Omnicom (OMC) 10-Q 20 Oct 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 15, 2015
Document Information [Line Items]
Entity Registrant Name	OMNICOM GROUP INC.
Entity Central Index Key	29,989
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		242,255,205

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 1,427.5	$ 2,388.1
Short-term investments, at cost	2.5	2.2
Accounts receivable, net of allowance for doubtful accounts of $21.4 and $24.9	6,313.9	6,524.7
Work in process	1,455.3	1,166.6
Other current assets	1,053.6	1,108.9
Total Current Assets	10,252.8	11,190.5
Property and Equipment at cost, less accumulated depreciation of $1,227.5 and $1,221.2	691.3	708
Equity Method Investments	136.5	148.2
Goodwill	8,682.7	8,822.2
Intangible Assets, net of accumulated amortization of $662.1 and $611.4	338.9	389.4
Other Assets	355.1	301.4
TOTAL ASSETS	20,457.3	21,559.7
Current Liabilities:
Accounts payable	8,336.5	8,797.5
Customer advances	1,181.6	1,180.9
Current portion of debt	1,003.4	0.4
Short-term borrowings	9.7	7.2
Taxes payable	240.7	301.1
Other current liabilities	1,615	1,774
Total Current Liabilities	12,386.9	12,061.1
Long-Term Notes Payable	3,602.2	4,562.6
Long-Term Liabilities	772.6	774.3
Long-Term Deferred Tax Liabilities	$ 613.5	$ 654.7
Commitments and Contingent Liabilities (See Note 11)
Temporary Equity - Redeemable Noncontrolling Interests	$ 178.5	$ 185.7
Shareholders’ Equity:
Preferred stock	0	0
Common stock	59.6	59.6
Additional paid-in capital	857.3	818.6
Retained earnings	9,968.8	9,576.9
Accumulated other comprehensive income (loss)	(981.6)	(618.2)
Treasury stock, at cost	(7,426.1)	(6,986.9)
Total Shareholders’ Equity	2,478	2,850
Noncontrolling interests	425.6	471.3
Total Equity	2,903.6	3,321.3
TOTAL LIABILITIES AND EQUITY	$ 20,457.3	$ 21,559.7

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Allowance for doubtful accounts	$ 21.4	$ 24.9
Accumulated depreciation	1,227.5	1,221.2
Intangible assets, accumulated amortization	$ 662.1	$ 611.4

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue	$ 3,706.6	$ 3,749.6	$ 10,981.1	$ 11,122.7
Operating Expenses	3,278.3	3,316	9,636.5	9,758
Operating Income	428.3	433.6	1,344.6	1,364.7
Interest Expense	45.6	42.2	134	135.4
Interest Income	9.7	10.8	29.3	31.3
Income Before Income Taxes and Income From Equity Method Investments	392.4	402.2	1,239.9	1,260.6
Income Tax Expense	128.9	134.4	406.9	410.9
Income From Equity Method Investments	3.2	5.8	6.2	10.4
Net Income	266.7	273.6	839.2	860.1
Net Income Attributed To Noncontrolling Interests	27.4	29.8	76.9	85.6
Net Income - Omnicom Group Inc.	$ 239.3	$ 243.8	$ 762.3	$ 774.5
Net Income Per Share - Omnicom Group Inc.:
Basic	$ 0.97	$ 0.95	$ 3.08	$ 2.97
Diluted	0.97	0.95	3.06	2.95
Dividends Declared Per Common Share	$ 0.50	$ 0.50	$ 1.50	$ 1.40

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Income	$ 266.7	$ 273.6	$ 839.2	$ 860.1
Unrealized loss on cash flow hedge, net of income taxes of ($21.2) for the three months and ($6.6) for the nine months ended September 30, 2015	(29.7)	0	(9.2)	0
Unrealized gain on available-for-sale securities, net of income taxes of $0.0 and $0.0 for the three months and $0.1 and $0.2 for the nine months ended September 30, 2015 and 2014, respectively	0.1	0.1	0.3	0.3
Foreign currency translation adjustment, net of income taxes of ($109.4) and ($181.7) for the three months and ($203.7) and ($128.4) for the nine months ended September 30, 2015 and 2014, respectively	(212.6)	(352.6)	(395.7)	(249.3)
Defined benefit pension and postemployment plans adjustment, net of income taxes of $1.4 and $0.9 for the three months and $4.4 and $2.7 for the nine months ended September 30, 2015 and 2014, respectively	2.2	1.3	6.6	4.1
Other Comprehensive Income (Loss)	(240)	(351.2)	(398)	(244.9)
Comprehensive Income (Loss)	26.7	(77.6)	441.2	615.2
Comprehensive Income (Loss) Attributed to Noncontrolling Interests	9.8	2.2	42.3	69.2
Comprehensive Income (Loss) - Omnicom Group Inc.	$ 16.9	$ (79.8)	$ 398.9	$ 546

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Unrealized gain (loss) on cash flow hedge, income taxes	$ (21.2)	$ 0	$ (6.6)	$ 0
Unrealized gain on available-for-sale securities, income taxes	0	0	0.1	0.2
Foreign currency translation adjustment, income taxes	(109.4)	(181.7)	(203.7)	(128.4)
Defined benefit pension and postemployment plans adjustment, income taxes	$ 1.4	$ 0.9	$ 4.4	$ 2.7

