Operating Expenses (Tables)

3 Months Ended

Mar. 31, 2014

Operating Expenses [Abstract]

Components of Operating Expenses

Operating expenses for the three months ended March 31, 2014 and 2013 were comprised of (in millions):

	2014		2013
Salary and service costs	$	2,622.8	$	2,541.0
Office and general expenses	489.7		486.2
Merger expenses	7.0		—
Operating expenses	$	3,119.5	$	3,027.2