Operating Expenses

3 Months Ended

Mar. 31, 2013

Operating Expenses [Abstract]

Operating Expenses

Operating Expenses

Operating expenses for the three months ended March 31, 2013 and 2012 were (in millions):

	2013		2012
Salary and service costs	$	2,533.6	$	2,434.4
Office and general expenses	493.6		510.4
Operating expenses	$	3,027.2	$	2,944.8