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities:
Net Income	$ 839.2	$ 860.1
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation	137.9	140.3
Amortization of intangible assets	80.8	77.1
Share-based compensation	75.4	69.5
Excess tax benefit from share-based compensation	(22.8)	(20.2)
Other, net	1.1	(1.8)
Change in operating capital	(670.8)	(1,091.9)
Net Cash Provided By Operating Activities	440.8	33.1
Cash Flows from Investing Activities:
Capital expenditures	(145.6)	(138.3)
Acquisition of businesses and interests in affiliates, net of cash acquired	(36.2)	(65.3)
Other, net	13.1	6.5
Net Cash Used In Investing Activities	(168.7)	(197.1)
Cash Flows from Financing Activities:
Proceeds from short-term debt	3.6	27.3
Redemption of convertible debt	0	252.7
Dividends paid to common shareholders	(373.9)	(340.7)
Repurchases of common stock	(507.9)	(864.8)
Proceeds from stock plans	11.4	14.6
Acquisition of additional noncontrolling interests	(7.7)	(22)
Dividends paid to noncontrolling interest shareholders	(86.7)	(83.2)
Payment of contingent purchase price obligations	(55.6)	(74.5)
Excess tax benefit on share-based compensation	22.8	20.2
Other, net	(28)	(21.7)
Net Cash Used In Financing Activities	(1,022)	(1,597.5)
Effect of foreign exchange rate changes on cash and cash equivalents	(210.7)	(111.3)
Net Decrease in Cash and Cash Equivalents	(960.6)	(1,872.8)
Cash and Cash Equivalents at the Beginning of Period	2,388.1	2,710.5
Cash and Cash Equivalents at the End of Period	$ 1,427.5	$ 837.7

Presentation of Financial State

Presentation of Financial Statements	9 Months Ended
	Sep. 30, 2015
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 our subsidiaries, unless the context indicates otherwise. The accompanying unaudited condensed consolidated financial statements were prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP” or “GAAP”) for interim financial information and Article 10 of Regulation S-X of the Securities and Exchange Commission. Accordingly, certain information and footnote disclosure have been condensed or omitted. In our opinion, the accompanying unaudited condensed 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. Certain reclassifications have been made to the prior year financial information to conform to the current year presentation. These unaudited condensed consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2014 (“ 2014 10-K”). Results for the interim periods are not necessarily indicative of results that may be expected for the year.

New Accounting Standards

New Accounting Standards	9 Months Ended
	Sep. 30, 2015
New Accounting Standards [Abstract]
New Accounting Standards	New Accounting Standards In May 2014, the FASB issued FASB ASU 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”) , which replaces all existing revenue recognition guidance under U.S. GAAP. On July 9, 2015, the FASB board approved a one year deferral of the effective date of ASU 2014-09 for all annual and interim reporting periods beginning December 15, 2017 and permits early application for all annual and interim periods beginning after December 15, 2016. ASU 2014-09 provides for one of two methods of transition: retrospective application to each prior period presented or recognition of the cumulative effect of retrospective application of the new standard in the period of initial application. The FASB has proposed further amendments to ASU 2014-09 for certain technical changes. Presently, we are not yet in a position to assess the application date, the transition method we will choose or the impact of the application on our results of operations or financial position. In February 2015, the FASB issued FASB ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis (“ASU 2015-02”) , which changes the consolidation analysis for both the variable interest model and for the voting model for limited partnerships and similar entities. ASU 2015-02 is effective for annual and interim periods beginning after December 15, 2015 and early application is permitted. ASU 2015-02 provides for one of two methods of transition: retrospective application to each prior period presented or recognition of the cumulative effect of retrospective application of the new standard in the period of initial application. We will apply ASU 2015-02 on January 1, 2016 and we do not expect that the application of the new standard will have a significant impact on our results of operations or financial position. In April 2015, the FASB issued FASB ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”), which requires that debt issuance costs be presented in the balance sheet as a direct reduction from the carrying amount of debt. ASU 2015-03 is effective for annual and interim periods beginning after December 15, 2015 and early application is permitted and requires retrospective application to each prior period presented. ASU 2015-03 only affects the presentation of debt issuance costs in the balance sheet and has no impact on results of operations. We will apply ASU 2015-03 on January 1, 2016 and we do not expect that the application of the new standard will have any impact on our results of operations or financial position.

Net Income Per Common Share

Net Income Per Common Share	9 Months Ended
	Sep. 30, 2015
Net Income per Common Share [Abstract]
Net Income per Common Share	Net Income per Common Share The computation of basic and diluted net income per common share for the three and nine months ended September 30, 2015 and 2014 is (in millions, except per share amounts): Three Months Nine Months 2015 2014 2015 2014 Net Income Available for Common Shares: Net income - Omnicom Group Inc. $ 239.3 $ 243.8 $ 762.3 $ 774.5 Net income allocated to participating securities (2.5 ) (4.3 ) (9.0 ) (14.7 ) $ 236.8 $ 239.5 $ 753.3 $ 759.8 Weighted Average Shares: Basic 243.2 251.4 244.7 255.6 Dilutive stock options and restricted shares 1.2 1.0 1.1 1.7 Diluted 244.4 252.4 245.8 257.3 Anti-dilutive stock options and restricted shares 0.1 — 0.1 — Net Income per Common Share - Omnicom Group Inc.: Basic $ 0.97 $ 0.95 $ 3.08 $ 2.97 Diluted $ 0.97 $ 0.95 $ 3.06 $ 2.95

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill and intangible assets at September 30, 2015 and December 31, 2014 were (in millions): 2015 2014 Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value Goodwill $ 9,219.2 $ (536.5 ) $ 8,682.7 $ 9,377.6 $ (555.4 ) $ 8,822.2 Intangible assets: Purchased and internally developed software $ 309.2 $ (238.1 ) $ 71.1 $ 298.7 $ (221.4 ) $ 77.3 Customer related and other 691.8 (424.0 ) 267.8 702.1 (390.0 ) 312.1 $ 1,001.0 $ (662.1 ) $ 338.9 $ 1,000.8 $ (611.4 ) $ 389.4 We evaluate goodwill for impairment at least annually at the end of the second quarter of the year and whenever events or circumstances indicate the carrying value may not be recoverable. At June 30, 2015 , we performed Step 1 of the annual impairment test and compared the fair value of each of our reporting units to its respective carrying value, including goodwill. Based on the results of our impairment test, we concluded that our goodwill was not impaired at June 30, 2015 because the fair value of each of our reporting units was substantially in excess of its respective net book value. Changes in goodwill for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 January 1 $ 8,822.2 $ 8,916.0 Acquisitions 88.3 131.4 Dispositions (2.9 ) (1.6 ) Foreign currency translation (224.8 ) (170.6 ) September 30 $ 8,682.7 $ 8,875.2 There were no goodwill impairment losses recorded in the first nine months of 2015 or 2014 and there are no accumulated goodwill impairment losses. Goodwill for acquisitions completed in 2015 and 2014 includes $4.5 million and $27.6 million , respectively, of goodwill attributed to noncontrolling interests in the acquired businesses.

