COMMITMENTS, CONTINGENCIES AND LITIGATION - (Detail Textuals 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 Claim	Dec. 31, 2011	Dec. 31, 2010
Operating Leased Assets [Line Items]
Rent expense	$ 24.7	$ 23.2	$ 22.9
Pending claims for misstatement on integration of products and stability of services	2
Litigation expense	$ 0.5
Minimum
Operating Leased Assets [Line Items]
Initial lease terms	3 years
Maximum
Operating Leased Assets [Line Items]
Initial lease terms	25 years