Pending Business Combination (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Publicis Merger [Member] EUR (€)	Dec. 31, 2013 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