Debt

Debt	9 Months Ended
	Sep. 30, 2015
Debt [Abstract]
Debt	Debt Credit Lines On July 31, 2015, we extended the maturity of our $2.5 billion revolving credit facility (“Credit Agreement”) to July 31, 2020 . In addition to the Credit Agreement, we can issue up to $2 billion of commercial paper and we have domestic and international uncommitted credit lines aggregating $1.3 billion and $937.8 million at September 30, 2015 and December 31, 2014 , respectively. At September 30, 2015 and December 31, 2014 there were no outstanding commercial paper issuances or borrowings under the Credit Agreement and the uncommitted credit lines. Available and unused credit lines at September 30, 2015 and December 31, 2014 were (in millions): 2015 2014 Credit Agreement $ 2,500.0 $ 2,500.0 Uncommitted credit lines 1,267.7 937.8 Available and unused credit lines $ 3,767.7 $ 3,437.8 The Credit Agreement 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 September 30, 2015 we were in compliance with these covenants as our Leverage Ratio was 2.1 times and our Interest Coverage Ratio was 12.6 times. The Credit Agreement does not limit our ability to declare or pay dividends or repurchase our common stock. Short-Term Borrowings Short-term borrowings of $9.7 million and $7.2 million at September 30, 2015 and December 31, 2014 , respectively, represent bank overdrafts and credit lines of our international subsidiaries. These borrowings are treated as unsecured loans pursuant to the agreements supporting the facilities. Due to the short-term nature of these borrowings, carrying value approximates fair value. Long-Term Notes Payable Long-term notes payable at September 30, 2015 and December 31, 2014 were (in millions): 2015 2014 5.9% Senior Notes due 2016 $ 1,000.0 $ 1,000.0 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 Other notes and loans 0.4 0.5 4,500.4 4,500.5 Unamortized premium (discount) on Senior Notes, net 10.4 11.1 Adjustment to carrying value for interest rate swaps 94.8 51.4 4,605.6 4,563.0 Current portion of debt (1,003.4 ) (0.4 ) Long-term notes payable $ 3,602.2 $ 4,562.6 In connection with the maturity of our $1 billion 5.9% Senior Notes on April 15, 2016 (“2016 Notes”), on March 26, 2015 , we entered into a $1 billion receive floating (three month LIBOR) pay fixed ( 2.3209% ) forward-starting 10-year interest rate swap. The swap mitigates the risk of changes in the semi-annual interest payments during the period from March 26, 2015 to May 2, 2016 , the contractual termination date of the swap, and effectively locks in the fixed interest rate, excluding the effect of our credit spread, on any refinancing of the 2016 Notes. The swap is designated as a cash flow hedge of the semi-annual interest rate payments attributable to changes in the benchmark interest rate. We expect that the swap will have almost no ineffectiveness and is carried on the balance sheet at fair value. Any net gain or loss on the swap is recorded in accumulated other comprehensive income. Upon termination of the swap, any gain or loss will be amortized to interest expense over the life of the new debt or will be recorded in our results of operations if the refinancing is not completed. At September 30, 2015 , we recorded a liability of $15.8 million , which is included in other current liabilities and the related loss of $9.2 million , net of income taxes, is recorded in other comprehensive income. The 2016 Notes are classified as current. In 2014 , we entered into receive fixed pay floating interest rate swaps on the $1.25 billion principal amount of our 3.625% Senior Notes due 2022 (“2022 Notes”) and on the $1 billion principal amount of our 4.45% Senior Notes due 2020 (“2020 Notes”). The interest rate swaps hedge the risk of changes in fair value of the 2022 Notes and the 2020 Notes attributable to changes in the benchmark LIBOR interest rate. Under the swap contracts, we receive fixed interest rate payments equal to the coupon interest rate on the 2022 Notes and the 2020 Notes and pay a variable interest rate on the total principal amount of the notes, equal to three month LIBOR in arrears, plus a spread of 1.05% on the 2022 Notes and a spread of 2.16% on the 2020 Notes. The swaps qualify and are designated as fair value hedges on the 2022 Notes and 2020 Notes and have the economic effect of converting the 2022 Notes and the 2020 Notes from fixed rate debt to floating rate debt. Gains and losses attributed to changes in the fair value of the interest rate swaps substantially offset changes in the fair value of the 2022 Notes and the 2020 Notes attributed to changes in the benchmark interest rate. The net interest settlement is recorded in interest expense. At September 30, 2015 and December 31, 2014 , we recorded a receivable, which is included in other assets, of $91.5 million and $42.7 million , respectively, representing the fair value of the swaps that was substantially offset by the increase in the carrying value of the 2022 Notes and the 2020 Notes reflecting the change in fair value of the notes. Accordingly, any hedge ineffectiveness was not material to our results of operations.

