Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 15,416.9	$ 15,134.4	$ 15,317.8
Salary and service costs	11,453.2	11,248.7	11,245.5
Occupancy and other costs	1,218.0	1,242.7	1,356.6
Cost of services	12,671.2	12,491.4	12,602.1
Selling, general and administrative expenses	443.9	431.8	477.2
Depreciation and amortization	292.9	291.1	294.4
Operating Expenses	13,408.0	13,214.3	13,373.7
Operating Profit	2,008.9	1,920.1	1,944.1
Interest Expense	209.7	181.1	177.2
Interest Income	42.6	39.6	43.1
Income Before Income Taxes and Income From Equity Method Investments	1,841.8	1,778.6	1,810.0
Income Tax Expense	600.5	583.6	593.1
Income From Equity Method Investments	5.4	8.4	16.2
Net Income	1,246.7	1,203.4	1,233.1
Net Income Attributed To Noncontrolling Interests	98.1	109.5	129.1
Net Income - Omnicom Group Inc.	$ 1,148.6	$ 1,093.9	$ 1,104.0
Net Income Per Share - Omnicom Group Inc.:
Basic	$ 4.80	$ 4.43	$ 4.27
Diluted	4.78	4.41	4.24
Dividends Declared Per Common Share	$ 2.15	$ 2.00	$ 1.90