Operating Expenses (Tables)

3 Months Ended

Mar. 31, 2012

Operating Expenses [Abstract]

Components of Operating Expenses [Table Text Block]

The components of operating expenses for the three months ended March 31, 2012 and 2011 were (in millions)

	2012		2011
Salary and service costs	$	2,434.4	$	2,418.3
Office and general expenses	510.4		410.9
Operating expenses	$	2,944.8	$	2,829.2