Pending Business Combination (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2014 Publicis Merger [Member] EUR (€)	Mar. 31, 2014 Omnicom Merger [Member] USD ($)
Date of Business Combination Agreement	Jul. 27, 2013
Number of Shares of Combined Entity to be Exchanged Per Share of Merging Entity		1.000000	0.813008
Business Combination Agreement, Transaction Dividend to be Declared		€ 1.00	$ 2.00
Business Combination Agreement, Maximum Dividends to be Excluded from Equalization			$ 0.80