DERIVATIVES (INCOME STATEMENT CLASSIFICATION) (DETAILS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Cash Flow [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	$ 18,627	$ (6,004)
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Revenue	4,638	9,297
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - ineffective portion and amount excluded from effectiveness testing: Other income (expense), net	0
Designated as Hedging Instruments [Member] | Interest Rate [Member] | Cash Flow [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in other comprehensive income - effective portion, net of tax:	(879)	(1,358)
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - ineffective portion and amount excluded from effectiveness testing: Other income (expense), net	0
Amount and location of net gain or (loss) reclassified from accumulated OCI to income - effective portion: Interest expense	(741)
Not Designated as Hedging Instruments [Member] | Foreign Exchange [Member] | Fair Value [Member] | Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income	4,667	(1,178)
Not Designated as Hedging Instruments [Member] | Leases Derivative Contract [Member] | Embedded Derivative [Member] | Cost of Services [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of net gain or (loss) recognized in the Consolidated Statement of Comprehensive Income	$ 278	$ 139