INVIGORATE PROGRAM (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2013 positions	Jun. 30, 2013 positions layer
Restructuring Cost and Reserve [Line Items]
Management layers eliminated		3
Number of positions eliminated	450	450
Number of positions expected to be eliminated by the end of fiscal year		500
Total restructuring and integration charges	$ 17,400,000	$ 57,107,000
Cost of Services [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring and integration charges	5,600,000	22,300,000
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring and integration charges	11,800,000	34,800,000
Professional Fees Incurred in Connection with Further Restructuring and Integration [Member]
Restructuring Cost and Reserve [Line Items]
Adiditional costs	1,400,000	6,100,000
Invigorate Program [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring and integration charges	17,409,000	57,139,000
Management Layer Reduction Initiative [Member]
Restructuring Cost and Reserve [Line Items]
Incurred cost	300,000	18,500,000
Voluntary Retirement Program (Invigorate Program) [Member]
Restructuring Cost and Reserve [Line Items]
Incurred cost	$ 1,400,000	$ 4,400,000