Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Selected Quarterly Financial Data (Unaudited) [Abstract]

Selected Quarterly Financial Data (Unaudited)

The unaudited selected quarterly financial data for the years ended December 31, 2018 and 2017 were:

	Quarter
	First		Second		Third		Fourth
Revenue
2018	$	3,629.6	$	3,859.6	$	3,714.3	$	4,086.7
2017	3,587.4		3,790.1		3,719.5		4,176.6
Operating Expenses
2018	3,207.9		3,277.3		3,212.0		3,459.5
2017	3,171.7		3,218.6		3,249.3		3,550.1
Operating Profit
2018	421.7		582.3		502.3		627.2
2017	415.7		571.5		470.2		626.5
Net Income - Omnicom Group Inc.
2018	264.1		364.2		298.9		399.2
2017	241.8		328.6		263.6		254.4
Net Income Per Share Omnicom Group Inc. - Basic
2018	1.15		1.61		1.33		1.78
2017	1.03		1.41		1.14		1.10
Net Income Per Share Omnicom Group Inc. - Diluted
2018	1.14		1.60		1.32		1.77
2017	1.02		1.40		1.13		1.09