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2015
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. 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. The main economic components of each agency are employee compensation and related costs and direct service costs and office and general 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. Revenue and long-lived assets and goodwill by geographic area as of and for the periods ended September 30, 2015 and 2014 were (in millions): Americas EMEA Asia Pacific 2015 Revenue - Three months ended $ 2,292.0 $ 1,027.8 $ 386.8 Revenue - Nine months ended 6,807.1 3,035.9 1,138.1 Long-lived assets and goodwill 6,107.8 2,750.4 515.8 2014 Revenue - Three months ended $ 2,224.4 $ 1,119.5 $ 405.7 Revenue - Nine months ended 6,600.9 3,355.1 1,166.7 Long-lived assets and goodwill 6,103.9 2,902.1 582.8 The Americas comprises North America, which includes the United States, Canada and Puerto Rico, and Latin America, which includes Mexico. EMEA comprises the United Kingdom, the Euro currency countries, other European countries that have not adopted the European Union Monetary standard, 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 months ended September 30, 2015 and 2014 was $2,098.5 million and $2,004.3 million , respectively, and for the nine months ended September 30, 2015 and 2014 was $6,203.0 million and $5,937.4 million , respectively.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2015
Income Taxes [Abstract]
Income Taxes	Income Taxes Our effective tax rate for the nine months ended September 30, 2015 increased to 32.8% from 32.6% for the nine months ended September 30, 2014 . The effective tax rate for the nine months ended September 30, 2014 reflects the recognition of an income tax benefit of approximately $11 million related to previously incurred expenses for the proposed merger with Publicis Groupe S.A. (“Publicis”). On May 8, 2014, the proposed merger was terminated. Prior to the termination of the merger, the majority of the merger costs, which were incurred in 2013, were capitalized for income tax purposes and the related tax benefits were not recorded. Because the merger was terminated, the merger costs were no longer required to be capitalized for income tax purposes. Excluding the income tax benefit of $11 million related to the proposed merger, the effective tax rate for the first nine months of 2014 was 33.5% . The decrease in the effective tax rate for the nine months ended September 30, 2015 from the effective tax rate for the nine months ended September 30, 2014 excluding the income tax benefit related to the proposed merger, is primarily due to a legal entity restructuring of our European operations. As a result of the reorganization, a certain portion of the foreign earnings in the affected countries is subject to lower effective tax rates. At September 30, 2015 , our net unrecognized tax benefits were $60.9 million . Of this amount, approximately $50.8 million would affect our effective tax rate upon resolution of the uncertain tax positions.

Pension and Other Postemploymen

Pension and Other Postemployment Benefits	9 Months Ended
	Sep. 30, 2015
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 cost for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 Service cost $ 3.7 $ 5.5 Interest cost 5.2 5.5 Expected return on plan assets (2.3 ) (2.2 ) Amortization of prior service cost 3.1 3.2 Amortization of actuarial (gains) losses 4.3 1.4 $ 14.0 $ 13.4 We contributed $0.8 million and $0.7 million to our defined benefit pension plans in the nine months ended September 30, 2015 and 2014 , respectively. Postemployment Arrangements The components of net periodic benefit cost for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 Service cost $ 3.6 $ 3.0 Interest cost 3.2 3.3 Amortization of prior service cost 2.4 1.6 Amortization of actuarial (gains) losses 1.2 0.6 $ 10.4 $ 8.5

Operating Expenses

Operating Expenses	9 Months Ended
	Sep. 30, 2015
Operating Expenses [Abstract]
Operating Expenses	Operating Expenses Operating expenses for the three and nine months ended September 30, 2015 and 2014 were (in millions): Three Months Nine Months 2015 2014 2015 2014 Salary and service costs $ 2,832.6 $ 2,813.2 $ 8,243.1 $ 8,230.7 Office and general expenses 445.7 502.8 1,393.4 1,527.3 $ 3,278.3 $ 3,316.0 $ 9,636.5 $ 9,758.0

Supplemental Cash Flow Data

Supplemental Cash Flow Data	9 Months Ended
	Sep. 30, 2015
Supplemental Cash Flow Data [Abstract]
Supplemental Cash Flow Data	Supplemental Cash Flow Data The change in operating capital for the nine months ended September 30, 2015 and 2014 was (in millions): 2015 2014 (Increase) decrease in accounts receivable $ (67.4 ) $ 333.4 (Increase) decrease in work in process and other current assets (367.0 ) (333.5 ) Increase (decrease) in accounts payable (132.2 ) (724.2 ) Increase (decrease) in customer advances and other current liabilities (68.1 ) (252.1 ) Change in other assets and liabilities, net (36.1 ) (115.5 ) $ (670.8 ) $ (1,091.9 ) Income taxes paid $ 402.4 $ 420.9 Interest paid $ 125.3 $ 147.1

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2015
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.

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2015
Changes in Accumulated Other Comprehensive Income (Loss) [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss)	Changes in Accumulated Other Comprehensive Income (Loss) The changes in accumulated other comprehensive income (loss) for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 Unrealized Gain (Loss) on Cash Flow Hedge Unrealized Gain (Loss) on Available-for-Sale Securities Defined Benefit Pension and Postemployment Plans Foreign Currency Translation Total January 1 $ — $ (1.2 ) $ (92.1 ) $ (524.9 ) $ (618.2 ) Other comprehensive income (loss) before reclassifications (9.2 ) 0.3 — (361.1 ) (370.0 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 6.6 — 6.6 Other comprehensive income (loss) (9.2 ) 0.3 6.6 (361.1 ) (363.4 ) September 30 $ (9.2 ) $ (0.9 ) $ (85.5 ) $ (886.0 ) $ (981.6 ) 2014 January 1 $ — $ (1.6 ) $ (68.8 ) $ (121.2 ) $ (191.6 ) Other comprehensive income (loss) before reclassifications — 0.3 — (232.9 ) (232.6 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 4.1 — 4.1 Other comprehensive income (loss) — 0.3 4.1 (232.9 ) (228.5 ) September 30 $ — $ (1.3 ) $ (64.7 ) $ (354.1 ) $ (420.1 ) Reclassifications from accumulated other comprehensive income (loss) for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 Amortization of defined benefit pension and postemployment plans: Prior service cost $ 5.5 $ 4.8 Actuarial (gains) losses 5.5 2.0 Net periodic benefit cost (see Note 8) 11.0 6.8 Income taxes 4.4 2.7 Periodic benefit cost, net of income taxes $ 6.6 $ 4.1

