-dilutive stock options and restricted shares	0.9	1	0.9	1
Net Income per Share - Omnicom Group Inc.:
Basic	$ 1.69	$ 1.61	$ 2.86	$ 2.75
Diluted	$ 1.68	$ 1.60	$ 2.85	$ 2.73

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Gross Carrying Value			$ 9,878.3	$ 9,898.6
Goodwill, Accumulated Amortization			(513.6)	(514.3)
Goodwill, Net Carrying Value	$ 9,364.7	$ 9,337.5	9,364.7	9,384.3
Intangible assets:
Intangible assets:, Gross Carrying Value			1,101.7	1,120.2
Intangible assets:, Accumulated Amortization			(748.2)	(737.4)
Intangible assets:, Net Carrying Value			353.5	382.8
Changes in Goodwill
Goodwill, January 1	9,384.3	9,337.5
Goodwill, Acquisitions	0.5	164.9
Goodwill, Noncontrolling interests in acquired businesses	0.7	55.7
Goodwill, Contingent purchase price of acquired businesses	0.2	57.5
Goodwill, Dispositions	(19.1)	(0.8)
Goodwill, Foreign currency translation	(1.9)	(172.2)
Goodwill, June 30	$ 9,364.7	$ 9,442.6
Purchased and internally developed software
Intangible assets:
Intangible assets:, Gross Carrying Value			352.3	356.4
Intangible assets:, Accumulated Amortization			(298.9)	(302.2)
Intangible assets:, Net Carrying Value			53.4	54.2
Customer related and other
Intangible assets:
Intangible assets:, Gross Carrying Value			749.4	763.8
Intangible assets:, Accumulated Amortization			(449.3)	(435.2)
Intangible assets:, Net Carrying Value			$ 300.1	$ 328.6

Debt (Details)

