EMPLOYEE COMPENSATION PLANS (NARRATIVE) (DETAILS) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
EMPLOYEE COMPENSATION PLANS [Abstract]
Company Match on US Defined Contribution Plans	$ 4,200,000	$ 3,000,000	$ 1,900,000
Shares Authorized under Current Equity Compensation Plan	4,000,000
Shares Available for Issuance under Current Equity Compensation Plan	1,700,000
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense	13,234,000	13,376,000	15,856,000
Total Tax Benefit Recognized for Equity-Based Compensation Expense	5,800,000	5,700,000	11,600,000
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value	$ 21.66	$ 15.91	$ 19.49
Intrinsic Value of RSUs Vested	12,300,000	15,500,000	13,900,000
Intrinsic Value of Non-Vested RSUs	47,300,000
Options Granted in 2011 to Key Employee			150,000
Weighted Average Grant Date Fair Value of Options Granted	$ 0	$ 0	$ 8.68
Intrinsic Value of Options Exercised	1,000,000	600,000	12,600,000
Fair Value of Shares Vested			100,000
Proceeds from exercise of stock options	862,000	1,374,000	14,762,000
Recognized Tax Benefit from Exercise of Stock Options	400,000	200,000	5,000,000
Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized Compensation Expense	300,000
Requisite Service Period	0 years 6 months 0 days
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized Compensation Expense	25,600,000
Requisite Service Period	1 year 6 months 0 days
Cost of Services [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense	2,200,000	1,900,000
Selling General And Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Equity-based compensation expense	$ 11,100,000	$ 11,500,000

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The total accumulated intrinsic value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units, as calculated by applying the disclosed pricing methodology.