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2015
Fair Value [Abstract]
Fair Value	Fair Value Financial assets and liabilities measured at fair value on a recurring basis at September 30, 2015 and December 31, 2014 were (in millions): 2015 Level 1 Level 2 Level 3 Total Assets: Cash and cash equivalents $ 1,427.5 $ 1,427.5 Short-term investments 2.5 2.5 Available-for-sale securities 5.0 5.0 Interest rate and foreign currency derivative instruments $ 92.1 92.1 Liabilities: Interest rate and foreign currency derivative instruments $ 16.3 $ 16.3 Contingent purchase price obligations $ 327.7 327.7 2014 Assets: Cash and cash equivalents $ 2,388.1 $ 2,388.1 Short-term investments 2.2 2.2 Available-for-sale securities 4.9 4.9 Interest rate and foreign currency derivative instruments $ 43.1 43.1 Liabilities: Foreign currency derivative instruments $ 0.4 $ 0.4 Contingent purchase price obligations $ 300.7 300.7 The changes in Level 3 contingent purchase price obligations for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 January 1 $ 300.7 $ 220.2 Acquisitions 68.2 103.1 Revaluation and interest 26.3 0.1 Payments (55.6 ) (74.5 ) Foreign currency translation (11.9 ) (7.9 ) September 30 $ 327.7 $ 241.0 The carrying amount and fair value of our financial instruments at September 30, 2015 and December 31, 2014 were (in millions): 2015 2014 Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents $ 1,427.5 $ 1,427.5 $ 2,388.1 $ 2,388.1 Short-term investments 2.5 2.5 2.2 2.2 Available-for-sale securities 5.0 5.0 4.9 4.9 Interest rate and foreign currency derivative instruments 92.1 92.1 43.1 43.1 Cost method investments 21.6 21.6 21.8 21.8 Liabilities: Short-term borrowings $ 9.7 $ 9.7 $ 7.2 $ 7.2 Interest rate and foreign currency derivative instruments 16.3 16.3 0.4 0.4 Contingent purchase price obligations 327.7 327.7 300.7 300.7 Debt 4,605.6 4,692.3 4,563.0 4,754.9 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	9 Months Ended
	Sep. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events We have evaluated events subsequent to the balance sheet date and determined there have not been any events that have occurred that would require adjustment to or disclosure in the condensed consolidated financial statements.

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2015
Net Income per Common Share [Abstract]
Computations of Basic and Diluted Net Income per Common Share - Omnicom Group Inc.	The computation of basic and diluted net income per common share for the three and nine months ended September 30, 2015 and 2014 is (in millions, except per share amounts): Three Months Nine Months 2015 2014 2015 2014 Net Income Available for Common Shares: Net income - Omnicom Group Inc. $ 239.3 $ 243.8 $ 762.3 $ 774.5 Net income allocated to participating securities (2.5 ) (4.3 ) (9.0 ) (14.7 ) $ 236.8 $ 239.5 $ 753.3 $ 759.8 Weighted Average Shares: Basic 243.2 251.4 244.7 255.6 Dilutive stock options and restricted shares 1.2 1.0 1.1 1.7 Diluted 244.4 252.4 245.8 257.3 Anti-dilutive stock options and restricted shares 0.1 — 0.1 — Net Income per Common Share - Omnicom Group Inc.: Basic $ 0.97 $ 0.95 $ 3.08 $ 2.97 Diluted $ 0.97 $ 0.95 $ 3.06 $ 2.95

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and intangible assets at September 30, 2015 and December 31, 2014 were (in millions): 2015 2014 Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value Goodwill $ 9,219.2 $ (536.5 ) $ 8,682.7 $ 9,377.6 $ (555.4 ) $ 8,822.2 Intangible assets: Purchased and internally developed software $ 309.2 $ (238.1 ) $ 71.1 $ 298.7 $ (221.4 ) $ 77.3 Customer related and other 691.8 (424.0 ) 267.8 702.1 (390.0 ) 312.1 $ 1,001.0 $ (662.1 ) $ 338.9 $ 1,000.8 $ (611.4 ) $ 389.4
Changes in Goodwill	Changes in goodwill for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 January 1 $ 8,822.2 $ 8,916.0 Acquisitions 88.3 131.4 Dispositions (2.9 ) (1.6 ) Foreign currency translation (224.8 ) (170.6 ) September 30 $ 8,682.7 $ 8,875.2

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2015
Debt [Abstract]
Available and Credit Lines	Available and unused credit lines at September 30, 2015 and December 31, 2014 were (in millions): 2015 2014 Credit Agreement $ 2,500.0 $ 2,500.0 Uncommitted credit lines 1,267.7 937.8 Available and unused credit lines $ 3,767.7 $ 3,437.8
Long-Term Notes Payable	Long-term notes payable at September 30, 2015 and December 31, 2014 were (in millions): 2015 2014 5.9% Senior Notes due 2016 $ 1,000.0 $ 1,000.0 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 Other notes and loans 0.4 0.5 4,500.4 4,500.5 Unamortized premium (discount) on Senior Notes, net 10.4 11.1 Adjustment to carrying value for interest rate swaps 94.8 51.4 4,605.6 4,563.0 Current portion of debt (1,003.4 ) (0.4 ) Long-term notes payable $ 3,602.2 $ 4,562.6

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Revenue and Long-Lived Assets and Goodwill by Geographic Area	Revenue and long-lived assets and goodwill by geographic area as of and for the periods ended September 30, 2015 and 2014 were (in millions): Americas EMEA Asia Pacific 2015 Revenue - Three months ended $ 2,292.0 $ 1,027.8 $ 386.8 Revenue - Nine months ended 6,807.1 3,035.9 1,138.1 Long-lived assets and goodwill 6,107.8 2,750.4 515.8 2014 Revenue - Three months ended $ 2,224.4 $ 1,119.5 $ 405.7 Revenue - Nine months ended 6,600.9 3,355.1 1,166.7 Long-lived assets and goodwill 6,103.9 2,902.1 582.8

Pension and Other Postemploym26

Pension and Other Postemployment Benefits (Tables)	9 Months Ended
	Sep. 30, 2015
Defined Benefit Pension Plans [Member]
Components of Net Periodic Benefit Cost	Defined Benefit Pension Plans The components of net periodic benefit cost for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 Service cost $ 3.7 $ 5.5 Interest cost 5.2 5.5 Expected return on plan assets (2.3 ) (2.2 ) Amortization of prior service cost 3.1 3.2 Amortization of actuarial (gains) losses 4.3 1.4 $ 14.0 $ 13.4
Postemployment Arrangements [Member]
Components of Net Periodic Benefit Cost	Postemployment Arrangements The components of net periodic benefit cost for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 Service cost $ 3.6 $ 3.0 Interest cost 3.2 3.3 Amortization of prior service cost 2.4 1.6 Amortization of actuarial (gains) losses 1.2 0.6 $ 10.4 $ 8.5