Debt (Details) € in Millions, $ in Millions	Jul. 15, 2019USD ($)	Jul. 08, 2019USD ($)	Jul. 02, 2019USD ($)	Jun. 30, 2019EUR (€)	Jul. 08, 2019EUR (€)	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Credit Facilities [Abstract]
Available and unused credit lines						$ 3,988.2	$ 3,731.6
Short-Term Borrowings [Abstract]
Short-term debt						608.5	8.1
Long-Term Debt [Abstract]
Long-term debt, carrying amount						4,900	4,900
Unamortized premium (discount), net						4.2	4.9
Unamortized debt issuance costs						(14.4)	(16.4)
Unamortized deferred gain from settlement of interest rate swaps						38.9	48
Fair value adjustment attributed to outstanding interest rate swaps						(3.3)	(52.8)
Long-term debt, total						4,925.4	4,883.7
Long-term debt, current portion						899.5	499.6
Long-Term Debt						4,025.9	4,384.1
Interest Rate Swaps on 2024 Notes [Member]
Long-Term Debt [Abstract]
Interest rate swaps, asset, at fair value						4.7
Interest rate swaps, notional amount						750
Interest Rate Swaps on 2026 Notes [Member]
Long-Term Debt [Abstract]
Interest rate swaps, liability, at fair value						8
Interest rate swaps, notional amount						500
Credit Facility
Credit Facilities [Abstract]
Credit Facility, maximum borrowing capacity						2,500
Credit Facility, expiration date				Jul. 31, 2021
Available and unused credit lines						2,500	2,500
Credit Facility, covenant terms				The Credit Facility contains financial covenants that require us to maintain a Leverage Ratio of consolidated indebtedness to consolidated EBITDA of no more than 3 times for the most recently ended 12-month period (EBITDA is defined as earnings before interest, taxes, depreciation and amortization) and an Interest Coverage Ratio of consolidated EBITDA to interest expense of at least 5 times for the most recently ended 12-month period.
Credit Facility, covenant compliance				At June 30, 2019 we were in compliance with these covenants as our Leverage Ratio was 2.4 times and our Interest Coverage Ratio was 9.6 times.
Commercial Paper [Member]
Credit Facilities [Abstract]
Credit Facility, maximum borrowing capacity						2,000
Uncommitted credit lines
Credit Facilities [Abstract]
Available and unused credit lines						1,488.2	1,231.6
Short-term Senior Notes
Short-Term Borrowings [Abstract]
Short-term debt | €				€ 520
6.25% Senior Notes due 2019
Long-Term Debt [Abstract]
Long-term debt, carrying amount						$ 500	500
Long-term debt, interest rate				6.25%		6.25%
Long-term debt, maturity date				Jul. 15, 2019
4.45% Senior Notes due 2020
Long-Term Debt [Abstract]
Long-term debt, carrying amount						$ 1,000	1,000
Long-term debt, current portion						$ 400
Long-term debt, interest rate				4.45%		4.45%
Long-term debt, maturity date				Aug. 15, 2020
3.625% Senior Notes due 2022
Long-Term Debt [Abstract]
Long-term debt, carrying amount						$ 1,250	1,250
Long-term debt, interest rate				3.625%		3.625%
Long-term debt, maturity date				May 1, 2022
3.65% Senior Notes due 2024
Long-Term Debt [Abstract]
Long-term debt, carrying amount						$ 750	750
Long-term debt, interest rate				3.65%		3.65%
Long-term debt, maturity date				Nov. 1, 2024
3.60% Senior Notes due 2026
Long-Term Debt [Abstract]
Long-term debt, carrying amount						$ 1,400	$ 1,400
Long-term debt, interest rate				3.60%		3.60%
Long-term debt, maturity date				Apr. 15, 2026
Subsequent Event [Member]
Long-Term Debt [Abstract]
Long-term debt, proceeds from issuance		$ 1,100
Long-term debt, redemption date			Aug. 1, 2019
Subsequent Event [Member] | 6.25% Senior Notes due 2019
Long-Term Debt [Abstract]
Long-term debt, amount retired	$ 500
Subsequent Event [Member] | 4.45% Senior Notes due 2020
Long-Term Debt [Abstract]
Long-term debt, amount called for redemption			$ 400
Subsequent Event [Member] | 0.800% Senior Notes due 2027
Long-Term Debt [Abstract]
Long-term debt, carrying amount | €					€ 500
Long-term debt, interest rate					0.80%
Long-term debt, maturity date		Jul. 8, 2027
Subsequent Event [Member] | 1.400% Senior Notes due 2031
Long-Term Debt [Abstract]
Long-term debt, carrying amount | €					€ 500
Long-term debt, interest rate					1.40%
Long-term debt, maturity date		Jul. 8, 2031

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	$ 3,719.8	$ 3,859.6	$ 7,188.7	$ 7,489.2
Americas
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	2,215.3	2,212.5	4,293.4	4,306.6
Long-lived assets and goodwill	7,853.9	6,825.4	7,853.9	6,825.4
United States
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	2,005.2	1,990.8	3,889.4	3,871.9
EMEA
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	1,096.9	1,212.8	2,121.4	2,356.3
Long-lived assets and goodwill	2,985	2,757.9	2,985	2,757.9
Asia-Pacific
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	407.6	434.3	773.9	826.3
Long-lived assets and goodwill	$ 640.9	$ 556.5	$ 640.9	$ 556.5

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Abstract]
Effective tax rate		25.70%	25.20%
Income tax benefit, primarily from the net favorable settlements of uncertain tax positions	$ 10.8
Unrecognized tax benefits		$ 176.6
Unrecognized tax benefits that would impact effective tax rate		$ 170.1

Pension and Other Postemploym_3

Pension and Other Postemployment Benefits (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Defined Benefit Pension Plans [Member]
Components of Net Periodic Benefit Expense
Service cost	$ 4.3	$ 4
Interest cost	3.2	3.6
Expected return on plan assets	(0.7)	(1.4)
Amortization of prior service cost	0.4	2.2
Amortization of actuarial losses	0.5	3.3
Net periodic benefit expense	7.7	11.7
Employer contributions	0.7	1.1
Postemployment Arrangements [Member]
Components of Net Periodic Benefit Expense
Service cost	2.2	2.4
Interest cost	2.2	1.8
Amortization of prior service cost	2.2	1.7
Amortization of actuarial losses	0.5	0.9
Net periodic benefit expense	$ 7.1	$ 6.8

