Operating Expenses (Tables)

3 Months Ended

Mar. 31, 2015

Operating Expenses [Abstract]

Components of Operating Expenses

Operating expenses for the three months ended March 31, 2015 and 2014 were comprised of (in millions):

	2015		2014
Salary and service costs	$	2,620.8	$	2,622.8
Office and general expenses	470.7		496.7
	$	3,091.5	$	3,119.5

For the three months ended March 31, 2014, we incurred $7.0 million of expenses in connection with the proposed merger with Publicis Groupe S.A.(“Publicis”), which were primarily comprised of professional fees. On May 8, 2014, the proposed merger with Publicis was terminated.