Operating Expenses (Tables)

Operating Expenses (Tables)	9 Months Ended
	Sep. 30, 2015
Operating Expenses [Abstract]
Components of Operating Expenses	Operating expenses for the three and nine months ended September 30, 2015 and 2014 were (in millions): Three Months Nine Months 2015 2014 2015 2014 Salary and service costs $ 2,832.6 $ 2,813.2 $ 8,243.1 $ 8,230.7 Office and general expenses 445.7 502.8 1,393.4 1,527.3 $ 3,278.3 $ 3,316.0 $ 9,636.5 $ 9,758.0

Supplemental Cash Flow Data (Ta

Supplemental Cash Flow Data (Tables)	9 Months Ended
	Sep. 30, 2015
Supplemental Cash Flow Data [Abstract]
Change in Operating Capital	The change in operating capital for the nine months ended September 30, 2015 and 2014 was (in millions): 2015 2014 (Increase) decrease in accounts receivable $ (67.4 ) $ 333.4 (Increase) decrease in work in process and other current assets (367.0 ) (333.5 ) Increase (decrease) in accounts payable (132.2 ) (724.2 ) Increase (decrease) in customer advances and other current liabilities (68.1 ) (252.1 ) Change in other assets and liabilities, net (36.1 ) (115.5 ) $ (670.8 ) $ (1,091.9 ) Income taxes paid $ 402.4 $ 420.9 Interest paid $ 125.3 $ 147.1

Changes in Accumulated Other 29

Changes in Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2015
Changes in Accumulated Other Comprehensive Income (Loss) [Abstract]
Changes in accumulated other comprehensive income (loss)	The changes in accumulated other comprehensive income (loss) for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 Unrealized Gain (Loss) on Cash Flow Hedge Unrealized Gain (Loss) on Available-for-Sale Securities Defined Benefit Pension and Postemployment Plans Foreign Currency Translation Total January 1 $ — $ (1.2 ) $ (92.1 ) $ (524.9 ) $ (618.2 ) Other comprehensive income (loss) before reclassifications (9.2 ) 0.3 — (361.1 ) (370.0 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 6.6 — 6.6 Other comprehensive income (loss) (9.2 ) 0.3 6.6 (361.1 ) (363.4 ) September 30 $ (9.2 ) $ (0.9 ) $ (85.5 ) $ (886.0 ) $ (981.6 ) 2014 January 1 $ — $ (1.6 ) $ (68.8 ) $ (121.2 ) $ (191.6 ) Other comprehensive income (loss) before reclassifications — 0.3 — (232.9 ) (232.6 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 4.1 — 4.1 Other comprehensive income (loss) — 0.3 4.1 (232.9 ) (228.5 ) September 30 $ — $ (1.3 ) $ (64.7 ) $ (354.1 ) $ (420.1 )
Reclassifications from accumulated other comprehensive income (loss)	Reclassifications from accumulated other comprehensive income (loss) for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 Amortization of defined benefit pension and postemployment plans: Prior service cost $ 5.5 $ 4.8 Actuarial (gains) losses 5.5 2.0 Net periodic benefit cost (see Note 8) 11.0 6.8 Income taxes 4.4 2.7 Periodic benefit cost, net of income taxes $ 6.6 $ 4.1

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2015
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 September 30, 2015 and December 31, 2014 were (in millions): 2015 Level 1 Level 2 Level 3 Total Assets: Cash and cash equivalents $ 1,427.5 $ 1,427.5 Short-term investments 2.5 2.5 Available-for-sale securities 5.0 5.0 Interest rate and foreign currency derivative instruments $ 92.1 92.1 Liabilities: Interest rate and foreign currency derivative instruments $ 16.3 $ 16.3 Contingent purchase price obligations $ 327.7 327.7 2014 Assets: Cash and cash equivalents $ 2,388.1 $ 2,388.1 Short-term investments 2.2 2.2 Available-for-sale securities 4.9 4.9 Interest rate and foreign currency derivative instruments $ 43.1 43.1 Liabilities: Foreign currency derivative instruments $ 0.4 $ 0.4 Contingent purchase price obligations $ 300.7 300.7
Changes in Level 3 Contingent Purchase Price Obligations	The changes in Level 3 contingent purchase price obligations for the nine months ended September 30, 2015 and 2014 were (in millions): 2015 2014 January 1 $ 300.7 $ 220.2 Acquisitions 68.2 103.1 Revaluation and interest 26.3 0.1 Payments (55.6 ) (74.5 ) Foreign currency translation (11.9 ) (7.9 ) September 30 $ 327.7 $ 241.0
Carrying Amounts and Fair Value of Financial Instruments	The carrying amount and fair value of our financial instruments at September 30, 2015 and December 31, 2014 were (in millions): 2015 2014 Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents $ 1,427.5 $ 1,427.5 $ 2,388.1 $ 2,388.1 Short-term investments 2.5 2.5 2.2 2.2 Available-for-sale securities 5.0 5.0 4.9 4.9 Interest rate and foreign currency derivative instruments 92.1 92.1 43.1 43.1 Cost method investments 21.6 21.6 21.8 21.8 Liabilities: Short-term borrowings $ 9.7 $ 9.7 $ 7.2 $ 7.2 Interest rate and foreign currency derivative instruments 16.3 16.3 0.4 0.4 Contingent purchase price obligations 327.7 327.7 300.7 300.7 Debt 4,605.6 4,692.3 4,563.0 4,754.9

Net Income Per Common Share (De

Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Income Available for Common Shares:
Net income - Omnicom Group Inc.	$ 239.3	$ 243.8	$ 762.3	$ 774.5
Net income allocated to participating securities	(2.5)	(4.3)	(9)	(14.7)
Net income available for common shares	$ 236.8	$ 239.5	$ 753.3	$ 759.8
Weighted Average Shares:
Basic	243.2	251.4	244.7	255.6
Dilutive stock options and restricted shares	1.2	1	1.1	1.7
Diluted	244.4	252.4	245.8	257.3
Anti-dilutive stock options and restricted shares	0.1	0	0.1	0
Net Income per Common Share - Omnicom Group Inc.:
Basic	$ 0.97	$ 0.95	$ 3.08	$ 2.97
Diluted	$ 0.97	$ 0.95	$ 3.06	$ 2.95