Repositioning Liabilities (Deta

Repositioning Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Repositioning Liabilities [Abstract]
Repositioning Liabilities	$ 42.3	$ 78.9

Supplemental Cash Flow Data (De

Supplemental Cash Flow Data (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Change in Operating Capital [Abstract]
(Increase) decrease in accounts receivable	$ 419.2	$ 1,173.6
(Increase) decrease in work in process and other current assets	(305)	(354.4)
Increase (decrease) in accounts payable	(1,044.9)	(1,803.2)
Increase (decrease) in customer advances, taxes payable and other current liabilities	(396.2)	(459.3)
Change in other assets and liabilities, net	20.3	11.5
Use of operating capital	(1,306.6)	(1,431.8)
Income taxes paid	241.9	276.4
Interest paid	119.8	$ 115.4
Operating Leases, Net increase in lease liability	1,703.8
Finance Leases, Net increase in lease liability	$ 28.7

Leases (Details)

Leases (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Lease Cost [Abstract]
Operating leases, Lease cost	$ 157.6
Operating leases, Variable lease cost	16.8
Operating leases, Sublease income	(2.7)
Operating lease expense	171.7
Short-term lease rent expense	2.5
Finance leases, Amortization of right-of-use assets	20.7
Finance leases, Interest on lease liability	2.5
Finance leases, Total lease cost	23.2
Total lease cost	197.4
Right-of-Use Assets [Abstract]
Operating lease, right-of-use assets	1,435.3	$ 1,306.5	$ 0
Finance lease, right-of-use assets	131.7
Leases, right-of-use assets	$ 1,567
Weighted Average Remaining Lease Term and Weighted Average Discount Rate [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	8 years 4 months 24 days
Operating Lease, Weighted Average Discount Rate	3.90%
Finance Lease, Weighted Average Remaining Lease Term	3 years
Finance Lease, Weighted Average Discount Rate	4.20%
Reconciliation of Undiscounted Cash Flows and Liabilities for Operating and Finance Leases [Abstract]
Operating Leases Payments, 2019 Remainder	$ 173
Operating Leases Payments, 2020	317.5
Operating Leases Payments, 2021	264.5
Operating Leases Payments, 2022	213.2
Operating Leases Payments, 2023	166.5
Operating Leases Payments, 2024	145.3
Operating Leases Payments, Thereafter	615.3
Operating Leases, Total undiscounted lease payments	1,895.3
Operating Leases, Less: Imputed interest	298.3
Operating Leases, Present value of lease payments	1,597
Finance Leases Payments, 2019 Remainder	23.7
Finance Leases Payments, 2020	44.5
Finance Leases Payments, 2021	35.7
Finance Leases Payments, 2022	22.1
Finance Leases Payments, 2023	10.4
Finance Leases Payments, 2024	4.3
Finance Leases Payments, Thereafter	3
Finance Leases, Total undiscounted lease payments	143.7
Finance Leases, Less: Imputed interest	10.1
Finance Leases, Present value of lease payments	133.6
Lease Liabilities Recorded on Balance Sheet [Abstract]
Operating Leases Liability, Other Current Liabilities	$ 279.1
Operating Leases Liability, Current, Balance Sheet Location	us-gaap:OtherLiabilitiesCurrent
Long-Term Liability - Operating Leases	$ 1,317.9	$ 1,258.5	$ 0
Operating Lease Liability, Long-term, Balance Sheet Location	us-gaap:OperatingLeaseLiabilityNoncurrent
Finance Leases Liability, Other Current Liabilities	$ 42.8
Finance Leases Liability, Current, Balance Sheet Location	us-gaap:OtherLiabilitiesCurrent
Finance Leases Liability, Long-term liabilities	$ 90.8
Finance Leases Liability, Long-term, Balance Sheet Location	us-gaap:OtherLiabilitiesNoncurrent
Real Estate Lease [Member]
Right-of-Use Assets [Abstract]
Operating lease, right-of-use assets	$ 1,410.2
Finance lease, right-of-use assets	0
Leases, right-of-use assets	1,410.2
Equipment Lease [Member]
Right-of-Use Assets [Abstract]
Operating lease, right-of-use assets	25.1
Finance lease, right-of-use assets	131.7
Leases, right-of-use assets	$ 156.8

