Condensed Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue	$ 3,749.6	$ 3,490.5	$ 11,122.7	$ 10,526.4
Operating Expenses	3,316.0	3,111.1	9,758.0	9,252.2
Operating Income	433.6	379.4	1,364.7	1,274.2
Interest Expense	42.2	50.5	135.4	148.8
Interest Income	10.8	7.7	31.3	24.2
Income Before Income Taxes and Income From Equity Method Investments	402.2	336.6	1,260.6	1,149.6
Income Tax Expense	134.4	116.2	410.9	388.9
Income From Equity Method Investments	5.8	4.3	10.4	10.5
Net Income	273.6	224.7	860.1	771.2
Net Income Attributed To Noncontrolling Interests	(29.8)	(28.7)	(85.6)	(80.5)
Net Income - Omnicom Group Inc.	$ 243.8	$ 196.0	$ 774.5	$ 690.7
Net Income Per Share - Omnicom Group Inc.:
Basic	$ 0.95	$ 0.74	$ 2.97	$ 2.60
Diluted	$ 0.95	$ 0.74	$ 2.95	$ 2.58
Dividends Declared Per Common Share	$ 0.50	$ 0.40	$ 1.40	$ 1.20