Goodwill and Intangible Asset32

Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Dec. 31, 2014
Goodwill, Gross Carrying Value			$ 9,219.2	$ 9,377.6
Goodwill, Accumulated Amortization			(536.5)	(555.4)
Goodwill, Net Carrying Value	$ 8,822.2	$ 8,916	8,682.7	8,822.2
Intangible assets:, Gross Carrying Value			1,001	1,000.8
Intangible assets:, Accumulated Amortization			(662.1)	(611.4)
Intangible assets:, Net Carrying Value			338.9	389.4
Goodwill [Roll Forward]
Goodwill, January 1	8,822.2	8,916
Goodwill, Acquisitions	88.3	131.4
Goodwill, Dispositions	(2.9)	(1.6)
Goodwill, Foreign currency translation	(224.8)	(170.6)
Goodwill, September 30	8,682.7	8,875.2
Goodwill, impairment losses	0
Goodwill, accumulated impairment losses			0
Goodwill, acquisitions of noncontrolling interests	$ 4.5	$ 27.6
Purchased and internally developed software
Intangible assets:, Gross Carrying Value			309.2	298.7
Intangible assets:, Accumulated Amortization			(238.1)	(221.4)
Intangible assets:, Net Carrying Value			71.1	77.3
Customer related and other
Intangible assets:, Gross Carrying Value			691.8	702.1
Intangible assets:, Accumulated Amortization			(424)	(390)
Intangible assets:, Net Carrying Value			$ 267.8	$ 312.1

Debt (Details)

Debt (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Credit Lines [Abstract]
Available and unused credit lines	$ 3,767.7	$ 3,437.8
Short-Term Borrowings [Abstract]
Short-term borrowings	9.7	7.2
Long-Term Notes Payable [Abstract]
Long-term notes payable, carrying amount	4,500.4	4,500.5
Unamortized premium (discount) on Senior Notes, net	10.4	11.1
Adjustment to carrying value for interest rate swaps	94.8	51.4
Long-term notes payable, total	4,605.6	4,563
Long-term notes payable, current portion	(1,003.4)	(0.4)
Long-Term Notes Payable	3,602.2	4,562.6
Cash flow hedge liability, fair value	15.8
Cash flow hedge, accumulated gain, net of tax	(981.6)	(618.2)	$ (420.1)	$ (191.6)
Interest rate swaps, fair value	91.5	42.7
Credit Agreement
Credit Lines [Abstract]
Credit Agreement, maximum borrowing capacity	$ 2,500
Credit Agreement, expiration date	Jul. 31, 2020
Available and unused credit lines	$ 2,500	2,500
Credit Agreement, covenant terms	The Credit Agreement 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 Agreement, covenant compliance	At September 30, 2015 we were in compliance with these covenants as our Leverage Ratio was 2.1 times and our Interest Coverage Ratio was 12.6 times.
Credit Agreement | Commercial Paper [Member]
Credit Lines [Abstract]
Credit Agreement, maximum borrowing capacity	$ 2,000
Uncommitted credit lines
Credit Lines [Abstract]
Available and unused credit lines	1,267.7	937.8
5.9% Senior Notes due 2016
Long-Term Notes Payable [Abstract]
Long-term notes payable, carrying amount	$ 1,000	1,000
Interest rate	5.90%
Maturity date	Apr. 15, 2016
6.25% Senior Notes due 2019
Long-Term Notes Payable [Abstract]
Long-term notes payable, carrying amount	$ 500	500
Interest rate	6.25%
Maturity date	Jul. 15, 2019
4.45% Senior Notes due 2020
Long-Term Notes Payable [Abstract]
Long-term notes payable, carrying amount	$ 1,000	1,000
Interest rate	4.45%
Maturity date	Aug. 15, 2020
3.625% Senior Notes due 2022
Long-Term Notes Payable [Abstract]
Long-term notes payable, carrying amount	$ 1,250	1,250
Interest rate	3.625%
Maturity date	May 1, 2022
3.65% Senior Notes due 2024
Long-Term Notes Payable [Abstract]
Long-term notes payable, carrying amount	$ 750	750
Interest rate	3.65%
Maturity date	Nov. 1, 2024
Other notes and loans
Long-Term Notes Payable [Abstract]
Long-term notes payable, carrying amount	$ 0.4	0.5
Cash Flow Hedge [Member]
Long-Term Notes Payable [Abstract]
Cash flow hedge, notional amount	$ 1,000
Cash flow hedge, fixed interest rate	2.3209%
Cash flow hedge, inception date	Mar. 26, 2015
Cash flow hedge, maturity date	May 2, 2016
Interest Rate Swaps on 2022 Notes [Member]
Long-Term Notes Payable [Abstract]
Interest rate swaps, hedged amount	$ 1,250
Interest Rate Swaps on 2020 Notes [Member]
Long-Term Notes Payable [Abstract]
Interest rate swaps, hedged amount	1,000
Unrealized Gain (Loss) on Cash Flow Hedge
Long-Term Notes Payable [Abstract]
Cash flow hedge, accumulated gain, net of tax	$ (9.2)	$ 0	$ 0	$ 0
LIBOR [Member] | Interest Rate Swaps on 2022 Notes [Member]
Long-Term Notes Payable [Abstract]
Interest rate swaps, spread	1.05%
LIBOR [Member] | Interest Rate Swaps on 2020 Notes [Member]
Long-Term Notes Payable [Abstract]
Interest rate swaps, spread	2.16%

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue	$ 3,706.6	$ 3,749.6	$ 10,981.1	$ 11,122.7
Americas
Revenue	2,292	2,224.4	6,807.1	6,600.9
Long-lived assets and goodwill	6,107.8	6,103.9	6,107.8	6,103.9
UNITED STATES
Revenue	2,098.5	2,004.3	6,203	5,937.4
EMEA
Revenue	1,027.8	1,119.5	3,035.9	3,355.1
Long-lived assets and goodwill	2,750.4	2,902.1	2,750.4	2,902.1
Asia Pacific
Revenue	386.8	405.7	1,138.1	1,166.7
Long-lived assets and goodwill	$ 515.8	$ 582.8	$ 515.8	$ 582.8