Equity (Details)

Equity (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	$ (1,228.5)	$ (963)
Cumulative effect of accounting change	(22.3)
Other comprehensive income (loss) before reclassifications	11.9	(212.3)
Reclassification from accumulated other comprehensive income (loss)	4	8
June 30	(1,234.9)	(1,167.3)
Cash Flow Hedge
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(22.3)	(26.3)
Cumulative effect of accounting change	(5.6)
Other comprehensive income (loss) before reclassifications	0	0
Reclassification from accumulated other comprehensive income (loss)	2	2
June 30	(25.9)	(24.3)
Available-for-Sale Securities
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	0	(0.3)
Cumulative effect of accounting change	0
Other comprehensive income (loss) before reclassifications	0	0
Reclassification from accumulated other comprehensive income (loss)	0	0.3
June 30	0	0
Defined Benefit Pension Plans and Postemployment Arrangements
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(69.3)	(88.4)
Cumulative effect of accounting change	(16.7)
Other comprehensive income (loss) before reclassifications	0	0
Reclassification from accumulated other comprehensive income (loss)	2	5.7
June 30	(84)	(82.7)
Foreign Currency Translation
Changes in Accumulated Other Comprehensive Income (Loss)
January 1	(1,136.9)	(848)
Cumulative effect of accounting change	0
Other comprehensive income (loss) before reclassifications	11.9	(212.3)
Reclassification from accumulated other comprehensive income (loss)	0	0
June 30	$ (1,125)	$ (1,060.3)

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Assets:
Cash and cash equivalents	$ 2,898.1		$ 3,652.4
Short-term investments	5.4		5.5
Marketable equity investments	1.5		1.5
Interest rate and foreign currency derivative instruments	4.9		0
Non-marketable equity securities	10.3		11.8
Liabilities:
Short-term debt	608.5		8.1
Interest rate and foreign currency derivative instruments	8.4		52.9
Contingent purchase price obligations	120.7		146.5
Long-term debt, including current portion	5,031.3		4,821.3
Carrying Amount
Assets:
Cash and cash equivalents	2,898.1		3,652.4
Short-term investments	5.4		5.5
Marketable equity investments	1.5		1.5
Interest rate and foreign currency derivative instruments	4.9		0
Non-marketable equity securities	10.3		11.8
Liabilities:
Short-term debt	608.5		8.1
Interest rate and foreign currency derivative instruments	8.4		52.9
Contingent purchase price obligations	120.7		146.5
Long-term debt, including current portion	4,925.4		4,883.7
Contingent purchase price obligations
Changes in Contingent Purchase Price Obligations [Roll Forward]
January 1	146.5	$ 215.6
Acquisitions	1.8	79.7
Revaluation and interest	1.5	4.9
Payments	(28.9)	(51.3)
Foreign currency translation	(0.2)	(13.6)
June 30	120.7	$ 235.3
Fair Value, Recurring [Member]
Assets:
Cash and cash equivalents	2,898.1		3,652.4
Short-term investments	5.4		5.5
Marketable equity investments	1.5		1.5
Interest rate and foreign currency derivative instruments	4.9
Liabilities:
Interest rate and foreign currency derivative instruments	8.4		52.9
Contingent purchase price obligations	120.7		146.5
Fair Value, Recurring [Member] | Level 1
Assets:
Cash and cash equivalents	2,898.1		3,652.4
Short-term investments	5.4		5.5
Marketable equity investments	1.5		1.5
Fair Value, Recurring [Member] | Level 2
Assets:
Interest rate and foreign currency derivative instruments	4.9
Liabilities:
Interest rate and foreign currency derivative instruments	8.4		52.9
Fair Value, Recurring [Member] | Level 3
Liabilities:
Contingent purchase price obligations	$ 120.7		$ 146.5