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Income Taxes [Abstract]
Effective tax rate	32.80%	32.60%
Income tax benefit, merger expenses	$ 11
Effective tax rate, excluding merger expenses		33.50%
Unrecognized tax benefits	60.9
Unrecognized tax benefits that would impact effective tax rate	$ 50.8

Pension and Other Postemploym36

Pension and Other Postemployment Benefits (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Pension Plans [Member]
Components of Net Periodic Benefit Cost [Abstract]
Service cost	$ 3.7	$ 5.5
Interest cost	5.2	5.5
Expected return on plan assets	(2.3)	(2.2)
Amortization of prior service cost	3.1	3.2
Amortization of actuarial (gains) losses	4.3	1.4
Net periodic benefit cost	14	13.4
Defined benefit pension plans, contributions by employer	0.8	0.7
Postemployment Arrangements [Member]
Components of Net Periodic Benefit Cost [Abstract]
Service cost	3.6	3
Interest cost	3.2	3.3
Amortization of prior service cost	2.4	1.6
Amortization of actuarial (gains) losses	1.2	0.6
Net periodic benefit cost	$ 10.4	$ 8.5

Operating Expenses (Details)

Operating Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Operating Expenses [Abstract]
Salary and service costs	$ 2,832.6	$ 2,813.2	$ 8,243.1	$ 8,230.7
Office and general expenses	445.7	502.8	1,393.4	1,527.3
Operating expenses	$ 3,278.3	$ 3,316	$ 9,636.5	$ 9,758

Supplemental Cash Flow Data (De

Supplemental Cash Flow Data (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Change in Operating Capital [Abstract]
(Increase) decrease in accounts receivable	$ (67.4)	$ 333.4
(Increase) decrease in work in process and other current assets	(367)	(333.5)
Increase (decrease) in accounts payable	(132.2)	(724.2)
Increase (decrease) in customer advances and other current liabilities	(68.1)	(252.1)
Change in other assets and liabilities, net	(36.1)	(115.5)
Change in operating capital	(670.8)	(1,091.9)
Income taxes paid	402.4	420.9
Interest paid	$ 125.3	$ 147.1

Changes in Accumulated Other 39

Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	$ (618.2)	$ (191.6)
Other comprehensive income (loss) before reclassifications	(370)	(232.6)
Amounts reclassified from accumulated other comprehensive income (loss)	6.6	4.1
Other comprehensive income (loss)	(363.4)	(228.5)
September 30	(981.6)	(420.1)
Unrealized Gain (Loss) on Cash Flow Hedge
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	0	0
Other comprehensive income (loss) before reclassifications	(9.2)	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	(9.2)	0
September 30	(9.2)	0
Unrealized Gain (Loss) on Available-for-Sale Securities
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	(1.2)	(1.6)
Other comprehensive income (loss) before reclassifications	0.3	0.3
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	0.3	0.3
September 30	(0.9)	(1.3)
Defined Benefit Pension and Postemployment Plans
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	(92.1)	(68.8)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	6.6	4.1
Other comprehensive income (loss)	6.6	4.1
September 30	(85.5)	(64.7)
Defined Benefit Pension and Postemployment Plans | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Abstract]
Prior service cost	5.5	4.8
Actuarial (gains) losses	5.5	2
Net periodic benefit cost (see Note 8)	11	6.8
Income taxes	4.4	2.7
Periodic benefit cost, net of income taxes	6.6	4.1
Foreign Currency Translation
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	(524.9)	(121.2)
Other comprehensive income (loss) before reclassifications	(361.1)	(232.9)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	(361.1)	(232.9)
September 30	$ (886)	$ (354.1)

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Assets:
Cash and cash equivalents	$ 1,427.5		$ 2,388.1
Short-term investments	2.5		2.2
Available-for-sale securities	5		4.9
Interest rate and foreign currency derivative instruments	92.1		43.1
Cost method investments	21.6		21.8
Liabilities:
Short-term borrowings	9.7		7.2
Interest rate and foreign currency derivative instruments	16.3		0.4
Contingent purchase price obligations	327.7		300.7
Debt	4,692.3		4,754.9
Carrying Amount
Assets:
Cash and cash equivalents	1,427.5		2,388.1
Short-term investments	2.5		2.2
Available-for-sale securities	5		4.9
Interest rate and foreign currency derivative instruments	92.1		43.1
Cost method investments	21.6		21.8
Liabilities:
Short-term borrowings	9.7		7.2
Interest rate and foreign currency derivative instruments	16.3		0.4
Contingent purchase price obligations	327.7		300.7
Debt	4,605.6		4,563
Contingent purchase price obligations
Changes in Level 3 Contingent Purchase Price Obligations [Roll Forward]
January 1	300.7	$ 220.2
Acquisitions	68.2	103.1
Revaluation and interest	26.3	0.1
Payments	(55.6)	(74.5)
Foreign currency translation	(11.9)	(7.9)
September 30	327.7	$ 241
Fair Value, Measurements, Recurring [Member]
Assets:
Cash and cash equivalents	1,427.5		2,388.1
Short-term investments	2.5		2.2
Available-for-sale securities	5		4.9
Interest rate and foreign currency derivative instruments	92.1		43.1
Liabilities:
Interest rate and foreign currency derivative instruments	16.3
Foreign currency derivative instruments			0.4
Contingent purchase price obligations	327.7		300.7
Fair Value, Measurements, Recurring [Member] | Level 1
Assets:
Cash and cash equivalents	1,427.5		2,388.1
Short-term investments	2.5		2.2
Available-for-sale securities	5		4.9
Fair Value, Measurements, Recurring [Member] | Level 2
Assets:
Interest rate and foreign currency derivative instruments	92.1		43.1
Liabilities:
Interest rate and foreign currency derivative instruments	16.3
Foreign currency derivative instruments			0.4
Fair Value, Measurements, Recurring [Member] | Level 3
Liabilities:
Contingent purchase price obligations	$ 327.7		$ 300.7